mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced 2026-11-08 18:57:22 +00:00
55,327 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
9cebfe6504 |
fuse update for 7.3
-----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSQHSd0lITzzeNWNm3h3BK/laaZPAUCao1RzQAKCRDh3BK/laaZ PJ2EAP9dfslni4sFYqtXv/43Wk2iVwwdGRRSy5Tfoq8nCeNXpQEAygIv9BuJYpl6 DL861AOn/NfDBXpeU0vX4WQpTgtFIgc= =Av0t -----END PGP SIGNATURE----- Merge tag 'fuse-update-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse updates from Miklos Szeredi: - Improve performance of the io-uring transport by introducing buffer pools and zero-copy (Joanne) - Fix lots of bugs (Baokun Li) - Fix io-uring initialization issues (Joanne, Bernd) - More prep work for large folios (Joanne) - Don't limit buffered read to 128k (Jim Harris) - Fix zeroing of page end (dirtied with mmap) on file size extension (Jimmy Zuber) - Improve performance in certain cases with wake_up_sync() when queuing request (Xuewen Yan) - Misc fixes and cleanups (Xuewen Yan) * tag 'fuse-update-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: (35 commits) fuse: zero the partial EOF page when extending a file io_uring: Add missing include for ITER_SOURCE and ITER_DEST fuse: Fix the condition to enable over-io-uring fuse: invalidate the correct range after O_APPEND direct write selftests/fuse: test post-EOF page zeroing when a file is extended fuse: wake one waiter per freed slot when raising max_background fuse: use min_not_zero() in fuse_init_server_timeout() fuse: copy request headers via a stack buffer for io-uring fuse: give wakeup hints to the scheduler for synchronous requests fuse: check for NULL root inode in fuse_fill_super_submount fuse: reject a duplicate fd= mount option cuse: wait for pending RCU callbacks on module exit fuse: fix invalidate lock leak on open O_TRUNC DAX failure fuse: fix invalidate lock leak on setattr writeback failure fuse: wait for FR_FINISHED on abort_on_kill to prevent use-after-free fuse: make dentry_tree_work static docs: fuse: document io-uring buffer pool and zero-copy uapi fuse: add zero-copy over io-uring fuse: support registered buffer pools in io-uring fuse: add io-uring buffer pools ... |
||
|
Linus Torvalds
|
5b05bb3f6c |
platform-drivers-x86 for v7.3-1
Highlights:
- amd/halo: Add Halo RGB LED driver
- amd/hsmp:
- Properly serialize probe, remove, and data paths
- Add support for protocol v7 used by Family 1AH Model 80H
- Fix error checking corner cases (largely from AI review)
- Reject negative power cap
- amd/pmc:
- Improve behavior on platforms that do not support STB
- Add T14 Gen2 AMD (20XL) to s2idle quirk list
- amd/pmf:
- Add ioctl interface to retrieve device metrics
- Add support for new metrics tables used by Family 1AH Model 80H
- arm64: qcom-hamoa-ec: Reject short responses
- asus-nb-wmi: Support ProArt key on ASUS ProArt PX13
- asus-armoury:
- Gate PPT writes behind active fan curve
- Add power limits for more models
- dell-wmi-base: Fix handling of ultra performance key
- dell-wmi-sysman: Don't hex dump attribute security buffer
- hp-bioscfg:
- Various fixes
- Improve reduced ACPI packages support (necessary for HP EliteBook 840 G2)
- lg-laptop:
- Fix LED resource handling
- Add support for events used in newer models
- Fix keyboard backlight support on LG Gram 16T90SP
- hp-wmi:
- Generalize thermal params to board params
- Manage CPU and GPU PWM independently
- Add GPU MUX switch support
- Add Victus 15-fb0xxx support
- Add OMEN MAX 16-ak0xxx, OMEN 16-n0xxx, OMEN 16-wd0xxx, OMEN
16-wf0xxx, and OMEN board ID 8D88 support
- Add OMEN Transcend 16-u0xxx support
- huawei: Add support for Fn-lock ACPI interface found on newer Huawei
laptops such as MateBook 14 2024
- ISST:
- Improve input validation (many fixes)
- Disallow SST-CP (core-power) feature if perf profile add fails
- lenovo/yb9-kbdock: Add driver for Yoga Book 9 14IAH10
- lenovo/ymc:
- Extend hinge switch query to support Yoga 9 2-in-1 14IPH11
- Prevent loading on Yoga Book 9 14IAH10 to avoid duplicated input
nodes
- msi-ec: Add MSI Raider A18 HX A9WJG and MSI Katana GF76 11UEK support
- msi-wmi: Add MSI Claw M-Center keys support
- oxpec: Add support for OneXPlayer X2 Mini Pro
- redmi-wmi: Report kbd backlight cycle, OEM preset power mode, and FnLock
toggle events to userspace
- samsung-galaxybook: Add Samsung Galaxy Book6 Pro support
- thinkpad_acpi: Add USB-C Security support
- uniwill-laptop:
- Add keyboard backlight, AC auto boot, and USB powershare support
- Add MACHENIKE L16 Pro, AiStone X4SP4NAL, and Avell A60 MUV support
- Make lightbar max brightness configurable and add support for
LAPQC71A/B
- Major refactoring efforts:
- Stop setting acpi_device_name/class() and pnp.device_class to
faciliate their eventual removal
- Many rollback/remove path fixes (presumably mostly found by AI)
- Miscellaneous cleanups / refactoring / improvements
The following is an automated shortlog grouped by driver:
acer-wmi:
- reject missing gaming WMI results
amd/hsmp:
- ACPI HSMP refcounted sockets and coordinated release
- Add HSMP messages for Family 1Ah, Model 50h-5Fh
- Add IOCTL_GET_TELEMETRY_DATA for metric table reads
- Clear mdev.this_device on deregister
- Enable protocol version 7 metric tables on the ACPI driver
- Gate the data plane on a fully initialized socket
- Map the metric table with ioremap() and unmap it explicitly
- Pass struct device explicitly to ACPI mailbox parsers
- Reject negative power cap writes in hwmon
- Serialize ACPI HSMP probe and remove with an rwsem
- Serialize per-socket metric table reads with a mutex
- Serialize the data plane against socket teardown
- Source metric-table size from firmware
- Unify response_sz validation to an upper-bound check
- Validate ACPI UID before parsing socket index
- Validate _DSD mailbox sub-package element count
amd:
- Introduce Halo Box RGB LED driver
amd/pmc:
- Add T14 Gen2 AMD (20XL) to s2idle quirk list
- Do not fail probe when STB init fails
- Fix LPS0 and debugfs leaks when STB init fails
- Fix msg_port restoration in amd_stb_debugfs_open_v2()
- Only expose stb_read after telemetry buffer is mapped
- Propagate SMU errors and validate S2D address
- Restore msg_port on amd_stb_s2d_init() error paths
amd/pmf:
- Add 1AH_M80H device IDs and extended SMU mailbox registers
- Add 1AH_M80H metrics table and NPU metrics support
- Add missing newline in dev_err message
- Add util layer and userspace character device interface
- Implement util layer ioctl handler
- Introduce AMD PMF testing tool for driver metrics and features
- Move debug helper functions to UAPI header
- Move metrics code to dedicated file
- Refactor NPU metrics for platform extensibility
- store BIOS output values for user-space metrics via util IOCTL
- Store commonly used enums in the header file
- Use per-SoC smu_regs struct for SMU mailbox registers
- Use upper/lower_32_bits() in amd_pmf_set_dram_addr()
arm64: qcom-hamoa-ec:
- reject incomplete responses
asus-armoury:
- Add power limits for ROG Strix SCAR 16 (G635LX)
- Add power limits quirk for FA401KM
- Add power limits quirk for FA608WV
- add support for FX517ZR
- add support for HN7306EA and HN7306EAC
- fix Use-After-Free and memory leak in driver init
- gate PPT writes behind active fan curve
- use cleanup.h to manage tunables
asus-laptop:
- Stop setting acpi_device_name/class()
asus-nb-wmi:
- map ProArt key (0x8b) to KEY_PROG3
asus-wireless:
- Fail probe when there is no ACPI match
asus-wmi:
- fix resource leaks on probe failure
dell-ddv:
- Use no_free_ptr() to simplify error handling
dell-privacy:
- Fix race condition
dell-smbios:
- Pass device to callbacks
dell-smbios-wmi:
- Fix chardev resource management
- Replace global list with single item
dell-wmi-base:
- Fix handling of ultra performance key
- Fix resource leak on module load failure
dell-wmi-sysman:
- Don't hex dump attribute security buffer
- Fix instance ID bounds
Documentation/ABI:
- add testing entry for AMD PMF character device interface
eeepc-laptop:
- Stop setting acpi_device_name/class()
fujitsu-laptop:
- Stop setting acpi_device_name/class()
fujitsu-tablet:
- Stop setting acpi_device_name/class()
hp-bioscfg:
- accept reduced ACPI packages from older HP BIOS
- advance elem past consumed array elements
- bound ordered-list parsing by the package count
- fix heap OOB read in sk_store() and kek_store()
- fix heap OOB read on empty password write
- fix new_password_store() overwriting current_password
- fix off-by-one write in hp_get_string_from_buffer()
- fix ORD_LIST_ELEMENTS never being parsed
- fix password encoding bounds check
- pass validated element count to package parsers
- warn on element type mismatch instead of failing
hp-wmi:
- Add dual-channel PWM fan control
- Add GPU MUX switch support
- Add OMEN board 8A43 thermal profile support
- Add OMEN board 8BA9 thermal profile support
- Add OMEN board 8BAA thermal profile support
- Add OMEN board 8D88 thermal profile support
- Add OMEN Transcend 16 8BB3 support
- Add support for OMEN MAX 16-ak0xxx (8DD6)
- Add Victus 15-fb0xxx support
- Drive fan control from board data
- Introduce board-specific feature data
huawei-wmi:
- add ACPI fallback for Fn-lock on newer models
ideapad-laptop:
- Fix driver unregistration order
int1092:
- Fix info leak in parse_package()
- Fix potential memory leak in sar_probe()
intel/pmc:
- initialize empty PMT read result
ishtp_eclite:
- Fix ACPI device reference leak in probe error path
ISST:
- Add a NULL check for sst_inst[]
- Just allow 2 bits for SST feature enable
- Return error during profile addition
- Use PP level enable mask
- Validate level in perf mask ioctls
- Validate logical CPU id and clos id
- Validate max level for set feature
- Validate parameter for core power state
- Validate parameter for frequency and priority
- Validate socket ID in clos_assoc ioctl
lenovo:
- Add Yoga Book 9 keyboard dock detection driver
lenovo: lenovo-ymc:
- Suppress probe on Yoga Book 9 14IAH10
lenovo/ymc:
- Only match lower byte in WMI lid switch query response
lg-laptop:
- Add support for additional events
- Add support for native ACPI events
- Fix keyboard backlight support on LG Gram 16T90SP
- Fix LED resource handling
- Improve WMAB control method support
MAINTAINERS:
- update Intel PMC Core maintainer contact
mlxbf-bootctl:
- fix the build error with FIELD_PREP()
mlxbf-pmc:
- Check ACPI_COMPANION() against NULL
msi-ec:
- Add MSI Katana GF76 11UEK EC firmware
- Add MSI Raider A18 HX A9WJG EC firmware
msi-wmi:
- Add MSI Claw M-Center keys
- Reformat msi_wmi_notify()
oxpec:
- Add support for OneXPlayer X2 Mini Pro
panasonic-laptop:
- Fix sentinel write past pcc->sinf[]
- Stop setting acpi_device_name/class()
power: supply: surface_{battery,charger}:
- Consistently define ssam_device_ids using named initializers
redmi-wmi:
- report EC state change events
samsung-galaxybook:
- Add SAMB430 device ID
sony-laptop:
- Stop setting acpi_device_class()
sonypi:
- Stop setting acpi_device_name/class()
surface: acpi-notify:
- Check ACPI companion before use
surface: aggregator:
- Consistently define ssam_device_ids using named initializers
surface: surfacepro3_button:
- Stop setting acpi_device_name()
think-lmi:
- Fix certificate thumbprint sysfs output
- Fix current password length check
- Free system certificate signatures
thinkpad_acpi:
- Add USB-C Security (USCS) support
- Fix fan speed reporting on Edge E330
- Fix USB-C Security probe failure on unsupported platforms
- Stop setting acpi_device_class()
topstar-laptop:
- Stop setting acpi_device_name/class()
toshiba_acpi:
- Do not use uninitialized device_class
toshiba_bluetooth:
- Use more common error handling code in toshiba_bt_rfkill_probe()
toshiba_haps:
- Do not use uninitialized device_class
uniwill-laptop:
- Add 2 new feature defines for TUXEDO devices
- Add AC auto boot support
- Add Avell A60 MUV support
- Add keyboard backlight support
- Add lightbar support for LAPQC71A/B
- Add support for the AiStone X4SP4NAL
- Add support for the MACHENIKE L16 Pro
- Add support for USB powershare
- Handle screen-related events
- Remove single color keyboard detection
- Split uniwill_kbd_led_init()
x86/platform/olpc: xo15:
- Stop setting acpi_device_name/class()
xo15-ebook:
- Stop setting acpi_device_name/class()
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQSCSUwRdwTNL2MhaBlZrE9hU+XOMQUCaow0EgAKCRBZrE9hU+XO
MRvYAP412gjYokIoj6ncE2OD897gX2d5BwUVKkraQHoevxLm8wEAikY+iYbdOv3a
fqhPeCDZSRBn6yEBHewY7cdotNDn2go=
=d/Uf
-----END PGP SIGNATURE-----
Merge tag 'platform-drivers-x86-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen
"Highlights:
Major refactoring effort: stop setting acpi_device_name/class() and
pnp.device_class to facilitate their eventual removal
Many rollback/remove path fixes (presumably mostly found by AI)
Miscellaneous cleanups / refactoring / improvements
amd/halo:
- Add Halo RGB LED driver
amd/hsmp:
- Properly serialize probe, remove, and data paths
- Add support for protocol v7 used by Family 1AH Model 80H
- Fix error checking corner cases (largely from AI review)
- Reject negative power cap
amd/pmc:
- Improve behavior on platforms that do not support STB
- Add T14 Gen2 AMD (20XL) to s2idle quirk list
amd/pmf:
- Add ioctl interface to retrieve device metrics
- Add support for new metrics tables used by Family 1AH Model 80H
qcom-hamoa-ec (arm64):
- Reject short responses
asus-nb-wmi:
- Support ProArt key on ASUS ProArt PX13
asus-armoury:
- Gate PPT writes behind active fan curve
- Add power limits for more models
dell-wmi-base:
- Fix handling of ultra performance key
dell-wmi-sysman:
- Don't hex dump attribute security buffer
hp-bioscfg:
- Various fixes
- Improve reduced ACPI packages support (necessary for HP EliteBook 840 G2)
lg-laptop:
- Fix LED resource handling
- Add support for events used in newer models
- Fix keyboard backlight support on LG Gram 16T90SP
hp-wmi:
- Generalize thermal params to board params
- Manage CPU and GPU PWM independently
- Add GPU MUX switch support
- Add Victus 15-fb0xxx support
- Add OMEN MAX 16-ak0xxx, OMEN 16-n0xxx, OMEN 16-wd0xxx, OMEN
16-wf0xxx, and OMEN board ID 8D88 support
- Add OMEN Transcend 16-u0xxx support
huawei:
- Add support for Fn-lock ACPI interface found on newer Huawei
laptops such as MateBook 14 2024
ISST:
- Improve input validation (many fixes)
- Disallow SST-CP (core-power) feature if perf profile add fails
lenovo/yb9-kbdock:
- Add driver for Yoga Book 9 14IAH10
lenovo/ymc:
- Extend hinge switch query to support Yoga 9 2-in-1 14IPH11
- Prevent loading on Yoga Book 9 14IAH10 to avoid duplicated input
nodes
msi-ec:
- Add MSI Raider A18 HX A9WJG and MSI Katana GF76 11UEK support
msi-wmi:
- Add MSI Claw M-Center keys support
oxpec:
- Add support for OneXPlayer X2 Mini Pro
redmi-wmi:
- Report kbd backlight cycle, OEM preset power mode, and FnLock
toggle events to userspace
samsung-galaxybook:
- Add Samsung Galaxy Book6 Pro support
thinkpad_acpi:
- Add USB-C Security support
uniwill-laptop:
- Add keyboard backlight, AC auto boot, and USB powershare support
- Add MACHENIKE L16 Pro, AiStone X4SP4NAL, and Avell A60 MUV support
- Make lightbar max brightness configurable and add support for
LAPQC71A/B"
* tag 'platform-drivers-x86-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (152 commits)
platform/x86: think-lmi: Fix current password length check
platform/x86: redmi-wmi: report EC state change events
MAINTAINERS: update Intel PMC Core maintainer contact
platform/x86: oxpec: Add support for OneXPlayer X2 Mini Pro
platform/x86: thinkpad_acpi: Fix fan speed reporting on Edge E330
platform/x86: msi-ec: Add MSI Katana GF76 11UEK EC firmware
platform/x86: think-lmi: Fix certificate thumbprint sysfs output
mlxbf-bootctl: fix the build error with FIELD_PREP()
platform/x86: think-lmi: Free system certificate signatures
platform/x86: ISST: Add a NULL check for sst_inst[]
platform/x86: ISST: Return error during profile addition
platform/x86: ISST: Just allow 2 bits for SST feature enable
platform/x86: ISST: Use PP level enable mask
platform/x86: ISST: Validate parameter for frequency and priority
platform/x86: ISST: Validate parameter for core power state
platform/x86: ISST: Validate max level for set feature
platform/x86: ISST: Validate logical CPU id and clos id
platform/x86: ISST: Validate level in perf mask ioctls
platform/x86: ISST: Validate socket ID in clos_assoc ioctl
platform/x86/amd/hsmp: Reject negative power cap writes in hwmon
...
|
||
Jimmy Zuber
|
60dbcce156 |
selftests/fuse: test post-EOF page zeroing when a file is extended
Add a regression test for the bug where extending a file left the tail of
the old partial EOF page exposing stale mmap-dirtied data instead of zeros.
The test is a self-contained raw /dev/fuse server (no libfuse dependency)
that runs without writeback_cache and returns FOPEN_KEEP_CACHE, the
configuration in which the bug is visible. Its backing data is always zero
in the hole, so any non-zero byte a read sees is stale page-cache data.
All offsets are relative to the runtime page size. Four cases:
- write_extend: pollute the post-EOF tail, extend past it by writing into
a later page, and verify the tail reads back as zero;
- ftruncate_extend: same, but extend via ftruncate();
- fallocate_extend: same, but extend via fallocate() at the old EOF;
- extend_into_eof_page_preserves_data: an extending write landing inside
the old EOF page must not be clobbered by the zeroing.
Each case fails without the fix and passes with it.
Signed-off-by: Jimmy Zuber <jamz@amazon.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
|
||
|
Linus Torvalds
|
388b607d10 |
EFI updates for v7.3
- Set a timeout for EFI runtime service completions, and declare the firmware wedged if it is exceeded. Note that this requires special handling in case the firmware does return after all. - Rate limit the efivarfs statfs() handler as the QueryVariableInfo() runtime service can be costly - Sanity check the size of struct properties_header on Mac/x86 - Tweak the prototype of efi_guid_to_str() -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQQQm/3uucuRGn1Dmh0wbglWLn0tXAUCaoqdVQAKCRAwbglWLn0t XAb1AP9DIuHIAYlD4j8FKXcJtq1O/MzOadE3c4fNIdTPlTeUaAD8CAP0gHG3iRvc G265QOG2tjmmnFbCe+R8JVSdXBwCEAU= =GNJQ -----END PGP SIGNATURE----- Merge tag 'efi-next-for-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi Pull EFI updates from Ard Biesheuvel: - Set a timeout for EFI runtime service completions, and declare the firmware wedged if it is exceeded. Note that this requires special handling in case the firmware does return after all - Rate limit the efivarfs statfs() handler as the QueryVariableInfo() runtime service can be costly - Sanity check the size of struct properties_header on Mac/x86 - Tweak the prototype of efi_guid_to_str() * tag 'efi-next-for-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi: efivarfs: Rate limit statfs() handler efi: apple-properties: validate setup data header length efi: make efi_guid_to_str() take a const GUID pointer efi/runtime-wrappers: retire the worker if a wedged call ever returns efi/runtime-wrappers: honour EFI_RUNTIME_SERVICES in the non-blocking paths efi/runtime-wrappers: bound the wait for EFI runtime service calls efi/runtime-wrappers: check EFI_RUNTIME_SERVICES before using efi_rts_work efi/runtime-wrappers: handle queue_work() failure with goto exit efi/runtime-wrappers: factor out efi_rts_park_worker() efi: fix stale reference to efi_recover_from_page_fault() |
||
|
Linus Torvalds
|
91959a31a3 |
kho: make boot time huge page allocation work nicely with KHO
Today allocation of gigantic pages in HugeTLB cannot work reliably with KHO:
* HugeTLB allocates gigantic pages using memblock and autoscaling of KHO
scratch accounts for these allocations. When gigantic pages occupy half
of the memory of more, KHO fails to allocate its scratch memory.
* After kexec handover, memblock allocations exclusively use KHO scratch
that is not supposed to contain preserved memory. This essentially blocks
preservation of HugeTLB with gigantic pages.
Extend early memory pools available for KHO kernel with areas that are
guaranteed not to contain preserved memory.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEeOVYVaWZL5900a/pOQOGJssO/ZEFAmqK9NwACgkQOQOGJssO
/ZGN3wgAqX/mXawYnhwDW2J931VsT54RuEctSNTCZ4Va8CWfeVjSV2bD2BlM+ibi
VtsvEAIdKb8tyx3t+3JLR3jrANE5XcxeDiS7sJG7QWaek6G++GdAmrm7q98rU7Pc
rqX8kMf65AZpHuV5wzKgF1fuYYur5Y4sKK00GVq+hPyWshmeYhaa+nGtJNe67D1a
CFw38r5WAPs/DwyvWg/3yfupbgTG6OShHPnKxqR7aaOJE4YnD3snsBM7hot/ZI7e
kz4TqixkxKn1RXq0XDcj8w11LxhxxsI67x02Fnnc1ClgMynCgDOvRXW6B93qRIRM
ZUK8fbzIxFDQHnfzWRXcIIsN7r54Ow==
=JHVN
-----END PGP SIGNATURE-----
Merge tag 'liveupdate-v7.3-rc1-20260823' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux
Pull more liveupdate updates from Mike Rapoport:
"Make boot time huge page allocation work nicely with kexec handover.
Today allocation of gigantic pages in HugeTLB cannot work reliably
with kexec handover (KHO):
- HugeTLB allocates gigantic pages using memblock and autoscaling of
KHO scratch accounts for these allocations. When gigantic pages
occupy half of the memory of more, KHO fails to allocate its
scratch memory.
- After kexec handover, memblock allocations exclusively use KHO
scratch that is not supposed to contain preserved memory. This
essentially blocks preservation of HugeTLB with gigantic pages.
Extend early memory pools available for KHO kernel with areas that are
guaranteed not to contain preserved memory"
* tag 'liveupdate-v7.3-rc1-20260823' of git://git.kernel.org/pub/scm/linux/kernel/git/liveupdate/linux: (21 commits)
kho: exclude hugetlb memory from scratch size calculation
memblock: add memblock_reserved_hugetlb_size()
memblock: make HugeTLB bootmem allocation work with KHO
memblock: always include KHO headers
kho: extend scratch
mm/mm_init: don't rely on memblock to get KHO scratch migratetype
kho: initialize preserved memory map radix tree earlier
kho: initialize kho_scratch pointer earlier in boot
kho: expose kho_scratch_overlap() to kexec_handover.h
kho: add kho_radix_init_tree()
kho: allow destroying KHO radix tree
kho: allow early-boot usage of the KHO radix tree
kho: add data argument to radix walk callback
kho: add callback for table pages
kho: add a struct for radix callbacks
kho: move all memory retrieval logic to kho_mem_retrieve()
kho: store incoming radix tree in kho_in
kho: disallow wide keys in radix tree
kho: make radix max key width more obvious
kho: generalize radix tree APIs
...
|
||
|
Linus Torvalds
|
e5f9260615 |
mm.git review status for master..mm-nonmm-stable
Total patches: 95 Reviews/patch: 0.63 Reviewed rate: 56% Summary of patch series in this merge: - "ocfs2/dlm: bound peer-controlled lengths in the o2dlm" (Bryam Vargas): Validate and bound all input lengths and count fields in the o2dlm migration and recovery receive handlers to prevent memory corruption and kernel panics from malformed cluster messages - "ocfs2: validate xattr entry bounds" (Cen Zhang): Validate OCFS2 extended attribute entry name and value bounds during metadata reads to prevent out-of-range memory accesses during retrieval or listing operations. - "taskstats: fix cgroupstats invalid fd handling and add selftests" (Yiyang Chen): Return -EBADF when cgroupstats receives an invalid file descriptor to prevent caller hangs and misleading success ACKs. Add a kselftest to validate valid cgroup v1 queries and verify proper error handling across different Netlink flag combinations. - "misc lib/raid/ improvements v2" (Christoph Hellwig): Improve benchmark-based algorithm selection for the XOR and RAID6 libraries, add KUnit benchmark tests, and cleanup minor implementation details. - "ocfs2: cluster: o2hb_region_pin() fixes" (Joseph Qi): Fix sleeping-in-atomic, lock order inversion and error-path cleanup bugs in o2hb_region_pin() by releasing o2hb_live_lock across sleeping configfs_depend_item() calls and using unlocked variants from callback context. Ensure failed pin attempts properly decrement user counts and unpin partially initialized heartbeat regions to prevent memory leaks and unprotected states. - "lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen()" (Vincent Mailhol) Fix an off-by-one which could cause an out-of-bounds read. - "ocfs2: harden heartbeat teardown races" (Cen Zhang): Fix two OCFS2 heartbeat/o2net teardown races found by KASAN. - "taskstats: tidy up the cpumask command path" *Bradley Morgan) make two small cleanups in kernel/taskstats.c. - "ocfs2: validate active orphan slots during inode read" (ZhengYuan Huang): Validate active ordinary and append-DIO orphan slots read from OCFS2 dinodes at the metadata boundary to prevent corrupted slot indices from causing out-of-bounds array accesses. - "ocfs2: bound-check both readdir re-validation scans" (Zhan Xusheng) Enforce strict boundary checks on directory entry record lengths and offset calculations during OCFS2 directory re-scans to prevent out-of-bounds memory reads and directory position corruption. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaoo38wAKCRDdBJ7gKXxA jnKuAP9tIUJoYIzxG7zr00qJj95gczgE0+GikN1wXfO9Cvh8QAEAqr5InWrANTBB l4qW3/o4hM9TlBdr84oT3RNnvBicuwA= =BY1d -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: - "ocfs2/dlm: bound peer-controlled lengths in the o2dlm" (Bryam Vargas) Validate and bound all input lengths and count fields in the o2dlm migration and recovery receive handlers to prevent memory corruption and kernel panics from malformed cluster messages - "ocfs2: validate xattr entry bounds" (Cen Zhang) Validate OCFS2 extended attribute entry name and value bounds during metadata reads to prevent out-of-range memory accesses during retrieval or listing operations. - "taskstats: fix cgroupstats invalid fd handling and add selftests" (Yiyang Chen) Return -EBADF when cgroupstats receives an invalid file descriptor to prevent caller hangs and misleading success ACKs. Add a kselftest to validate valid cgroup v1 queries and verify proper error handling across different Netlink flag combinations. - "misc lib/raid/ improvements v2" (Christoph Hellwig) Improve benchmark-based algorithm selection for the XOR and RAID6 libraries, add KUnit benchmark tests, and cleanup minor implementation details. - "ocfs2: cluster: o2hb_region_pin() fixes" (Joseph Qi) Fix sleeping-in-atomic, lock order inversion and error-path cleanup bugs in o2hb_region_pin() by releasing o2hb_live_lock across sleeping configfs_depend_item() calls and using unlocked variants from callback context. Ensure failed pin attempts properly decrement user counts and unpin partially initialized heartbeat regions to prevent memory leaks and unprotected states. - "lib/ucs2_string.c: fix out-of-bounds read in ucs2_strnlen()" (Vincent Mailhol) Fix an off-by-one which could cause an out-of-bounds read. - "ocfs2: harden heartbeat teardown races" (Cen Zhang) Fix two OCFS2 heartbeat/o2net teardown races found by KASAN. - "taskstats: tidy up the cpumask command path" *Bradley Morgan) make two small cleanups in kernel/taskstats.c. - "ocfs2: validate active orphan slots during inode read" (ZhengYuan Huang) Validate active ordinary and append-DIO orphan slots read from OCFS2 dinodes at the metadata boundary to prevent corrupted slot indices from causing out-of-bounds array accesses. - "ocfs2: bound-check both readdir re-validation scans" (Zhan Xusheng) Enforce strict boundary checks on directory entry record lengths and offset calculations during OCFS2 directory re-scans to prevent out-of-bounds memory reads and directory position corruption. * tag 'mm-nonmm-stable-2026-08-22-16-57' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (95 commits) mailmap: fix bouncing address for Taniya Das ocfs2: bound-check dir entries in the inline-data re-validation scan ocfs2: bound-check dir entries in the readdir re-validation scan squashfs: avoid thundering-herd cache wakeups prctl: fix PR_SET_MM_AUXV losing the forced AT_NULL terminator mailmap: update email address for Linfeng Sun lib/interval_tree: fix allocation warning messages checkpatch: add NOKPROBE_SYMBOL to the whitelist of lines that can occur immediately after functions Squashfs: check block offset is not negative signal: factor out the kernel reserved si_code check ocfs2: fix readdir position truncation on 32-bit kernels ocfs2: fix cached cluster count after suballocator reclaim ocfs2: fix circular locking dependency in ocfs2_init_acl() ocfs2: validate DIO orphan slot during inode read ocfs2: validate orphan slot during inode read selftests/prctl: fix non-anonymous VMA mapping in set-anon-vma-name test MAINTAINERS: add IRC and patchwork for LTP include/linux/list.h: mark list_add and __list_add as __always_inline tools/mm: prevent page_owner_sort from truncating input hung_task: update DETECT_HUNG_TASK_BLOCKER Kconfig help ... |
||
|
Linus Torvalds
|
473f6c8f43 |
perf tools updates for v7.3
perf c2c:
- Add 'function view' in perf c2c report TUI (switched by pressing 'TAB'
in the cacheline view) to organize samples around functions rather than
cachelines in 3-level hierarchy:
Level 1: Read-side function (sorted by estimated Cycles %)
Level 2: Contending writer functions (sorted by Store count)
Level 3: Shared cacheline addresses
Users can navigate the entries and fold/unfold using 'e' key. An example
output would look like below:
Shared Data Functions Table (19 entries, sorted on Cycles %)
Cycles Store
% count Function / Contending function / Cacheline
----------------------------------------------------------------------
+ 35.67% 876 + [k] cpupri_set
+ 24.31% 424 + [k] pull_rt_task
- 16.53% 555 - [k] dequeue_pushable_task
145 - [k] pull_rt_task
145 0xff2d0082809da080
139 - [k] enqueue_pushable_task
70 0xff2d00a2071f9640
69 0xff2d0082809da000
python module support:
- Extend "perf" python module so that it can be fully functional. The goal
is to run scripts directly, not by 'perf script' command. This would give
better performance as well as more control to build standalone programs
with UI.
- Add LiveSession helper (perf_live.py) to enable live event collection
directly from Python using perf.evlist and perf.parse_events.
perf stat:
- Add --hide-zero-events option to suppress zero-count events.
- Reject conflicting --field-separator and --json-output options.
- Fix duplicate event output with --for-each-cgroup.
perf sched latency:
- Add -H/--histogram and --hist-mode (log|linear) options to show scheduler
wait latency histograms.
- Add --time option to filter analysis by time span in 'perf sched latency'.
ARM CoreSight:
- Synthesize callchains for instruction samples from CoreSight trace
using thread stack ('--itrace=g...').
- Support call indentation ('perf script -F +callindent') to display call
depth hierarchy on branch samples.
- Decode ETE (Embedded Trace Extension) exception packets.
Build system:
- Add 'make install-build-deps' target to install required packages.
- Parallelize JSON and metric pre-computation in jevents.py for faster builds.
Vendor event/metric updates:
- Add Intel Nova Lake events and update tables for existing models.
- Update AMD Zen 5 and Zen 6 core events.
- Update Arm64 Tegra410 metrics and PowerPC hcalls.
Internal changes and fixes:
- Harden trace-event and synthetic event parsing against corrupted data.
- Fix unwinding of multi-threaded processes in libdw unwinder.
- Fix memory leaks in various commands and python bindings.
- Speed up 'perf test' shell tests.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQSo2x5BnqMqsoHtzsmMstVUGiXMgwUCaojCVQAKCRCMstVUGiXM
gxZLAP9u7Bqhfcrc1KKS9RcxBaiYwsPOIgbtdrDDCSiLtdz0EwEAk1UCSXodUsaR
45nbx01h+h7cUWk2HM735f4RXRfO/AE=
=GLJH
-----END PGP SIGNATURE-----
Merge tag 'perf-tools-for-v7.3-2026-08-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Namhyung Kim:
"perf c2c:
- Add 'function view' in perf c2c report TUI (switched by pressing
'TAB' in the cacheline view) to organize samples around functions
rather than cachelines in 3-level hierarchy:
Level 1: Read-side function (sorted by estimated Cycles %)
Level 2: Contending writer functions (sorted by Store count)
Level 3: Shared cacheline addresses
Users can navigate the entries and fold/unfold using 'e' key. An
example output would look like below:
Shared Data Functions Table (19 entries, sorted on Cycles %)
Cycles Store
% count Function / Contending function / Cacheline
----------------------------------------------------------------------
+ 35.67% 876 + [k] cpupri_set
+ 24.31% 424 + [k] pull_rt_task
- 16.53% 555 - [k] dequeue_pushable_task
145 - [k] pull_rt_task
145 0xff2d0082809da080
139 - [k] enqueue_pushable_task
70 0xff2d00a2071f9640
69 0xff2d0082809da000
python module support:
- Extend "perf" python module so that it can be fully functional. The
goal is to run scripts directly, not by 'perf script' command. This
would give better performance as well as more control to build
standalone programs with UI.
- Add LiveSession helper (perf_live.py) to enable live event
collection directly from Python using perf.evlist and
perf.parse_events.
perf stat:
- Add --hide-zero-events option to suppress zero-count events
- Reject conflicting --field-separator and --json-output options
- Fix duplicate event output with --for-each-cgroup
perf sched latency:
- Add -H/--histogram and --hist-mode (log|linear) options to show
scheduler wait latency histograms
- Add --time option to filter analysis by time span in 'perf sched
latency'
ARM CoreSight:
- Synthesize callchains for instruction samples from CoreSight trace
using thread stack ('--itrace=g...')
- Support call indentation ('perf script -F +callindent') to display
call depth hierarchy on branch samples
- Decode ETE (Embedded Trace Extension) exception packets
Build system:
- Add 'make install-build-deps' target to install required packages
- Parallelize JSON and metric pre-computation in jevents.py for
faster builds
Vendor event/metric updates:
- Add Intel Nova Lake events and update tables for existing models
- Update AMD Zen 5 and Zen 6 core events
- Update Arm64 Tegra410 metrics and PowerPC hcalls
Internal changes and fixes:
- Harden trace-event and synthetic event parsing against corrupted
data
- Fix unwinding of multi-threaded processes in libdw unwinder
- Fix memory leaks in various commands and python bindings
- Speed up 'perf test' shell tests"
* tag 'perf-tools-for-v7.3-2026-08-21' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (232 commits)
perf vendor events arm64: Fix Tegra410 Olympus event 0x0197
perf vendor events arm64: fix swapped MetricGroup for Tegra410 L1 prefetcher metrics
perf evlist: Warn when 'sleep' workload is used without system-wide (-a) option
perf c2c: document function view in perf-c2c man page
perf c2c: add function view browser UI and cacheline detail
perf c2c: build and finalize the function view hierarchy
perf c2c: add function view hierarchy entry creation
perf c2c: add function view stats merge and memory management
perf c2c: add HPP list parsing for function view columns
perf c2c: add column rendering for function view
perf c2c: add function view model skeleton
perf c2c: extract shared data structures into util/c2c.h
perf test sample-parsing: Validate PERF_FORMAT_GROUP values without LOST
perf dso: Replace assert with runtime check in dso__read_symbol()
perf dso: Guard against cache underflow on short reads in dso_cache__memcpy()
perf dso: Use stored fd error instead of stale errno in file_read() and file_size()
perf dso: Guard close() against invalid fd in dso__decompress_kmodule_path()
perf dso: Guard against errno==0 when dso__get_filename() returns NULL
perf build: install-build-deps: add RHEL family devel package mapping
perf build: Remove leftover feature tests for removed cxx and clang support
...
|
||
|
Linus Torvalds
|
7199989f3f |
Landlock update for v7.3-rc1
-----BEGIN PGP SIGNATURE----- iIYEABYKAC4WIQSVyBthFV4iTW/VU1/l49DojIL20gUCaoa8/RAcbWljQGRpZ2lr b2QubmV0AAoJEOXj0OiMgvbSSjMBAIq+/dIjMVUddtyqRlWKMfBQqokU4Dl5JeHB Y4Jh61idAQCihXimNu+TOuX1zc80eBR+IzDYaAU8ZGcK079hmGO5Bw== =TKoa -----END PGP SIGNATURE----- Merge tag 'landlock-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux Pull Landlock update from Mickaël Salaün: "This improves observability with Landlock tracepoints support, which required some refactoring for dedicated domain types and common helpers shared with audit code. A LANDLOCK_RESTRICT_SELF_NO_NEW_PRIVS flag is also added to improve process-wide domain enforcement consistency. Whiteout files are now correctly handled and tested, and a few other fixes" * tag 'landlock-7.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mic/linux: (34 commits) landlock: Document tracepoints selftests/landlock: Add landlock_enforce_domain trace tests selftests/landlock: Add scope and ptrace tracepoint tests selftests/landlock: Add network tracepoint tests selftests/landlock: Add filesystem tracepoint tests selftests/landlock: Add trace event test infrastructure and tests landlock: Add tracepoints for ptrace and scope denials landlock: Add landlock_deny_access_fs and landlock_deny_access_net landlock: Add tracepoints for rule checking landlock: Add landlock_enforce_domain tracepoint landlock: Add create_domain and free_domain tracepoints landlock: Add landlock_add_rule_fs and landlock_add_rule_net tracepoints landlock: Add create_ruleset and free_ruleset tracepoints landlock: Consolidate access-right and scope names in a shared header landlock: Decouple the per-denial logging decision from CONFIG_AUDIT landlock: Split denial logging from audit into common framework landlock: Split struct landlock_domain from struct landlock_ruleset landlock: Move domain query functions to domain.c landlock: Prepare ruleset and domain type split samples/landlock: Add LANDLOCK_RESTRICT_SELF_NO_NEW_PRIVS to sampler ... |
||
|
Linus Torvalds
|
2be02a7c99 |
power supply and reset changes for the 7.3 series
* power-supply core - Add PbAc, NiZn, RAM, and ZnAr battery chemistry types - Create LED triggers based on properties instead of device type - Provide power_supply_get_system_batteries() for usage with USB-C - Add registration init callback for race-free device setup * power-supply drivers - new TI BQ25630 charger driver - new SG Micro sgm41542 charger driver - bq257xx: Add support for BQ25792 - max8903: add DC and USB input current-limit controls - max17042_battery: Initialize MAX17055 from battery info - sbs-battery: map newly introduced battery chemistries - drop extra error messages for IRQ request failures - lot's of driver removal race condition fixes - misc. small cleanups and fixes * reset drivers - add MCF5441x RCM power-on reason driver - misc. small cleanups and fixes -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE72YNB0Y/i3JqeVQT2O7X88g7+poFAmqHhI8ACgkQ2O7X88g7 +prz8A//RwS840YNf/HU54EoG9daMtipcZ6RJrSoY0UiS4oYxERuOoP3azaj/B+l 6x7q8sp84E6Ejrrt1Hr6guKvRclVbgFJwagbqbzZ1l/EQvxgHPo2grHlSHSpqoPM NafNyFyrItuC9T02XkI1AnDcrXBIXZ4EXxIH2pe/da027lUGkAZO56oxmX5WDBRc OsUvCBBMOe2wlLnQErT7AfEFOic4H4Uz6j+CDwitHGqPcctpLR9JuBiB5QDFKaeY Nf3GDxRG1pahCCgs9ltOAHKx3UmS71xwfEWoig4h4r88OpV59Mm3fMhteTSt2nAl 5c5tkSwBpnlTdMJdJkrlR4bmGMGjAdd0+MkqBivWGev1NJMNo/QGoh0a7pVUFGSt lPgy0vA51+ZBGmcEY6lh4uOlJ0Pn9Sd04Ao/En+0fd0r+jlq3x1JebwqTeFt9pNd 5zXxl2UKpd6xaF6EZoV59AI/DCwNKxHpFfh1IMvBsfFAqe/ULrlr4v+AD+TCUMdr PLU/jdg9j8iIXo7s5U9Xymba5/cxFmy95u+fsVtjjFhHdSRMcKjwRS3mg0L5W+GN umy/2ewraTNsHCLZ7bS0/OL/rSv6nnL5DH/Jk02pkws2lpmVL5x+xeCK4UTJy6rA rMHa+Ex5/i+fW5n5XBgbDmRu/ihojcsVX5Xz/7/LqyuHvTlLWj4= =TxN7 -----END PGP SIGNATURE----- Merge tag 'for-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply Pull power supply and reset updates from Sebastian Reichel: "Power-supply core: - Add PbAc, NiZn, RAM, and ZnAr battery chemistry types - Create LED triggers based on properties instead of device type - Provide power_supply_get_system_batteries() for usage with USB-C - Add registration init callback for race-free device setup Power-supply drivers: - new TI BQ25630 charger driver - new SG Micro sgm41542 charger driver - bq257xx: Add support for BQ25792 - max8903: add DC and USB input current-limit controls - max17042_battery: Initialize MAX17055 from battery info - sbs-battery: map newly introduced battery chemistries - drop extra error messages for IRQ request failures - lot's of driver removal race condition fixes - misc small cleanups and fixes Reset drivers: - add MCF5441x RCM power-on reason driver - misc small cleanups and fixes" * tag 'for-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (115 commits) power: supply: bq27xxx: bq27z561: fix invalid AverageEnergy address power: supply: bq27xxx: bq28z610: fix invalid AverageEnergy address power: supply: bq27xxx: bq27520g4: fix REG_TTES address power: supply: max17040: synchronize work cancellation on suspend power: supply: lp8727: fix use-after-free in lp8727_release_irq() power: supply: bq256xx: drain usb_work before freeing the charger power: supply: qcom_battmgr: fix battery chemistry strncmp length power: supply: bd99954: Drop bad register fields power: supply: bd71828: Do not hide errors power: supply: bd71828: Drop duplicate power-supply property power: supply: bd71828: Fix current direction power: supply: bd71815: Fix temperature reading power: supply: add stubs for notifier registration helpers power: supply: ucs1002: fix use-after-free on remove power: supply: lp8788-charger: fix use-after-free on remove power: supply: ab8500_fg: fix use-after-free on remove power: supply: bq24257: fix use-after-free on remove power: supply: qcom_battmgr: fix use-after-free power: supply: max17040: drop incorrect I2C functionality check power: supply: charger-manager: register regulators before exposing sysfs ... |
||
|
Linus Torvalds
|
21bd0802cd |
RDMA v7.3 merge window pull
Quite alot of buf fixes again:
- Assorted locking, bounds-checking, cleanup, and error-path fixes across
UCMA/CMA, bng_re, bnxt_re, cxgb4, EFA, ERDMA, HFI1, HNS, ionic, iRDMA,
mlx4/mlx5, RXE, SIW, SRP/SRPT, and iSER target.
- netlink report for max # of supported resources
- get_zeroed_page()/etc removal
- Robust udata for ionic
- Allow unique RDMA device names per network namespace
- Completion counters and v2 admit queue support for EFA
- UC QP support for MANA
- Completion timestamps for ionic
- Harden uverbs data validation and resource lifetime handling, fixing several core use-after-free conditions.
- bnxt_re toggle-page ownership and lifetime bug fixes
- dmabuf SRQ support for mlx5
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQRRRCHOFoQz/8F5bUaFwuHvBreFYQUCaoeO2wAKCRCFwuHvBreF
YcyJAQCn8JeqTuayLchCARJX+9fazTaJES9zj41i3M8a7BfxCAEA2b266g0S660m
7eQ761NiIb1iklSl9rmt8vM22EMcngM=
=qcwp
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull RDMA updates from Jason Gunthorpe:
"About the normal size, still a lot of AI bug fixes and so on, but some
interesting new functionality too:
- Assorted locking, bounds-checking, cleanup, and error-path fixes
across UCMA/CMA, bng_re, bnxt_re, cxgb4, EFA, ERDMA, HFI1, HNS,
ionic, iRDMA, mlx4/mlx5, RXE, SIW, SRP/SRPT, and iSER target.
- netlink report for max # of supported resources
- get_zeroed_page()/etc removal
- Robust udata for ionic
- Allow unique RDMA device names per network namespace
- Completion counters and v2 admit queue support for EFA
- UC QP support for MANA
- Completion timestamps for ionic
- Harden uverbs data validation and resource lifetime handling,
fixing several core use-after-free conditions.
- bnxt_re toggle-page ownership and lifetime bug fixes
- dmabuf SRQ support for mlx5"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (160 commits)
RDMA/ucma: Allow path records to exactly fit the output buffer
RDMA/uverbs: Guard legacy bundles without method_elm
RDMA/efa: Add support for 128B admin v2 SQ entry
RDMA/efa: Generalize the admin SQ
RDMA/efa: Decouple admin command payload from admin header
RDMA/rxe: Fix OOB in free_rd_atomic_resources()
RDMA/cma: Fix WARNING in res_to_rt
RDMA/cxgb4: Free debugfs on registration failure
RDMA/cxgb4: Cancel reg_work before freeing device on remove
RDMA/ucma: Lock the handler in ucma_set_ib_path()
RDMA/ucma: Lock the handler in ucma_write_cm_event()
RDMA/erdma: restrict the driver to little-endian systems
RDMA/ionic: Embed counter driver data in rdma_counter allocation
RDMA/ionic: Cap eq_count to the eth driver's interrupt vector budget
RDMA/siw: Fix use-after-free in siw_accept()
IB/isert: post the full-feature receive buffers after session registration
IB/isert: delay the final Login Response until the session is registered
RDMA/srp: fix heap information leak on a truncated SRP_CRED_REQ
RDMA/erdma: Hold QP references for AE and CM processing
RDMA/erdma: Hold CQ references when processing EQ events
...
|
||
|
Linus Torvalds
|
ed3b875bea |
mm.git review status for mm-hotfixes-stable..mm-stable
Everything:
Total patches: 501
Reviews/patch: 1.66
Reviewed rate: 70%
Excluding DAMON:
Total patches: 356
Reviews/patch: 2.26
Reviewed rate: 90%
Excluding DAMON and selftests:
Total patches: 329
Reviews/patch: 2.31
Reviewed rate: 92%
Excluding DAMON, selftests and maple_tree:
Total patches: 328
Reviews/patch: 2.31
Reviewed rate: 92%
Summary of patch series in this merge:
- The 2 patch series "mm: drop "sub" prefix from various places" from
Dev Jain implements some page->folio conversion and a naming cleanup.
- The 2 patch series "mm/kasan: remove redundant initialization for
kasan_flag_write_only" from Igor Putko provides some KASAN cleanup work.
- The 2 patch series "mm/filemap: reduce unnecessary xarray lookups"
from Chi Zhiling provides a small speedup in the pagecaache read code.
- The 4 patch series "mm/percpu: Fix possible NOFS/NOIO reclaim
recursion" from Kaitao Cheng improves a few things in the vmalloc code -
mainly the avoidance of GFP_KERNEL allocations when the caller asked for
GFP_NOFS or GFP_NOIO.
- The 3 patch series "mm/kmemleak: avoid soft lockup when scanning task
stacks" from Breno Leitao avoids a soft lockup watchdog trigger from the
kmemleak scanning code in extreme situations.
- The 6 patch series "mm/page_owner: misc cleanups" from Ye Liu is a
collection of unrelated cleanups to the page_owner code. For some
reason lots of people have been working on the page_owner code this
cycle.
- The 4 patch series "mm: convert to walk_page_range_vma() to eliminate
find_vma()" from Kefeng Wang simplifies and accelerates the page walking
library function.
- The 3 patch series "mm/migrate: preparatory cleanups for batch copy
and offload" from Shivank Garg implements cleanups in the migration
code.
- The 4 patch series "mm/page_owner: add per-fd filter infrastructure
for print_mode and NUMA filtering" from Zhen Ni provides per-fd
filtering to page_owner in order to reduce the sometimes vast amount of
output it can produce.
- The 19 patch series "mm: Refactor bootmem gigantic hugepage
allocation" from Muchun Song is a "set of fixes and preparatory cleanups
around bootmem HugeTLB handling, sparse initialization ordering, and
related vmemmap setup".
- The 4 patch series "mm/zsmalloc: reduce lock contention in zs_free()"
from Wenchao Hao reduces lock contention in zs_free(), which dominates
the unmap path under memory pressure on Android (LMK kills) and on x86
servers running zswap-heavy workloads. Up to 1.83x improvement in
microbenchmarking.
- The 2 patch series "move alloc_tag.c file under mm/" from Suren
Baghdasaryan does that.
- The 6 patch series "samples/damon: handle damon_{start,stop}()
failures" from SJ Park fixes improper handling of damon_start(),
damon_stop(), and damon_call() failures across DAMON sample modules to
prevent potential memory leaks, operation disruptions and use-after-free
bugs.
- The 11 patch series "mm/damon/sysfs: kobject_del() directories that
users can create/remove" from SJ Park resolves an issue where delayed
sysfs directory removal under CONFIG_DEBUG_KOBJECT_RELEASE causes
creation failures due to duplicate directory names by adding missing
kobject_del() calls before creating new directories.
- The 3 patch series "mm: cleanup clear_not_present_full_ptes()" from
David Hildenbrand cleans up the core pte handling code.
- The 3 patch series "selftests/damon: misc fixes for test bugs" from
Kunwu Chan fixes several bugs in the DAMON selftests.
- The 2 patch series "selftests/damon: fix memcg_path staging handling"
from Cheng Nie fixes a bug in _damon_sysfs.py for damos_filter
memcg_path setup, and adds a test case for it in sysfs.py.
- The 2 patch series "selftests/damon: test kdamond refresh_ms" from
Ruslan Valiyev introduces selftest coverage for DAMON's refresh_ms sysfs
feature by updating the test control module and verifying that scheme
stats update automatically without manual intervention.
- The 5 patch series "mm/damon: five misc fixups" from Akinobu Mita
contains miscellaneous DAMON fixups.
- The 2 patch series "mm/damon/core: detect internal variation above
max_nr_regions/2" from Jiayuan Chen fixes DAMON's region splitting
behavior when region counts exceed half the maximum budget by
dynamically scaling down the split fraction as the limit approaches,
preventing large regions from staying un-split, and adds corresponding
KUnit test coverage.
- The 6 patch series "mm: preparatory patches for PMD level swap
entries" from Usama Arif refactors and cleans up PMD softleaf helpers,
call sites, and architecture flags to lay the groundwork for a follow-up
series that introduces PMD page table swap entries.
- The 11 patch series "mm/damon: update, optimize, and clean up doc,
tests, and code" from SJ Park updates DAMON design and ABI
documentation, expands unit and selftest coverage, optimizes
damon_commit_target_regions(), and cleans up recently added sysfs
interface code for better readability.
- The 2 patch series "mm/vmpressure: reduce CPU, memory and code
overhead on cgroup v2" from Usama Arif optimizes vmpressure() by
skipping unnecessary work on cgroup v2 for userspace event notifications
and refactors v1-only eventfd handling into mm/memcontrol-v1.c to reduce
memory overhead and code complexity.
- The 10 patch series "selftests/mm: refactor pkey helpers and fix mmap
error handling" from Hongfu Li refactors pkeys shared tracing and
assertion helpers into a common file, unifies protection key selftests
to use consistent diagnostic logging and assertions, and enforces
standardized MAP_FAILED return checks for mmap() calls across the tests.
- The 18 patch series "mm/damon: optimize out nr_accesses_bp" from SJ
Park replaces the error-prone, continuously updated nr_accesses_bp field
in damon_region with an on-demand moving sum function
(damon_nr_accesses_mvsum()), reducing structure memory overhead and
avoiding state corruption bugs.
- The 6 patch series "Open HugeTLB allocation routine for more generic
use" from Ackerley Tng decouples HugeTLB folio allocation from VMA
dependencies by introducing hugetlb_alloc_folio(), enabling subsystems
like guest_memfd to allocate HugeTLB folios without standard VMA
reservations or pseudo-VMAs.
- The 3 patch series "mm/damon: provide pseudo moving sum probe_hits"
from SJ Park integrates DAMON's probe_hits attribute counter into the
pseudo moving sum infrastructure, enabling real-time, online monitoring
without waiting for full aggregation intervals.
- The 18 patch series "mm: Some cleanups for page allocator APIs" from
Brendan Jackman simplifies and refactors the page allocator entry points
and flags by unifying allocation paths, adding internal alloc_flags
arguments, and eliminating redundant __ prefixed alloc_pages variants.
- The 5 patch series "Fix incorrect access of hugetlb pte entries" from
Dev Jain enforces the consistent use of huge_ptep_get() instead of
ptep_get() for HugeTLB entries and fixes an unaligned address issue in
arm64's huge_ptep_get() implementation.
- The 8 patch series "mm/damon: validate all parameters in the core"
from SJ Park consolidates parameter validation into the DAMON core
specifically within damon_start() and damon_commit_ctx() to centralize
error checking, eliminate caller-side redundant checks and to improve
maintenance efficiency.
- The 3 patch series "tools/mm/page_owner_sort: fix filtering and
cleanup issues" from Yichong Chen renames is_need() to filter_record()
for clearer return semantics, fixes per-record allocation memory leaks
and bounds output copies in search_pattern() to address an existing
buffer issue.
- The 4 patch series "memcg: bail out reclaim when memcg is dying" from
Jiayuan Chen mitigates a system-wide stall which occurs when a cgroup is
removed while one of its memory control files is doing synchronous
reclaim.
- The 5 patch series "mm/memory-failure: add panic option for
unrecoverable pages" from Breno Leitao introduces an opt-in
vm.panic_on_unrecoverable_memory_failure sysctl that immediately panics
the kernel on unrecoverable memory errors in kernel-owned pages to
preserve error context and prevent delayed, silent data corruption.
- The 11 patch series "mm/damon: refactor damon_{start,stop,commit}()
for simple error handling" from SJ Park refactors the DAMON core API
functions to guarantee that all contexts are fully stopped when
damon_start(), damon_stop(), or damon_commit() fail, eliminating the
need for complex and error-prone caller-side cleanup code.
- The 5 patch series "Keep tail page private zero at free and folio
split" from Zi Yan adds checks to ensure tail_page->private is zero when
freeing compound or high-order pages and when promoting tail pages
during large folio splits. By validating these fields at free and split
time, it allows the removal of redundant private field clearing inside
prep_compound_tail().
- The 4 patch series "mm: drop redundant lru_add_drain in anon folio
reuse paths" from Barry Song eliminates redundant lru_add_drain() calls
in wp_can_reuse_anon_folio() and do_swap_page() to reduce LRU lock
contention and system overhead.
By validating folio refcounts against the LRU cache before draining
and removing unnecessary drains in the swap path, it achieves up to a
30.5% reduction in drain calls during heavy swap workloads.
- The 3 patch series "mm: clean up folio LRU and swap declarations" from
Jianyue Wu reorganizes folio LRU and swap code by relocating
page-cluster state to mm/swap_state.c, renaming mm/swap.c to mm/folio.c,
and moving MM-internal reclaim declarations into mm/internal.h.
- The 15 patch series "userfaultfd: working set tracking for VM guest
memory" from Kiryl Shutsemau adds userfaultfd support for tracking the
working set of VM guest memory, so a VMM can identify hot pages and
reclaim cold ones to tiered or remote storage.
- The 10 patch series "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part
2)" from David Hildenbrand removes the remaining pieces of
CONFIG_HAVE_BOOTMEM_INFO_NODE, performing some smaller cleanups around
freeing of reserved vmemmap pages on the way.
- The 7 patch series "mm/damon: update probe hits for runtime parameter
commits" from SJ Park ensures that DAMON's probe_hits attribute counter
is properly updated when monitoring intervals are changed at runtime,
matching the behavior of nr_accesses. To achieve this, it refactors and
renames existing helper functions for shared use, applies the updates to
probe_hits, and handles edge cases in damon_probe_hits_mvsum() to
maintain measurement accuracy.
- The 3 patch series "KSM: performance optimizations for rmap_walk_ksm"
from xu xin resolves a severe KSM reverse-mapping performance bottleneck
where thousands of split VMAs sharing a single anon_vma cause extended
lock contention. By adding an interval-filtering check during the rmap
walk, it reduces worst-case anon_vma lock hold times from over 500ms
down to under 2ms, preventing application freezes and latency spikes
under memory pressure.
- The 3 patch series "mm: split a couple of headers from internal.h"
from Mike Rapoport splits declarations related to mm_init, memblock,
vmalloc and sparse into new headers.
- The 2 patch series "KSM: use linear_page_index in collect_procs_ksm()"
from xu xin applies the interval tree optimization from rmap_walk_ksm()
to collect_procs_ksm() to avoid iterating over non-matching VMAs during
KSM memory error handling. It hoists loop-invariant address
initialization and restricts the anon_vma_interval_tree_foreach walk to
a targeted page offset range, reducing redundant checks and improving
lookup efficiency.
- The 3 patch series "selftests/mm: avoid false failures in hugetlb and
KSM tests" from Sayali Patil fixes issues in the hugetlb and KSM MM
selftest categories that can report failures when the prerequisites for
the tests are not satisfied.
- The 19 patch series "mm/damon: introduce data attributes only
monitoring" from SJ Park introduces attribute-weighted region management
in DAMON, allowing users to prioritize specific data attributes (such as
page sizes or cgroups) over or instead of access monitoring.
By assigning weights to attribute probes, DAMON can completely disable
access tracking and adjust monitoring regions based on weighted
probe-hit counters to optimize monitoring quality for attribute-focused
workloads.
- The 8 patch series "mm/hmm: Add mmap lock-drop support for
userfaultfd-backed mappings" from Stanislav Kinsburskii extends
hmm_range_fault() to support userfaultfd-backed regions by allowing the
mmap lock to be dropped during fault handling via a new
hmm_range_fault_locked() helper.
By accepting a locked pointer and signaling retry status when lock
release occurs, it enables page fault resolution in userfaultfd regions
while preserving backward compatibility for existing callers.
- The 33 patch series "mm: make VMA page offset handling more
consistent" from Lorenzo Stoakes cleans up and standardizes how
vma->vm_pgoff is accessed and manipulated across file-backed and
anonymous mappings in the kernel.
It introduces dedicated helper functions such as vma_start_pgoff(),
vma_end_pgoff(), vma_set_pgoff() and linear_page_delta() while renaming
rmap interval tree helpers to better reflect their functionality.
These changes establish a cleaner foundation for future work that will
unify virtual page offset indexing for all anonymous and CoW'd folios.
- The 3 patch series "mm: handle device-private PMDs in walk callbacks"
from Usama Arif addresses kernel panics and state corruption caused by
MM walk callbacks reaching non-present device-private PMD swap entries
created during HMM migrations.
It ensures that functions which acquire pmd_trans_huge_lock() properly
recognize device-private PMDs instead of assuming a present THP or a
standard migration entry.
- The 5 patch series "mm/rmap: Refactor try_to_unmap_one" from Dev Jain
refactors try_to_unmap_one by modularizing Hugetlb, anonymous-lazyfree,
and anonymous-swapbacked logic into dedicated functions, laying the
structural groundwork for batched anonymous large folio unmapping.
- The 4 patch series "Docs/ABI/damon: sysfs ABI document fixes and
additions" from Song Hu fixes typos and fills in missing entries in the
DAMON sysfs ABI document.
- The 10 patch series "dax/kmem: atomic whole-device hotplug via sysfs"
from Gregory Price introduces an atomic sysfs state attribute and
supporting DAX/MM infrastructure to prevent userland races when
offlining and removing entire memory regions.
By adding an unplugged state alongside standard online modes, it
enables whole-device atomic hotplug control while preserving backward
compatibility.
- The 13 patch series "mm: convert more vm_flags_t users to vma_flags_t"
from Lorenzo Stoakes continues transitioning the kernel from the
deprecated vm_flags_t type to vma_flags_t across core memory management
infrastructure.
It replaces legacy type usage in core functions such as do_mmap(),
unmapped area allocation, mm->def_vma_flags, and VMA operations like
mlock, mprotect, and mremap.
- The 2 patch series "Two small patches to clean up mm/mm_slot.h" from
xu xin refactors mm_slot.h by introducing mm_slot_remove() to unify
duplicate slot deletion sequences in khugepaged and KSM. It also adds
code documentation explaining why mm_slot_lookup and mm_slot_insert must
remain as preprocessor macros rather than static inline functions.
- The 10 patch series "mm/damon/core: hide core-private struct fields"
from SJ Park cleans up DAMON core structures by consistently marking
internal-only fields with private: comment tags to prevent improper
direct access from outer layers.
It enforces encapsulation across core structures including
damon_region, damon_target, and damon_ctx and updates DAMON_SYSFS to
interact through approved access APIs instead of exposing raw struct
members.
- The 6 patch series "mm/damon: unurgent fixes for infinite loop, NULL
de-ref and races" from SJ Park addresses potential infinite loops, NULL
dereferences, and race conditions identified in DAMON.
It fixes an infinite loop triggered by extreme user configurations, a
NULL pointer dereference within unit tests and minor monitoring
accuracy degradation caused by subtle runtime races.
- The 2 patch series "mm/page_alloc: fixes for free_pages_nolock() on
RT/UP" from Brendan Jackman fixes an NMI safety flaw in
__free_frozen_pages() where freeing pages on non-SMP or PREEMPT_RT
kernels can bypass can_spin_trylock() checks via non-PCP or isolated
migration paths.
It also resolves potential kernel crashes and privilege escalation
risks triggered when BPF tracing runs in NMI context alongside memory
hotplug or large allocation frees.
- The 4 patch series "mm/page_alloc: couple of followups for recent
cleanups" from Brendan Jackman cleans up and updates page allocator
nomenclature, documentation, and debug assertions.
It aligns internal FPI_ flags with the public "nolock" naming
convention, removes outdated internal implementation details from
high-level page allocator comments, and eliminates obsolete VM_BUG_ON()
assertions in allocation paths.
- The 3 patch series "mm/mseal: further cleanups" from Lorenzo Stoakes
refactors and simplifies the mseal implementation by clarifying API
boundaries and removing unnecessary code complexity.
It replaces generic do_mseal() usage outside the syscall with a
dedicated mseal_mmap_page_zero() helper for MMAP_PAGE_ZERO, eliminates
mm_struct parameters to enforce that sealing applies only to
current->mm, and streamlines overall logic and comments with no
functional changes intended.
- The 4 patch series "mm/vmscan: fix swappiness=max and clean up
per-node proactive reclaim" from Ridong Chen resolves reclaim behavior
bugs and cleans up function parameters across memory reclaim paths.
It fixes swappiness=max in both standard reclaim and MGLRU so
unswappable anonymous memory no longer falls back to evicting page
cache, ensures reclaim_store() returns accurate error codes instead of
collapsing all failures into -EAGAIN, and removes the obsolete gfp_mask
parameter from __node_reclaim().
- The 6 patch series "mm: mincore: misc cleanups" from Kefeng Wang
cleans up and simplifies the mincore code. Most importantly, it removes
the historical special behavior that always reports VM_PFNMAP pages as
non-resident.
- The 2 patch series "mm/huge_memory: drop dead split helper variants"
from Kiryl Shutsemau implements two trivial cleanups in the folio split
API.
- The 7 patch series "mm/damon: fix uninitialized DAMOS field and kunit
exec expectation bugs" from SJ Park resolves minor operational and
testing bugs in DAMON identified by Sashiko. It initializes the
damos->last_applied field to prevent occasional efficiency degradation
and fixes invalid memory accesses in DAMON KUnit tests during test
failure handling.
- The 3 patch series "cleanup for stable_page_flags()" from Jinjiang Tu
cleans up and refactors stable_page_flags() used by /proc/kpageflags
without altering functionality.
It uses BIT_ULL() to prevent shift-overflow warnings on 64-bit flag
bits, converts folio-specific flag checks to standard folio_test_*()
helpers, and removes redundant CONFIG_PAGE_IDLE_FLAG handling.
- The 3 patch series "Batch unmap of uffd-wp file folios" from Dev Jain
extends batched folio unmapping support to file folios within
userfaultfd write-protect (uffd-wp) VMAs by adding batching capabilities
to pte_install_uffd_wp_if_needed().
This removes special-case restrictions on uffd-wp VMAs in
try_to_unmap_one(), significantly simplifying the function's control
flow and complexity.
- The 3 patch series "mm/early_ioremap: clarify and clean up
early_ioremap_reset()" from Sang-Heon Jeon clarifies and cleans up the
architecture-specific usage of __late_set_fixmap() and
__late_clear_fixmap() after early_ioremap_reset().
It adds explicit documentation regarding when early_ioremap_reset()
must be called and removes redundant macro definitions and reset calls
in the RISC-V and ARM64 architectures.
- The 4 patch series "mm: fix reclaim storms in defrag_mode" from
Johannes Weiner addresses severe performance regressions, swap storms,
and spurious OOMs caused by vm.defrag_mode=1 under high memory pressure
in Meta production.
It updates the page allocator slowpath so non-movable allocation
requests actively trigger direct reclaim and direct compaction at
pageblock_order scale, allowing them to claim whole pageblocks rather
than spinning unproductively.
- The 2 patch series "zram: lockmap tweaks" from Sebastian Siewior
optimizes and fixes lockdep tracking for zram devices by consolidating
per-entry lockmaps and isolating lock classes across multiple instances.
It reduces memory overhead by replacing per-entry lockdep_map instances
with a single map per struct zram, and assigns a dynamic lock_class_key
to each instance to prevent false deadlock reports when different zram
devices are backed by distinct filesystems.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCaoUJbQAKCRDdBJ7gKXxA
jqrzAP9WoPU0hiK4qS/kSjhtoZxhjpS5eLSUCy/utKuEvZbfGgEAu1zA+LH+X9Tm
THK5ex4iUZxiFbXpWfLMxE/Q9PmQYQ8=
=QTyb
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- "mm: drop "sub" prefix from various places" (Dev Jain)
page->folio conversion and a naming cleanup
- "mm/kasan: remove redundant initialization for kasan_flag_write_only"
(Igor Putko)
KASAN cleanup work
- "mm/filemap: reduce unnecessary xarray lookups" (Chi Zhiling)
Small speedup in the pagecaache read code
- "mm/percpu: Fix possible NOFS/NOIO reclaim recursion" (Kaitao Cheng)
Improve the vmalloc code - mainly the avoidance of GFP_KERNEL
allocations when the caller asked for GFP_NOFS or GFP_NOIO
- "mm/kmemleak: avoid soft lockup when scanning task stacks" (Breno
Leitao)
Avoid a soft lockup watchdog trigger from the kmemleak scanning code
in extreme situations
- "mm/page_owner: misc cleanups" (Ye Liu)
Cleanups to the page_owner code. For some reason lots of people have
been working on the page_owner code this cycle.
- "mm: convert to walk_page_range_vma() to eliminate find_vma()"
(Kefeng Wang)
Simplify and accelerate the page walking library function
- "mm/migrate: preparatory cleanups for batch copy and offload"
(Shivank Garg)
Cleanups in the migration code
- "mm/page_owner: add per-fd filter infrastructure for print_mode and
NUMA filtering" (Zhen Ni)
Per-fd filtering to page_owner in order to reduce the sometimes vast
amount of output it can produce
- "mm: Refactor bootmem gigantic hugepage allocation" (Muchun Song)
Fixes and preparatory cleanups around bootmem HugeTLB handling,
sparse initialization ordering, and related vmemmap setup
- "mm/zsmalloc: reduce lock contention in zs_free()" (Wenchao Hao)
Reduce lock contention in zs_free(), which dominates the unmap path
under memory pressure on Android (LMK kills) and on x86 servers
running zswap-heavy workloads.
Up to 1.83x improvement in microbenchmarking.
- "move alloc_tag.c file under mm/" (Suren Baghdasaryan)
- "samples/damon: handle damon_{start,stop}() failures" (SJ Park)
Fix improper handling of damon_start(), damon_stop(), and
damon_call() failures across DAMON sample modules to prevent
potential memory leaks, operation disruptions and use-after-free
bugs
- "mm/damon/sysfs: kobject_del() directories that users can
create/remove" (SJ Park)
Fix delayed sysfs directory removal under DEBUG_KOBJECT_RELEASE
causeing creation failures due to duplicate directory names by adding
missing kobject_del() calls before creating new directories
- "mm: cleanup clear_not_present_full_ptes()" (David Hildenbrand)
Clean up the core pte handling code
- "selftests/damon: misc fixes for test bugs" (Kunwu Chan)
Fix several bugs in the DAMON selftests
- "selftests/damon: fix memcg_path staging handling" (Cheng Nie)
Fix a bug in _damon_sysfs.py for damos_filter memcg_path setup, and
add a test case for it in sysfs.py.
- "selftests/damon: test kdamond refresh_ms" (Ruslan Valiyev)
Selftest coverage for DAMON's refresh_ms sysfs feature by updating
the test control module and verifying that scheme stats update
automatically without manual intervention
- "mm/damon: five misc fixups" (Akinobu Mita)
Miscellaneous DAMON fixups.
- "mm/damon/core: detect internal variation above max_nr_regions/2"
(Jiayuan Chen)
Fix DAMON's region splitting behavior when region counts exceed half
the maximum budget by dynamically scaling down the split fraction as
the limit approaches, preventing large regions from staying un-split,
and add corresponding KUnit test coverage
- "mm: preparatory patches for PMD level swap entries" (Usama Arif)
Refactor and clean up PMD softleaf helpers, call sites, and
architecture flags to lay the groundwork for a follow-up series that
introduces PMD page table swap entries
- "mm/damon: update, optimize, and clean up doc, tests, and code" (SJ
Park)
Update DAMON design and ABI documentation, expands unit and selftest
coverage, optimize damon_commit_target_regions(), and clean up
recently added sysfs interface code for better readability
- "mm/vmpressure: reduce CPU, memory and code overhead on cgroup v2"
(Usama Arif)
Optimize vmpressure() by skipping unnecessary work on cgroup v2 for
userspace event notifications and refactor v1-only eventfd handling
into mm/memcontrol-v1.c to reduce memory overhead and code complexity
- "selftests/mm: refactor pkey helpers and fix mmap error handling"
(Hongfu Li)
Refactor pkeys shared tracing and assertion helpers into a common
file, unify protection key selftests to use consistent diagnostic
logging and assertions, and enforce standardized MAP_FAILED return
checks for mmap() calls across the tests
- "mm/damon: optimize out nr_accesses_bp" (SJ Park)
Replace the error-prone, continuously updated nr_accesses_bp field in
damon_region with an on-demand moving sum function, reducing
structure memory overhead and avoiding state corruption bugs
- "Open HugeTLB allocation routine for more generic use" (Ackerley Tng)
Decouple HugeTLB folio allocation from VMA dependencies by
introducing hugetlb_alloc_folio(), enabling subsystems like
guest_memfd to allocate HugeTLB folios without standard VMA
reservations or pseudo-VMAs
- "mm/damon: provide pseudo moving sum probe_hits" (SJ Park)
Integrate DAMON's probe_hits attribute counter into the pseudo moving
sum infrastructure, enabling real-time, online monitoring without
waiting for full aggregation intervals
- "mm: Some cleanups for page allocator APIs" (Brendan Jackman)
Simplify and refactor the page allocator entry points and flags by
unifying allocation paths, adding internal alloc_flags arguments, and
eliminating redundant __ prefixed alloc_pages variants.
- "Fix incorrect access of hugetlb pte entries" (Dev Jain)
Enforce the consistent use of huge_ptep_get() instead of ptep_get()
for HugeTLB entries and fixes an unaligned address issue in arm64's
huge_ptep_get() implementation
- "mm/damon: validate all parameters in the core" (SJ Park)
Consolidate parameter validation into the DAMON core specifically
within damon_start() and damon_commit_ctx() to centralize error
checking, eliminate caller-side redundant checks and to improve
maintenance efficiency
- "tools/mm/page_owner_sort: fix filtering and cleanup issues" (Yichong
Chen)
Rename is_need() to filter_record() for clearer return semantics, fix
per-record allocation memory leaks and bound output copies in
search_pattern() to address an existing buffer issue
- "memcg: bail out reclaim when memcg is dying" (Jiayuan Chen)
Mitigate a system-wide stall which occurs when a cgroup is removed
while one of its memory control files is doing synchronous reclaim
- "mm/memory-failure: add panic option for unrecoverable pages" (Breno
Leitao)
Introduce an opt-in vm.panic_on_unrecoverable_memory_failure sysctl
that immediately panics the kernel on unrecoverable memory errors in
kernel-owned pages to preserve error context and prevent delayed,
silent data corruption
- "mm/damon: refactor damon_{start,stop,commit}() for simple error
handling" (SJ Park)
Refactor the DAMON core API functions to guarantee that all contexts
are fully stopped when damon_start(), damon_stop(), or damon_commit()
fail, eliminating the need for complex and error-prone caller-side
cleanup code
- "Keep tail page private zero at free and folio split" (Zi Yan)
Add checks to ensure tail_page->private is zero when freeing compound
or high-order pages and when promoting tail pages during large folio
splits. By validating these fields at free and split time, it allows
the removal of redundant private field clearing inside
prep_compound_tail()
- "mm: drop redundant lru_add_drain in anon folio reuse paths" (Barry
Song)
Eliminate redundant lru_add_drain() calls in
wp_can_reuse_anon_folio() and do_swap_page() to reduce LRU lock
contention and system overhead
By validating folio refcounts against the LRU cache before draining
and removing unnecessary drains in the swap path, it achieves up to a
30.5% reduction in drain calls during heavy swap workloads
- "mm: clean up folio LRU and swap declarations" (Jianyue Wu)
Reorganize folio LRU and swap code by relocating page-cluster state
to mm/swap_state.c, renaming mm/swap.c to mm/folio.c, and moving
MM-internal reclaim declarations into mm/internal.h.
- "userfaultfd: working set tracking for VM guest memory" (Kiryl
Shutsemau)
Add userfaultfd support for tracking the working set of VM guest
memory, so a VMM can identify hot pages and reclaim cold ones to
tiered or remote storage
- "mm: remove CONFIG_HAVE_BOOTMEM_INFO_NODE (Part 2)" (David
Hildenbrand)
Remove the remaining pieces of CONFIG_HAVE_BOOTMEM_INFO_NODE,
performing some smaller cleanups around freeing of reserved vmemmap
pages on the way.
- "mm/damon: update probe hits for runtime parameter commits" (SJ Park)
Ensure that DAMON's probe_hits attribute counter is properly updated
when monitoring intervals are changed at runtime, matching the
behavior of nr_accesses. To achieve this, it refactors and renames
existing helper functions for shared use, applies the updates to
probe_hits, and handles edge cases in damon_probe_hits_mvsum() to
maintain measurement accuracy.
- "KSM: performance optimizations for rmap_walk_ksm" (xu xin)
Resolve a severe KSM reverse-mapping performance bottleneck where
thousands of split VMAs sharing a single anon_vma cause extended lock
contention.
By adding an interval-filtering check during the rmap walk, it
reduces worst-case anon_vma lock hold times from over 500ms down to
under 2ms, preventing application freezes and latency spikes under
memory pressure.
- "mm: split a couple of headers from internal.h" (Mike Rapoport)
Split declarations related to mm_init, memblock, vmalloc and sparse
into new headers
- "KSM: use linear_page_index in collect_procs_ksm()" (xu xin)
Apply the interval tree optimization from rmap_walk_ksm() to
collect_procs_ksm() to avoid iterating over non-matching VMAs during
KSM memory error handling.
It hoists loop-invariant address initialization and restricts the
anon_vma_interval_tree_foreach walk to a targeted page offset range,
reducing redundant checks and improving lookup efficiency.
- "selftests/mm: avoid false failures in hugetlb and KSM tests" (Sayali
Patil)
Fix issues in the hugetlb and KSM MM selftest categories that can
report failures when the prerequisites for the tests are not
satisfied
- "mm/damon: introduce data attributes only monitoring" (SJ Park)
Introduce attribute-weighted region management in DAMON, allowing
users to prioritize specific data attributes (such as page sizes or
cgroups) over or instead of access monitoring.
By assigning weights to attribute probes, DAMON can completely
disable access tracking and adjust monitoring regions based on
weighted probe-hit counters to optimize monitoring quality for
attribute-focused workloads.
- "mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings"
(Stanislav Kinsburskii)
Extend hmm_range_fault() to support userfaultfd-backed regions by
allowing the mmap lock to be dropped during fault handling via a new
hmm_range_fault_locked() helper.
By accepting a locked pointer and signaling retry status when lock
release occurs, it enables page fault resolution in userfaultfd
regions while preserving backward compatibility for existing callers.
- "mm: make VMA page offset handling more consistent" (Lorenzo Stoakes)
Clean up and standardize how vma->vm_pgoff is accessed and
manipulated across file-backed and anonymous mappings in the kernel
It introduces dedicated helper functions such as vma_start_pgoff(),
vma_end_pgoff(), vma_set_pgoff() and linear_page_delta() while
renaming rmap interval tree helpers to better reflect their
functionality.
These changes establish a cleaner foundation for future work that
will unify virtual page offset indexing for all anonymous and CoW'd
folios.
- "mm: handle device-private PMDs in walk callbacks" (Usama Arif)
Address kernel panics and state corruption caused by MM walk
callbacks reaching non-present device-private PMD swap entries
created during HMM migrations
It ensures that functions which acquire pmd_trans_huge_lock()
properly recognize device-private PMDs instead of assuming a present
THP or a standard migration entry.
- "mm/rmap: Refactor try_to_unmap_one" (Dev Jain)
Refactor try_to_unmap_one by modularizing Hugetlb,
anonymous-lazyfree, and anonymous-swapbacked logic into dedicated
functions, laying the structural groundwork for batched anonymous
large folio unmapping.
- "Docs/ABI/damon: sysfs ABI document fixes and additions" (Song Hu)
Fix typos and fills in missing entries in the DAMON sysfs ABI
document
- "dax/kmem: atomic whole-device hotplug via sysfs" (Gregory Price)
Introduce an atomic sysfs state attribute and supporting DAX/MM
infrastructure to prevent userland races when offlining and removing
entire memory regions
By adding an unplugged state alongside standard online modes, it
enables whole-device atomic hotplug control while preserving backward
compatibility.
- "mm: convert more vm_flags_t users to vma_flags_t" (Lorenzo Stoakes)
Continue transitioning the kernel from the deprecated vm_flags_t type
to vma_flags_t across core memory management infrastructure.
It replaces legacy type usage in core functions such as do_mmap(),
unmapped area allocation, mm->def_vma_flags, and VMA operations like
mlock, mprotect, and mremap.
- "Two small patches to clean up mm/mm_slot.h" (xu xin)
Refactor mm_slot.h by introducing mm_slot_remove() to unify duplicate
slot deletion sequences in khugepaged and KSM. It also adds code
documentation explaining why mm_slot_lookup and mm_slot_insert must
remain as preprocessor macros rather than static inline functions.
- "mm/damon/core: hide core-private struct fields" (SJ Park)
Clean up DAMON core structures by consistently marking internal-only
fields with private: comment tags to prevent improper direct access
from outer layers.
It enforces encapsulation across core structures including
damon_region, damon_target, and damon_ctx and updates DAMON_SYSFS to
interact through approved access APIs instead of exposing raw struct
members.
- "mm/damon: unurgent fixes for infinite loop, NULL de-ref and races"
(SJ Park)
Address potential infinite loops, NULL dereferences, and race
conditions identified in DAMON
It fixes an infinite loop triggered by extreme user configurations, a
NULL pointer dereference within unit tests and minor monitoring
accuracy degradation caused by subtle runtime races.
- "mm/page_alloc: fixes for free_pages_nolock() on RT/UP" (Brendan
Jackman)
Fix an NMI safety flaw in __free_frozen_pages() where freeing pages
on non-SMP or PREEMPT_RT kernels can bypass can_spin_trylock() checks
via non-PCP or isolated migration paths.
It also resolves potential kernel crashes and privilege escalation
risks triggered when BPF tracing runs in NMI context alongside memory
hotplug or large allocation frees.
- "mm/page_alloc: couple of followups for recent cleanups" (Brendan
Jackman)
Clean up and update page allocator nomenclature, documentation, and
debug assertions.
It aligns internal FPI_ flags with the public "nolock" naming
convention, removes outdated internal implementation details from
high-level page allocator comments, and eliminates obsolete
VM_BUG_ON() assertions in allocation paths.
- "mm/mseal: further cleanups" (Lorenzo Stoakes)
Refactor and simplify the mseal implementation by clarifying API
boundaries and removing unnecessary code complexity.
It replaces generic do_mseal() usage outside the syscall with a
dedicated mseal_mmap_page_zero() helper for MMAP_PAGE_ZERO,
eliminates mm_struct parameters to enforce that sealing applies only
to current->mm, and streamlines overall logic and comments with no
functional changes intended.
- "mm/vmscan: fix swappiness=max and clean up per-node proactive
reclaim" (Ridong Chen)
Resolve reclaim behavior bugs and clean up function parameters across
memory reclaim paths
It fixes swappiness=max in both standard reclaim and MGLRU so
unswappable anonymous memory no longer falls back to evicting page
cache, ensures reclaim_store() returns accurate error codes instead
of collapsing all failures into -EAGAIN, and removes the obsolete
gfp_mask parameter from __node_reclaim().
- "mm: mincore: misc cleanups" (Kefeng Wang)
Clean up and simplifies the mincore code. Most importantly, it
removes the historical special behavior that always reports VM_PFNMAP
pages as non-resident.
- "mm/huge_memory: drop dead split helper variants" (Kiryl Shutsemau)
Two trivial cleanups in the folio split API
- "mm/damon: fix uninitialized DAMOS field and kunit exec expectation
bugs" (SJ Park)
Resolve minor operational and testing bugs in DAMON identified by
Sashiko. It initializes the damos->last_applied field to prevent
occasional efficiency degradation and fixes invalid memory accesses
in DAMON KUnit tests during test failure handling.
- "cleanup for stable_page_flags()" (Jinjiang Tu)
Clean up and refactor stable_page_flags() used by /proc/kpageflags
without altering functionality.
It uses BIT_ULL() to prevent shift-overflow warnings on 64-bit flag
bits, converts folio-specific flag checks to standard folio_test_*()
helpers, and removes redundant CONFIG_PAGE_IDLE_FLAG handling.
- "Batch unmap of uffd-wp file folios" (Dev Jain)
Extend batched folio unmapping support to file folios within
userfaultfd write-protect (uffd-wp) VMAs by adding batching
capabilities to pte_install_uffd_wp_if_needed().
This removes special-case restrictions on uffd-wp VMAs in
try_to_unmap_one(), significantly simplifying the function's control
flow and complexity.
- "mm/early_ioremap: clarify and clean up early_ioremap_reset()"
(Sang-Heon Jeon)
Clarify and clean up the architecture-specific usage of
__late_set_fixmap() and __late_clear_fixmap() after
early_ioremap_reset()
It adds explicit documentation regarding when early_ioremap_reset()
must be called and removes redundant macro definitions and reset
calls in the RISC-V and ARM64 architectures.
- "mm: fix reclaim storms in defrag_mode" (Johannes Weiner)
Address severe performance regressions, swap storms, and spurious
OOMs caused by vm.defrag_mode=1 under high memory pressure in Meta
production
It updates the page allocator slowpath so non-movable allocation
requests actively trigger direct reclaim and direct compaction at
pageblock_order scale, allowing them to claim whole pageblocks rather
than spinning unproductively.
- "zram: lockmap tweaks" (Sebastian Siewior)
Optimize and fix lockdep tracking for zram devices by consolidating
per-entry lockmaps and isolate lock classes across multiple instances
This reduces memory overhead by replacing per-entry lockdep_map
instances with a single map per struct zram, and assigns a dynamic
lock_class_key to each instance to prevent false deadlock reports
when different zram devices are backed by distinct filesystems.
* tag 'mm-stable-2026-08-18-18-39' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (501 commits)
selftests/mm: thuge-gen: fix test_shmget() for PAGE_SIZE check
selftests/mm: unpoison pages in memory-failure teardown
mm/shmem: downgrade final i_blocks check in shmem_evict_inode() to pr_warn()
mm/khugepaged: replace mutex_lock/mutex_unlock usage with guard macro
mm/zsmalloc: fix release order of locks in zs_page_migrate()
Documentation: zram: remove sections numbering
ksm: stop iterating VMAs when ksm_test_exit returns true
mm: fold userfaultfd_rwp() to false without CONFIG_ARCH_HAS_PTE_PROTNONE
mm/migrate: report RCU-tasks quiescent states in migrate_pages_batch()
zram: use a custom key for each zram object
zram: move lockmap to be per-zram instead per table
selftests/mm: fix gup_longterm EINVAL error message
mm: page_alloc: fix non-movable reclaim storm in defrag_mode
mm: page_alloc: move capture_control to the page allocator
mm: compaction: support non-movable compaction for pageblock requests
mm: page_alloc: __GFP_FS lockdep annotation for direct compaction
hugetlb: evaluate subpool free state while locked
mm/damon: remove trailing semicolons after function definitions
mm/damon/ops-common: prevent migration fallback to non-target nodes
mm/damon: update outdated comment about DAMOS filter handling
...
|
||
|
Linus Torvalds
|
7f063b2f17 |
vhost,vdpa,virtio: fixes, features
- transport v3 support in virtio-mmio - suspend support in vduse - fixes, cleanups all over the place Signed-off-by: Michael S. Tsirkin <mst@redhat.com> -----BEGIN PGP SIGNATURE----- iQFDBAABCgAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmqF3YcPHG1zdEByZWRo YXQuY29tAAoJECgfDbjSjVRph3oH/RxUHWzRWDFhaDNLBz8ZIkwQlkX6+pkAxhEf zkiMCI/SRLi1R7mg74ARuFvR/3LWZCtB1JUdY4R49pZ5yjkzcxW3E8pNdoqxmbkv 3S06idrDGzAPLTpjn/RnT9CLmPFjyD/0L2VDbH406VplNy4QFo8jI0IA8720f/2b JeV03jYr9hCSwZJKxPKnWnBKGHJ2F9TwdIim7heo4+kFPe60dkra8VwwQQ5XpYBa mAgRJwZ04y2pAyunRP7wYRQKEbyWn/3bBDUDP2rNNnzuSQMngXrlhKDYRjugxMia JDLQIE6TwEOB7hy7QhuPwfwAelDdjF/veMN038ejjXZyMaZNZmo= =ln0X -----END PGP SIGNATURE----- Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost Pull vhost,vdpa,virtio updates from Michael Tsirkin: - transport v3 support in virtio-mmio - suspend support in vduse - fixes, cleanups all over the place * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: (54 commits) vduse: Add suspend vduse: do not take rwsem at reset work flush vduse: add F_QUEUE_READY feature vduse: add VDUSE_SET_FEATURES ioctl vduse: add VDUSE_GET_FEATURES ioctl vduse: store control device pointer tools/virtio: Fix control typo in trace agent comment tools/virtio: Fix userspace typo in vringh test comment vhost: reject zero-size IOTLB INVALIDATE vdpa: Remove redundant dev_err() virtio_ring: fix infinite loop in virtnet_poll_cleantx when device is broken vdpa/mlx5: roll back MR update after VQ setup failure MAINTAINERS: remove Gabriel from LiteX and fw-cfg drivers virtio_mem: fix typo in comment vdpa/solidrun: fix typos in snet_ctrl comments virtio: fix article before virtio in dma-buf comment vhost: fix inaccurate kdoc in iotlb helpers virtio: rtc: time out alarm requests vdpa/mlx5: fix wrong MLX5_ADDR_OF struct type in alloc_inout() vdpa: octeon_ep: add missing MODULE_DEVICE_TABLE() ... |
||
|
Linus Torvalds
|
a625b2a387 |
VFIO updates for v7.3-rc1
- Add nv_falcon vfio selftest driver. The Falcon is a general-purpose
microcontroller embedded within NVIDIA GPUs, presenting a relatively
simple DMA programming interface. This adds another selftest target
for vfio-pci with real DMA transfers. (Rubin Du, Alex Williamson)
- Add allocation assertion helpers to vfio selftests and use them to
avoid variable length arrays and the compiler errors they generate.
(Alex Mastro)
- Fix use-after-free hazard where an init path error in MSI support
leaves a stray pointer that can later be reused or double-freed.
(Xiang Mei)
- Fix previous refactor of PCI BAR mappings to honor non_mappable_bars
flag, which otherwise generates a warning when trying to pci_iomap()
a 256TiB BAR on ISM devices on s390. (Farhan Ali)
- Add igb vfio selftest driver. Like nv_falcon, this provides another
target for DMA testing with vfio selftests, but importantly this
driver supports both physical 82576 NICs and the emulation model in
QEMU. This therefore enables a vfio selftest vector with no physical
hardware requirements. (Josh Hilke, Alex Williamson)
- Mark selftest fixture objects __maybe_unused to accommodate builds
with clang -Wunused-but-set-global. (David Matlack)
- Add error recovery for vfio-pci devices on s390x. This expands
devices which expose the existing error eventfd and introduces a
device feature for reporting firmware defined error state
information to the user, allowing recovery through hypervisor
channels. (Farhan Ali)
-----BEGIN PGP SIGNATURE-----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=hR5/
-----END PGP SIGNATURE-----
Merge tag 'vfio-v7.3-rc1' of https://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson:
- Add nv_falcon vfio selftest driver.
The Falcon is a general-purpose microcontroller embedded within
NVIDIA GPUs, presenting a relatively simple DMA programming
interface.
This adds another selftest target for vfio-pci with real DMA
transfers (Rubin Du, Alex Williamson)
- Add allocation assertion helpers to vfio selftests and use them to
avoid variable length arrays and the compiler errors they generate
(Alex Mastro)
- Fix use-after-free hazard where an init path error in MSI support
leaves a stray pointer that can later be reused or double-freed
(Xiang Mei)
- Fix previous refactor of PCI BAR mappings to honor non_mappable_bars
flag, which otherwise generates a warning when trying to pci_iomap()
a 256TiB BAR on ISM devices on s390 (Farhan Ali)
- Add igb vfio selftest driver.
Like nv_falcon, this provides another target for DMA testing with
vfio selftests, but importantly this driver supports both physical
82576 NICs and the emulation model in QEMU.
This therefore enables a vfio selftest vector with no physical
hardware requirements (Josh Hilke, Alex Williamson)
- Mark selftest fixture objects __maybe_unused to accommodate builds
with clang -Wunused-but-set-global (David Matlack)
- Add error recovery for vfio-pci devices on s390x.
This expands devices which expose the existing error eventfd and
introduces a device feature for reporting firmware defined error
state information to the user, allowing recovery through hypervisor
channels (Farhan Ali)
* tag 'vfio-v7.3-rc1' of https://github.com/awilliam/linux-vfio:
vfio/pci: Remove the pcie check for VFIO_PCI_ERR_IRQ_INDEX
vfio-pci/zdev: Add a device feature for error information
s390/pci: Store PCI error information for passthrough devices
PCI/MSI: Enable memory decoding before restoring MSI-X messages
PCI: Fail FLR when config space is inaccessible
PCI: Avoid saving config space state if inaccessible
PCI: Allow per function PCI slots to fix slot reset on s390
PCI: Introduce PCI_SLOT_PLACEHOLDER constant for slot_nr placeholder value
selftests: harness: Mark test fixture objects __maybe_unused
vfio: selftests: Retry on EAGAIN during device reset
vfio: selftests: igb: Add driver for Intel 82576 device
vfio: selftests: Add helpers to re-enable interrupts
vfio/pci: Avoid mapping BARs for devices with non-mappable BARs
vfio/pci: clear vdev->msi_perm after freeing it on init failure
vfio: selftests: Avoid VLAs
vfio: selftests: Add allocation assert helpers
vfio: selftests: Add NVIDIA Falcon driver for DMA testing
vfio: selftests: Allow drivers without send_msi() support
vfio: selftests: Add generic PCI command register helpers
vfio: selftests: Add memcpy chunking to vfio_pci_driver_memcpy()
|
||
|
Linus Torvalds
|
6439079365 |
Probes updates for v7.3:
- probes: Advanced BTF typecasting and variable fetch enhancements
. Typecast support across probe events: Extended BTF typecasting syntax
(e.g., (STRUCT)PARAM->MEMBER) to kprobes, uprobes, and fprobes on
function entry and return.
. Nested typecasts: Added support for chaining and nesting typecasts up
to 3 levels, including casting registers and stack variables.
. Field specifier option: Added (STRUCT,FIELD) syntax to emulate
container_of(), allowing retrieval of parent structures from member
pointers.
. $current variable support: Introduced $current special variable to
access the running task_struct via BTF dereferencing.
. Per-CPU variable access: Added this_cpu_read() and this_cpu_ptr()
fetcharg methods to trace CPU-local data safely.
. Fetcharg bytecode dumper: Added CONFIG_PROBE_EVENTS_DUMP_FETCHARG to
dump the compiled fetcharg bytecode instructions as comments in
dynamic_events.
. Extended symbol name handling: Removed the MAX_COMMON_HEAD_LEN limit
and extended MAX_ARGSTR_LEN to 256 bytes, enabling probing of long
symbols, mangled Rust symbols and complex BTF expressions.
. eprobe variable syntax: Allowed eprobes to reference event fields
directly without requiring a '$' prefix.
. Cleanup unused parameters, redundant codes, duplicate macros and
pointer arithmetic.
. Use a ternary operator for simplifying fetch_type_from_btf_type().
- bootconfig / boottime-trace: Expanded dynamic probe support
. Added boot-time tracing configuration support for event probes
(eprobes), function probes (fprobes), and tracepoint probes
(tprobes).
. ftrace2bootconfig: Allowed comment lines ('#') in dynamic_events file.
- fprobe / kprobe: Optimization, robustness, and cleanups
. fprobe: Simplified fprobe_remove_ips() by reusing graph and ftrace
helpers.
. fprobe: Removed __packed attribute from struct __fprobe_header to avoid
unaligned memory access penalties on RISC architectures.
. kprobe & fprobe: Removed redundant memset() calls in perf event probe
handlers.
. kprobes: Replaced legacy __ASSEMBLY__ with __ASSEMBLER__ in header
files.
- selftests & refactoring:
. Refactored parse_probe_arg() and parse_probe_vars(), and eliminated
recursion in probe argument parsing to protect kernel stack depth.
. Added selftests for BTF typecasts and module probing without module
prefixes.
. Forced LC_ALL=C in ftracetest to prevent test failures on localized
systems.
. Refactored btf_type_skip_modifiers() to remove ignored id parameter.
. Sorted ERRORS list in trace_probe.h alphabetically.
. Fixed typo in fprobe docs, and trace_fprobe function name.
. Renamed FETCH_OP_DATA to FETCH_OP_IMMSTR.
. Made file offset error message probe-agnostic.
-----BEGIN PGP SIGNATURE-----
iQFPBAABCgA5FiEEh7BulGwFlgAOi5DV2/sHvwUrPxsFAmqEbbEbHG1hc2FtaS5o
aXJhbWF0c3VAZ21haWwuY29tAAoJENv7B78FKz8bpXsH/i61CqF8bt3/BNUG5qTV
JP/j/Znl9utOq4+g01AeSt6tJREEp262w/b4ZwdXiu+Q41VYwyGazY93FxtX3rQC
gcYnJcAGghzNUjf7ujI2VXDYa11t+GiYSR3Jv8hc/Xu7rq/ilExLObFwJfdhNZAb
go7mC0x9TgRAyw/k/9ezwukBcXQUsuoBU3+IFvict9BrSVmvMPNFhCyvIi6Ps5Fj
NldKTDAaWiKUOuIBDF1vXXSbHMoec31qNll/Ps4HG8RLpdrSWbW4nTOaazir2bbS
RA6hUlVNwsYn7UN6x/taV2szojyAODDv1r6ULplCVjbsn5M0TcdmLFW8JUimaAIr
wm0=
=6KXI
-----END PGP SIGNATURE-----
Merge tag 'probes-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probes updates from Masami Hiramatsu:
"BTF typecasting and variable fetch enhancements:
- Typecast support across probe events: Extended BTF typecasting
syntax (e.g., (STRUCT)PARAM->MEMBER) to kprobes, uprobes, and
fprobes on function entry and return
- Nested typecasts: Added support for chaining and nesting typecasts
up to 3 levels, including casting registers and stack variables
- Field specifier option: Added (STRUCT,FIELD) syntax to emulate
container_of(), allowing retrieval of parent structures from member
pointers
- $current variable support: Introduced $current special variable to
access the running task_struct via BTF dereferencing
- Per-CPU variable access: Added this_cpu_read() and this_cpu_ptr()
fetcharg methods to trace CPU-local data safely
- Fetcharg bytecode dumper: Added CONFIG_PROBE_EVENTS_DUMP_FETCHARG
to dump the compiled fetcharg bytecode instructions as comments in
dynamic_events
- Extended symbol name handling: Removed the MAX_COMMON_HEAD_LEN
limit and extended MAX_ARGSTR_LEN to 256 bytes, enabling probing of
long symbols, mangled Rust symbols and complex BTF expressions
- eprobe variable syntax: Allowed eprobes to reference event fields
directly without requiring a '$' prefix
- Cleanup unused parameters, redundant codes, duplicate macros and
pointer arithmetic
- Use a ternary operator for simplifying fetch_type_from_btf_type()
Expanded boot time dynamic probe support:
- Add boot-time tracing configuration support for event probes
(eprobes), function probes (fprobes), and tracepoint probes
(tprobes)
- Allow comment lines ('#') in dynamic_events file
Optimization, robustness, and cleanups:
- Simplify fprobe_remove_ips() by reusing graph and ftrace helpers
- Remove __packed attribute from struct __fprobe_header to avoid
unaligned memory access penalties on RISC architectures
- Remove redundant memset() calls in perf event probe handlers
- Replace legacy __ASSEMBLY__ with __ASSEMBLER__ in header files
Selftests & refactoring:
- Refactor parse_probe_arg() and parse_probe_vars(), and eliminate
recursion in probe argument parsing to protect kernel stack depth
- Add selftests for BTF typecasts and module probing without module
prefixes
- Force LC_ALL=C in ftracetest to prevent test failures on localized
systems
- Refactor btf_type_skip_modifiers() to remove ignored id parameter
- Sort ERRORS list in trace_probe.h alphabetically
- Fix typo in fprobe docs, and trace_fprobe function name
- Rename FETCH_OP_DATA to FETCH_OP_IMMSTR
- Make file offset error message probe-agnostic"
* tag 'probes-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (37 commits)
fprobe: Simplify fprobe_remove_ips() by reusing existing helpers
tracing/boot: Add support for eprobe, fprobe, and tprobe events
selftests/ftrace: Force C locale in ftracetest
tracing/probes: Treating longer symbol name on event comparation
docs: trace: fprobe: fix 'thos' spelling
tracing/probes: Fix extra whitespace in trace_probe_kernel.h
tracing/kprobe: Remove redundant memset in kprobe_perf_func()
tracing/fprobe: Remove redundant memset in fentry_perf_func()
tracing/fprobe: Remove redundant snprintf in trace_fprobe_match_command_head()
tracing/probes: Simplify BTF_KIND_PTR case in fetch_type_from_btf_type()
tracing/probes: Cleanup pointer arithmetic in store_trace_entry_data()
tracing/probes: Remove unused parameter from parse_probe_var_retval()
tracing/probes: Remove redundant bounds check in trace_probe_compare_arg_type()
tracing/probes: Remove redundant boolean conversion in trace_probe_has_single_file()
tracing/probes: Remove duplicate MAX_ARRAY_LEN macro definition
selftests/ftrace: Add test case for a symbol in a module without module name
tracing/probes: Eliminate recursion in parse_probe_arg()
tracing/probes: Extend max length of argument string
tracing/probes: Sort ERRORS list in trace_probe.h alphabetically
tracing/probes: Refactor parse_probe_arg()
...
|
||
|
Linus Torvalds
|
920f27122c |
CXL for v7.3
CXL core type2 support: cxl: Support dpa without a mailbox cxl: Support Type2 cxl regs mapping CXL test type2 support: cxl/test: Rework cxl_type2_mem_init() to use cxl_mock_platform_device_add() cxl/test: Add cxl_test accelerator driver cxl/test: Fixup hdm init for auto region to support type2 cxl/test: Propagate -ENOMEM on platform_device_alloc() failures cxl/test: Add hierarchy enumeration support for type2 device cxl/test: Refactor platform device enumerations cxl/test: Add type2 support for mock CFMWS0 cxl/test: Add test for module parameters CXL port error handling support prep patches: cxl: Rename find_cxl_port() to find_cxl_port_by_dport() cxl: Tighten CPER kfifo registration API and symbol visibility acpi/apei/ghes: Use raw_spinlock_t for CXL CPER work locks cxl/ras: Fix cxl_rch_get_aer_severity() wrong severity register cxl/ras: Fix cxl_rch_get_aer_info() out-of-bounds AER register read CXL misc patches: cxl/Documentation: Spell out globbed sysfs attribute names cxl/test: Assign one mock memdev a full-width serial number cxl/core: Format the memdev serial number as unsigned in TP_printk cxl/pmem: Format the nvdimm serial number as unsigned decimal cxl: Use %pe to print error pointers cxl: Deny Features commands on the RAW mailbox path CXL fixes: cxl/region: Use __free(put_device) in find_pos_and_ways() cxl/region: Fix use-after-free in find_pos_and_ways() error path cxl/features: Clamp Get Feature output size to the remaining buffer cxl/features: Reject Set Features output buffer smaller than the header cxl/features: Reject Get Feature count larger than the output buffer cxl/port: Restart port enumeration when a sibling adds the dport first cxl/features: Serialize multi-part Get/Set Feature transfers cxl/pci: Honor -EPROBE_DEFER from component register setup cxl/mbox: Break poison list loop on an empty payload cxl/memdev: Fix firmware upload exact-fit handling cxl/features: bound fwctl command payload to the input buffer cxl/mce: Make the MCE notifier per-region cxl/pci: Remove incorrect mbox.valid check in cxl_pci_type3_init_mailbox() cxl: docs/linux/dax-driver - fix typos cxl: fix mailbox return code description typo cxl/mbox: Clamp mailbox output allocation to the payload size -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE5DAy15EJMCV1R6v9YGjFFmlTOEoFAmqDPQEACgkQYGjFFmlT OEqNBw/+LP25RACa3Jtwb53KtycNi/MzyVBXV311rDaBGzSKUixkO9LYCIV76lI/ 86x+U7+fmXBTmynD8lNwgVUw2P18xguYPe3bfn9qlmC2AZ6zmyeEzRU4p4BRzxTv iE9utK7DLetNRLGMnYIz3ziHLaSaZf0RslvecXF61y+nNhfd5N/pg52Bw1dUdpRi 91m8v0JJ+v+OtEKwCsinV4lck07WRmk+roCFFqcwIdR4GkhKBKiipf+Vv9EoR/k5 zBkhPazWFNKmnvf3VAY+vvo/Nh+wmHOrLqJUi5QYOQDXUGiJgt6/2JDVDBrY+QZL 1I7BN66d4PE7lQnYpZHnu/aSlhcV/QI/4tKRnt1eZ7kIFO0s7QbPo7Fg8+Ql+43m V/qYWPxC6BgQXHBYAcnvJZO6COL1EIG1+sGy+x6kInTn33KPBeit6Ru7c3wxmYFa jXfdrudfN+0fUtjEhrMb2IIxfhNV5O/wLQqlj2c8vXgRmZo9dElyyiIxOC87EnOG sWD2Z+4z9Id4egU6bU5iTdVdT+CW0WkUHAd9gtmYwlr9Ttrqh01CTu7vc0XEKyKS j5YU/3sV2H8KbU5PqVo9GeYRukylESe+w42+7UemBUSzX6OIDaiNNokmDt9L+Cg7 pdBr1qzjasR7XIDXNP9IRdkPKTgqDbSrg/gVIZJe+j7OsUHu0Nw= =6Bd/ -----END PGP SIGNATURE----- Merge tag 'cxl-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl Pull CXL updates from Dave Jiang: "This includes the remaining patches to complete the basic support for CXL type2 (accelerators) drivers by the CXL core. A set of unit testing support to catch regressions for the CXL core type2 exported functions has also been added. The actual CXL type 2 driver support for the AMD Solarflare NIC driver has been picked up by net-dev. A set of preparatory patches has been picked up from the CXL port error handling series in order to reduce the number of patches in that series for review. The rest of that series is getting close to be merged but was not ready for the 7.3 merge window. There are also a number of misc patches and a large number of bug fixes against pre-existing issues flagged by sashiko reviews as contributors post new patches on the mailing list. We will continue to work through the sashiko raised issues as they show up." * tag 'cxl-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl: (35 commits) cxl/Documentation: Spell out globbed sysfs attribute names cxl: Rename find_cxl_port() to find_cxl_port_by_dport() cxl: Tighten CPER kfifo registration API and symbol visibility acpi/apei/ghes: Use raw_spinlock_t for CXL CPER work locks cxl/ras: Fix cxl_rch_get_aer_severity() wrong severity register cxl/ras: Fix cxl_rch_get_aer_info() out-of-bounds AER register read cxl/test: Assign one mock memdev a full-width serial number cxl/core: Format the memdev serial number as unsigned in TP_printk cxl/pmem: Format the nvdimm serial number as unsigned decimal cxl: Use %pe to print error pointers cxl/region: Use __free(put_device) in find_pos_and_ways() cxl/region: Fix use-after-free in find_pos_and_ways() error path cxl: Deny Features commands on the RAW mailbox path cxl/features: Clamp Get Feature output size to the remaining buffer cxl/features: Reject Set Features output buffer smaller than the header cxl/features: Reject Get Feature count larger than the output buffer cxl/port: Restart port enumeration when a sibling adds the dport first cxl/features: Serialize multi-part Get/Set Feature transfers cxl/pci: Honor -EPROBE_DEFER from component register setup cxl/mbox: Break poison list loop on an empty payload ... |
||
|
Linus Torvalds
|
caf325ab81 |
LoongArch changes for v7.3
1, Add DIRECT_MAP_PHYSMEM_END definition; 2, Expand module virtual address space to 2GB; 3, Use current_stack_pointer in current_pt_regs(); 4, BPF JIT enhancements such as kptr_xchg and timed may_goto; 5, Some bug fixes and other small changes. -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEzOlt8mkP+tbeiYy5AoYrw/LiJnoFAmqDGUUWHGNoZW5odWFj YWlAa2VybmVsLm9yZwAKCRAChivD8uImeiE5D/0XYl8xAsOegm2dNuM+kKfqXAV4 FcbaoB7GuYHWG7lFkVTITwBe8A30BInADrwZQPxv7wb7aTQusTwNjAfq1pX1MOxG ET1Fady7dEokCB9VAS/FP24lbF5nDYLVs0kEcx+xvAwQpW750Rk+aWcyCZeX5xgV 3KrlnYVXDvDYY6HDeuL9pXkKhyRe4uqnPLh1loOhK0HC/NhLCu+tfyLH3pQl/ZCf QuNnw93fSTJPvZD2HcTb81tG4ohdj5GXM9SuckfIvNiZoRtc5pMnVE6we1N5yQKY E4EwB9fqQ74piMbM2RjLPi5bjgzzdJSGamdEZ4QUau4HjFXZsDiNEfWRmN2Z3qQo +zsLzZq43yHsCUsaobWmtmo0Q6YF4pjtyff904YYrPIKH+96dyGsvjbA+n46H7pL Eg+HNdOH0t6dU706y0zbR0t1Za4PiM9dZtV3BZT3B8MLMEy7dsVYoBUt+7Kc+eYB lq5SlWaFYyOSnC1WL8/uzzrH6adF/62DruHy1ovlWOE6bhPc+uQucXHOyNxyf86h xIlOB0hRCO18sYql6WuxpQO9bKP0LCQv5JoeCqjXsKTQgiG3kFAx9bpRmTHt4CqH 3LWiBRRVzLvScZ0qqerGXXylXXkdN3uagtpSXM+f/bXbWje3cROSyWK4rktwLsPN ugAIATgZ8+/B45X56w== =h0m2 -----END PGP SIGNATURE----- Merge tag 'loongarch-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson Pull LoongArch updates from Huacai Chen: - Add DIRECT_MAP_PHYSMEM_END definition - Expand module virtual address space to 2GB - Use current_stack_pointer in current_pt_regs() - BPF JIT enhancements such as kptr_xchg and timed may_goto - Some bug fixes and other small changes * tag 'loongarch-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: selftests/bpf: Enable kptr_xchg_inline test on LoongArch LoongArch: BPF: Add arch_bpf_stack_walk() implementation LoongArch: BPF: Add timed may_goto implementation LoongArch: BPF: Resolve per-CPU addrs for internal-only MOV LoongArch: BPF: Advertise JIT support for kptr xchg inline LoongArch: BPF: Align value-returning atomics with LKMM LoongArch: BPF: Split unconditional branch JA paths statically LoongArch: BPF: Remove dead move_imm() call in BPF_NEG path LoongArch: BPF: Remove redundant zext jumping in move_imm() LoongArch: BPF: Implement branchless conditional move for TCC LoongArch: BPF: Refactor jump offset calculation in tail call LoongArch: BPF: Move arena register slot below TCC context LoongArch: BPF: Optimize redundant TCC loads in epilogue LoongArch: Use current_stack_pointer in current_pt_regs() LoongArch: Use generic cmp_int() instead of custom cmp_3way() LoongArch: Expand module virtual address space to 2GB LoongArch: Add DIRECT_MAP_PHYSMEM_END definition LoongArch: Fix acpi_package_ids[] array overflow |
||
|
Linus Torvalds
|
55ab7e1422 |
for-7.3/block-20260819
-----BEGIN PGP SIGNATURE-----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=G1l4
-----END PGP SIGNATURE-----
Merge tag 'for-7.3/block-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull block updates from Jens Axboe:
- NVMe updates via Keith:
- Enable Clang context analysis for the nvme host driver, adding
context annotations across core, fabrics, rdma, tcp and pci
- nvmet reservation state exposed through a new namespace-level
debugfs directory, plus ABI documentation for the host sysfs and
target configfs interfaces
- nvme-tcp host memory disclosure fixes on the read path: reject a
read that transferred too few bytes, don't accept C2HData based
on blk_rq_payload_bytes() alone, and fix the R2T case for a read
command
- Parallelize nvme-rdma I/O queue allocation and startup (Surabhi)
- Apple nvme fixes and quirks: page aligned admin queue buffers,
destroy the admin queue on removal, and various DMA/NVMMU
correctness fixes
- A large pile of nvmet and host fixes for out-of-bounds reads,
refcount/resource leaks, and NULL derefs across auth, zns,
passthru, pci-epf, rdma and configfs
- Various other fixes and cleanups
- MD updates via Yu Kuai:
- llbitmap reshape support, the large series wiring exact bitmap
mapping and reshape lifecycle through raid5 and raid10, growing
the page cache in place, and remapping checkpointed bits as
reshape progresses
- raid5 fixes for lockless max_nr_stripes and recovery_offset
accesses, a reshape deadlock with more failed devices than max
degraded, and bitmap batch counter consistency
- Atomic write handling for raid1/raid10, and removal of the
REQ_NOWAIT support from raid1/10/456
- raid5-ppl use-after-free fix in ppl_do_flush()
- A batch of smaller fixes across md core and the bitmap code
- s390/dasd ESE full-track write support and the surrounding
infrastructure, plus enabling CONTEXT_ANALYSIS for s390/block
- RWF_DONTCACHE support for block devices, built on new task-context
bio completion infrastructure, and wiring it up for the iomap and
buffer dropbehind writeback paths
- Async io_uring zone reset all, plus zone management command cleanups
allowing REQ_NOWAIT and tightening conventional zone rejection
- Block integrity refactoring: lift BIP_CHECK_FLAGS to the shared
header, handle nogenerate/noverify properly in fs-integrity, and drop
the blk-integrity.h include from bdev.c
- Split out a new blk_plug.h header
- ublk improvements: add UBLK_F_IO_DESC_SIZE, split request validation
from io_desc init, reject non-power-of-2 zone sizes in SET_PARAMS,
and a series of hardening fixes around map/unmap and auto buf reg
- null_blk cleanups and configfs serialization fixes
- nbd queue freeze removal on the setup paths, and a new
pre_defined_connections module parameter for pre-created devices
- blk-cgroup fixes for the race between policy activation and blkg
destruction, and accounting per-cpu stats over possible CPUs across
blk-stat, iolatency, iocost and kyber
- Various dio fixes: leak on metadata mapping error, validate user
space vectors during extraction, and set dma_alignment from the
backing file for loop and zloop direct I/O
- bio cleanups
- Various other fixes and cleanups all over
* tag 'for-7.3/block-20260819' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux: (241 commits)
nbd: add pre_defined_connections module parameter for pre-created devices
nbd: remove queue freeze for newly created nbd from netlink path
nbd: factor out a nbd_genl_foreach_sock
nbd: skip queue freeze when setting size at device startup
nbd: remove queue freeze in nbd_add_socket
nbd: clear queue limits on disconnect
nbd: disallow NBD_SET_SOCK on an active device
nbd: simplify find_fallback() by removing redundant logic
blk-mq: add missing call to srcu_barrier() in blk_mq_free_tag_set()
block: mtip32xx: synchronize ioctls with device removal
ublk: avoid teardown retry loop on xarray allocation failure
null_blk: fix UBSAN shift-out-of-bounds when zone_size is 0 or overflows
block: don't include blk-integrity.h in bdev.c
xfs: avoid double deferrals for RWF_DONTCACHE writes
loop: Fix recently introduced lock inversion
block: set QUEUE_FLAG_DYING unconditionally in blk_mark_disk_dead()
swim3: Add missing MODULE_DESCRIPTION
selftests: ublk: add SET_PARAMS validation test
selftests: ublk: add helper for SET_PARAMS
ublk: reject non-power-of-2 zone sizes in SET_PARAMS
...
|
||
|
Linus Torvalds
|
d141ec2825 |
NFSD 7.3 Release Notes
Jeff Layton contributed CB_NOTIFY support to NFSD's NFSv4.1
directory delegations. The server used to recall a delegation as
soon as the directory changed. NFSD now watches delegated
directories through fsnotify and reports adds, removes, renames,
and directory attribute changes, carrying the filehandle and
attributes of the affected entry, so clients can keep their
caches. Some of the NOTIFY4 flags come from RFC 8881bis.
Jeff Layton also continued the netlink work that started in v7.2.
A new server-stats-get operation reports what /proc/net/rpc/nfsd
publishes, plus NFSv4 callback counts, and SUNRPC now keeps its
per-procedure call counts per network namespace, so a container
sees its own numbers. nfsstat reads all of this over netlink, with
a procfs fallback for older kernels.
SUNRPC's service thread pool mode selection is gone. Pernode is
the right choice on any host we run today, so the auto, global,
and percpu modes have been removed. A single-node host still gets
one pool. A multi-NUMA host now gets a pool per node.
sunrpc.pool_mode accepts the old names but no longer selects
anything.
The rest is bug fixes, clean-ups, and small optimizations: an
async COPY offload rework from Jeff Layton, more use-after-free
fixes in the NFSv4 state revocation paths, percpu counter
contention removed from the reply cache and IO accounting, and a
long list of hardening fixes from Chris Mason. Sincere thanks to
all contributors, reviewers, testers, and bug reporters who
participated in the v7.3 NFSD development cycle.
-----BEGIN PGP SIGNATURE-----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=g1IS
-----END PGP SIGNATURE-----
Merge tag 'nfsd-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd updates from Chuck Lever:
- CB_NOTIFY support for NFSD's NFSv4.1 directory delegations
The server used to recall a delegation as soon as the directory
changed. NFSD now watches delegated directories through fsnotify and
reports adds, removes, renames, and directory attribute changes,
carrying the filehandle and attributes of the affected entry, so
clients can keep their caches. Some of the NOTIFY4 flags come from
RFC 8881bis (Jeff Layton)
- Continued netlink work
A new server-stats-get operation reports what /proc/net/rpc/nfsd
publishes, plus NFSv4 callback counts, and SUNRPC now keeps its
per-procedure call counts per network namespace, so a container sees
its own numbers. nfsstat reads all of this over netlink, with a
procfs fallback for older kernels (Jeff Layton)
- Remove SUNRPC service thread pool mode selection
Per node is the right choice on any host we run today, so the auto,
global, and percpu modes have been removed. A single-node host still
gets one pool. A multi-NUMA host now gets a pool per node.
sunrpc.pool_mode accepts the old names but no longer selects
anything.
- Bug fixes, clean-ups, and small optimizations:
- async COPY offload rework (Jeff Layton)
- more use-after-free fixes in the NFSv4 state revocation paths
- percpu counter contention removed from the reply cache and IO
accounting
- a long list of hardening fixes (Chris Mason)
Sincere thanks to all contributors, reviewers, testers, and bug
reporters who participated in the v7.3 NFSD development cycle.
* tag 'nfsd-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux: (182 commits)
nfsd: export NFSv4 callback op stats via netlink
nfsd: count NFSv4 callback operations per netns
sunrpc: remove unused svc_version vs_count field
nfsd: implement server-stats-get netlink handler
sunrpc: use per-net counts in svc_seq_show()
sunrpc: add per-netns per-procedure call counts to svc_stat
NFSD: Document reply_cache_stats ABI
NFSD: Eliminate percpu counter contention in IO byte accounting
NFSD: Eliminate percpu counter contention in reply cache statistics
NFSD: Eliminate percpu counter contention in DRC memory accounting
NFSD: Fix off-by-one in DRC bucket pruning limit
NFSD: Relocate NFSv4 "supported attributes" to new header
NFSD: Relocate nfsd4_set_netaddr()
NFSD: Relocate nfsd_user_namespace()
NFSD: Move struct readdir_cd
NFSD: Move the export.h include from nfsd.h to auth.c
NFSD: Remove '#include "nfsd.h"' from fs/nfsd/cache.h
NFSD: include "netns.h"
NFSD: Explicitly include "stats.h"
NFSD: Make "stats.h" self-contained
...
|
||
|
Linus Torvalds
|
62abb6cffd |
NVDIMM and DAX for v7.3
Documentation cleanup: nvdimm-btt: clean up kernel-doc warnings libnvdimm: nd.h: clean up kernel-doc warnings DAX prepare for FAMFS: dax: fsdev.c minor formatting cleanup dax: fix holder_ops race in fs_put_dax() dax: read holder_ops once in dax_holder_notify_failure() dax/fsdev: fail probe on invalid pgmap offset dax/fsdev: use __va(phys) for kaddr in direct_access dax/fsdev: clear pgmap ops and owner on unbind dax/fsdev: don't leave a dangling dev_dax->pgmap on probe failure dax/fsdev: clear vmemmap_shift when binding static pgmap dax/fsdev: fix multi-range offset in memory_failure handler dax: fix misleading comment about share/index union in dax_folio_reset_order() NVDIMM misc fixups: nvdimm/btt: reject an arena whose nfree is below the lane count libnvdimm/labels: Bound the on-media label size before the shift libnvdimm/labels: Prevent integer overflow in __nd_label_validate() Coccinelle reported cleanups: nvdimm: ndtest: remove redundant NULL check before vfree() nvdimm: nfit: remove redundant NULL check before vfree() -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQR/ATNjDEocsE1wudD5tRoRP7nxxwUCaoOJMQAKCRD5tRoRP7nx x6FQAQCmAfXFZK5eE+nujrFanI5d2iiKcTefwR/LYu0HOVG82AEA/c39OZz4jhSj bx49jE45o7qTaZHzY8ADSBVl8GHSOQA= =0lJA -----END PGP SIGNATURE----- Merge tag 'libnvdimm-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull NVDIMM and DAX updates from Alison Schofield: "Most are DAX preparatory patches for FAMFS support, along with a few NVDIMM fixes and documentation cleanups. - Documentation cleanup, removing kernel-doc warnings - preparing DAX for FAMFS - misc NVDIMM fixups with cleanups for issues reported by Coccinelle" * tag 'libnvdimm-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: nvdimm-btt: clean up kernel-doc warnings libnvdimm: nd.h: clean up kernel-doc warnings dax: fsdev.c minor formatting cleanup dax: fix holder_ops race in fs_put_dax() dax: read holder_ops once in dax_holder_notify_failure() dax/fsdev: fail probe on invalid pgmap offset dax/fsdev: use __va(phys) for kaddr in direct_access dax/fsdev: clear pgmap ops and owner on unbind dax/fsdev: don't leave a dangling dev_dax->pgmap on probe failure dax/fsdev: clear vmemmap_shift when binding static pgmap dax/fsdev: fix multi-range offset in memory_failure handler dax: fix misleading comment about share/index union in dax_folio_reset_order() nvdimm/btt: reject an arena whose nfree is below the lane count libnvdimm/labels: Bound the on-media label size before the shift libnvdimm/labels: Prevent integer overflow in __nd_label_validate() nvdimm: ndtest: remove redundant NULL check before vfree() nvdimm: nfit: remove redundant NULL check before vfree() |
||
|
Linus Torvalds
|
ae814200e8 |
bitmap updates for v7.3
- bitmap_find_next_zero_area_off() optimization (Sunyi);
- bitmap_find_next_zero_area_off(): return size when no zero area is
found (Yury);
- bitmap vs IDA vs Maple Tree performance test (Yury);
- get rid of cpumap_print_to_pagebuf() (Yury);
- use nr_node_ids in __nodemask_pr_numnodes() (Li RongQing);
- bitops: make the *_bit_le functions use unsigned long (Benjamin);
- bitmap scatter & gather test fix (Christophe);
- use __ASSEMBLER__ in bitmap header files (Thomas);
-----BEGIN PGP SIGNATURE-----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=q8Lf
-----END PGP SIGNATURE-----
Merge tag 'bitmap-for-7.3' of https://github.com/norov/linux
Pull bitmap updates from Yury Norov:
"The usual set of fixes, cleanups and performance improvements together
with a couple of new tests:
- bitmap_find_next_zero_area_off() optimization (Sunyi)
- bitmap_find_next_zero_area_off(): return size when no zero area is
found (Yury)
- bitmap vs IDA vs Maple Tree performance test (Yury)
- get rid of cpumap_print_to_pagebuf() (Yury)
- use nr_node_ids in __nodemask_pr_numnodes() (Li RongQing)
- bitops: make the *_bit_le functions use unsigned long (Benjamin)
- bitmap scatter & gather test fix (Christophe)
- use __ASSEMBLER__ in bitmap header files (Thomas)"
* tag 'bitmap-for-7.3' of https://github.com/norov/linux: (25 commits)
lib: test bitmap vs IDA vs Maple Tree performance for region allocations
bitmap: Return size when no zero area is found
media: s5p-mfc: Treat bitmap size as allocation failure
crypto: ccp: Treat bitmap size as allocation failure
powerpc/msi: Treat bitmap size as allocation failure
ARM: dma-mapping: Treat bitmap size as allocation failure
bitmap: drop bitmap_next_set_region()
nodemask: reduce bitmap width to nr_node_ids in __nodemask_pr_numnodes()
bitmap: Properly initialise destination bitmap for scatter & gather test
lib/bitmap-str: get rid of cpumap_print_to_pagebuf()
perf: Use sysfs_emit() for cpumask show callbacks
PCI/sysfs: Use sysfs_emit() for cpumask show callbacks
RDMA/hfi1: Use sysfs_emit() for cpumask show helper
hwtracing: hisi_ptt: Use sysfs_emit() for cpumask show
fpga: dfl-fme-perf: Use sysfs_emit() for cpumask show
devfreq: Use sysfs_emit() for cpumask show callbacks
cpu: Use sysfs_emit() for cpumask show callback
x86/events: Use sysfs_emit() for cpumask show callbacks
powerpc: Use sysfs_emit() for cpumask show callbacks
arm: Use sysfs_emit() for cpumask show callbacks
...
|
||
|
Linus Torvalds
|
11260c335e |
sched_ext: Changes for v7.3
This depends on the arena argument support in the BPF tree and should be
pulled after the scheduler core and BPF pulls. The patches based on bpf-next
were kept on a separate branch which was merged into for-7.3 just now. The
same merged result was in linux-next for several days.
Most of this cycle completes the enqueue-path support for hierarchical
sub-scheduling, which makes sub-scheduler support feature complete: a root
BPF scheduler can now hand a cgroup subtree over to a nested sub-scheduler
together with revocable CPU grants, and the sub-scheduler owns all
scheduling decisions for its tasks on those CPUs.
Development volume was high and a number of changes plugging holes in the
new support landed late in the cycle. Also included are core scheduling
fixes that were completed too late for the v7.2 release and are routed
through this pull request.
- Sub-scheduler CPU delegation:
- Parent schedulers now grant and revoke per-CPU capabilities (enqueueing,
preemption, CPU frequency control) on their children, enforced on every
path a scheduler can reach a CPU through. Previously only dispatching
could be delegated; this lets sub-schedulers fully schedule their CPUs.
- Rescue execution: a task whose scheduler doesn't have access to the CPUs
the task needs to run on starved until the watchdog ejected the whole
scheduler. The kernel now runs such tasks directly on a small bandwidth
budget, turning a scheduler-killing failure into bounded degradation.
- Cgroup integration: tasks migrating across a sub-scheduler boundary
weren't re-homed to the new owner, causing wrong-scheduler scheduling
and a use-after-free. Sub-schedulers now take over their cgroup subtree
and receive its cgroup callbacks.
- Arena objects now cross the kernel/BPF boundary as typed pointer
arguments, translated transparently by the BPF tree's new arena argument
support, replacing untyped arguments with manual translation.
- scx_qmap now demonstrates full hierarchical sub-scheduling.
- Robustness improvements: the abort path is now NMI-safe, fixing deadlocks
when errors are raised from NMI context and making hardlockup recovery
direct. Reenqueue loops that could monopolize a CPU ahead of the watchdog
now eject the offending scheduler, and stalls are blamed on the scheduler
actually responsible.
- Hardening: BPF-writable arena memory is validated before kernel use, and
task slice and vtime writes got explicit synchronization rules, closing
corruption vectors open to buggy or malicious schedulers.
- Core scheduling: sched_ext dispatching can drop the rq lock inside the
core-wide pick, which let interleaving selections corrupt each other's
state and hard-hang the machine. The selection now restarts when the lock
was released. The task ordering callback was also invoked with its
arguments swapped, and the default ordering is updated to work across
sub-scheduler boundaries. The fixes are marked for stable.
- Other fixes headed for stable: a task init leak on fork failure during
enable, tooling compat macros that silently failed to detect newer
kernels, and a crash on reenqueueing against a destroyed dispatch queue.
- Tooling: scx_pair moves off deprecated callbacks, and the deprecated
scx_bpf_cpu_rq() kfunc is removed.
-----BEGIN PGP SIGNATURE-----
iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaoOA7w4cdGpAa2VybmVs
Lm9yZwAKCRCxYfJx3gVYGQWqAP9Sy8GwS7dRdGze/eHwYlDBt5U9ayd2ntR0Z+H1
1Hd23AEA5kYPaEN68OgCXh/XqmFljkvEgEisXtMtw8XsZA+pHQA=
=OwIm
-----END PGP SIGNATURE-----
Merge tag 'sched_ext-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext updates from Tejun Heo:
"Most of this cycle completes the enqueue-path support for hierarchical
sub-scheduling, which makes sub-scheduler support feature complete: a
root BPF scheduler can now hand a cgroup subtree over to a nested
sub-scheduler together with revocable CPU grants, and the
sub-scheduler owns all scheduling decisions for its tasks on those
CPUs.
Development volume was high and a number of changes plugging holes in
the new support landed late in the cycle. Also included are core
scheduling fixes that were completed too late for the v7.2 release and
are routed through this pull request.
Sub-scheduler CPU delegation:
- Parent schedulers now grant and revoke per-CPU capabilities
(enqueueing, preemption, CPU frequency control) on their children,
enforced on every path a scheduler can reach a CPU through.
Previously only dispatching could be delegated; this lets
sub-schedulers fully schedule their CPUs.
- Rescue execution: a task whose scheduler doesn't have access to the
CPUs the task needs to run on starved until the watchdog ejected
the whole scheduler. The kernel now runs such tasks directly on a
small bandwidth budget, turning a scheduler-killing failure into
bounded degradation.
- Cgroup integration: tasks migrating across a sub-scheduler boundary
weren't re-homed to the new owner, causing wrong-scheduler
scheduling and a use-after-free. Sub-schedulers now take over their
cgroup subtree and receive its cgroup callbacks.
- Arena objects now cross the kernel/BPF boundary as typed pointer
arguments, translated transparently by the BPF tree's new arena
argument support, replacing untyped arguments with manual
translation.
- scx_qmap now demonstrates full hierarchical sub-scheduling.
Other fixes and updates:
- Robustness improvements: the abort path is now NMI-safe, fixing
deadlocks when errors are raised from NMI context and making
hardlockup recovery direct. Reenqueue loops that could monopolize a
CPU ahead of the watchdog now eject the offending scheduler, and
stalls are blamed on the scheduler actually responsible.
- Hardening: BPF-writable arena memory is validated before kernel
use, and task slice and vtime writes got explicit synchronization
rules, closing corruption vectors open to buggy or malicious
schedulers.
- Core scheduling: sched_ext dispatching can drop the rq lock inside
the core-wide pick, which let interleaving selections corrupt each
other's state and hard-hang the machine. The selection now restarts
when the lock was released. The task ordering callback was also
invoked with its arguments swapped, and the default ordering is
updated to work across sub-scheduler boundaries. The fixes are
marked for stable.
- Other fixes headed for stable: a task init leak on fork failure
during enable, tooling compat macros that silently failed to detect
newer kernels, and a crash on reenqueueing against a destroyed
dispatch queue.
- Tooling: scx_pair moves off deprecated callbacks, and the
deprecated scx_bpf_cpu_rq() kfunc is removed"
* tag 'sched_ext-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext: (144 commits)
sched_ext: Drop the dead SCX_DEQ_CORE_SCHED_EXEC test in dequeue_task_scx()
sched_ext: Make core-sched task ordering hierarchy-aware
sched_ext: Use runnable_at for the default core-sched task ordering
sched_ext: Fix inverted ops.core_sched_before() invocation
sched_ext: Move the config-off sub-cap kfunc stubs into sub.c
sched_ext: Rename balance-era identifiers to dispatch terms
sched_ext: Drop the stale keep_prev fixup in dispatch_pick()
sched_ext: Keep kick_sync waiting on the rq's own CPU
sched_ext: Make SCHED_CLASS_EXT select GENERIC_ALLOCATOR
sched_ext/scx_flatcg: Fix cvtime true-up on slice expiry
sched_ext: Don't BUG_ON a destroyed DSQ in process_deferred_reenq_users
sched_ext: Fix scx_bpf_dsq_move_to_local___v2 compat detection
sched_ext: Make scx_bpf_events() read the calling scheduler's counters
sched_ext: Drop unlocked scx_rq_clock_invalidate() from scx_root_disable()
selftests/sched_ext: Fix flaky ddsp failure tests on busy systems
selftests/sched_ext: Make numa idle validation race-free
sched_ext: Fix scx_bpf_dsq_reenq___compat kfunc extern prototype
sched_ext/scx_flatcg: expire cached hweights on weight changes
sched_ext: Fix exit_task leak on fork failure during enable
sched_ext: fix stale references in doc comments
...
|
||
|
Linus Torvalds
|
40d8c81577 |
cgroup: Changes for v7.3
- cpuset:
- Attach path bug fixes: migrations spanning multiple source or
destination cpusets were mishandled, most visibly leaving thread
affinities stale when the controller is disabled in a threaded subtree.
Configuration writes could also race an in-flight attach and apply stale
state, and the deadline task count could get corrupted by concurrent
updates, skewing SCHED_DEADLINE admission decisions.
- Memory binding bug fixes: which node masks get applied differed between
the binding update paths, and tasks cloned with CLONE_INTO_CGROUP
skipped rebinding entirely. Rebinding also now runs once per process
instead of repeating for every thread sharing the mm.
- Overhead removals with no behavior change: CPU hotplug iterated tasks of
cpusets that just inherit the parent's effective masks, and the
slab-spreading task flag was still being maintained although the SLAB
allocator that consumed it is long gone.
- Data-race annotations for benign races so that KCSAN reports stay
meaningful, selftest coverage for the fixes above along with flakiness and
portability fixes, and documentation corrections.
-----BEGIN PGP SIGNATURE-----
iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaoNzqw4cdGpAa2VybmVs
Lm9yZwAKCRCxYfJx3gVYGRxVAQDK5MAK0wUhxkG2bO7eSp0F74J/uAMXTSQdcXR+
LR3wnQD/aYTHVPXecNc2XqU10uaVqPctHTuCt2qb4J7w8brHPQ8=
=9TyI
-----END PGP SIGNATURE-----
Merge tag 'cgroup-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
- Attach path bug fixes: migrations spanning multiple source or
destination cpusets were mishandled, most visibly leaving thread
affinities stale when the controller is disabled in a threaded
subtree. Configuration writes could also race an in-flight attach and
apply stale state, and the deadline task count could get corrupted by
concurrent updates, skewing SCHED_DEADLINE admission decisions.
- Memory binding bug fixes: which node masks get applied differed
between the binding update paths, and tasks cloned with
CLONE_INTO_CGROUP skipped rebinding entirely. Rebinding also now runs
once per process instead of repeating for every thread sharing the
mm.
- Overhead removals with no behavior change: CPU hotplug iterated tasks
of cpusets that just inherit the parent's effective masks, and the
slab-spreading task flag was still being maintained although the SLAB
allocator that consumed it is long gone.
- Data-race annotations for benign races so that KCSAN reports stay
meaningful, selftest coverage for the fixes above along with
flakiness and portability fixes, and documentation corrections.
* tag 'cgroup-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup: (34 commits)
selftests/cgroup: Remove redundant chown in test_cgcore_lesser_ns_open
selftests/cgroup: Preserve CPU hotplug write errors
cgroup/cpuset: Add test for partition root invalidation returning wrong CPUs
cgroup/cpuset: Remove obsolete PFA_SPREAD_SLAB task flag
docs: cgroup-v2: fix stale "io" controller introduction
selftests/cgroup: Avoid awk -e in cpuset tests
cgroup/cpuset: Use WRITE_ONCE() for shared prs_err updates
selftests/cgroup: add user_usec sanity check in test_cpucg_nice
cgroup: drop unneeded semicolon
docs: cgroup-v2: mark memory.pressure and io.pressure as read-write
selftests/cgroup: Fix minor defects in test_cpuset
Docs/admin-guide/cgroup-v2: fix delay_nsec unit in io.latency doc
selftests/cgroup: Remove redundant cg_enter_current() call in test_core
selftests/cgroup: Add test for cpuset affinity on controller disable
cgroup/cpuset: Handle the special case of non-moving tasks in cpuset_can_attach()
cgroup/cpuset: Support multiple destination cpusets for cpuset_*attach()
selftests/cgroup: fix missing TAP output in test_hugetlb_memcg
cgroup/cpuset: Support multiple source cpusets for cpuset_*attach()
cgroup/cpuset: Move mpol_rebind_mm/cpuset_migrate_mm() calls inside cpuset_attach_task()
cgroup/cpuset: Make attach_ctx.old_cs track task group leader
...
|
||
|
Linus Torvalds
|
39e34e88ec |
workqueue: Changes for v7.3
- Worker wakeups moved out of pool->lock on the hot paths, shortening lock hold times. The wakeup can be expensive on arm64 due to the idle wakeup IPI, and the change improves the workqueue microbenchmark there by up to 10%. - Stall diagnostics now report pools stuck with no running worker, with a backtrace of what the CPU is executing and the likely culprit worker, instead of dumping every in-flight worker. - Preparation for turning per-cpu workqueues into an affinity scope of unbound workqueues instead of a separate backend. - Race annotations for KCSAN and sparse warnings, and doc and monitoring script fixes. -----BEGIN PGP SIGNATURE----- iIQEABYKACwWIQTfIjM1kS57o3GsC/uxYfJx3gVYGQUCaoNxSg4cdGpAa2VybmVs Lm9yZwAKCRCxYfJx3gVYGWDfAP4tp2XFrNOOai4aCcWivKV99Arb0YFdjozM4vjX rx3HCwEAiwfLTduv+ZeLHYTIm3V3Nxrf246fitSEYUknb+Cx8QE= =XrZO -----END PGP SIGNATURE----- Merge tag 'wq-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq Pull workqueue updates from Tejun Heo: - Worker wakeups moved out of pool->lock on the hot paths, shortening lock hold times. The wakeup can be expensive on arm64 due to the idle wakeup IPI, and the change improves the workqueue microbenchmark there by up to 10% - Stall diagnostics now report pools stuck with no running worker, with a backtrace of what the CPU is executing and the likely culprit worker, instead of dumping every in-flight worker - Preparation for turning per-cpu workqueues into an affinity scope of unbound workqueues instead of a separate backend - Race annotations for KCSAN and sparse warnings, and doc and monitoring script fixes * tag 'wq-for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (23 commits) workqueue: annotate racy p->wake_cpu accesses in kick_pool_pick() workqueue: BUG_ON() instead of returning NULL in wq_node_nr_active() workqueue: use RCU accessors when populating wq->cpu_pwq workqueue: use rcu_dereference_sched() in workqueue_congested() workqueue: skip the node_nr_active update for non-unbound workqueues workqueue: rename alloc_unbound_pwq() to alloc_pwq() workqueue: allocate attrs for all workqueues workqueue: rename wq->unbound_attrs to wq->attrs workqueue: test WQ_UNBOUND explicitly in the hotplug loops workqueue: account nr_active by the backing pool workqueue: release pwq pools by pool type workqueue: factor out alloc_and_link_percpu_pwqs() workqueue: factor out get_percpu_pool() docs: workqueue: Fix bracket workqueue: annotate racy sum_exec_runtime reads for CPU-intensive detection workqueue: annotate racy PWQ_STAT_CPU_TIME update in wq_worker_tick() workqueue: dump the last woken worker for stalled pools workqueue: trigger a single-CPU backtrace for stalled pools workqueue: only show running workers in stall diagnostics workqueue: defer the worker wakeup outside pool->lock in process_one_work() ... |
||
|
Linus Torvalds
|
72fdff1416 |
It has been a not-too-busy cycle for docs; here's the highlights:
- A (hopefully) consensus change to our LLM-attribution requirements,
removing the specific model name from the Assisted-by tag.
- A couple of new realtime documents
- Various docs-build-system fixes
- Ongoing work with the Chinese, Portuguese, and Japanese translations.
...and lots of typo fixes, grammar tweaks, etc.
-----BEGIN PGP SIGNATURE-----
iQFDBAABCgAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmqDI84PHGNvcmJldEBs
d24ubmV0AAoJEBdDWhNsDH5Yc2IH/Rq89biNmBQjQ+QX5hC0hZAUv8KyGeYiK6zx
W6xoU62lYWx7IR4ZbOP5Z/+EVZALV3MDY4Tfd1JYcu+8+T6qNcTIbgCm5+R+AQrb
BpD5eK/MovpWoErePJEK9/QbF2EjUkVmsDnPleJr6xvH11+RQH6TtctfY6ORFDTJ
wc2rXEIuR3GBLMk8UAvDhRfJcvIuwESiV5JAQAhZ6lq9NW7ZVUHTy/XUs+MEHpuW
xCwjAAw55maozO1uHzGGSRT03X4VJ/bug2MVBRN0AuRBvA/w0n3mg5DdqJt5r/+q
bYEay3V4PRXAkxdo0vZHHhcpIBqMSWlmHLJtEIdzbxT4wkf2v6A=
=7NXc
-----END PGP SIGNATURE-----
Merge tag 'docs-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux
Pull documentation updates from Jonathan Corbet:
"It has been a not-too-busy cycle for docs; here's the highlights:
- A (hopefully) consensus change to our LLM-attribution requirements,
removing the specific model name from the Assisted-by tag
- A couple of new realtime documents
- Various docs-build-system fixes
- Ongoing work with the Chinese, Portuguese, and Japanese
translations
...and lots of typo fixes, grammar tweaks, etc"
* tag 'docs-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/docs/linux: (85 commits)
Doc: admin-guide: pm: Remove unnecessary backticks and fix a spell
Documentation: Extend the real-time hardware bits with some firmware bits
docs: pt_BR: Reorganize process/index.rst to follow english structure
docs: conf.py: fix the 'utf-8' typo
doc tools: fix 'path' typos
Documentation: real-time: Add kernel configuration guide
docs: python: abi_regex: convert adjacent index placeholders
docs: python: abi_regex: catch the right exception for a bad regex
docs: sphinx-build-wrapper: include localversion in kernel version string
Documentation: html: adjust sidebar section titles styling
Documentation: html: show sections in the sidebar
checkpatch.pl: adapt to new Assisted-by: format
MAINTAINERS: update Traditional Chinese documentation maintainers
docs: pt_BR: process: Translate CVE documentation
docs: pt_BR: translate the management-style.rst to Brazilian Portuguese
docs: xforms_lists: support DEFINE_IDTENTRY_IRQ()
coding-assistants: simplify attribution
docs: translations: pt_BR: translate email-clients.rst
docs: pt_BR: process: Translate the security-bugs.rst
doc:it_IT: align doc-guide translation
...
|
||
|
Linus Torvalds
|
9d2ed026f0 |
Summary
* Documentation
Fix kernel-doc warnings by adjusting in file documentation.
* Consolidate do_proc_* function into do_proc_vec.
Consolidate three slightly different implementations of applying a converter
on all elements of a vector. Fixes to this function now propagate to the three
types.
* Miscellaneous
Replaced CONFIG_PROC_SYSCTL with CONFIG_SYSCTL (they were the same) and
restrict cad_pid modifications to global root (GLOBAL_ROOT_UID)
* Testing
This series was run through sysctl selftests/kunit test suite in x86_64. And
went into linux-next around rc2, giving it a bit more than a month of testing.
-----BEGIN PGP SIGNATURE-----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=aYrQ
-----END PGP SIGNATURE-----
Merge tag 'sysctl-7.03-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl
Pull sysctl updates from Joel Granados:
- Fix kernel-doc warnings by adjusting in file documentation
- Consolidate do_proc_* function into do_proc_vec
Consolidate three slightly different implementations of applying a
converter on all elements of a vector. Fixes to this function now
propagate to the three types.
- Replace CONFIG_PROC_SYSCTL with CONFIG_SYSCTL (they were the same)
and restrict cad_pid modifications to global root (GLOBAL_ROOT_UID)
* tag 'sysctl-7.03-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/sysctl/sysctl:
sysctl: remove CONFIG_PROC_SYSCTL, it just mirrors CONFIG_SYSCTL
sysctl: move the "cad_pid" entry from pid_table[] to kern_reboot_table[]
sysctl: repair some kernel-doc comments
sysctl: add Returns: kernel-doc for all functions
sysctl: Update API function documentation
sysctl: Rename proc_doulongvec_minmax_conv to proc_doulongvec_conv
sysctl: Group proc_handler declarations and document
sysctl: Replace do_proc_do{int,ulong,uint}vec with do_proc_vec
sysctl: Add negp parameter to douintvec converter functions
sysctl: Move default converter assignment out of do_proc_dointvec
|
||
|
Linus Torvalds
|
91ec203513 |
Networking changes for 7.3.
Core & protocols
----------------
- A few steps lowering rtnl_lock dependence:
- per-netns netdev unregistration for select SW drivers
(e.g. veth, ipvlan, tunnels)
- rtnl_lock-less FIB rule changes (RTM_NEWRULE and RTM_DELRULE)
- prepare software drivers and TC qdiscs for rtnl_lock-less GET
- Support BIG TCP (>64kB TSO) in UDP tunnels (vxlan, geneve).
- Support buffers larger than PAGE_SIZE in devmem zero-copy API.
- Improve MPTCP handling of extreme memory pressure handling,
when out-of-order queue had to be pruned.
- Report the per-group user count via RTM_GETMULTICAST.
- Expose the route deletion reason in RTM_DELROUTE.
- Add a SO_RIGHTS_NOTRUNC option to UNIX sockets to enable more useful
handling of LSM denials when receiving SCM_RIGHTS messages: instead
of truncating the message at the first blocked fd, keep every fd slot
and store the LSM errno in the blocked slot.
- IPv6 Segment Routing - support looking up the post-encap SID
(address) in a different/specified routing table.
- Support PRP RedBox (interlink) creation.
- Support per-nexthop UDP dst port in VXLAN.
- Continue converting getsockopt callbacks in a number of protocols
to iov_iter.
Ethernet
--------
- Marge initial CXL support for AMD/Solarflare NICs (shared branch
with the CXL tree).
- New drivers:
- ADIN1140 10BASE-T1S MACPHY
- Initial skeleton of Intel iXD and ZTE Dinghai drivers.
- High-speed NICs:
- AMD/Pensando:
- support firmware flashing
- Cisco (enic):
- SR-IOV V2 admin channel and MBOX protocol
- Huawei (hns3):
- support for ethtool pfc_prevention_tout
- nVidia/Mellanox:
- support sharing bandwidth control across interfaces of
the same device
- Marvell (octeontx2-pf):
- link RQ page pools to netdev for Netlink stats
- Google vNIC:
- XDP metadata support for DQ RDA
- Microsoft vNIC:
- support forcing full-page RX buffers
- Other NICs:
- Synopsys IP:
- eic7700: support for eth1
- Microchip (lan743x):
- support for RMII interface
- Wangxun:
- support for ethtool -G and -C for VFs
- add Tx timeout and PCIe error handling
- Intel (igb/igc):
- RSS key get/set support
- support for forcing link speed without auto-negotiation
- Switches:
- NXP (dpaa2):
- support bonding/LAG offload
- Mediatek:
- mt7530: EN7528 support
- initial support for MT7628
- Micrel (ksz8/9):
- refactoring work to move towards library model
- PTP support for KSZ8463
- nVidia/Mellanox:
- support rtnl-lock-less ethtool callbacks
- Realtek:
- rtl8366rb: use generic RTL83xx code
- support SGMII and HSGMII for RTL8367S
- PHYs:
- Airoha:
- EcoNet EN7528 PHY support
- DAPU Telecom
- DAPU Telecom DAP8211R(I) Gigabit PHY support
- Realtek:
- support RTL8261C_CG
- support RTL8261D
Wireless
--------
- nl80211: per-link statistics support for multi-link operation
- mac80211: AQL/airtime-fairness support for multicast
- Merge Peripheral Authentication Service (PAS) / TEE support
for ath12k (shared branch with the firmware/qcom tree).
- New drivers:
- mm81x for Morse Micro Long-Range S1G devices
- nxpwifi for NXP devices (mostly forked off from mwifiex)
- Driver changes:
- Broadcom (brcmfmac):
- DPP support, some Cypress part update
- MediaTek (mt76):
- mt7928 support
- mt7925 NAN support
- mt7996 AP powersave improvements
- Qualcomm (ath12k):
- much kernel infrastructure integration work
- AHB platform MultiPD support
- Realtek (rt89):
- LED support
- RTL8922DE support
- dual-BT coex for RTL8922D
- Intel:
- new FW version support
Bluetooth
---------
- HCI: add support for Shorter Connection Interval (SCI) feature.
- af_bluetooth: add minimal context analysis annotations.
- Driver changes:
- Intel:
- add Bluetooth SAR revision 2 support
- add vendor_reset PCI sysfs for PLDR
- Mediatek:
- add USB IDs for MT7902 and MT7922 devices
- Realtek:
- add USB IDs for 8761CU and 8852BE devices
- NXP:
- add M.2 Bluetooth device support using pwrseq
Misc
----
- DPLL support for manual/numerical oscillator control (NCO)
(implement in zl3073x).
- MCTP support for MCTP over USB v1.1 (DMTF DSP0283).
- Power-over-Ethernet: support Realtek PSE controllers.
- Remove the IBM EHEA driver.
- Remove tulip/xircom_cb driver.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----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=zDto
-----END PGP SIGNATURE-----
Merge tag 'net-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from Jakub Kicinski:
"One of the 'small improvements all over the place' releases for us.
It's hard to draw any direct comparisons because summer vacations
disrupted our patch processing (and presumably - generation) quite a
bit.
Quick and dirty count suggests we (Paolo and I) merged a very similar
number of net (632) and net-next (648) patches. This is not telling
the full story either because 1/3 to 1/2 of the net-next patches also
*seem* like AI-driven low priority fixes, cleanups and clarifications.
We are completely overwhelmed, of course. The glimmer of hope is that
we secured sufficient LLM budget and access (thank you Meta!) to run
reviews with multiple frontier models on each patch. This eliminates
some hallucinations. That said, in terms of review, the LLMs can only
do so much.
The sad truth is that our APIs (especially for rare events like PCIe
errors, timeouts etc) have always been racy, and now LLMs don't let us
ignore that. I expect our direction for the next release will be to
tweak the reviews a little bit more, but start shifting focus to
letting the LLMs take care of the busy work - managing patchwork,
automating common process complaints, editing commit messages, and
maybe applying patches which already got "reviewed-by" tags from
people we trust...
Core & protocols:
- A few steps lowering rtnl_lock dependence:
- per-netns netdev unregistration for select SW drivers (e.g.
veth, ipvlan, tunnels)
- rtnl_lock-less FIB rule changes (RTM_NEWRULE and RTM_DELRULE)
- prepare software drivers and TC qdiscs for rtnl_lock-less GET
- Support BIG TCP (>64kB TSO) in UDP tunnels (vxlan, geneve)
- Support buffers larger than PAGE_SIZE in devmem zero-copy API
- Improve MPTCP handling of extreme memory pressure handling, when
out-of-order queue had to be pruned
- Report the per-group user count via RTM_GETMULTICAST
- Expose the route deletion reason in RTM_DELROUTE
- Add a SO_RIGHTS_NOTRUNC option to UNIX sockets to enable more
useful handling of LSM denials when receiving SCM_RIGHTS messages:
instead of truncating the message at the first blocked fd, keep
every fd slot and store the LSM errno in the blocked slot
- IPv6 Segment Routing - support looking up the post-encap SID
(address) in a different/specified routing table
- Support PRP RedBox (interlink) creation
- Support per-nexthop UDP dst port in VXLAN
- Continue converting getsockopt callbacks in a number of protocols
to iov_iter
Ethernet:
- Merge initial CXL support for AMD/Solarflare NICs (shared branch
with the CXL tree)
- New drivers:
- ADIN1140 10BASE-T1S MACPHY
- Initial skeleton of Intel iXD and ZTE Dinghai drivers
- High-speed NICs:
- AMD/Pensando:
- support firmware flashing
- Cisco (enic):
- SR-IOV V2 admin channel and MBOX protocol
- Huawei (hns3):
- support for ethtool pfc_prevention_tout
- nVidia/Mellanox:
- support sharing bandwidth control across interfaces
of the same device
- Marvell (octeontx2-pf):
- link RQ page pools to netdev for Netlink stats
- Google vNIC:
- XDP metadata support for DQ RDA
- Microsoft vNIC:
- support forcing full-page RX buffers
- Other NICs:
- Synopsys IP:
- eic7700: support for eth1
- Microchip (lan743x):
- support for RMII interface
- Wangxun:
- support for ethtool -G and -C for VFs
- add Tx timeout and PCIe error handling
- Intel (igb/igc):
- RSS key get/set support
- support for forcing link speed without auto-negotiation
- Switches:
- NXP (dpaa2):
- support bonding/LAG offload
- Mediatek:
- mt7530: EN7528 support
- initial support for MT7628
- Micrel (ksz8/9):
- refactoring work to move towards library model
- PTP support for KSZ8463
- nVidia/Mellanox:
- support rtnl-lock-less ethtool callbacks
- Realtek:
- rtl8366rb: use generic RTL83xx code
- support SGMII and HSGMII for RTL8367S
- PHYs:
- Airoha:
- EcoNet EN7528 PHY support
- DAPU Telecom
- DAPU Telecom DAP8211R(I) Gigabit PHY support
- Realtek:
- support RTL8261C_CG
- support RTL8261D
Wireless:
- nl80211: per-link statistics support for multi-link operation
- mac80211: AQL/airtime-fairness support for multicast
- Merge Peripheral Authentication Service (PAS) / TEE support for
ath12k (shared branch with the firmware/qcom tree)
- New drivers:
- mm81x for Morse Micro Long-Range S1G devices
- nxpwifi for NXP devices (mostly forked off from mwifiex)
- Driver changes:
- Broadcom (brcmfmac):
- DPP support, some Cypress part update
- MediaTek (mt76):
- mt7928 support
- mt7925 NAN support
- mt7996 AP powersave improvements
- Qualcomm (ath12k):
- much kernel infrastructure integration work
- AHB platform MultiPD support
- Realtek (rt89):
- LED support
- RTL8922DE support
- dual-BT coex for RTL8922D
- Intel:
- new FW version support
Bluetooth:
- HCI: add support for Shorter Connection Interval (SCI) feature
- af_bluetooth: add minimal context analysis annotations
- Driver changes:
- Intel:
- add Bluetooth SAR revision 2 support
- add vendor_reset PCI sysfs for PLDR
- Mediatek:
- add USB IDs for MT7902 and MT7922 devices
- Realtek:
- add USB IDs for 8761CU and 8852BE devices
- NXP:
- add M.2 Bluetooth device support using pwrseq
Misc:
- DPLL support for manual/numerical oscillator control (NCO)
(implement in zl3073x)
- MCTP support for MCTP over USB v1.1 (DMTF DSP0283)
- Power-over-Ethernet: support Realtek PSE controllers
- Remove the IBM EHEA driver
- Remove tulip/xircom_cb driver"
* tag 'net-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1433 commits)
net/mlx5e: do not HW-GRO coalesce small frames
net: openvswitch: fix nf_connlabels leak in ovs_ct_init
net: add missing ref_tracker_dir_exit() to alloc_netdev_mqs()
net: openvswitch: fix flow mask use-after-free on flow deletion
sctp: stop processing a packet once its association is deleted
dpll: zl3073x: add PTP clock support
dpll: zl3073x: add channel ToD, phase step and TIE operations
dpll: zl3073x: scale poll interval proportionally to timeout
ptp: vmclock: prevent read-only mappings from becoming writable
ipv4: reject undersized MTUs in ip_do_fragment()
bonding: initialize err for empty target lists
net: dsa: initial support for MT7628 embedded switch
net: dsa: initial MT7628 tagging driver
net: phy: mediatek: add phy driver for MT7628 built-in Fast Ethernet PHYs
dt-bindings: net: dsa: add MT7628 ESW
net: pse-pd: realtek-pse-mcu: add UART transport
net: pse-pd: realtek-pse-mcu: add I2C transport
net: pse-pd: add Realtek PSE MCU core
dt-bindings: net: pse-pd: add bindings for Realtek PSE MCU
vsock: use sock_error() to consume sk_err after a failed connect
...
|
||
|
Linus Torvalds
|
5a8cd539ac |
Major changes:
- Redesign the verifier error reporting: failures now carry source and
instruction annotations along with the causal event history that led
to them, making program rejections far easier to debug and repair
(Kumar Kartikeya Dwivedi)
- Add arena argument support to kfuncs and struct_ops through the new
__arena and __arena__nullable suffixes (Tejun Heo, Puranjay Mohan,
Kumar Kartikeya Dwivedi, Ihor Solodrai)
- Signed BPF program loader rework to accommodate both BPF and security
community needs where the kernel runs the signature verification at
BPF_PROG_LOAD time before the LSM admission hook (Daniel Borkmann)
- Add a set of ksock kfuncs which let BPF LSM and syscall programs
create, connect and send on UDP sockets in order to emit telemetry
data (Mahe Tardy)
- Unify helper and kfunc call argument verification and classify kfunc
arguments purely from BTF into a generated bpf_func_proto which is
computed once at add-call time (Amery Hung)
Other features and fixes:
- Enable EXECMEM_ROX_CACHE for BPF allocations on x86 (Mike Rapoport)
- Add bidirectional VLAN support to bpf_fib_lookup() through the new
BPF_FIB_LOOKUP_VLAN and BPF_FIB_LOOKUP_VLAN_INPUT flags
(Avinash Duduskar)
- Infer zext_dst from static register liveness analysis to fix 32-bit
zero-extension semantics, and remove the artificial limitations on
pointer types eligible for spilling (Eduard Zingerman)
- Inline the numeric open-coded iterator kfuncs so that bpf_for() loops
no longer pay a kfunc call on every iteration (Puranjay Mohan)
- Add an arena-based bitmap data structure to libarena along with
serial and parallel selftests (Emil Tsalapatis)
- Teach resolve_btfids to discover kfuncs from the kernel's BTF ID sets
and to emit kfunc BTF decl tags, reducing the kernel build's
dependency on pahole features (Ihor Solodrai)
- Add BPF_F_ADJ_ROOM_DECAP_* flags to bpf_skb_adjust_room() so that
tunnel decapsulation can update the GSO and encapsulation state of
the skb (Nick Hudson)
- Fix the ring buffer pending_pos walk and the available-data
accounting on 32-bit position wrap (Israel Téllez García)
- Add memory usage accounting for arena maps and fix an mmap_lock
deadlock on arena lock failure (Jiayuan Chen)
- Add tracing_multi link info support to the kernel UAPI and bpftool,
and refactor the stack map code to run with preemption disabled
(Jiri Olsa)
- Support BPF_F_EGRESS in bpf_redirect_peer() to emit the skb in the
egress direction of the target's peer device (Jordan Rife)
- Add a KF_SPINLOCK_SAFE kfunc flag so that providers, in particular
modules, can declare kfuncs safe to call under bpf_spin_lock instead
of relying on the verifier's hard-coded allowlist (Kaitao Cheng)
- Introduce global percpu data for BPF programs with libbpf probing
and bpftool skeleton support, and stop exposing uninitialized kernel
heap memory when copying per-CPU map values (Leon Hwang)
- Add s390 JIT support for load-acquire and store-release instructions
(Maxim Khmelevskii)
- Fix a CFI mismatch in the task work callback and an arm64 KASAN
false positive after bpf_throw() (Mykyta Yatsenko)
- Reject writes through untrusted BTF pointers and bound the
rdonly/rdwr_buf_size kfunc arguments (Nicholas Dudar)
- Invalidate RCU pointers only after the final spin unlock and account
for preempt and IRQ disabled regions as overlapping RCU protection
(Ning Ding)
- Support mixing bpf2bpf calls and tail calls on RV64, add signed
operations and 32-bit atomics to the RV32 JIT, and add timed may_goto
support (Pu Lehui, Kuan-Wei Chiu, Feng Jiang)
- Fix a use-after-free on mm_struct in bpf_find_vma() for foreign tasks
and an mmap_lock leak in the irq_work path (Sanghyun Park)
- Populate mmap-able BPF array map memory lazily which makes mmap() O(1)
instead of proportional to the map size (Song Liu)
- Introduce a jit_required flag and reject programs with inlined
helpers when no JIT is available, where the interpreter would
otherwise jump into an invalid address (Tiezhu Yang)
- Fix the x86 JIT per-CPU address resolution into an extended register
where the REX prefix dropped the high destination register bit
(Vineet Gupta)
- Reject MEM_ALLOC BTF accesses past object bounds, arena frees below
the arena base, and mixed arena and ordinary atomic paths
(Yiyang Chen)
- Fix the trampoline handling of 128-bit arguments and of return values
larger than 8 bytes (Yonghong Song)
- Ensure that any fault prone load is rewritten with exception table
handling, and fix the arena load-acquire and atomic fetch handling
in the x86, arm64, riscv and s390 JITs (Daniel Borkmann)
- Many more fixes and cleanups across the verifier, arena, trampolines,
sockmap, cgroup, ring buffer, x86/arm64/riscv/s390 JITs, libbpf,
bpftool, resolve_btfids and selftests.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
-----BEGIN PGP SIGNATURE-----
iIsEABYKADMWIQTFp0I1jqZrAX+hPRXbK58LschIgwUCaoNzBBUcZGFuaWVsQGlv
Z2VhcmJveC5uZXQACgkQ2yufC7HISIOb3QEAy5cyrLXY+VWofhsC9wULkHyETOdj
oTkdohQomZp4VhEA/1RZXdHVS1ANFgreWv0fMorUOHEKv2ZuNokfk3LWgW4L
=VRyL
-----END PGP SIGNATURE-----
Merge tag 'bpf-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
Pull bpf updates from Daniel Borkmann:
"Major changes:
- Redesign the verifier error reporting: failures now carry source
and instruction annotations along with the causal event history
that led to them, making program rejections far easier to debug and
repair (Kumar Kartikeya Dwivedi)
- Add arena argument support to kfuncs and struct_ops through the new
__arena and __arena__nullable suffixes (Tejun Heo, Puranjay Mohan,
Kumar Kartikeya Dwivedi, Ihor Solodrai)
- Signed BPF program loader rework to accommodate both BPF and
security community needs where the kernel runs the signature
verification at BPF_PROG_LOAD time before the LSM admission hook
(Daniel Borkmann)
- Add a set of ksock kfuncs which let BPF LSM and syscall programs
create, connect and send on UDP sockets in order to emit telemetry
data (Mahe Tardy)
- Unify helper and kfunc call argument verification and classify
kfunc arguments purely from BTF into a generated bpf_func_proto
which is computed once at add-call time (Amery Hung)
Other features and fixes:
- Enable EXECMEM_ROX_CACHE for BPF allocations on x86 (Mike Rapoport)
- Add bidirectional VLAN support to bpf_fib_lookup() through the new
BPF_FIB_LOOKUP_VLAN and BPF_FIB_LOOKUP_VLAN_INPUT flags (Avinash
Duduskar)
- Infer zext_dst from static register liveness analysis to fix 32-bit
zero-extension semantics, and remove the artificial limitations on
pointer types eligible for spilling (Eduard Zingerman)
- Inline the numeric open-coded iterator kfuncs so that bpf_for()
loops no longer pay a kfunc call on every iteration (Puranjay
Mohan)
- Add an arena-based bitmap data structure to libarena along with
serial and parallel selftests (Emil Tsalapatis)
- Teach resolve_btfids to discover kfuncs from the kernel's BTF ID
sets and to emit kfunc BTF decl tags, reducing the kernel build's
dependency on pahole features (Ihor Solodrai)
- Add BPF_F_ADJ_ROOM_DECAP_* flags to bpf_skb_adjust_room() so that
tunnel decapsulation can update the GSO and encapsulation state of
the skb (Nick Hudson)
- Fix the ring buffer pending_pos walk and the available-data
accounting on 32-bit position wrap (Israel Téllez García)
- Add memory usage accounting for arena maps and fix an mmap_lock
deadlock on arena lock failure (Jiayuan Chen)
- Add tracing_multi link info support to the kernel UAPI and bpftool,
and refactor the stack map code to run with preemption disabled
(Jiri Olsa)
- Support BPF_F_EGRESS in bpf_redirect_peer() to emit the skb in the
egress direction of the target's peer device (Jordan Rife)
- Add a KF_SPINLOCK_SAFE kfunc flag so that providers, in particular
modules, can declare kfuncs safe to call under bpf_spin_lock
instead of relying on the verifier's hard-coded allowlist (Kaitao
Cheng)
- Introduce global percpu data for BPF programs with libbpf probing
and bpftool skeleton support, and stop exposing uninitialized
kernel heap memory when copying per-CPU map values (Leon Hwang)
- Add s390 JIT support for load-acquire and store-release
instructions (Maxim Khmelevskii)
- Fix a CFI mismatch in the task work callback and an arm64 KASAN
false positive after bpf_throw() (Mykyta Yatsenko)
- Reject writes through untrusted BTF pointers and bound the
rdonly/rdwr_buf_size kfunc arguments (Nicholas Dudar)
- Invalidate RCU pointers only after the final spin unlock and
account for preempt and IRQ disabled regions as overlapping RCU
protection (Ning Ding)
- Support mixing bpf2bpf calls and tail calls on RV64, add signed
operations and 32-bit atomics to the RV32 JIT, and add timed
may_goto support (Pu Lehui, Kuan-Wei Chiu, Feng Jiang)
- Fix a use-after-free on mm_struct in bpf_find_vma() for foreign
tasks and an mmap_lock leak in the irq_work path (Sanghyun Park)
- Populate mmap-able BPF array map memory lazily which makes mmap()
O(1) instead of proportional to the map size (Song Liu)
- Introduce a jit_required flag and reject programs with inlined
helpers when no JIT is available, where the interpreter would
otherwise jump into an invalid address (Tiezhu Yang)
- Fix the x86 JIT per-CPU address resolution into an extended
register where the REX prefix dropped the high destination register
bit (Vineet Gupta)
- Reject MEM_ALLOC BTF accesses past object bounds, arena frees below
the arena base, and mixed arena and ordinary atomic paths (Yiyang
Chen)
- Fix the trampoline handling of 128-bit arguments and of return
values larger than 8 bytes (Yonghong Song)
- Ensure that any fault prone load is rewritten with exception table
handling, and fix the arena load-acquire and atomic fetch handling
in the x86, arm64, riscv and s390 JITs (Daniel Borkmann)
- Many more fixes and cleanups across the verifier, arena,
trampolines, sockmap, cgroup, ring buffer, x86/arm64/riscv/s390
JITs, libbpf, bpftool, resolve_btfids and selftests"
* tag 'bpf-next-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (373 commits)
selftests/bpf: Add tests for a store on a fault prone qdisc pointer
selftests/bpf: Add tests for fault prone loads out of RCU pointers
selftests/bpf: Add tests for pointer type merge at a shared load
selftests/bpf: Remove duplicate copies of the arena spinlock qnodes
selftests/bpf: Retry stat generation in cgroup_iter_memcg
selftests/bpf: Test pseudo-function policy diagnostics
bpf: Distinguish function references in policy diagnostics
bpf: Preserve source attribution without source text
selftests/bpf: Test kfunc argument diagnostics
bpf: Correct kfunc argument diagnostics
bpf: Use canonical stack argument names in diagnostics
bpf: Preserve R0 lineage across helper calls
selftests/bpf: Exercise negative optlen in cgroup getsockopt hook
bpf: Reject negative optlen in cgroup getsockopt hook
selftests/bpf: tc_tunnel - validate decap GSO and encapsulation state
bpf: Clear decap state on skb_adjust_room shrink path
bpf: Allow new DECAP flags and add guard rails
bpf: Add BPF_F_ADJ_ROOM_DECAP_* flags for tunnel decapsulation
bpf: Refactor masks for ADJ_ROOM flags and encap validation
bpf: Name the enum for BPF_FUNC_skb_adjust_room flags
...
|
||
Breno Leitao
|
ecbccdbdab |
efi/runtime-wrappers: factor out efi_rts_park_worker()
x86's efi_crash_gracefully_on_page_fault() ends in an infinite schedule() loop so the kworker that faulted in firmware never runs efi_rts_wq again. A later change needs the same "park this worker forever" primitive on the runtime service timeout path, so factor the loop into a shared efi_rts_park_worker() and call it from the x86 page-fault handler. No functional change. Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> |
||
|
Linus Torvalds
|
09005a6398 |
lsm/stable-7.3 PR 20260814
-----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEES0KozwfymdVUl37v6iDy2pc3iXMFAmp/iWkUHHBhdWxAcGF1 bC1tb29yZS5jb20ACgkQ6iDy2pc3iXPvbQ/8DT62doPc0ECTXQXcTNjBOddjNspB pk2mK238UQP50aU7/su4RdgmGG+spVoPc7oqeavnm2J+c552t0eHI61itYMe7nkY uOIjShLN93g9pjG4IqhmCDvGTpsQp9Oiec5F/6C++7OUT5oUqm/faXAZtwFLFgmx pTNf91w+u5s3DJjqG5zqEdteRrQMzDNozdq4YbNkzeIiofsUJvq6IJ6rV66kyOa/ zk2hC6zI3mL0Vuin3WdxKqd1mD7mhYWxjl2nt/0TTIRMKmycxovlvbfADXXi2hlp 4tALFgbEmeOgXr7HWvOqClNZ002/gG84Ty2F/8D/p0EGlzOc0Ga/q1dSAM/JJ5RZ bArXY3qgioU4/zOp998kXIYgRV3i6ZBBEzqTavcVtgCtNTgc2MH+KftD9HJaVjx8 keRClwB85r72mNqKVcTVgQ8MJvA+Fq03JHc/JH3npv2tSPELK4V4vkW0nCGQsLXV /oX87E9/Wh6wWchvUTYToX5j6eNRUjD8xQzIAbPWTilusPcIp9pW58I6gaDKAu6A dNox9I064JfLK+LEmn8Le8AatTT0g/mj1wTD0KeRfo0zKyjSYoT0ECnXBeAfg9QI Vr6ZTXPM0fMpKEHqJvYLJAqVbm3kJKZqxr1z4nmz14elms1SmwdmOSq66Qm8fRCS P5fGVxFzNbDVZvs= =eToU -----END PGP SIGNATURE----- Merge tag 'lsm-pr-20260814' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm Pull LSM updates from Paul Moore: - Remove task_euid() The task_euid(), and Rust counterpart, was never widely used, for good reason, and now that the only user is gone we're removing it to rid ourselves of both dead and funky code. - Documentation improvements Correct some of the kdoc comments for security_task_prctl() and clarify the rust comments on task UID accessors. - Fix a memory leak in the LSM syscall selftests * tag 'lsm-pr-20260814' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm: selftests/lsm: Fix memory leak in attr_lsm_count cred: delete task_euid() rust: task: clarify comments on task UID accessors lsm: clarify security_task_prctl() hook documentation |
||
|
Linus Torvalds
|
081e5bf2a9 |
tracing updates for v7.3:
- Expose btf_ids to trace events
In order to allow BPF programs to attach to system call trace events (which
are actually pseudo trace events built on top of raw_syscall events),
expose the BTF ID of the events. This will allow BPF programs better
precision in attaching to events.
- Use "u64" to assign to hist_field->type
Instead of using kstrdup("u64", GFP_KERNEL) to assign the hist_field->type,
just point it to "u64" instead. The hist_field->type is freed via
kfree_const().
- Replace kmalloc()/strcpy() with kstrdup() for trace_printk
Instead of having two calls to copy the module format string, just use
kstrdup().
- Use __free() in trace event histograms and triggres where possible
- Use seq_buf in trace event code instead of strcat()
Instead of calculating the size of the buffer to use and filling it with
strcat(), use the seq_buf infrastructure that takes care of making sure
not to overflow the string size.
- Reject invalid preemptirq_delay_test CPU affinity
The preempt_delay_test module can take an invalid CPU affinity mask and
create confusing output. Simply have the module reject invalid affinity
masks.
- Prevent division by zero in ftrace_ops sample module code
If the ftrace_ops sample module code receives the module parameter
nr_function_calls set to zero, it can cause a division by zero error.
- Warn when an event dereferences a parameter in TP_printk()
On boot up and module load, the trace event TP_printk() is scanned for
possible bugs. As the TP_printk() code is executed when the user reads the
"trace" file and processes the data written when the trace_event executed,
the data it reads can be literally days old. The scan currently checks for
dereferencing printk formats like "%pI6". But it does not check if the
parameters themselves have a dereference like:
TP_printk("offset %08x: value %08x",
(u32)(__entry->addr - __entry->edma->membase), __entry->value)
__entry represents the pointer to the event on the ring buffer. The
__entry->edma->membase is dereferencing a pointer on the ring buffer to
find membase, but the __entry->edma may no longer be a valid pointer.
Warn on this case too.
- Replace some strcpy() with strscpy()
- Clean up mmiotrace events to use assign_type() macro
The assign_type() macro makes sure the event type is indeed the type that
is being parsed. The mmiotrace trace was written before that macro was
created so it just simply typecasted the pointer.
Replace the typecasting with the macro.
- Have the ENUM processing to numbers only process what is added
The code that converts ENUMs to their numbers in the trace events scanned
all events to do the processing. This was true when a module was loaded
too. That is, instead of processing just the events for the module, it
processed *all* events. Even the builtin ones that were processed at boot
up.
Add a check for the event->module matching mod if it is a module before
processing it.
-----BEGIN PGP SIGNATURE-----
iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCan+WhRQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qk1sAQDIvuux39ii379T9hTm7hgXF9Dr8aH7
RgxILUmr3c4y6QD+Iv9QQto+NfauqjkEMdPuVdOyUpDCYPTRw9i/YCty7Qk=
=vya7
-----END PGP SIGNATURE-----
Merge tag 'trace-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing updates from Steven Rostedt:
- Expose btf_ids to trace events
In order to allow BPF programs to attach to system call trace events
(which are actually pseudo trace events built on top of raw_syscall
events), expose the BTF ID of the events. This will allow BPF
programs better precision in attaching to events.
- Use "u64" to assign to hist_field->type
Instead of using kstrdup("u64", GFP_KERNEL) to assign the
hist_field->type, just point it to "u64" instead. The
hist_field->type is freed via kfree_const().
- Replace kmalloc()/strcpy() with kstrdup() for trace_printk
Instead of having two calls to copy the module format string, just
use kstrdup().
- Use __free() in trace event histograms and triggres where possible
- Use seq_buf in trace event code instead of strcat()
Instead of calculating the size of the buffer to use and filling it
with strcat(), use the seq_buf infrastructure that takes care of
making sure not to overflow the string size.
- Reject invalid preemptirq_delay_test CPU affinity
The preempt_delay_test module can take an invalid CPU affinity mask
and create confusing output. Simply have the module reject invalid
affinity masks.
- Prevent division by zero in ftrace_ops sample module code
If the ftrace_ops sample module code receives the module parameter
nr_function_calls set to zero, it can cause a division by zero error.
- Warn when an event dereferences a parameter in TP_printk()
On boot up and module load, the trace event TP_printk() is scanned
for possible bugs. As the TP_printk() code is executed when the user
reads the "trace" file and processes the data written when the
trace_event executed, the data it reads can be literally days old.
The scan currently checks for dereferencing printk formats like
"%pI6". But it does not check if the parameters themselves have a
dereference like:
TP_printk("offset %08x: value %08x",
(u32)(__entry->addr - __entry->edma->membase), __entry->value)
__entry represents the pointer to the event on the ring buffer. The
__entry->edma->membase is dereferencing a pointer on the ring buffer
to find membase, but the __entry->edma may no longer be a valid
pointer.
Warn on this case too.
- Replace some strcpy() with strscpy()
- Clean up mmiotrace events to use assign_type() macro
The assign_type() macro makes sure the event type is indeed the type
that is being parsed. The mmiotrace trace was written before that
macro was created so it just simply typecasted the pointer.
Replace the typecasting with the macro.
- Have the ENUM processing to numbers only process what is added
The code that converts ENUMs to their numbers in the trace events
scanned all events to do the processing. This was true when a module
was loaded too. That is, instead of processing just the events for
the module, it processed *all* events. Even the builtin ones that
were processed at boot up.
Add a check for the event->module matching mod if it is a module
before processing it.
* tag 'trace-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (21 commits)
tracing: Have trace_event_update_all() only handle module that is loading
tracing: Cleanup event_enable_trigger_parse() by using __free()
tracing: Report every TP_printk double dereference
tracing/mmiotrace: Use trace_assign_type() in mmio_print_mark()
tracing: Make per-template BTF id lists file-local
tracing: Use seq_buf for string concatenation
tracing: Use strscpy() instead of strcpy() in trace_sched_switch
tracing: Warn when an event dereferences a pointer in TP_printk()
samples/ftrace: Prevent division by zero when nr_function_calls is zero
tracing: Reject invalid preemptirq_delay_test CPU affinity
fgraph: Use trace_seq_putc() in print_graph_return()
tracing/user_events: Replace a seq_printf() call by seq_puts() in user_seq_show()
tracing/user_events: Use seq_putc() in two functions
tracing: Bound histogram expression strings with seq_buf
tracing: Return ERR_PTR() from expr_str()
tracing: Use __free() for expr_str() buffer
kernel/trace/trace_printk: Use kstrdup() instead of kmalloc() and strcpy()
tracing: Point constant hist field type to string literal
selftests/bpf: Add test for tracepoint btf_ids tracefs file
tracing: Expose tracepoint BTF ids via tracefs
...
|
||
|
Linus Torvalds
|
00d66b29a6 |
ftrace updates for 7.3:
- Deprecrate ftrace_enabled in disabling ftrace The file /proc/sys/kernel/ftrace_enabled was created when ftrace was first introduced back in 2008. It was to be a "kill switch" if something was to go wrong. It was also used as a way to turn off function tracing for the latency tracers that would have it on by default. But in 2013 (Linux 3.10) the option "function-trace" was introduced to disable function tracing for the latency tracers as the "ftrace_enabled" file was considered too big of a hammer and caused too many side effects. When live kernel patching came along, disabling ftrace via the ftrace_enabled file would put the system into an unstable state if a live kernel patch was installed. This created the need to mark some function hooks as "PERMANENT". Now there's a need for BPF usage marked as PERMANENT for the same reasons. The file "ftrace_enabled" usage is no longer viable. It doesn't do what it says it does and there is no reason to use it. Make writing '0' to it a nop and print a message saying its usage is deprecated. The return value of writing '0' is -EOPNOTSUPP so that user space will error on that write (hopefully to inform any developer that it no longer works). Eventually the file should be removed completely, but for now just making it not do anything is the path forward to that. - Update the livepatch tests to handle ftrace_enabled being disabled Because in the past, livepatch was broken by ftrace_enabled being turned off, there's a test case that checks to make sure it still doesn't break. But having the write of '0' return an error caused that test to break. Updated the test to handle the new change. -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCan9buBQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qkrAAP9lStpPUUVGUVprdRttG8tv4LlSMqX3 +A5WdksIKD+XMAD+ODdXKQkjynRpTf9YnIV3PXNg6Adi3ItOXG1+UsbWGQY= =QLhM -----END PGP SIGNATURE----- Merge tag 'ftrace-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull ftrace updates from Steven Rostedt: - Deprecrate ftrace_enabled in disabling ftrace The file /proc/sys/kernel/ftrace_enabled was created when ftrace was first introduced back in 2008. It was to be a "kill switch" if something was to go wrong. It was also used as a way to turn off function tracing for the latency tracers that would have it on by default. But in 2013 (Linux 3.10) the option "function-trace" was introduced to disable function tracing for the latency tracers as the "ftrace_enabled" file was considered too big of a hammer and caused too many side effects. When live kernel patching came along, disabling ftrace via the ftrace_enabled file would put the system into an unstable state if a live kernel patch was installed. This created the need to mark some function hooks as "PERMANENT". Now there's a need for BPF usage marked as PERMANENT for the same reasons. The file "ftrace_enabled" usage is no longer viable. It doesn't do what it says it does and there is no reason to use it. Make writing '0' to it a nop and print a message saying its usage is deprecated. The return value of writing '0' is -EOPNOTSUPP so that user space will error on that write (hopefully to inform any developer that it no longer works). Eventually the file should be removed completely, but for now just making it not do anything is the path forward to that. - Update the livepatch tests to handle ftrace_enabled being disabled Because in the past, livepatch was broken by ftrace_enabled being turned off, there's a test case that checks to make sure it still doesn't break. But having the write of '0' return an error caused that test to break. Updated the test to handle the new change. * tag 'ftrace-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: selftests/livepatch: update test-ftrace.sh for deprecated ftrace_enabled ftrace: deprecate disabling via ftrace_enabled sysctl |
||
|
Linus Torvalds
|
3793b558ff |
RTLA updates for v7.3
- Extend support for unsetting CLI options libsubcmd auto-generates "--no-<option>" to unset options, provided the option callback supports it. Implement this for RTLA CLI beyond boolean options, and document the few exceptions that are left out. - Test all tracer options in runtime tests Verify that RTLA sets osnoise/timerlat options correctly by reading them from tracefs during runtime tests. - Improve range validation for option arguments Make CLI range validation consistent with the kernel limits and unify implementation and error messages between options. - Improve invalid option argument parsing Consistently reject invalid values for numeric option arguments with a unified error message for all options. -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCan+DpBQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qpEsAP90dBAnAxttyHCUIfdDJuVZRRu2EXzn xuBVPvL2sMt89wEA8Un0jTztzmGEUohIWpUG4tQJ7Ebi9xGYqkbmcymbKQo= =aUyh -----END PGP SIGNATURE----- Merge tag 'trace-tools-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull RTLA updates from Steven Rostedt: - Extend support for unsetting CLI options libsubcmd auto-generates "--no-<option>" to unset options, provided the option callback supports it. Implement this for RTLA CLI beyond boolean options, and document the few exceptions that are left out. - Test all tracer options in runtime tests Verify that RTLA sets osnoise/timerlat options correctly by reading them from tracefs during runtime tests. - Improve range validation for option arguments Make CLI range validation consistent with the kernel limits and unify implementation and error messages between options. - Improve invalid option argument parsing Consistently reject invalid values for numeric option arguments with a unified error message for all options. * tag 'trace-tools-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: rtla/cli: Unify and improve handling of invalid option arguments rtla/cli: Unify and improve range validation logic rtla/tests: Test all tracer options in runtime tests Documentation/rtla: Document unsetting options rtla: Add unit tests for CLI with unset rtla: Add unit tests for unset in opt callbacks rtla: Allow unsetting non-list custom-callback CLI options |
||
|
Linus Torvalds
|
55ee4b931a |
Real-time Verifier updates for v7.3
- Switch LTL and DOT parsers to Lark in code generation tool The rvgen code generation tool originally parsed DOT files and LTL specifications using custom string parsing and Ply, which is no longer maintained. The DOT parser was fragile and prone to failure on minor format variations. Both LTL and DOT parsers have been rewritten to use the Lark parsing library. - Simplify Hybrid Automata clock variables The clock variables in hybrid automata monitors now use a single representation of the elapsed time since the clock was reset, rather than converting between invariant and guard representations. This allows simpler code generation for the newly refactored parser. - Generate cleanup hook for per-obj monitor The code generation scripts now adds a cleanup function to per-obj monitors for the user to wire to the appropriate event (e.g. sched_process_exit for tasks). - Reduce read_lock scope during per-task cleanup Take the tasklist_lock only when necessary, that is when iterating over for_each_process_thread(). - Simplify task monitor slot management Only rely on the slot array for per-task slot management to avoid inconsistency with the unused counter. - Improve rvgen code robustness and templates Use pathlib in rvgen and improve kernel path discovery. Also improve consistency across templates when generating code (e.g. author placeholder and monitor struct name). - Update rtapp sleep monitor Simplify the sleep monitor by excluding kernel threads and updating the nanosleep check to focus only on CLOCK_REALTIME. Also switch to use the sched_exit tracepoint to run in the context of the offending (wakee) task. - Add wakeup monitor Add the new rtapp/wakeup monitor to detect when lower-priority tasks wake up higher-priority ones, complementing the existing sleep monitor by running in the waker context and capturing its stack trace. - Fix tools/rv exit status on failure Ensure the rv tool returns a failure exit code when a monitor fails to start because it was already running. - Add automated selftests for tools/rv and rvgen Introduced automated bash selftests to validate rv monitor listing and execution under different configurations. Added tests for the rvgen code generator, validating generated files against expected output (golden). Tests are reachable via make check. - Add KUnit test coverage for verification monitors Added comprehensive KUnit tests to validate the functionality of deterministic, hybrid, and LTL monitors by emulating event sequences and timing in a mock environment without affecting the running kernel while expecting mock reactions to fire. Ensure real RV monitors cannot run during KUnit tests to avoid state corruption. - Mock current in rv monitors Mock the call to current in rv monitors when the KUnit tests are built to allow them to run the test on dummy tasks. No overhead is expected when KUnit tests aren't running. - Introduce rvgen kunit subcommand Added a new 'kunit' subcommand to rvgen to automatically patch an already generated monitor with KUnit integration templates by parsing its event handlers and creating the required mock structures and initializations. - Refine kernel verification selftests Added new selftests for the deadline and stall monitors and rearranged the existing wwnr_printk test to resolve flakiness. Additionally, fixed an issue in the selftests framework where negative assertion failures were not correctly propagated due to shell rules. - Fix 32-bit build of nomiss KUnit test A previous commit introduced a division between an u64 and a constant value and that doesn't build on 32-bit systems. Use div_u64() instead. - Document changes in sleep monitor The sleep monitor introduced some changes in the past like allowing epoll_wait() as a valid sleep and a task going to runnable before scheduling as a valid wakeup. Document both. -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCan+BsRQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qicKAQD5aLUnn4zrZGuT+k5qmNmmbOsAXriS g+TfUXShvRoL6QD+KrsUyNf9KzLd+IqJG1N3G3wbhOiVd60Y5srLZP87UgA= =iqRx -----END PGP SIGNATURE----- Merge tag 'trace-rv-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull Real-time Verifier updates from Steven Rostedt: - Switch LTL and DOT parsers to Lark in code generation tool The rvgen code generation tool originally parsed DOT files and LTL specifications using custom string parsing and Ply, which is no longer maintained. The DOT parser was fragile and prone to failure on minor format variations. Both LTL and DOT parsers have been rewritten to use the Lark parsing library. - Simplify Hybrid Automata clock variables The clock variables in hybrid automata monitors now use a single representation of the elapsed time since the clock was reset, rather than converting between invariant and guard representations. This allows simpler code generation for the newly refactored parser. - Generate cleanup hook for per-obj monitor The code generation scripts now adds a cleanup function to per-obj monitors for the user to wire to the appropriate event (e.g. sched_process_exit for tasks). - Reduce read_lock scope during per-task cleanup Take the tasklist_lock only when necessary, that is when iterating over for_each_process_thread(). - Simplify task monitor slot management Only rely on the slot array for per-task slot management to avoid inconsistency with the unused counter. - Improve rvgen code robustness and templates Use pathlib in rvgen and improve kernel path discovery. Also improve consistency across templates when generating code (e.g. author placeholder and monitor struct name). - Update rtapp sleep monitor Simplify the sleep monitor by excluding kernel threads and updating the nanosleep check to focus only on CLOCK_REALTIME. Also switch to use the sched_exit tracepoint to run in the context of the offending (wakee) task. - Add wakeup monitor Add the new rtapp/wakeup monitor to detect when lower-priority tasks wake up higher-priority ones, complementing the existing sleep monitor by running in the waker context and capturing its stack trace. - Fix tools/rv exit status on failure Ensure the rv tool returns a failure exit code when a monitor fails to start because it was already running. - Add automated selftests for tools/rv and rvgen Introduced automated bash selftests to validate rv monitor listing and execution under different configurations. Added tests for the rvgen code generator, validating generated files against expected output (golden). Tests are reachable via make check. - Add KUnit test coverage for verification monitors Added comprehensive KUnit tests to validate the functionality of deterministic, hybrid, and LTL monitors by emulating event sequences and timing in a mock environment without affecting the running kernel while expecting mock reactions to fire. Ensure real RV monitors cannot run during KUnit tests to avoid state corruption. - Mock current in rv monitors Mock the call to current in rv monitors when the KUnit tests are built to allow them to run the test on dummy tasks. No overhead is expected when KUnit tests aren't running. - Introduce rvgen kunit subcommand Added a new 'kunit' subcommand to rvgen to automatically patch an already generated monitor with KUnit integration templates by parsing its event handlers and creating the required mock structures and initializations. - Refine kernel verification selftests Added new selftests for the deadline and stall monitors and rearranged the existing wwnr_printk test to resolve flakiness. Additionally, fixed an issue in the selftests framework where negative assertion failures were not correctly propagated due to shell rules. - Fix 32-bit build of nomiss KUnit test A previous commit introduced a division between an u64 and a constant value and that doesn't build on 32-bit systems. Use div_u64() instead. - Document changes in sleep monitor The sleep monitor introduced some changes in the past like allowing epoll_wait() as a valid sleep and a task going to runnable before scheduling as a valid wakeup. Document both. * tag 'trace-rv-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (40 commits) Documentation/rv: Explain epoll and aborted sleeps rv: Fix 32-bit build of nomiss KUnit test selftests/verification: Add selftests for deadline and stall monitors selftests/verification: Rearrange the wwnr_printk test selftests/verification: Fix wrong errexit assumption rv: Add KUnit tests for some LTL monitors rv: Add KUnit mock for current rv: Add KUnit tests for some DA/HA monitors rv: Export task monitor slot and react symbols verification/rvgen: Add selftests for rvgen kunit verification/rvgen: Add the rvgen kunit subcommand verification/rvgen: Add selftests verification/rvgen: Add golden and spec folders for tests tools/rv: Add selftests verification/rvgen: Improve consistency in template files verification/rvgen: Use pathlib instead of os.path verification/rvgen: Improve rv_dir discovery in RVGenerator tools/rv: Fix exit status when monitor execution fails rv: Use generic rv_this for the rv_monitor variable in LTL rv/rtapp: Add wakeup monitor ... |
||
|
Linus Torvalds
|
307b9ddbbc |
spi: Updates for v7.3
Along with a lot of driver specific work we've got a couple of core
features here. The bigger one is that we've now got support for
instantiating devices from sysfs similarly to how it's already done for
I2C, this is used with development boards with non-enumerable expansion
headers since SPI devices need to be manually specified. We also have
support for the DQS signal on higher end flash devices.
- Support for intantiating devices from sysfs, useful for development
boards with non-enumerable plugin modules, from Vishwaroop A.
- Support for DQS in spi-mem, an additional signal used by flash
devices to avoid clock skew from Miquel Raynal.
- Support for more advanced SPI modes on DesignWare controllers from
Sudip Mukherjee.
- Changes from Jisheng Zhang to update to modern methods of specifying
the PM callbacks.
- Fixes for DMA mapping error handling, plus KUnit tests for this, from
Honghui Jiang.
- Substantial cleanup and performance work in the nxp-spi driver.
- Support for Microchip LAN969x, Nuvoton MA35D1 QSPI, Qualcomm SA8255p
and SA8797P, and StarFive JHB100 SFC.
There is a trivial add/add conflict with the KUnit tree in their
all_tests.config.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmqDOgcACgkQJNaLcl1U
h9BKxQf/QznwKffXtoEL4ZFVBckmuYXRzbkHLoX1v7upZ3QFEPG8K6rRySaXufDI
BX3/W14CfjXANIwWCr7llQmXLBoyOq8faz8U2h/aLnBpbI4WzZELfw49Lh9JQVk5
dxVwWQ674UFuyRC4B8QaPqMFdbn8a1CORa5Rqg/dyenxwxgsVCyl2qz+PTLVdCGH
IWO1WW6ZISDJ5YovzMcHM4KBgut1gO6FDtz0DEj2GQC+JpCl8oHyF7E/RQ2E+Nv+
LWb6nCLfp4z3/68zQ2UrcXa1crdGsdEIFJFwV8FUYdmv24TSD+/pClczK57h422v
Ros+Krb7fOTE+YCXqFcZgg8IGupZsw==
=5wbJ
-----END PGP SIGNATURE-----
Merge tag 'spi-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"Along with a lot of driver specific work we've got a couple of core
features here. The bigger one is that we've now got support for
instantiating devices from sysfs similarly to how it's already done
for I2C, this is used with development boards with non-enumerable
expansion headers since SPI devices need to be manually specified. We
also have support for the DQS signal on higher end flash devices.
- Support for instantiating devices from sysfs, useful for
development boards with non-enumerable plugin modules, from
Vishwaroop A.
- Support for DQS in spi-mem, an additional signal used by flash
devices to avoid clock skew from Miquel Raynal.
- Support for more advanced SPI modes on DesignWare controllers from
Sudip Mukherjee.
- Changes from Jisheng Zhang to update to modern methods of
specifying the PM callbacks.
- Fixes for DMA mapping error handling, plus KUnit tests for this,
from Honghui Jiang.
- Substantial cleanup and performance work in the nxp-spi driver.
- Support for Microchip LAN969x, Nuvoton MA35D1 QSPI, Qualcomm
SA8255p and SA8797P, and StarFive JHB100 SFC"
* tag 'spi-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (132 commits)
spi: Add KUnit coverage for DMA mapping error paths
spi: Clear current DMA devices when unmapping a message
spi: Move __spi_unmap_msg() before __spi_map_msg()
spi: Fix DMA mapping ownership on partial map failure
spi: dt-bindings: sun6i: Add compatibles for A733's SPI controllers
spi: ma35d1-qspi: Use the existing update helper
spi: ma35d1-qspi: Add DTR support
spi: ma35d1-qspi: Allow several command bytes
spi: ma35d1-qspi: Move speed setting to bus configuration
spi: ma35d1-qspi: Remove redundant reset operation
spi: dw: Remove shadowed dws in dw_spi_setup()
spi: img-spfi: don't disable runtime PM on DMA deferred probe
spi: mtk-nor: Propagate errors from IRQ request
spi: mtk-nor: Propagate errors from optional IRQ lookup
spi: spi-qpic-snand: Handle Macronix quad read opcode 0x6b
spi: spi-qpic-snand: add quad mode support
spi: spi-qpic-snand: move command mapping helper
spi: hisi-sfc-v3xx: Propagate errors from optional IRQ lookup
spi: meson-spifc: use devm_pm_runtime_set_active_enabled
spi: sprd-adi: Fix probe succeeding without registering the controller
...
|
||
GuoHan Zhao
|
05d32474ab |
tools/virtio: Fix control typo in trace agent comment
Fix a misspelling of "control" in the trace agent controller description. Signed-off-by: GuoHan Zhao <zhaoguohan@kylinos.cn> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-ID: <20260720014506.90012-1-zhaoguohan@kylinos.cn> |
||
|
GuoHan Zhao
|
bce2a966f7 |
tools/virtio: Fix userspace typo in vringh test comment
Fix a misspelling of "userspace" in the vringh test description. Signed-off-by: GuoHan Zhao <zhaoguohan@kylinos.cn> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-ID: <20260720014421.89345-1-zhaoguohan@kylinos.cn> |
||
Yichong Chen
|
b07513e747 |
tools/virtio: Remove unsupported --batch option from vhost_net_test
vhost_net_test has --batch in longopts, but not in help. The parser never handles 'b', so --batch hits assert(0). Remove the unsupported option. Signed-off-by: Yichong Chen <chenyichong@uniontech.com> Acked-by: Eugenio Pérez <eperezma@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-ID: <E091F15D8FBE8F16+20260618100254.513806-1-chenyichong@uniontech.com> |
||
|
Linus Torvalds
|
ccb9331e13 |
- Remove the smp_locks alternatives machinery which was used to patch out lock
prefixes when running a SMP kernel on a uniprocessor machine -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmqD58YACgkQEsHwGGHe VUrzQRAAoaN6wL22NNqknd4axMd1ZDNo7mjwHqwQFH8dctba9nEHtnwhM+G0iqUP LAMpd4rJNClt14uMCSvN0zwx4SAB+/Dsn56ZN22TR74fWLjCBHuATgIzNCte2arF ifwP+qkiZJxixnYHKjE+CkbRPOd3xQr6nskte5/ywbbYoXjwve1GX3Lrf5YJ9mHJ IWZaRYHl5dd/tMlrN+Nv+AU0aK86gROdll6KLWE7LVrcDqLrjmigYOXvrFoUzMzR 4aCSSq3ZkaMUNyCNyJqqAkK17xxxSbZLaSwgx/mpo/7jKeiLHYkbE7SPJFhpSu7R fC3/DqsbqqbkN7yOGJ2amQsqmvNbnVsv7/P3litw8r41S+QYjJLCB9BW3TvRa/Ff obeN52sJCilvCg4dYnaokl17EZ6bOTpapGQlPAFySUvemUDvFfsHFXeBvnPbzFhg 6Mjf6ZPIf28yB/QUuJG6bESUdSodG/PUN5N4330tVuKQSJU0CnBHEWstsN5u9MVO aRecbdiWM69m9CUuwx9d+xoIa89aietaDSO7WvxdJe/psbL2GkO3jhl6BcdNQTi3 7A5M0F0QkOfMgtL8N0Kz6URSgrcnj+e5XKG8AvSQ68vRUFd6OXu82eWGUIT6MUk7 XULB9XeVQ8MkXwO+TDVsL6GkWcfCBy60JMO5ZibDZBRcFpsJfV4= =1kMm -----END PGP SIGNATURE----- Merge tag 'x86_alternatives_for_v7.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 alternatives update from Borislav Petkov: - Remove the smp_locks alternatives machinery which was used to patch out lock prefixes when running a SMP kernel on a uniprocessor machine * tag 'x86_alternatives_for_v7.3_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/alternative: Drop smp_locks glue |
||
|
Linus Torvalds
|
3b4128b9f3 |
Timers and timekeeping core updates:
- Fix a subtly inconsistency in the timekeeping code, which fails to
account for the monotonicity adjustment in ntp_error. For small changes
of the clocksource multiplicator (+/-1) which are typically used by the
NTP PLL this is hardly to observe. But for larger adjustments,
e.g. caused by a direct frequency setting through adjtimex() the
one-time uncompensated offset is significant.
Cure this by adjusting ntp_error with the resulting offset so that the
discrepancy is smoothed away over time
- Make tick length calculations correct in NTP. The timekeeping core
takes the quantisation of the clocksource into account when calculating
the tick length to compensate for the deviation of the nominal
NTP_INTERVAL_LENGTH. While timekeeping gets this right, NTP is not
aware of that, which means it operates on the nominal value and not on
the actual value which is determined by the clock source frequency. The
rounding of a coarse clocksource like the ACPI PM timer results in a
+127 PPM deviation.
Cure this by exposing the deviation to the NTP code so that it can
operate on the same data as the timekeeping core. This is purely kernel
internal. User space still sees the nominal tick lenght via adjtimex().
- The accuracy of the NTP adjustments is fairly approximate as the code
assumes that the invocations are precisely in NTP interval frequency
ticks and the final adjustment can over and under-run.
Cure this by adjusting ntp_error by the intended skew on each tick to
achieve the desired rate.
- Handle the two competing skews of time offset and time adjustment
correctly by calculating the conflict portion between the skews and
adjusting both accordingly.
- A set of updates and improvements for the selftests
- The usual small fixes and improvements all over the place
-----BEGIN PGP SIGNATURE-----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=prJt
-----END PGP SIGNATURE-----
Merge tag 'timers-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer and timekeeping core updates from Thomas Gleixner:
- Fix a subtly inconsistency in the timekeeping code, which fails to
account for the monotonicity adjustment in ntp_error.
For small changes of the clocksource multiplicator (+/-1) which are
typically used by the NTP PLL this is hard to observe. But for larger
adjustments, e.g. caused by a direct frequency setting through
adjtimex() the one-time uncompensated offset is significant.
Cure this by adjusting ntp_error with the resulting offset so that
the discrepancy is smoothed away over time
- Make tick length calculations correct in NTP.
The timekeeping core takes the quantisation of the clocksource into
account when calculating the tick length to compensate for the
deviation of the nominal NTP_INTERVAL_LENGTH.
While timekeeping gets this right, NTP is not aware of that, which
means it operates on the nominal value and not on the actual value
which is determined by the clock source frequency. The rounding of a
coarse clocksource like the ACPI PM timer results in a +127 PPM
deviation.
Cure this by exposing the deviation to the NTP code so that it can
operate on the same data as the timekeeping core. This is purely
kernel internal. User space still sees the nominal tick lenght via
adjtimex().
- The accuracy of the NTP adjustments is fairly approximate as the code
assumes that the invocations are precisely in NTP interval frequency
ticks and the final adjustment can over and under-run.
Cure this by adjusting ntp_error by the intended skew on each tick to
achieve the desired rate.
- Handle the two competing skews of time offset and time adjustment
correctly by calculating the conflict portion between the skews and
adjusting both accordingly.
- A set of updates and improvements for the selftests
- The usual small fixes and improvements all over the place
* tag 'timers-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (58 commits)
selftests: timers: nsleep-lat: Check all calls to clock_nanosleep() and clock_gettime()
selftests: timers: nsleep-lat: Reuse kselftest error numbers
selftests: timers: nsleep-lat: Explicitly list the tested clocks
selftests: timers: nsleep-lat: Use NSEC_PER_MSEC define for unreasonable latency
selftests: timers: nanosleep: Report each test separately
selftests: timers: nanosleep: Explicitly handle timer_delete() failure
selftests: timers: nanosleep: Move all single clock tests out of the loop in main()
selftests: timers: nanosleep: Reuse kselftest error numbers
selftests: timers: nanosleep: Explicitly list the tested clocks
selftests: timers: nanosleep: Drop output alignment
selftests: timers: Use clock_name() and constants from clock-helpers.h
selftests: Add clock-helpers.h
timer_list: Use ktime_t over nanoseconds
timer_list: Use standard 'long long' format placeholders
hrtimer: Add a lockdep assertion to hrtimer_update_base()
timekeeping: Use u32 for clock_was_set_seq
timekeeping: Rename clockid_aux_valid() to clockid_is_aux_clock()
hrtimer: Account nr_retries on recovered interrupt retries
timers/itimer: Zero-init old itimerval before copy to userspace
nohz: Replace dead select with choice default
...
|
||
|
Linus Torvalds
|
b844715e8a |
Futex updates:
- A set of improvements to various futex self tests
- Conversion to the selftest harness
- Provide and use thread creation and synchronization helpers to reduce
the dependency on delays, which tend to fail on loaded test systems
- New tests for validating owner exit scenarios for robust and PI futexes
- Runtime detect supported features and skip the tests if the kernel
has no support
- A few minor fixes
-----BEGIN PGP SIGNATURE-----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=6VmJ
-----END PGP SIGNATURE-----
Merge tag 'locking-futex-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex updates from Thomas Gleixner:
- Improvements to various futex self tests:
- Conversion to the selftest harness
- Provide and use thread creation and synchronization helpers to
reduce the dependency on delays, which tend to fail on loaded test
systems
- New tests for validating owner exit scenarios for robust and PI
futexes
- Runtime detect supported features and skip the tests if the kernel
has no support
- A few minor fixes
* tag 'locking-futex-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
selftests/futex: Give circular-list nodes static storage
selftests/futex: Use thread synchronization helpers instead of usleep()
selftests/futex: Provide thread creation and synchronization helpers
selftests/futex: Dynamically skip unsupported tests
selftests/futex: Add FUTEX_LOCK_PI owner-exiting coverage
selftests/futex: Migrate robust_list to harness
selftests/futex: Migrate futex_priv_hash to harness
selftests/futex: Migrate futex_numa_mpol to harness
selftests/futex: Migrate futex_requeue_pi_signal_restart to harness
selftests/futex: Migrate futex_requeue_pi_mismatched_ops to harness
selftests/futex: Migrate futex_requeue_pi to harness
selftests/futex: Migrate futex_requeue to harness
selftests/futex: Migrate futex_wait_uninitialized_heap to harness
selftests/futex: Migrate futex_wait_private_mapped_file to harness
selftests/futex: Migrate futex_wait to harness
selftests/futex: Correct validation logic in waitv
selftests/futex: Migrate functional tests to harness
selftests/futex: Remove static keyword from 'head'
futex: Remove unnecessary NULL check before kvfree()
selftests/rseq: Replace glibc-specific __GNUC_PREREQ with portable check
|
||
|
Linus Torvalds
|
6138016752 |
Two trivial updates for RSEQ:
- Add the recently added new test binaries to .gitignore
- Fix a trivial typo in a comment.
-----BEGIN PGP SIGNATURE-----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=FSxg
-----END PGP SIGNATURE-----
Merge tag 'core-rseq-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull rseq updates from Thomas Gleixner:
"Two trivial updates for RSEQ:
- Add the recently added new test binaries to .gitignore
- Fix a trivial typo in a comment"
* tag 'core-rseq-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
selftests/rseq: Add missing test binaries to .gitignore
selftests/rseq: Fix spelling of accommodate
|
||
|
Linus Torvalds
|
3424d8c18a |
Generic entry code updates:
- Make syscall user dispatching configurable
Not all architectures can makes use of syscall user dispatching. Allow
them to disable the feature completely.
- Consolidate stack randomization for the generic entry code and the
architectures using it.
Stack randomization on syscall entry was sprinkled throughout the
architecture specific low level entry code and in some cases at the
wrong points, e.g. before establishing state, which violates the
non-instrumentable constraints of that code.
Clean this up by integrating stack randomization into the generic entry
code helpers so that it is invoked at the earliest possible point right
after establishing state and converting all generic entry code using
architecture over.
- Clean up the syscall number handling in the generic entry code. It
works correctly for architectures which have a separate return value
storage in pt_regs, but fails to distinguish the case where user space
handed in -1 as syscall number from the case where the entry code
rejects it by returning -1 to the callers. Aside of that the return
value functionality of those interfaces is not really intuitive.
Fix this by separating the decision to reject a syscall (user dispatch,
ptrace, seccomp ...) from the potential modification of the syscall
number through these mechanisms.
This solves most of the problems for architectures which do not have a
separate return value storage in pt_regs except for the case where a
tracepoint has a BPF script or a probe attached which overwrite both
the syscall number and the return value. But that's a problem which
cannot be solved in the generic code, that only can be addressed by
separating the storage model in the affected architectures.
-----BEGIN PGP SIGNATURE-----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=XUd9
-----END PGP SIGNATURE-----
Merge tag 'core-entry-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull generic entry code updates from Thomas Gleixner:
- Make syscall user dispatching configurable
Not all architectures can makes use of syscall user dispatching.
Allow them to disable the feature completely.
- Consolidate stack randomization for the generic entry code and the
architectures using it.
Stack randomization on syscall entry was sprinkled throughout the
architecture specific low level entry code and in some cases at the
wrong points, e.g. before establishing state, which violates the
non-instrumentable constraints of that code.
Clean this up by integrating stack randomization into the generic
entry code helpers so that it is invoked at the earliest possible
point right after establishing state and converting all generic entry
code using architecture over.
- Clean up the syscall number handling in the generic entry code. It
works correctly for architectures which have a separate return value
storage in pt_regs, but fails to distinguish the case where user
space handed in -1 as syscall number from the case where the entry
code rejects it by returning -1 to the callers. Aside of that the
return value functionality of those interfaces is not really
intuitive.
Fix this by separating the decision to reject a syscall (user
dispatch, ptrace, seccomp ...) from the potential modification of the
syscall number through these mechanisms.
This solves most of the problems for architectures which do not have
a separate return value storage in pt_regs except for the case where
a tracepoint has a BPF script or a probe attached which overwrite
both the syscall number and the return value. But that's a problem
which cannot be solved in the generic code, that only can be
addressed by separating the storage model in the affected
architectures.
* tag 'core-entry-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
entry, treewide: Make syscall_enter_from_user_mode[_work]() indicate syscall execution
entry: Make return type of syscall_trace_enter() bool
entry: Rework trace_syscall_enter()
entry: Rework syscall_audit_enter()
syscall_user_dispatch: Introduce ARCH_SUPPORTS_SYSCALL_USER_DISPATCH
entry: Fix seccomp bypass after ptrace with TSYNC
x86/entry: Simplify the syscall number logic
x86/entry: Get rid of the sys_ni_syscall() indirection
x86/entry: Make syscall functions static
ptrace, treewide: Rename ptrace_report_syscall_entry() to ptrace_report_syscall_permit_entry()
seccomp, treewide: Rename and convert __secure_computing() to return boolean
entry: Use syscall number instead of rereading it
entry: Remove syscall_enter_from_user_mode()
x86/syscall: Use [syscall_]enter_from_user_mode_randomize_stack()
s390/syscall: Use enter_from_user_mode_randomize_stack()
riscv/syscall: Use syscall_enter_from_user_mode_randomize_stack()
powerpc/syscall: Use syscall_enter_from_user_mode_randomize_stack()
loongarch/syscall: Use syscall_enter_from_user_mode_randomize_stack()
entry: Provide [syscall_]enter_from_user_mode_randomize_stack()
randomize_kstack: Provide add_random_kstack_offset_irqsoff()
...
|
||
Besar Wicaksono
|
9453bc6a69 |
perf vendor events arm64: Fix Tegra410 Olympus event 0x0197
The name and description for NVIDIA Tegra410 Olympus implementation-defined
event 0x0197 incorrectly indicate a TXREQ limit between one quarter and
one half. Correct them to describe a TXREQ limit below one half.
Fixes:
|
||
Saurav Sachidanand
|
2d85e13c55 |
perf vendor events arm64: fix swapped MetricGroup for Tegra410 L1 prefetcher metrics
The L1D prefetcher metrics (l1d_cache_rw_miss_ratio, l1d_demand_accesses,
etc.) were incorrectly assigned to MetricGroup "L1I_Prefetcher_Effectiveness"
and vice versa. This causes 'perf stat --metric-group L1D_Prefetcher_Effectiveness'
to display L1I metrics, which is misleading.
Swap the MetricGroup assignments so L1D metrics are in the L1D group and
L1I metrics are in the L1I group.
Fixes:
|
||
|
Linus Torvalds
|
dfa35434d7 |
Locking updates for v7.3:
Futexes:
- Use runtime constants for futex_hash computation
(K Prateek Nayak, Peter Zijlstra)
- Optimise the size check get_futex_key() (Sebastian Andrzej Siewior)
- Avoid private hash use-after-free on final put (Felix Hoffmann)
- Tell kmemleak we're not leaking __futex_queues (Peter Zijlstra)
Rust integration updates:
- Implement refcounted interrupt disable and SpinLockIrq for Rust
(Boqun Feng, Heiko Carstens, Joel Fernandes, Lyude Paul)
- Rust sync: add helpers for mb, dma_mb and friends;
add generic memory barriers and use LKMM atomics
instead of Rust atomics in the revocable code (Gary Guo)
- Add abstraction and integrate synchronize_rcu() (Philipp Stanner)
Lock debugging:
- Add qspinlock contended_release tracepoint
(Dmitry Ilvokhin, Peter Zijlstra)
- Enable the printing of held locks of remote running tasks and print
task CPU (Ingo Molnar)
- percpu-rwsem: Annotate intentional data race in readers_active_check()
(Sun Shaojie)
Misc fixes and updates by Boqun Feng, Peter Zijlstra, Fangrui Song,
Naveen Kumar Chaudhary and Thomas Huth.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=slqC
-----END PGP SIGNATURE-----
Merge tag 'locking-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
"Futexes:
- Use runtime constants for futex_hash computation (K Prateek Nayak,
Peter Zijlstra)
- Optimise the size check get_futex_key() (Sebastian Andrzej Siewior)
- Avoid private hash use-after-free on final put (Felix Hoffmann)
- Tell kmemleak we're not leaking __futex_queues (Peter Zijlstra)
Rust integration updates:
- Implement refcounted interrupt disable and SpinLockIrq for Rust
(Boqun Feng, Heiko Carstens, Joel Fernandes, Lyude Paul)
- Rust sync: add helpers for mb, dma_mb and friends; add generic
memory barriers and use LKMM atomics instead of Rust atomics in the
revocable code (Gary Guo)
- Add abstraction and integrate synchronize_rcu() (Philipp Stanner)
Lock debugging:
- Add qspinlock contended_release tracepoint (Dmitry Ilvokhin, Peter
Zijlstra)
- Enable the printing of held locks of remote running tasks and print
task CPU (Ingo Molnar)
- percpu-rwsem: Annotate intentional data race in readers_active_check()
(Sun Shaojie)
Misc fixes and updates by Boqun Feng, Peter Zijlstra, Fangrui Song,
Naveen Kumar Chaudhary and Thomas Huth"
* tag 'locking-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits)
rust: sync: Introduce SpinLockIrq::lock_with() and friends
rust: sync: Add SpinLockIrq
rust: sync: Use super::* in spinlock.rs
rust: helper: Add spin_{un,}lock_irq_{enable,disable}() helpers
rust: Introduce interrupt module
s390/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
arm64: sched/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
preempt: Introduce HAS_SEPARATE_PREEMPT_RESCHED_BITS
sched: Avoid signed comparison of preempt_count() in __cant_migrate()
sched: Remove the unused preempt_offset parameter of __cant_sleep()
locking: Switch to _irq_{disable,enable}() variants in cleanup guards
irq: Add KUnit test for refcounted interrupt enable/disable
irq,spin_lock: Add counted interrupt disabling/enabling
openrisc: Include <linux/cpumask.h> in smp.h
preempt: Introduce __preempt_count_{sub,add}_return()
preempt: Introduce HARDIRQ_DISABLE_BITS
preempt: Track NMI nesting to separate per-CPU counter
futex: Tell kmemleak we're not leaking __futex_queues
x86/paravirt: Trace contended_release on unlock
tracing/lock: Use TRACE_EVENT_FN() for contended_release
...
|
||
|
Linus Torvalds
|
8915457146 |
Performance events updates for v7.3:
uprobes updates:
- Patch series to fix a category of bugs with optimized uprobes that
can clobber the redzone area with call instruction storing return
address on stack where user code may keep temporary data without
adjusting RSP. Fix this by moving the optimized uprobes on top of
10-bytes NOP instruction, so we can squeeze another instruction to
escape the redzone area before doing the call.
(Jiri Olsa, Andrii Nakryiko)
- Switch uretprobes_srcu to SRCU-fast-updown, to improve performance
(Puranjay Mohan)
Intel CPU PMU driver updates:
- Optimize ACR handling in match_prev_assignment() (Dapeng Mi)
- Patch series to fix various PMU driver bugs and data leaks (Dapeng Mi)
- Fix Intel PT stop/start with no update (Adrian Hunter)
Intel uncore PMU driver updates:
- Series to fix various uncore PMU setup robustness bugs (Zide Chen)
AMD uncore PMU driver updates:
- Add group validation (Sandipan Das)
Misc fixes and updates by Dapeng Mi, Randy Dunlap and Zide Chen.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=V8n9
-----END PGP SIGNATURE-----
Merge tag 'perf-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull performance events updates from Ingo Molnar:
"uprobes updates:
- Fix a category of bugs with optimized uprobes that can clobber the
redzone area with call instruction storing return address on stack
where user code may keep temporary data without adjusting RSP.
Fix this by moving the optimized uprobes on top of 10-bytes NOP
instruction, so we can squeeze another instruction to escape the
redzone area before doing the call (Jiri Olsa, Andrii Nakryiko)
- Switch uretprobes_srcu to SRCU-fast-updown, to improve performance
(Puranjay Mohan)
Intel CPU PMU driver updates:
- Optimize ACR handling in match_prev_assignment() (Dapeng Mi)
- Fix various PMU driver bugs and data leaks (Dapeng Mi)
- Fix Intel PT stop/start with no update (Adrian Hunter)
Intel uncore PMU driver updates:
- Fix various uncore PMU setup robustness bugs (Zide Chen)
AMD uncore PMU driver updates:
- Add group validation (Sandipan Das)
.. and misc fixes and updates by Dapeng Mi, Randy Dunlap and Zide Chen"
* tag 'perf-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
perf/x86: Optimize ACR handling in match_prev_assignment()
perf/x86/intel: Fix intel_cap handling on hybrid PMUs
perf/x86: Remove stale fixed counter helper and fix hybrid PMU access
perf/x86/intel: Unwind cpuc state if PEBS buffer setup fails
perf/x86: Guard intel_pmu_cpu_dead() against invalid hybrid PMU casts
perf/x86: Free hybrid state on PMU init failure
perf/x86: Unregister PMI handler on PMU init failure
perf/x86/intel/pt: Fix stop/start with no update
perf/x86/intel/pt: Use bitwise access for PERF_HES_STOPPED
perf/x86/intel/pt: Factor out pt_config_enable()
uprobes: Switch uretprobes_srcu to SRCU-fast-updown
srcu: Add lock guard for srcu_fast_updown flavor
perf/x86/intel/pt: Drop kernel-doc for deleted struct members
perf/x86/amd/uncore: Add group validation
selftests/bpf: Add tests for forked/cloned optimized uprobes
selftests/bpf: Add tests for uprobe nop10 red zone clobbering
selftests/bpf: Add reattach tests for uprobe syscall
selftests/bpf: Change uprobe/usdt trigger bench code to use nop10
selftests/bpf: Change uprobe syscall tests to use nop10
selftests/bpf: Emit nop,nop10 instructions combo for x86_64 arch
...
|
||
|
Linus Torvalds
|
a0acd94e38 |
Objtool updates for v7.3:
- Fix various klp-build bugs reported by Joe Lawrence
(Josh Poimboeuf, Joe Lawrence)
- Misc fixes and cleanups (Puranjay Mohan, Thomas Huth and Ingo Molnar).
Signed-off-by: Ingo Molnar <mingo@kernel.org>
-----BEGIN PGP SIGNATURE-----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=4+gg
-----END PGP SIGNATURE-----
Merge tag 'objtool-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool updates from Ingo Molnar:
- Fix various klp-build bugs reported by Joe Lawrence (Josh Poimboeuf,
Joe Lawrence)
- Misc fixes and cleanups (Puranjay Mohan, Thomas Huth and Ingo Molnar)
* tag 'objtool-core-2026-08-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool/klp: Fix vmlinux klp relocations for EXPORT_SYMBOL_FOR_MODULES()
objtool/klp: Fix .kcfi_traps special section extraction
objtool/klp: Fix vmlinux .klp.symid link error for .exitcall.exit symbols
objtool/klp: Fix line numbers in Module.symvers parse errors
objtool/klp: Fix relocations for EXPORT_SYMBOL_FOR_MODULES() symbols
objtool/klp: Allow new references to module exports
objtool/klp: Don't match local symbols against exports
objtool/klp: Fix cross-module klp relocation section naming
objtool/klp: Explicitly disallow patching or referencing init code/data
objtool/klp: Ignore replacement offset of empty x86 alternatives
objtool/klp: Fix size of empty special section entries
objtool/klp: Fix vmlinux .klp.symid link error for .no_trim_symbol symbols
objtool/headers: Sync tools/include/linux/objtool_types.h with include/linux/objtool_types.h
objtool: Replace __ASSEMBLY__ with __ASSEMBLER__ in header files
objtool/klp: Fix symbol resolution for duplicate data symbols
objtool/klp: Add .klp.symid for sympos disambiguation
objtool/klp: Skip hidden directories when finding objects
objtool/klp: Fix false module dependencies caused by dead relocs
objtool/klp: Normalize Module.symvers paths to module names
objtool/klp: Fix module name normalization for paths with dots
|
||
|
Linus Torvalds
|
85cdaca697 |
arm64 updates for 7.3
ACPI:
- Combine reads of AMU counters into a single FFH feedback counter op.
Confidential computing:
- Fix smp_processor_id() in preemptible context when retrieving an
attestation token inside a realm.
- Convert pKVM over to a "CC platform".
- Clean-up our SWIOTLB configuration in preparation for reworking the
handling of encrypted/decryped DMA buffers in the dma-mapping tree.
CPU errata handling:
- Work around broken device memory ordering on NVIDIA Olympus cores.
- Fix broken 'nospectre_bhb' command-line option.
- Select the idle loop backend instruction on the command-line.
CPU features:
- Replace our BBML2-noabort feature with the new architectural BBML3
feature.
- Disable in-kernel BTI for recent versions of Clang due to issues with
livepatch that are still being investigated.
- Clean-up documentation describing which ID register fields are exposed
to userspace.
Interrupts:
- Preliminary work towards supporting FEAT_NMI, which cleans up our
IRQ entry code and fixes some latent issues with pseudo-NMI.
- Support for an SDEI backend to trigger an NMI backtrace.
Memory management:
- Treat all devices as coherent when CLIDR_EL1.LoC == 0.
- Fix no-map handling of sub-page-sized regions.
- Second attempt at unmapping the linear aliases of the kernel data and
bss sections.
- Fix EFI runtime calls when software-PAN is enabled.
Miscellaneous:
- Add Mark Rutland as a reviewer!
- Tidy-up our futex cmpxchg logic when using the new LSUI instructions.
- Drop the requirement on DYNAMIC_FTRACE_WITH_CALL_OPS when selecting
HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS.
- Fix a false-positive KCSCAN splat in the delay loop.
- Use a portable typedef for 128-bit scalar types in our UAPI headers.
- Non-critical fixes for Sashiko reports all over.
MPAM:
- Hook MPAM memory bandwidth counters into resctrl's counter assignment
interface.
- Fix a quirk in the MPAM bandwidth counting on Nvidia T241 so that it
also applies to 63 bit counters.
Perf:
- Workarounds for hardware issues in the CMN-S3 PMU (Graviton 5) and CPU
PMU (NVIDIA Olympus again!)
- Add support for the DDR PMU on Marvell CN20K SoCs.
- Add support for Picoheart implementations of the DCW PCIe PMU.
- Add support for Channel/Rank/Bank filtering in the CXL PMU driver.
- Add support for 64-bit counters in the CSPMU device.
- Add support for revision 2 of the CMN S3 PMU.
Ptrace:
- Fix a decade-old bug in our handling of seccomp and tracing on syscall
entry.
- Fix regset handling for inactive SVE and SSVE registers.
Selftests
- Add some tests for the decade-old bug that we just tried to fix in our
syscall entry path.
- Fix SVE test crash on SME-only CPUs.
-----BEGIN PGP SIGNATURE-----
iQFEBAABCgAuFiEEPxTL6PPUbjXGY88ct6xw3ITBYzQFAmp+9HkQHHdpbGxAa2Vy
bmVsLm9yZwAKCRC3rHDchMFjNEjXB/4y8KueLwgMOcpjzJom6ujmE2Ab7IOI+I5v
rYQkGDdHLcQd0WW9gtFXoxlq/EUcWuVCGAdOF3PxkUmVhHJC45ZNSmBGS9/LbU3f
AqeFskSE46D2gOdMXSscwGAQ+OiQ6WlSSgqy2dU1ZfTXy7ioxydWVUtvmqMmB85O
ctN9Ocr3zAZuptuyLJurCJNnyCuzd55SIuy+WKU6NIpWseiIqiLEb/6HFbWcw6iV
vVZjD/Je5my8Gfjuu12z7kJ6o5jwGNpI8U7Z0b68ESUG3b5fh9E2zVLIq0fvn83B
rjPqg/Wj2TVGag/+yZgafLwQ/7111hhkdf1bPBitClx4GxOoZEjG
=Iypw
-----END PGP SIGNATURE-----
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 updates from Will Deacon:
"There's a reasonable amount of stuff here, including a bunch of
updates to the perf PMU drivers and some MPAM updates to expose the
memory bandwidth counters via resctrl.
On the architecture side, some highlights include support for BBML3
and steps towards support for an architectural NMI solution, all
wrapped up in a web of fixes for latent issues identified by Sashiko.
ACPI:
- Combine reads of AMU counters into a single FFH feedback counter op
Confidential computing:
- Fix smp_processor_id() in preemptible context when retrieving an
attestation token inside a realm
- Convert pKVM over to a "CC platform"
- Clean-up our SWIOTLB configuration in preparation for reworking the
handling of encrypted/decryped DMA buffers in the dma-mapping tree
CPU errata handling:
- Work around broken device memory ordering on NVIDIA Olympus cores
- Fix broken 'nospectre_bhb' command-line option
- Select the idle loop backend instruction on the command-line
CPU features:
- Replace our BBML2-noabort feature with the new architectural BBML3
feature
- Disable in-kernel BTI for recent versions of Clang due to issues
with livepatch that are still being investigated
- Clean-up documentation describing which ID register fields are
exposed to userspace
Interrupts:
- Preliminary work towards supporting FEAT_NMI, which cleans up our
IRQ entry code and fixes some latent issues with pseudo-NMI
- Support for an SDEI backend to trigger an NMI backtrace
Memory management:
- Treat all devices as coherent when CLIDR_EL1.LoC == 0
- Fix no-map handling of sub-page-sized regions
- Second attempt at unmapping the linear aliases of the kernel data
and bss sections
- Fix EFI runtime calls when software-PAN is enabled
Miscellaneous:
- Add Mark Rutland as a reviewer!
- Tidy-up our futex cmpxchg logic when using the new LSUI
instructions
- Drop the requirement on DYNAMIC_FTRACE_WITH_CALL_OPS when
selecting HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS
- Fix a false-positive KCSCAN splat in the delay loop
- Use a portable typedef for 128-bit scalar types in our UAPI headers
- Non-critical fixes for Sashiko reports all over
MPAM:
- Hook MPAM memory bandwidth counters into resctrl's counter
assignment interface
- Fix a quirk in the MPAM bandwidth counting on Nvidia T241 so that
it also applies to 63 bit counters
Perf:
- Workarounds for hardware issues in the CMN-S3 PMU (Graviton 5) and
CPU PMU (NVIDIA Olympus again!)
- Add support for the DDR PMU on Marvell CN20K SoCs
- Add support for Picoheart implementations of the DCW PCIe PMU
- Add support for Channel/Rank/Bank filtering in the CXL PMU driver
- Add support for 64-bit counters in the CSPMU device
- Add support for revision 2 of the CMN S3 PMU
Ptrace:
- Fix a decade-old bug in our handling of seccomp and tracing on
syscall entry
- Fix regset handling for inactive SVE and SSVE registers
Selftests
- Add some tests for the decade-old bug that we just tried to fix in
our syscall entry path
- Fix SVE test crash on SME-only CPUs"
* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (95 commits)
arm64/efi: Avoid voluntary preemption with efi_mm installed
arm64: bti: Disable in-kernel BTI with recent versions of Clang
arm64: entry: Avoid unnecessary local_irq_disable() on kernel exit
irqchip/gic-v3: make the unmasking of pseudo-NMIs explicit when handling IRQs
arm64: Disable KCSAN instrumentation in delay.o
arm_mpam: Disable driver unbind to avoid UAF
arm_mpam: Fix a NULL pointer dereference on unbinding after an error interrupt
perf: arm_pmuv3: Zero initialize hw_id branch stack field
arm64: mm: Unmap kernel data/bss entirely from the linear map
iommu/arm-smmu-v3-sva: Use system_supports_bbml3() to detect CPU feature
perf/arm-cmn: Support CMN S3 r2
perf/arm-cmn: Plumb in new filter types
perf/arm-cmn: Refactor event filter data
perf/arm-cmn: Refactor event filter programming
perf/arm-cmn: Rename filter variables for clarity
arm64: mm: fix accidental linear mapping of no-map reserved memory
tools: Ensure tools copy of linux/filter.h exports the UAPI
kselftest/arm64: Fix abi test compilation errors
arch: arm64: add early_param idle=<wfi|yield|nop>
arm64: entry: mask DAIF before returning from C EL1 handlers
...
|
||
|
Linus Torvalds
|
d24f5cdbef |
Rust changes for v7.3
Toolchain and infrastructure:
- Warn when using 'bindgen' < 0.72.1 with 'libclang' >= 22, since that
combination may fail to build. It includes a probe for the bug in
case 'bindgen' happens to be patched, and tests.
In parallel, Nathan updated the instructions for the kernel.org
LLVM+Rust toolchains so that the latest version of 'bindgen' is
installed, which should avoid some of these situations.
- Support testing 'rust_is_available.sh' with 'bash' as '/bin/sh'.
- Fix an objtool warning by adding one more 'noreturn' function for
Rust 1.99.0 (expected 2026-10-01).
- Fix build error in the 'rusttest' target due to ambiguity when the
'rustc-dev' component is installed, which was uncovered by the work
to support Rust's GCC backend ('rustc_codegen_gcc').
- Fix future Clang warnings in the upcoming powerpc support due to
macro redefinitions in the UAPI helper header by including the
arch-aware 'ioctl.h' header.
'kernel' crate:
- Rework module ownership support:
- Move the module-related types into a new 'module' module and make
the 'THIS_MODULE' pointer a constant of 'ModuleMetadata' so that
modules can provide the pointer in const contexts, and add a
'this_module' 'const fn' to retrieve it.
This was enabled by upstream Rust's work on the 'const_mut_refs'
and 'const_refs_to_static' features which were stabilized back
in Rust 1.83.0.
- Teach '#[vtable]' to associate implementations with their owning
module, defaulting to the local one, including fallbacks for
doctests, uses within the 'kernel' crate (like upcoming KUnit
'#[test]'s for DRM) and 'rusttest'.
- Set 'fops.owner' from the module pointer for DRM and miscdevice.
- Migrate Rust Binder and configfs away from the old 'THIS_MODULE'
'static' and finally remove it from the 'module!' macro.
- 'num' module:
- Add the new 'casts' module for lossless integer conversions.
Rust's 'core' library's 'From' implementations do not cover
conversions that are not portable or future-proof. However, the
kernel supports a narrower set of architectures, which makes it
helpful to provide more infallible conversions, instead of having
developers use 'as' casts, which carry the risk of silently
losing data.
This goes along with previous work we did to avoid casts in Rust
kernel code since they are more powerful than needed.
Thus, provide safe 'const' conversion functions (e.g.
'usize_as_u64' and 'u64_into_u8'), as well as the 'FromSafeCast'
and 'IntoSafeCast' extension traits that provide conversions that
are known to be lossless in the kernel, and an 'arch' submodule
defining conversions that are known to be lossless on particular
architectures (e.g. 64-bit platforms). For instance:
// Conversion in const context.
const USIZED_CONST: usize = u8_as_usize(255u8);
// Non-const conversions.
let a = u64::from_safe_cast(4096usize);
let b: u64 = 4096usize.into_safe_cast();
- Add 'Bounded::shr_exact' method in the vein of 'try_shrink' which
shifts a bounded right only if it loses no set bits.
- Fix unsoundness issue in the 'Bounded::shr' method by rejecting,
at compile-time, shifts of at least the type's bit width.
- 'fmt' module:
- Route '{:p}' raw pointer formatting through the kernel's hashed
'%p' format to prevent address leaks, including support for width
and padding. Include tests for both 'no_hash_pointers' case and
the default (hashed) one.
- Fix the '{:p}' forwarding implementation, which could print the
address of a temporary stack variable.
- 'time' module:
- Make 'Delta' generic over its time unit, with a default unit of
nanoseconds ('Nsec'), preserving the existing behavior. Then, add
a 'Jiffy' time unit.
- Add the 'Delta::as_millis_ceil()' method.
- Fix 'as_micros_ceil()' rounding near 'i64::MAX', which could
yield a result one microsecond too small.
- 'sync' module:
- Implement 'ForeignOwnable' for 'ARef<T>', allowing C code to own
an 'ARef<T>'.
- Add a safe abstraction for 'rcu_barrier()'.
- 'error' module: add all of the remaining error codes, except the
deprecated compatibility aliases.
- 'bug' module:
- Fix build error on UML in 'warn_on!' for callers from within
the 'kernel' crate.
- Fix future 'dead_code' warning on arm and loongarch64 and under
'CONFIG_BUG=n' in 'warn_on!', which would trigger with the
upcoming SRCU abstractions.
- Fix future build error in 'rusttest' on cross-compilation cases,
which would trigger when 'warn_on!' has callers inside the
'kernel' crate.
- 'bitfield' module: fix build error for the upcoming support for
Rust's GCC backend ('rustc_codegen_gcc') by always inlining a couple
conversions used in tests.
'pin-init' crate:
- User-visible changes:
- Merge the '__pinned_init' and '__init' methods and make 'Init'
a marker trait.
- Introduce public APIs 'raw_init' and 'raw_try_init' to prevent
users from needing to invoke the internal
'__pinned_init'/'__init' methods.
- Emit errors for duplicate '#[pin]' attributes.
- Link 'Zeroable::zeroed' and 'pin_init::zeroed' in documentation.
- Other changes:
- Fix unwind safety issues.
- Clean up lint 'allow' and 'expect's.
- Overhaul '#[cfg]' handling to pave the way for tuple structs and
self-referential structs.
- Mark many functions as '#[inline]' for better codegen with '-C
opt-level=s' ('CC_OPTIMIZE_FOR_SIZE').
'MAINTAINERS':
- Update 'MODULE SUPPORT' to cover the new 'module' module.
And some other fixes, cleanups and improvements.
-----BEGIN PGP SIGNATURE-----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=4uyP
-----END PGP SIGNATURE-----
Merge tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull Rust updates from Miguel Ojeda:
"Toolchain and infrastructure:
- Warn when using 'bindgen' < 0.72.1 with 'libclang' >= 22, since
that combination may fail to build. It includes a probe for the bug
in case 'bindgen' happens to be patched, and tests
In parallel, Nathan updated the instructions for the kernel.org
LLVM+Rust toolchains so that the latest version of 'bindgen' is
installed, which should avoid some of these situations
- Support testing 'rust_is_available.sh' with 'bash' as '/bin/sh'
- Fix an objtool warning by adding one more 'noreturn' function for
Rust 1.99.0 (expected 2026-10-01)
- Fix build error in the 'rusttest' target due to ambiguity when the
'rustc-dev' component is installed, which was uncovered by the work
to support Rust's GCC backend ('rustc_codegen_gcc')
- Fix future Clang warnings in the upcoming powerpc support due to
macro redefinitions in the UAPI helper header by including the
arch-aware 'ioctl.h' header
'kernel' crate:
- Rework module ownership support:
- Move the module-related types into a new 'module' module and
make the 'THIS_MODULE' pointer a constant of 'ModuleMetadata'
so that modules can provide the pointer in const contexts, and
add a 'this_module' 'const fn' to retrieve it
This was enabled by upstream Rust's work on the 'const_mut_refs'
and 'const_refs_to_static' features which were stabilized back
in Rust 1.83.0
- Teach '#[vtable]' to associate implementations with their
owning module, defaulting to the local one, including fallbacks
for doctests, uses within the 'kernel' crate (like upcoming
KUnit '#[test]'s for DRM) and 'rusttest'
- Set 'fops.owner' from the module pointer for DRM and
miscdevice
- Migrate Rust Binder and configfs away from the old
'THIS_MODULE' 'static' and finally remove it from the 'module!'
macro
- 'num' module:
- Add the new 'casts' module for lossless integer conversions
Rust's 'core' library's 'From' implementations do not cover
conversions that are not portable or future-proof. However, the
kernel supports a narrower set of architectures, which makes it
helpful to provide more infallible conversions, instead of
having developers use 'as' casts, which carry the risk of
silently losing data
This goes along with previous work we did to avoid casts in
Rust kernel code since they are more powerful than needed
Thus, provide safe 'const' conversion functions (e.g.
'usize_as_u64' and 'u64_into_u8'), as well as the
'FromSafeCast' and 'IntoSafeCast' extension traits that provide
conversions that are known to be lossless in the kernel, and an
'arch' submodule defining conversions that are known to be
lossless on particular architectures (e.g. 64-bit platforms).
For instance:
// Conversion in const context.
const USIZED_CONST: usize = u8_as_usize(255u8);
// Non-const conversions.
let a = u64::from_safe_cast(4096usize);
let b: u64 = 4096usize.into_safe_cast();
- Add 'Bounded::shr_exact' method in the vein of 'try_shrink'
which shifts a bounded right only if it loses no set bits
- Fix unsoundness issue in the 'Bounded::shr' method by
rejecting, at compile-time, shifts of at least the type's bit
width
- 'fmt' module:
- Route '{:p}' raw pointer formatting through the kernel's hashed
'%p' format to prevent address leaks, including support for
width and padding. Include tests for both 'no_hash_pointers'
case and the default (hashed) one
- Fix the '{:p}' forwarding implementation, which could print the
address of a temporary stack variable
- 'time' module:
- Make 'Delta' generic over its time unit, with a default unit of
nanoseconds ('Nsec'), preserving the existing behavior. Then,
add a 'Jiffy' time unit
- Add the 'Delta::as_millis_ceil()' method
- Fix 'as_micros_ceil()' rounding near 'i64::MAX', which could
yield a result one microsecond too small
- 'sync' module:
- Implement 'ForeignOwnable' for 'ARef<T>', allowing C code to
own an 'ARef<T>'
- Add a safe abstraction for 'rcu_barrier()'
- 'error' module: add all of the remaining error codes, except the
deprecated compatibility aliases
- 'bug' module:
- Fix build error on UML in 'warn_on!' for callers from within
the 'kernel' crate
- Fix future 'dead_code' warning on arm and loongarch64 and under
'CONFIG_BUG=n' in 'warn_on!', which would trigger with the
upcoming SRCU abstractions
- Fix future build error in 'rusttest' on cross-compilation
cases, which would trigger when 'warn_on!' has callers inside
the 'kernel' crate
- 'bitfield' module: fix build error for the upcoming support for
Rust's GCC backend ('rustc_codegen_gcc') by always inlining a
couple conversions used in tests
'pin-init' crate:
- User-visible changes:
- Merge the '__pinned_init' and '__init' methods and make 'Init'
a marker trait
- Introduce public APIs 'raw_init' and 'raw_try_init' to prevent
users from needing to invoke the internal '__pinned_init' and
'__init' methods
- Emit errors for duplicate '#[pin]' attributes
- Link 'Zeroable::zeroed' and 'pin_init::zeroed' in documentation
- Other changes:
- Fix unwind safety issues
- Clean up lint 'allow' and 'expect's
- Overhaul '#[cfg]' handling to pave the way for tuple structs
and self-referential structs
- Mark many functions as '#[inline]' for better codegen with '-C
opt-level=s' ('CC_OPTIMIZE_FOR_SIZE')
'MAINTAINERS':
- Update 'MODULE SUPPORT' to cover the new 'module' module
And some other fixes, cleanups and improvements"
* tag 'rust-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux: (54 commits)
rust: add functions and traits for lossless integer conversions
rust: kernel: add `LocalModule` fallback for `#[vtable]` `impl`s
rust: fmt: route {:p} through HashedPtr to prevent address leaks
rust: fmt: fix {:p} printing stack addresses
rust: module: update MAINTAINERS to cover module.rs
rust: macros: remove `THIS_MODULE` static from `module!`
rust_binder: use `LocalModule` for `THIS_MODULE`
rust: configfs: use `LocalModule` for `THIS_MODULE`
rust: miscdevice: set fops.owner from driver module pointer
rust: drm: set fops.owner from driver module pointer
rust: macros: auto-insert OwnerModule in #[vtable]
rust: doctest: add LocalModule fallback for #[vtable] ThisModule
rust: module: add `THIS_MODULE` const to `ModuleMetadata` trait
rust: module: move module types into `module.rs`
rust: num: add Bounded::shr_exact
rust: num: reject Bounded::shr overshifts at build time
rust: num: use const_assert! in Bounded
rust: uapi: replace direct asm-generic/ioctl.h include with linux/ioctl.h
rust: time: add Delta::as_millis_ceil()
rust: time: add jiffies time unit for Delta
...
|
||
|
Linus Torvalds
|
2063dd9d0b |
nolibc changes for v7.3
Highlights: * New architectures: Alpha * New library functionality: readlink(), getcwd() * Various bugfixes and cleanups -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTg4lxklFHAidmUs57B+h1jyw5bOAUCan7WEAAKCRDB+h1jyw5b OJl9AQD1L1S4Gvg+e82cFHeQp44+oTbj6evLQrwlRe0GZmZxHQEAhA9qMc0blpfn E7EYaldFXNzbO5Sl4MDwTh2huWj00Qk= =BSX8 -----END PGP SIGNATURE----- Merge tag 'nolibc-20260814-for-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc Pull nolibc updates from Thomas Weißschuh: - New architecture: Alpha - New library functionality: readlink(), getcwd() - Various bugfixes and cleanups * tag 'nolibc-20260814-for-7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/nolibc/linux-nolibc: tools/nolibc: add support for Alpha tools/nolibc/powerpc: mark ctr and xer as clobbered by system call tools/nolibc: remove dead __ARCH_WANT_SYS_OLD_SELECT selftests/nolibc: add debug information tools/nolibc: mark arg1 operand in __nolibc_syscall0() as write-only selftests/nolibc: Add test for getcwd() and readlink() tools/nolibc: unistd: Add readlink() tools/nolibc: unistd: Add getcwd() |