sysfb
- drm/sysfb truncation and alignment fixes.
edid:
- fix edid OOB read in tile parsing
- increase displayid topology id to correct size.
nouveau:
- fix error handling paths in nouveau
amdxdna:
- get_bo_info fix.
ivpu:
- fix leak when error handling in ivpu.
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Merge tag 'drm-fixes-2026-06-27' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"These are just the fixes from our fixes branch, all pretty small and
scattered.
sysfb:
- drm/sysfb truncation and alignment fixes
edid:
- fix edid OOB read in tile parsing
- increase displayid topology id to correct size
nouveau:
- fix error handling paths in nouveau
amdxdna:
- get_bo_info fix
ivpu:
- fix leak when error handling in ivpu"
* tag 'drm-fixes-2026-06-27' of https://gitlab.freedesktop.org/drm/kernel:
drm/sysfb: Avoid truncating maximum stride
drm/sysfb: Return errno code from drm_sysfb_get_visible_size()
drm/sysfb: Avoid possible truncation with calculating visible size
drm/sysfb: Do not page-align visible size of the framebuffer
drm/edid: fix OOB read in drm_parse_tiled_block()
drm/nouveau: fix reversed error cleanup order in ucopy functions
drm/nouveau/acr: fix missing nvkm_done() in error path of nvkm_acr_oneinit()
accel/amdxdna: Use caller client for debug BO sync
drm/displayid: fix Tiled Display Topology ID size
accel/ivpu: fix HWS command queue leak on registration failure
i915:
- Fix corrupted display output on GLK, #16209
- Add missing Spectre mitigation for parallel submit IOCTL
- MTL+ fix for DP resume
- clear CRTC blobs after dropping refs
- fix sharpness filter on DP MST
xe:
- Set TTM beneficial order to 9 in Xe
- Several error path cleanups
- Fix TDR for unstarted jobs on kernel queues
- Several TLB invalidation fixes related to suspending LR queues
- Some small RAS fixes
- Multi-queue suspend fix for LR queues
- Revert inclusion of NVL_S firmware
amdgpu:
- devcoredump fixes
- SMU15 fix
- Various irq put/get imbalance cleanup fixes
- 8K panel fix
- DCN3.5 fix
- lockdep fix
- Cleaner shader sysfs IB overflow fix
- Async flip fixes
- GET_MAPPING_INFO fix
- CP_GFX_SHADOW fix
- Ctx pstate handling fix
- GTT bo move handling fixes
- Old UVD BO placement fixes
- GC9 mode2 reset fix
- IH6.1 version fix
- Soft IH ring fix
amdkfd:
- Fix doorbell/mmio double unpin on free
- CRIU fixes
- SMI event fixes
- Sysfs teardown fix
- Various boundary checking fixes
- Various error checking fixes
- SVM fix
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Merge tag 'drm-next-2026-06-27' of https://gitlab.freedesktop.org/drm/kernel
Pull drm merge window fixes from Dave Airlie:
"This is the merge window fixes from our next tree, i915/xe and amdgpu
make up all of it.
I've got a separate fixes pull from our fixes branch arriving after
this.
i915:
- Fix corrupted display output on GLK, #16209
- Add missing Spectre mitigation for parallel submit IOCTL
- MTL+ fix for DP resume
- clear CRTC blobs after dropping refs
- fix sharpness filter on DP MST
xe:
- Set TTM beneficial order to 9 in Xe
- Several error path cleanups
- Fix TDR for unstarted jobs on kernel queues
- Several TLB invalidation fixes related to suspending LR queues
- Some small RAS fixes
- Multi-queue suspend fix for LR queues
- Revert inclusion of NVL_S firmware
amdgpu:
- devcoredump fixes
- SMU15 fix
- Various irq put/get imbalance cleanup fixes
- 8K panel fix
- DCN3.5 fix
- lockdep fix
- Cleaner shader sysfs IB overflow fix
- Async flip fixes
- GET_MAPPING_INFO fix
- CP_GFX_SHADOW fix
- Ctx pstate handling fix
- GTT bo move handling fixes
- Old UVD BO placement fixes
- GC9 mode2 reset fix
- IH6.1 version fix
- Soft IH ring fix
amdkfd:
- Fix doorbell/mmio double unpin on free
- CRIU fixes
- SMI event fixes
- Sysfs teardown fix
- Various boundary checking fixes
- Various error checking fixes
- SVM fix"
* tag 'drm-next-2026-06-27' of https://gitlab.freedesktop.org/drm/kernel: (52 commits)
drm/i915/cdclk: Fix up CDCLK_FREQ_DECIMAL without a full PLL re-enable
drm/i915/gem: Add missing nospec on parallel submit slot
drm/amdgpu: Use system unbound workqueue for soft IH ring
amdgpu/ih6.1: Fix minor version
drm/amdkfd: Use exclusive bounds for SVM split alignment checks
drm/amdgpu/gfx9: Fix Ring and IB test fail after mode2
drm/amdgpu/uvd: Fix forcing MSG, FB BOs into VCPU segment when it isn't at 0 (v2)
drm/amdgpu/uvd: Place VCPU BO only in VRAM for UVD 4.x and older
drm/amdgpu: Fix amdgpu_bo_move() when old_mem and new_mem are both GTT
drm/amdgpu: Respect placement requirements in amdgpu_gtt_mgr functions
drm/amdgpu: Fix context pstate override handling
drm/amdkfd: Use memdup_array_user to copy data from/to user space at kfd ioctls
drm/amdkfd: check find_first_zero_bit before __set_bit on kfd->doorbell_bitmap
drm/amdkfd: Let driver decide buffer size at AMDKFD_IOC_GET_DMABUF_INFO ioctl
drm/amdgpu: fix recursive ww_mutex acquire in amdgpu_devcoredump_format
drm/amdgpu: convert amdgpu_vm_lock_by_pasid() to drm_exec
drm/amdgpu: Don't use UTS_RELEASE directly
drm/amdkfd: Fix NULL deref during sysfs teardown
drm/amdgpu: validate CP_GFX_SHADOW chunk size in CS pass1
drm/amdgpu: check amdgpu_vm_bo_find() result in GET_MAPPING_INFO
...
operators to get out of tricky livelock situations involving caps and
file locks without evicting the problematic client instance on the MDS
side or rebooting the client node both of which can be disruptive.
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Merge tag 'ceph-for-7.2-rc1' of https://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov:
"This adds support for manual client session reset in CephFS, allowing
operators to get out of tricky livelock situations involving caps and
file locks without evicting the problematic client instance on the MDS
side or rebooting the client node both of which can be disruptive"
* tag 'ceph-for-7.2-rc1' of https://github.com/ceph/ceph-client:
ceph: add manual reset debugfs control and tracepoints
ceph: add client reset state machine and session teardown
ceph: add diagnostic timeout loop to wait_caps_flush()
ceph: harden send_mds_reconnect and handle active-MDS peer reset
ceph: use proper endian conversion for flock_len in reconnect
ceph: convert inode flags to named bit positions and atomic bitops
rbd: switch to dynamic root device
- Fix dangling resources on thermal_throttle_online() failure in the
Intel thermal_throttle driver (Ricardo Neri)
- Eliminate a possibility of running thermal testing module code after
that module has been removed (Rafael Wysocki)
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Merge tag 'thermal-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control fixes from Rafael Wysocki:
"These fix a failure path in an Intel thermal driver and prevent
thermal testing module code from being executed after it has been
freed:
- Fix dangling resources on thermal_throttle_online() failure in the
Intel thermal_throttle driver (Ricardo Neri)
- Eliminate a possibility of running thermal testing module code
after that module has been removed (Rafael Wysocki)"
* tag 'thermal-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal: testing: zone: Flush work items during cleanup
thermal: intel: Fix dangling resources on thermal_throttle_online() failure
- Remove a misguided warning along with an inaccurate comment next to
it from the cpuidle core (Rafael Wysocki)
- Clear need_freq_update as appropriate in the .adjust_perf()
path of the schedutil cpufreq governor to avoid calling
cpufreq_driver_adjust_perf() unnecessarily on every scheduler
utilization update (Zhongqiu Han)
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Merge tag 'pm-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix the schedutil cpufreq governor and drop a bogus warning
from the cpuidle core:
- Remove a misguided warning along with an inaccurate comment
next to it from the cpuidle core (Rafael Wysocki)
- Clear need_freq_update as appropriate in the .adjust_perf()
path of the schedutil cpufreq governor to avoid calling
cpufreq_driver_adjust_perf() unnecessarily on every scheduler
utilization update (Zhongqiu Han)"
* tag 'pm-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpuidle: Allow exit latency to exceed target residency
cpufreq: schedutil: Fix uncleared need_freq_update on the .adjust_perf() path
- Unbreak ACPICA tools builds after switching over to using
strscpy_pad() that is kernel-specific (Rafael Wysocki)
- Fix module parameter file paths in comments in the ACPI code managing
the general sysfs attributes (Zenghui Yu)
- Update kerneldoc comments in the ACPI resource management code to
follow the common style (Andy Shevchenko)
- Fix inverted interface check in ipmi_bmc_gone() that may cause ACPI
IPMI interfaces to be mishandled (Xu Rao)
- Add __cpuidle annotation to idle state management functions related
to ACPI _LPI to avoid trace-induced RCU warnings (Li RongQing)
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Merge tag 'acpi-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI support fixes and cleanups from Rafael Wysocki:
"These fix assorted issues and do cleanups in the ACPI support code,
which includes a fix for tools build breakage related to strncpy()
removal:
- Unbreak ACPICA tools builds after switching over to using
strscpy_pad() that is kernel-specific (Rafael Wysocki)
- Fix module parameter file paths in comments in the ACPI code
managing the general sysfs attributes (Zenghui Yu)
- Update kerneldoc comments in the ACPI resource management code to
follow the common style (Andy Shevchenko)
- Fix inverted interface check in ipmi_bmc_gone() that may cause ACPI
IPMI interfaces to be mishandled (Xu Rao)
- Add __cpuidle annotation to idle state management functions related
to ACPI _LPI to avoid trace-induced RCU warnings (Li RongQing)"
* tag 'acpi-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: processor_idle: Mark LPI enter functions as __cpuidle
ACPICA: Unbreak tools build after switching over to strscpy_pad()
ACPI: IPMI: Fix inverted interface check in ipmi_bmc_gone()
ACPI: resource: Amend kernel-doc style
ACPI: sysfs: Fix path of module parameters in comments
As was recently noted on the rust-for-linux list, the usb.rs file is not
listed as part of the USB SUBSYSTEM files, which can cause changes to it
to be not sent to the proper list and people. Fix this up by adding it
to the USB SUBSYSTEM file list
Reported-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patch.msgid.link/2026062533-achiness-outsell-a93a@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A fairly unremarkable collection of fixes that came in over the merge
window, plus a new device ID for the DesignWare controller in the
StarFive JHB100 SoC. There's a couple of core fixes included, one
avoiding freeing an empty resource in error handling cases and another
which fixes a NULL dereference which could be triggered by using an
abnormal device registration flow like driver_override.
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Merge tag 'spi-fix-v7.2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A fairly unremarkable collection of fixes that came in over the
merge window, plus a new device ID for the DesignWare controller
in the StarFive JHB100 SoC.
There's a couple of core fixes included, one avoiding freeing an
empty resource in error handling cases and another which fixes a
NULL dereference which could be triggered by using an abnormal
device registration flow like driver_override"
* tag 'spi-fix-v7.2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: imx: reconfigure for PIO when DMA cannot be started
spi: dw: Add support for snps,dwc-ssi-2.00a
spi: dt-bindings: snps,dw-apb-ssi: Add starfive,jhb100-spi
spi: rpc-if: Use correct device for hardware reinitialization on resume
spi: acpi: Free resource list at appropriate time
spi: dw: fix wrong BAUDR setting after resume
spi: uniphier: Fix completion initialization order before devm_request_irq()
spi: Add NULL check for spi_get_device_id() in spi_get_device_match_data()
A couple of unremarkable driver specific fixes that came in during the
merge window.
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Merge tag 'regulator-fix-v7.2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A couple of unremarkable driver specific fixes that came in during the
merge window"
* tag 'regulator-fix-v7.2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: da9121: Use subvariant ids in the I2C table
regulator: pca9450: Correct default t_off_deb for PCA9451A/PCA9452
A fix to ensure that we don't overwrite the error code when cleaning up
a failed cache initialisation, helping people debug issues if they do
arise.
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Merge tag 'regmap-fix-v7.2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fix from Mark Brown:
"Ensure that we don't overwrite the error code when cleaning up a
failed cache initialisation, helping people debug issues if they
do arise"
* tag 'regmap-fix-v7.2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regcache: Do not overwrite error code when finalizing cache after error
Merge a fix eliminating a possibility of running the thermal testing
module code after that module has been removed.
* thermal-testing:
thermal: testing: zone: Flush work items during cleanup
Merge a cpuidle core fix that removes a misguided warning along with an
inaccurate comment next to it.
* pm-cpuidle:
cpuidle: Allow exit latency to exceed target residency
Merge an update of comments regarding the ACPI sysfs code, a kernel-doc
style fixup update of ACPI resource management, and ACPI IPMI driver
fix, and an ACPI processor driver fix for 7.2-rc1:
- Fix module parameter file paths in comments in the ACPI code managing
the general sysfs attributes (Zenghui Yu)
- Update kerneldoc comments in the ACPI resource management code to
follow the common style (Andy Shevchenko)
- Fix inverted interface check in ipmi_bmc_gone() which may cause ACPI
IPMI interfaces to be mishandled (Xu Rao)
- Add __cpuidle to idle state management functions related to ACPI _LPI
to avoid trace-induced RCU warnings (Li RongQing)
* acpi-sysfs:
ACPI: sysfs: Fix path of module parameters in comments
* acpi-resource:
ACPI: resource: Amend kernel-doc style
* acpi-driver:
ACPI: IPMI: Fix inverted interface check in ipmi_bmc_gone()
* acpi-processor:
ACPI: processor_idle: Mark LPI enter functions as __cpuidle
blk_hctx_poll() can busy-poll until a completion is found or
need_resched() becomes true. On preemptible kernels, the scheduler can
set TIF_NEED_RESCHED on the timer tick and preempt the task at IRQ
return before the loop condition re-evaluates it. After the context
switch, the flag is cleared, so the poller can continue spinning instead
of returning to its caller.
This can happen with io_uring IOPOLL reads inside iocb_bio_iopoll(),
which holds the rcu_read_lock() while calling bio_poll(). If another
poller on the same polled queue drains the available completions, this
poller may repeatedly find no completions and remain inside the RCU
read-side critical section long enough to trigger RCU stall reports:
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-1 rcu_node (CPUs 0-9): P3961
rcu: (detected by 3, t=60002 jiffies, g=18533, q=4943 ncpus=20)
task:fio state:R running task stack:0 pid:3961
Call Trace:
<TASK>
? nvme_poll+0x36/0xa0 [nvme]
? blk_hctx_poll+0x39/0x90
? blk_mq_poll+0x30/0x60
? bio_poll+0x87/0x170
? iocb_bio_iopoll+0x32/0x50
? io_uring_classic_poll+0x25/0x50
? io_do_iopoll+0x216/0x420
? __do_sys_io_uring_enter+0x2c7/0x7c0
Reproducible with:
fio -filename=/dev/nvme0n1 -direct=1 -size=4g -rw=randread \
--numjobs=32 -bs=4K -ioengine=io_uring -hipri=1 -iodepth=1 \
--registerfiles=1 --group_reporting --thread
Record the starting jiffy and exit the loop once jiffies has advanced.
This bounds each blk_hctx_poll() invocation while also covering the
case where the reschedule flag was cleared by the context switch
before the loop condition could observe it.
Fixes: f22ecf9c14 ("blk-mq: delete task running check in blk_hctx_poll()")
Reviewed-by: Fengnan Chang <changfengnan@bytedance.com>
Suggested-by: Fengnan Chang <changfengnan@bytedance.com>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Signed-off-by: Alok Rathore <alok.rathore@samsung.com>
Link: https://patch.msgid.link/20260617155051.1266079-1-anuj20.g@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
- Drop unnecessary type reference from khadas,mcu "fan-supply"
- Fix clocks in Renesas R-Mobile APE6 example
- Add missing Unisoc SC2730 PMIC regulators schema
- Fix Amlogic thermal example
- kernel-doc fix for of_map_id()
- Handle negative index in of_fwnode_get_reference_args()
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Merge tag 'devicetree-fixes-for-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Drop unnecessary type reference from khadas,mcu "fan-supply"
- Fix clocks in Renesas R-Mobile APE6 example
- Add missing Unisoc SC2730 PMIC regulators schema
- Fix Amlogic thermal example
- kernel-doc fix for of_map_id()
- Handle negative index in of_fwnode_get_reference_args()
* tag 'devicetree-fixes-for-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: mfd: khadas,mcu: Drop type reference from "fan-supply"
dt-bindings: clock: renesas: div6: Use ZT/ZTR trace clock in R-Mobile APE6 example
regulator: dt-bindings: Add Unisoc SC2730 PMIC
dt-bindings: thermal: amlogic: Correct 'reg' in the example
dt-bindings: thermal: amlogic: Fix missing header in the example
of: Fix RST inline emphasis warnings in of_map_id() kernel-doc
of: property: Fix of_fwnode_get_reference_args() with negative index
1, Add THREAD_INFO_IN_TASK implementation;
2, Add build salt to the vDSO;
3, Add some BPF JIT inline helpers;
4, Update DTS for I2C clocks and clock-frequency;
5, Some bug fixes and other small changes.
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Merge tag 'loongarch-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Add THREAD_INFO_IN_TASK implementation
- Add build salt to the vDSO
- Add some BPF JIT inline helpers
- Update DTS for I2C clocks and clock-frequency
- Some bug fixes and other small changes
* tag 'loongarch-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
selftests/bpf: Test jited inline of bpf_get_smp_processor_id() for LoongArch
selftests/bpf: Test jited inline of bpf_get_current_task() for LoongArch
selftests/bpf: Add __arch_loongarch to limit test cases for LoongArch
selftests/bpf: Add get_preempt_count() support for LoongArch
LoongArch: dts: Add i2c clocks and clock-frequency properties to LS2K2000
LoongArch: dts: Add i2c clocks and clock-frequency properties to LS2K1000
LoongArch: dts: Add i2c clocks and clock-frequency properties to LS2K0500
LoongArch: BPF: Inline bpf_get_smp_processor_id() helper
LoongArch: BPF: Inline bpf_get_current_task/_btf() helpers
LoongArch: BPF: Fix off-by-one error in tail call
LoongArch: BPF: Fix outdated tail call comments
LoongArch: Add build salt to the vDSO
LoongArch: Fix nr passing in set_direct_map_valid_noflush()
LoongArch: Fix missing dirty page tracking in {pte,pmd}_wrprotect()
LoongArch: Move struct kimage forward declaration before use
LoongArch: Report dying CPU to RCU in stop_this_cpu()
LoongArch: Add PIO for early access before ACPI PCI root register
LoongArch: Add THREAD_INFO_IN_TASK implementation
- Fix randconfig build failure due to missing include of asm/insn.h.
- Reject unaligned hardware watchpoints which were silently being
truncated.
- Fix crash in KVM initialisation by deferring the read-only remapping
of the kernel data and bss sections.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Small crop of arm64 fixes for -rc1. We've got a build fix for a new
randconfig permutation, a fix for a long-standing truncation issue
with hardware watchpoints and a KVM initialisation fix for the newly
merged remapping of the kernel data and bss sections:
- Fix randconfig build failure due to missing include of asm/insn.h
- Reject unaligned hardware watchpoints which were silently being
truncated
- Fix crash in KVM initialisation by deferring the read-only
remapping of the kernel data and bss sections"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mm: Defer read-only remap of data/bss linear alias
arm64/hw_breakpoint: reject unaligned watchpoints that would truncate BAS
arm64: static_call: include asm/insns.h
- Code cleanup to replace kmalloc()/snprintf() with kasprintf()
- Code cleanup to simplify code flow by removing an unnecessary variable
There should be no functional changes. The patches have all spent time
in linux-next and they pass all tests in the ecryptfs-utils tree.
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Merge tag 'ecryptfs-7.2-rc1-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs
Pull ecryptfs updates from Tyler Hicks:
"No functional changes, just code cleanups:
- replace kmalloc()/snprintf() with kasprintf()
- simplify code flow by removing an unnecessary variable"
* tag 'ecryptfs-7.2-rc1-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
ecryptfs: use kasprintf in ecryptfs_crypto_api_algify_cipher_name
ecryptfs: remove redundant variable found_auth_tok
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Merge tag 'v7.2-rc-part2-smb3-server-fixes' of git://git.samba.org/ksmbd
Pull smb server updates from Steve French:
"This is mostly a correctness and compatibility update for ksmbd's
SMB2/3 lease, oplock, durable handle, compound request, CREATE,
rename, stream and share-mode handling.
A large part of the series fixes cases found by smbtorture where ksmbd
diverged from the SMB2/3 protocol requirements.
The main changes are:
- Rework SMB2 lease state handling so lease state is shared per
ClientGuid/LeaseKey across opens, with better validation of lease
create contexts, ACK handling, epochs, break-in-progress reporting,
v2 lease notification routing, and chained lease breaks
- Fix several oplock break corner cases, including ACK validation,
timeout downgrade behavior, level-II break handling on unlink,
share-conflict lease breaks, and read-control/stat-open behavior
- Fix durable handle behavior around delete-on-close, stale
reconnects, reconnect context parsing, oplock/lease break
invalidation, and durable v2 AppInstanceId replacement
- Fix compound request handling so related commands propagate failed
statuses correctly, preserve response framing across chained
errors, keep compound FIDs across READ/WRITE/FLUSH, and send
interim STATUS_PENDING where clients expect cancellable compound
I/O
- Tighten CREATE and stream semantics, including create attribute
validation, allocation size reporting, explicit create security
descriptors, unnamed DATA stream handling, stream directory
validation, and stream delete sharing against the base file
- Fix rename and metadata behavior, including parent directory
sharing checks, denying directory rename with open children, and
preserving SMB ChangeTime across rename for open handles
- Fix two important safety issues: a multichannel byte-range lock
list owner race that could lead to use-after-free, and an NTLMv2
session key update before authentication proof validation
- Fix a concurrent SMB2 NEGOTIATE preauth use-after-free, a UBSAN
warning in compression capability parsing, a false hung-task
warning in the durable handle scavenger, endian debug logging,
Smatch indentation warnings, and kernel-doc warnings
- Increase the default SMB3 transaction size from 1MB to 4MB to
better match modern read/write negotiation and improve sequential
I/O behavior"
* tag 'v7.2-rc-part2-smb3-server-fixes' of git://git.samba.org/ksmbd: (50 commits)
ksmbd: fix kernel-doc warnings in smb2_lease_break_noti()
ksmbd: fix inconsistent indenting warnings
ksmbd: validate NTLMv2 response before updating session key
ksmbd: increase SMB3_DEFAULT_TRANS_SIZE from 1MB to 4MB
ksmbd: fix UBSAN array-index-out-of-bounds in decode_compress_ctxt()
ksmbd: sleep interruptibly in the durable handle scavenger
ksmbd: start file id allocation at 1
ksmbd: treat read-control opens as stat opens only for leases
ksmbd: validate :: stream type against directory create
ksmbd: break conflicting-open leases only as far as needed
ksmbd: break handle caching for share conflicts
ksmbd: normalize ungrantable lease states
ksmbd: return oplock protocol error for level II ack
ksmbd: avoid level II oplock break notification on unlink
ksmbd: downgrade oplock after break timeout
ksmbd: apply create security descriptor first
ksmbd: return requested create allocation size
ksmbd: tighten create file attribute validation
ksmbd: reject empty-attribute synchronize-only create
ksmbd: honor stream delete sharing for base file
...
info->var, a framebuffer's current mode, is expected to have a matching
entry in info->modelist. var_to_display() relies on this and treats a
failed fb_match_mode() as "This should not happen". fb_set_var() keeps it
true by adding the mode to the list on every change, and
do_register_framebuffer() does the same at registration.
store_modes() replaces the modelist from userspace. fb_new_modelist()
validates the new modes but does not check that info->var still has a
match. It relies on fbcon_new_modelist() to re-point consoles, but that
only handles consoles mapped to the framebuffer. With fbcon unbound there
are none, so info->var is left describing a mode that is no longer in the
list.
A later console takeover runs var_to_display(), where fb_match_mode()
returns NULL and leaves fb_display[i].mode NULL. fbcon_switch() passes it
to display_to_var(), and fb_videomode_to_var() dereferences the NULL mode.
Keep the current mode in the list in fb_new_modelist(), the same way
fb_set_var() does.
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Ian Bridges <icb@fastmail.org>
Signed-off-by: Helge Deller <deller@gmx.de>
fbcon_new_modelist() runs when a framebuffer's modelist changes. For each
console mapped to it with fb_display[i].mode set, it reads vc_cons[i].d and
passes the vc_num to fbcon_set_disp(). This assumes a console with a mode
set has a vc_data, but it can be NULL. fbcon_set_disp() sets
fb_display[i].mode before it checks vc_data, and fbcon_deinit() leaves the
mode set after the vc_data is freed. fbcon_new_modelist() then dereferences
the NULL vc_data.
Keep fb_display[i].mode set only while the console has a vc_data. Check
vc_data before setting the mode in fbcon_set_disp(), and clear the mode in
fbcon_deinit(). The existing mode check in fbcon_new_modelist() then skips
such consoles.
Reported-by: syzbot+42525d636f430fd5d983@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=42525d636f430fd5d983
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Ian Bridges <icb@fastmail.org>
Signed-off-by: Helge Deller <deller@gmx.de>
store_modes() replaces a framebuffer's modelist with modes from userspace.
On success it frees the old modelist with fb_destroy_modelist(). Two
fields still point into that freed list.
One pointer is fb_display[i].mode, the mode a console is using.
fbcon_new_modelist() moves these pointers to the new list. It only does so
for consoles still mapped to the framebuffer. An unmapped console is
skipped and keeps its stale pointer. Unbinding fbcon, for example, sets
con2fb_map[i] to -1 but leaves fb_display[i].mode set. An
FBIOPUT_VSCREENINFO ioctl with FB_ACTIVATE_INV_MODE later reaches
fbcon_mode_deleted(). That function reads the stale fb_display[i].mode
through fb_mode_is_equal(). The read is a use-after-free.
The other pointer is fb_info->mode, the current mode. It is set through
the mode sysfs attribute. store_modes() does not update fb_info->mode, so
it is left pointing into the freed list. show_mode(), the attribute's read
handler, dereferences the stale fb_info->mode through mode_string(). The
read is a use-after-free.
Clear both pointers before freeing the list. Commit a1f3058930 ("fbcon:
Set fb_display[i]->mode to NULL when the mode is released") added the
helper fbcon_delete_modelist(). It clears every fb_display[i].mode that
points into a given list. So far it is called only from the unregister
path. Call it from store_modes() too, and set fb_info->mode to NULL.
Reported-by: syzbot+81c7c6b52649fd07299d@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=81c7c6b52649fd07299d
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/ajjoDhAi2y4ArSlz@dev/
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Ian Bridges <icb@fastmail.org>
Signed-off-by: Helge Deller <deller@gmx.de>
egpio_probe() registers each nested gpio_chip with gpiochip_add_data()
but ignores the return value. If one registration fails, probe still
returns success even though one of the chips was not published to
gpiolib.
Use devm_gpiochip_add_data() and fail probe if any chip registration
fails. This lets devres unwind already registered chips and prevents
the driver from publishing a partially initialized device.
Fixes: a1635b8fe5 ("[ARM] 4947/1: htc-egpio, a driver for GPIO/IRQ expanders with fixed input/output pins")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260624131828.94139-1-pengpeng@iscas.ac.cn
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
mvebu_gpio_probe() registers the GPIO chip with
devm_gpiochip_add_data() but ignores the return value. If registration
fails, probe continues and leaves later code operating on a GPIO chip
that was never published to gpiolib.
Return the registration error so the device fails probe cleanly.
Fixes: fefe7b0923 ("gpio: introduce gpio-mvebu driver for Marvell SoCs")
Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260624131645.86884-1-pengpeng@iscas.ac.cn
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
skb_gso_segment() leaves the segment list head with ->prev pointing at
the last segment, an invariant validate_xmit_skb_list() relies on when
it sets its tail pointer (tail = skb->prev).
When validate_xmit_xfrm() walks a GSO list and some segments are stolen
by async crypto (->xmit() returns -EINPROGRESS), those segments are
unlinked from the list but the head ->prev is never updated. If the
last segment is the one stolen, the returned head still has ->prev
pointing at it, even though it is now owned by the crypto engine and may
be freed. validate_xmit_skb_list() later does tail->next = skb, writing
through that stale pointer -- a use-after-free.
Repoint skb->prev at the last retained segment before returning.
Fixes: f53c723902 ("net: Add asynchronous callbacks for xfrm on layer 2.")
Signed-off-by: Petr Wozniak <petr.wozniak@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
validate_xmit_xfrm() returns NULL both when a packet is dropped and
when it is stolen by async crypto (-EINPROGRESS from ->xmit()).
Callers cannot distinguish the two cases.
f53c723902 ("net: Add asynchronous callbacks for xfrm on layer 2.")
changed the semantics of a NULL return from "dropped" to "stolen or
dropped", but __dev_queue_xmit() was not updated. On virtual/bridge
interfaces (noqueue qdisc) __dev_queue_xmit() initialises rc=-ENOMEM
and jumps to out: when skb is NULL, returning -ENOMEM to the caller
even though the packet will be delivered correctly via xfrm_dev_resume().
Return ERR_PTR(-EINPROGRESS) from validate_xmit_xfrm() for the async
case so callers can tell it apart from a real drop. Update
__dev_queue_xmit() to handle ERR_PTR(-EINPROGRESS) from
validate_xmit_skb() correctly. Update validate_xmit_skb_list() to
use IS_ERR_OR_NULL() so that ERR_PTR(-EINPROGRESS) is not mistakenly
added to the transmitted list.
Fixes: f53c723902 ("net: Add asynchronous callbacks for xfrm on layer 2.")
Suggested-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Petr Wozniak <petr.wozniak@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
A malformed USB device can provide a vendor-specific interface without
any endpoint descriptors. fcp_find_fc_interface() currently selects the
first vendor-specific interface and reads endpoint 0 from it, without
checking whether the interface actually has any endpoints.
When bNumEndpoints is zero, no endpoint array is allocated for the parsed
alternate setting, so get_endpoint(..., 0) yields an invalid endpoint
descriptor pointer. Dereferencing it through usb_endpoint_num() then
triggers a NULL pointer dereference.
Skip vendor-specific interfaces that do not have any endpoints.
Fixes: 46757a3e7d ("ALSA: FCP: Add Focusrite Control Protocol driver")
Reported-by: Jiaming Zhang <r772577952@gmail.com>
Closes: https://lore.kernel.org/lkml/CANypQFb1EHj0xX8bA1WxSOSK-5xca6ZNKzOQcp12=s=puY7VFw@mail.gmail.com/
Signed-off-by: Jiaming Zhang <r772577952@gmail.com>
Link: https://patch.msgid.link/20260625134933.425785-1-r772577952@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The laptop has a microphone mute LED on the F4 key, but it was not
taken in mind when the previous quirk was added
in commit 00e44a68ef ("ALSA:
hda/realtek: Add quirk for Acer Nitro ANV15-41").
Replace ALC2XX_FIXUP_HEADSET_MIC with ALC245_FIXUP_ACER_MICMUTE_LED,
which enables the LED and chains the previous quirk for the headset
microphone.
Fixes: 00e44a68ef ("ALSA: hda/realtek: Add quirk for Acer Nitro ANV15-41")
Signed-off-by: Oleg Kucheryavenko <oleg.kucheryavenko2018@gmail.com>
Link: https://patch.msgid.link/20260625134955.27465-1-oleg.kucheryavenko2018@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
We've got a good collection of device specific fix here, plus a couple
of stand out things:
- Richard fixed some special cases with the new device_link creation
by more gracefully handling any errors during creation.
- Charles did some light refactoring of the SoundWire interfaces to
fix some persistent randconfig issues that people kept running into.
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Merge tag 'asoc-fix-v7.2-merge-window' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v7.2
We've got a good collection of device specific fix here, plus a couple
of stand out things:
- Richard fixed some special cases with the new device_link creation
by more gracefully handling any errors during creation.
- Charles did some light refactoring of the SoundWire interfaces to
fix some persistent randconfig issues that people kept running into.
When bpf_check() allocates env->insn_aux_data successfully but later
fails to allocate env->succ, it jumps directly to err_free_env.
The existing vfree(env->insn_aux_data) sits before the err_free_env
label, so that direct jump bypasses it and leaks insn_aux_data.
Move vfree(env->insn_aux_data) into err_free_env so all early and late
exit paths release it consistently.
Fixes: 2f69c56854 ("bpf: make bpf_insn_successors to return a pointer")
Signed-off-by: KaFai Wan <kafai.wan@linux.dev>
Reviewed-by: Anton Protopopov <a.s.protopopov@gmail.com>
Link: https://lore.kernel.org/r/20260624123536.114757-1-kafai.wan@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Nuoqi Gui says:
====================
bpf: Mask pseudo pointer values in verifier logs
Verifier log printing already hides ldimm64 immediates for map FD and
map value pseudo sources when pointer leaks are not allowed. The same
print path also sees rewritten immediates for BPF_PSEUDO_MAP_IDX,
BPF_PSEUDO_MAP_IDX_VALUE, and BPF_PSEUDO_BTF_ID, but those sources were
not included in the pointer classification.
Extend the existing masking so all pointer-producing ldimm64 pseudo
sources print as 0x0 when allow_ptr_leaks is false.
Patch 1 extends the disassembler-side masking.
Patch 2 adds verifier selftest coverage for pseudo-BTF ksym logs.
Signed-off-by: Nuoqi Gui <gnq25@mails.tsinghua.edu.cn>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
---
Changes in v2:
- Replace the CAP_BPF gate with verifier-log masking in print_bpf_insn().
- Also mask BPF_PSEUDO_MAP_IDX and BPF_PSEUDO_MAP_IDX_VALUE immediates.
- Update selftests to check masked pseudo-BTF ksym logs.
- Link to v1: https://patch.msgid.link/20260620-f01-13-pseudo-btf-id-cap-bpf-v1-0-f950f69fe60c@mails.tsinghua.edu.cn
====================
Link: https://patch.msgid.link/20260623-f01-13-pseudo-btf-id-cap-bpf-v2-0-a190ebb8f3e2@mails.tsinghua.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Add verifier_unpriv coverage for a raw socket-filter load of the
bpf_prog_active typed ksym. The test verifies that the unprivileged load
remains accepted and that the verbose verifier log prints the ldimm64
immediate as 0x0 instead of exposing a nonzero kernel address.
Signed-off-by: Nuoqi Gui <gnq25@mails.tsinghua.edu.cn>
Link: https://lore.kernel.org/r/20260623-f01-13-pseudo-btf-id-cap-bpf-v2-2-a190ebb8f3e2@mails.tsinghua.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
print_bpf_insn() masks ldimm64 immediates for pointer-bearing pseudo
sources when pointer leaks are not allowed, but the mask only covers
BPF_PSEUDO_MAP_FD and BPF_PSEUDO_MAP_VALUE.
BPF_PSEUDO_MAP_IDX, BPF_PSEUDO_MAP_IDX_VALUE, and BPF_PSEUDO_BTF_ID can
also be resolved to kernel pointer values before the verifier log prints
the instruction. Include them in the existing pointer classification so
the log prints 0x0 instead of the rewritten address.
Fixes: 4976b718c3 ("bpf: Introduce pseudo_btf_id")
Fixes: 387544bfa2 ("bpf: Introduce fd_idx")
Signed-off-by: Nuoqi Gui <gnq25@mails.tsinghua.edu.cn>
Link: https://lore.kernel.org/r/20260623-f01-13-pseudo-btf-id-cap-bpf-v2-1-a190ebb8f3e2@mails.tsinghua.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Yiyang Chen says:
====================
bpf: Reject offset refcount acquire arguments
bpf_refcount_acquire() is modeled as returning a refcounted allocation
base, but it currently accepts PTR_TO_BTF_ID | MEM_ALLOC arguments whose
offset already points at an embedded graph node returned from a list or
rbtree operation.
At runtime the kfunc starts from the supplied pointer and adds the type's
refcount offset. With a graph-node pointer, that starts from base +
node_off, while the verifier treats the returned pointer as the allocation
base. Reject non-zero fixed-offset arguments to keep the runtime operation
and the verifier model aligned.
Programs that pop graph nodes can still acquire a reference after
normalizing the node pointer with container_of().
Patch 1 handles the zero fixed-offset requirement in the existing
check_func_arg_reg_off() / __check_ptr_off_reg() path without consuming a
bpf_type_flag bit.
Patch 2 adds a rejected direct list-node case.
Changes from v3:
- Add Eduard's Acked-by to patch 1.
- Drop the redundant rbtree selftest case; the list case exercises the same
refcount-acquire fixed-offset rejection path.
- Trim the selftest commit message and remove the selftest Fixes tag.
Changes from v2:
- Avoid adding a new bpf_type_flag bit.
- Carry the refcount-acquire zero fixed-offset requirement with an
internal check_func_arg_reg_off() parameter.
Changes from v1:
- Move zero fixed-offset enforcement into check_func_arg_reg_off() /
__check_ptr_off_reg(), as suggested by Eduard.
- Drop the positive container_of() selftest case.
- Remove the stale bpf_obj_drop() after bpf_list_push_front(), since the
pushed reference is consumed even when the verifier explores the error
branch.
- Rebase to bpf-next master a975094bf9.
v3: https://lore.kernel.org/bpf/cover.1781979133.git.chenyy23@mails.tsinghua.edu.cn/
v2: https://lore.kernel.org/bpf/cover.1781963957.git.chenyy23@mails.tsinghua.edu.cn/
v1: https://lore.kernel.org/bpf/cover.1781852308.git.chenyy23@mails.tsinghua.edu.cn/
====================
Link: https://patch.msgid.link/cover.1782192383.git.chenyy23@mails.tsinghua.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Add regression coverage for bpf_refcount_acquire() on graph-node-derived
pointers.
The rejected case passes a popped list node pointer directly to
bpf_refcount_acquire(), which must fail because the pointer carries a
non-zero fixed offset.
Signed-off-by: Yiyang Chen <chenyy23@mails.tsinghua.edu.cn>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/bf2a2033ced272106292de4465b8ef3fb991c912.1782192383.git.chenyy23@mails.tsinghua.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
bpf_refcount_acquire() increments the refcount at the caller-supplied
pointer plus the refcount field offset, then returns the caller-supplied
pointer unchanged.
The verifier records the return value as a base pointer to the refcounted
object.
bpf_list_pop_front() and bpf_rbtree_remove() can return embedded
graph-node pointers as PTR_TO_BTF_ID | MEM_ALLOC with a fixed offset equal
to the node field offset. Passing such a pointer directly to
bpf_refcount_acquire() currently passes the refcounted-kptr type check.
That makes the runtime operation start from base + node_off while the
verifier models the returned pointer as the object base.
Require refcount-acquire arguments to have zero fixed offset by carrying
the requirement through check_func_arg_reg_off() to __check_ptr_off_reg().
Programs can still acquire a refcount from a graph-node-derived pointer
after normalizing it with container_of().
Fixes: 7c50b1cb76 ("bpf: Add bpf_refcount_acquire kfunc")
Signed-off-by: Yiyang Chen <chenyy23@mails.tsinghua.edu.cn>
Acked-by: Eduard Zingerman <eddyz87@gmail.com>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/r/2f894647f56f71838fdddeb97a3e057ed35ea92e.1782192383.git.chenyy23@mails.tsinghua.edu.cn
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
rmi_f30_map_gpios() allocates gpioled_key_map with
min(gpioled_count, TRACKSTICK_RANGE_END) == at most 6 entries, but
rmi_f30_attention() iterates the full f30->gpioled_count (device query
register, range 0..31) and dereferences gpioled_key_map[i], and
input->keycodemax is set to the full gpioled_count while input->keycode
points at the 6-entry allocation.
A device that reports gpioled_count > 6 with GPIO support enabled
therefore causes an out-of-bounds read on the attention interrupt and
out-of-bounds read/write through the EVIOCGKEYCODE/EVIOCSKEYCODE ioctls,
which bound the index only against keycodemax. This is the same defect
as the F3A handler, which was copied from F30.
Size the keymap for the full gpioled_count; the mapping loop still
assigns only the first min(gpioled_count, TRACKSTICK_RANGE_END) entries.
Fixes: 3e64fcbdbd ("Input: synaptics-rmi4 - limit the range of what GPIOs are buttons")
Cc: stable@vger.kernel.org
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Link: https://patch.msgid.link/20260614-b4-disp-818d6bda-v1-2-cf39a3615085@proton.me
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
rmi_f3a_initialize() takes the GPIO count from the device query register
(f3a->gpio_count = buf & RMI_F3A_GPIO_COUNT, range 0..127).
rmi_f3a_map_gpios() then allocates gpio_key_map with
min(gpio_count, TRACKSTICK_RANGE_END) == at most 6 entries, but
rmi_f3a_attention() iterates the full gpio_count and dereferences
gpio_key_map[i], and input->keycodemax is set to the full gpio_count
while input->keycode points at the 6-entry allocation.
A device that reports gpio_count > 6 therefore causes an out-of-bounds
read of gpio_key_map[] on every attention interrupt, and out-of-bounds
accesses through the input core's default keymap ioctls: EVIOCGKEYCODE
reads past the buffer (leaking adjacent slab memory to user space) and
EVIOCSKEYCODE writes a caller-controlled value past it, for any process
able to open the evdev node, since input_default_getkeycode() and
input_default_setkeycode() only bound the index against keycodemax.
Size the keymap for the full gpio_count. The mapping loop is unchanged:
it still assigns only the first min(gpio_count, TRACKSTICK_RANGE_END)
entries; the remaining slots stay KEY_RESERVED (devm_kcalloc zero-fills)
and are skipped when reporting.
Fixes: 9e4c596bfd ("Input: synaptics-rmi4 - add support for F3A")
Cc: stable@vger.kernel.org
Signed-off-by: Bryam Vargas <hexlabsecurity@proton.me>
Link: https://patch.msgid.link/20260614-b4-disp-818d6bda-v1-1-cf39a3615085@proton.me
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Verify that attaching an SK_SKB stream parser that can modify the packet
is rejected, while a read-only parser still attaches.
Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Signed-off-by: Sechang Lim <rhkrqnwk98@gmail.com>
Link: https://lore.kernel.org/r/20260620024423.4141004-4-rhkrqnwk98@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
sk_psock_strp_parse() runs the BPF_PROG_TYPE_SK_SKB stream-parser program
to find the length of the next message. strparser assembles a message out
of several received skbs by chaining them onto the head's frag_list and
recording where to append the next one in strp->skb_nextp:
*strp->skb_nextp = skb;
strp->skb_nextp = &skb->next;
and then calls the parser on the head:
len = (*strp->cb.parse_msg)(strp, head);
The parser is only meant to inspect the skb, but the program may call
bpf_skb_change_tail() -- or the sibling bpf_skb_pull_data(),
bpf_skb_change_head(), bpf_skb_adjust_room(), all allowed for SK_SKB.
Once the head carries a frag_list these go
... -> skb_ensure_writable -> pskb_may_pull -> __pskb_pull_tail
and __pskb_pull_tail() frees the frag_list skbs that strparser still
tracks through skb_nextp:
while ((list = skb_shinfo(skb)->frag_list) != insp) {
skb_shinfo(skb)->frag_list = list->next;
consume_skb(list);
}
strp->skb_nextp now points into a freed sk_buff. The next segment of
the same message arrives in __strp_recv(), which links it with
*strp->skb_nextp = skb, an 8-byte write into the freed skb. The free
and the write happen in different __strp_recv() calls, so the message
has to span at least three segments before it triggers.
BUG: KASAN: slab-use-after-free in __strp_recv+0x447/0xda0
Write of size 8 at addr ffff88810db86140 by task repro/349
Call Trace:
<IRQ>
__strp_recv+0x447/0xda0
__tcp_read_sock+0x13d/0x590
tcp_bpf_strp_read_sock+0x195/0x320
strp_data_ready+0x267/0x340
sk_psock_strp_data_ready+0x1ce/0x350
tcp_data_queue+0x1364/0x2fd0
tcp_rcv_established+0xe07/0x1640
[...]
Allocated by task 349:
skb_clone+0x17b/0x210
__strp_recv+0x2c3/0xda0
__tcp_read_sock+0x13d/0x590
[...]
Freed by task 349:
kmem_cache_free+0x150/0x570
__pskb_pull_tail+0x57b/0xc20
skb_ensure_writable+0x236/0x260
__bpf_skb_change_tail+0x1d4/0x590
sk_skb_change_tail+0x2a/0x40
bpf_prog_1b285dcd6c41373e+0x27/0x30
bpf_prog_run_pin_on_cpu+0xf3/0x260
sk_psock_strp_parse+0x118/0x1e0
__strp_recv+0x4f6/0xda0
[...]
The same resize also leaves the head's length inconsistent with its
frags, so a later __pskb_pull_tail() can instead hit the
BUG_ON(skb_copy_bits(...)) in net/core/skbuff.c.
A stream parser is only meant to measure the next message, not to modify
the packet. Reject a parser whose program can change packet data
(prog->aux->changes_pkt_data) at attach time. The check is shared by
sock_map_prog_update() and sock_map_link_update_prog(), which between them
cover prog attach, link create and link update. Verdict programs are
unaffected and may still modify the skb.
Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Signed-off-by: Sechang Lim <rhkrqnwk98@gmail.com>
Link: https://lore.kernel.org/r/20260620024423.4141004-3-rhkrqnwk98@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
sockmap_parse_prog.c is attached as an SK_SKB stream parser and modifies
the skb: it calls bpf_skb_pull_data() and writes a byte into the packet.
A stream parser runs on strparser's message head and must not modify it.
A resize frees the frag_list segments strparser still tracks, leading to
a use-after-free.
Make the parser read-only. It only needs to return the message length,
which keeps it attaching once packet-modifying parsers are rejected.
Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Signed-off-by: Sechang Lim <rhkrqnwk98@gmail.com>
Link: https://lore.kernel.org/r/20260620024423.4141004-2-rhkrqnwk98@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
various Qualcomm chips and Canaan K230. Otherwise there's
non-critical fixes and updates to clk data such as adding missing
clks to existing drivers or marking clks critical. Nothing looks
especially exciting.
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"This is all clk driver updates. Mostly new SoC support for various
Qualcomm chips and Canaan K230. Otherwise there's non-critical fixes
and updates to clk data such as adding missing clks to existing
drivers or marking clks critical. Nothing looks especially exciting"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (106 commits)
clk: qcom: regmap-phy-mux: Rework the implementation
clk: qcom: a53: Corrected frequency multiplier for 1152MHz
clk: qcom: camcc-milos: Declare icc path dependency for CAMSS_TOP_GDSC
clk: qcom: gdsc: Support enabling interconnect path for power domain
dt-bindings: clock: qcom,milos-camcc: Document interconnect path
interconnect: Add devm_of_icc_get_by_index() as exported API for users
clk: qcom: camcc-x1p42100: Add support for camera clock controller
clk: qcom: camcc-x1e80100: Add support for camera QDSS debug clocks
clk: qcom: videocc-x1p42100: Add support for video clock controller
dt-bindings: clock: qcom: Add X1P42100 camera clock controller
dt-bindings: clock: qcom: Add X1P42100 video clock controller
clk: keystone: sci-clk: fix application of sizeof to pointer
clk: keystone: don't cache clock rate
clk: spacemit: k3: Add PCIe DBI clock
dt-bindings: soc: spacemit: k3: Add PCIe DBI clock IDs
clk: spacemit: k3: Fix PCIe clock register offset
clk: spacemit: k3: Switch to pll2_d6 as parent for PCIe clock
clk: at91: keep securam node alive while mapping it
clk: samsung: exynos990: Fix PERIC0/1 USI clock types
clk: renesas: r9a08g045: Drop unused pm_domain header file
...
call_on_irq_stack() uses struct member offsets to set up its link in the
frame record list. On riscv32, struct stackframe is the wrong size to
maintain stack pointer alignment, so STACKFRAME_SIZE_ON_STACK includes
padding. However, the ABI requires the frame record to be placed
immediately below the address stored in s0, so the padding must come
before the struct members.
Fix the layout by making STACKFRAME_FP and STACKFRAME_RA the negative
offsets from s0, instead of the positive offsets from sp.
Fixes: 82982fdd51 ("riscv: Deduplicate IRQ stack switching")
Signed-off-by: Samuel Holland <samuel.holland@sifive.com>
Reviewed-by: Matthew Bystrin <dev.mbstr@gmail.com>
Signed-off-by: Rui Qi <qirui.001@bytedance.com>
Link: https://lore.kernel.org/all/20240530001733.1407654-2-samuel.holland@sifive.com/
Reviewed-by: Nam Cao <namcao@linutronix.de>
Link: https://patch.msgid.link/20260624113148.3723541-1-qirui.001@bytedance.com
[pjw@kernel.org: cleaned up the patch tags and added Matthew's Reviewed-by]
Signed-off-by: Paul Walmsley <pjw@kernel.org>
kernel doc cleanup and a kzalloc flex usage.
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Merge tag 'spmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi
Pull SPMI updates from Stephen Boyd:
"Support for Qualcomm PMIC arbiter v8.5 and Hawi along with a
kernel doc cleanup and a kzalloc flex usage"
* tag 'spmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi:
spmi: use kzalloc_flex in main allocation
spmi: clean up kernel-doc in spmi.h
spmi: spmi-pmic-arb: add support for PMIC arbiter v8.5
dt-bindings: spmi: glymur-spmi-pmic-arb: Add compatible for Qualcomm Hawi SoC
