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1,482,218 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Usama Arif
|
f6f47a9ca8 |
squashfs: avoid thundering-herd cache wakeups
squashfs_cache_get() puts a task to sleep when its block is not cached and
every cache entry is busy. Those sleeps are non-exclusive, so the
nr_exclusive == 1 budget squashfs_cache_put() has always passed to
wake_up() is inert and one release makes every waiter runnable. A wakee
only returns to squashfs_cache_get() if it observes cache->unused before
the entry is reclaimed; later wakees see zero and re-queue inside
wait_event() without rescanning. One freed entry satisfies exactly one
capacity waiter, so waking the rest is waste.
On a Meta production host serving a Python web application from a packaged
squashfs image, a 30-second trace caught 1,045,132 cache-release wake
calls and 19,511,556 wakeups: 18.7 per release, although each release
added only one reusable cache entry. This was causing significant spikes
in CPU usage.
Make the waits exclusive, enqueueing while still holding cache->lock so
that a concurrent lookup either sees the waiter queued or the waiter sees
the block that lookup publishes. Two things follow.
A wakee cannot be assumed to consume the entry it was woken for: it may
find its own block published meanwhile, share that entry, and leave the
freed one unclaimed. So a wakee which shares hands its wakeup on to the
next waiter, as commit
|
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Bradley Morgan
|
5146e0688d |
prctl: fix PR_SET_MM_AUXV losing the forced AT_NULL terminator
prctl_set_auxv() copies the user vector into a stack buffer, forces
AT_NULL on the last two entries there, and then copies only len bytes into
mm->saved_auxv. Which is fine until the vector is shorter than the
buffer, because then the forced terminator sits past the end of the copy
and never lands in saved_auxv at all.
The code even says
/* Make sure the last entry is always AT_NULL */
and it does, just not in the part that gets copied.
So mm->saved_auxv keeps the stale tail from exec. Reproducing it is easy:
from a process with CAP_SYS_RESOURCE (just run it as root), call
prctl(PR_SET_MM, PR_SET_MM_AUXV, ...) with a vector that has a couple of
entries and no AT_NULL inside len (32 bytes on arm64), and then hexdump
/proc/self/auxv, or gcore the process and look at the AUXV note with
readelf -n. This is arm64, the new vector was just { AT_UID, 0x1111,
AT_GID, 0x2222 }:
idx before (from exec) after the prctl
[0] AT_SYSINFO_EHDR 0x7ed1d6e000 AT_UID 0x1111 <- new
[1] AT_MINSIGSTKSZ 0x1270 AT_GID 0x2222 <- new
[2] AT_HWCAP 0x119fff AT_HWCAP 0x119fff <- stale
[3] AT_PAGESZ 0x1000 AT_PAGESZ 0x1000 <- stale
... 16 more entries ... <- stale
[20] AT_NULL 0x0 AT_NULL 0x0
21 entries before the prctl, still 21 after: the two new ones plus all 19
left over from exec.
Every consumer walks the vector until AT_NULL, so what they get now is a
vector that never existed at exec, the head from the prctl glued onto the
tail of the old binary. gdb and crash pull the AUXV note out of coredumps
to find AT_PHDR, AT_ENTRY, AT_SYSINFO_EHDR and friends, and a mixed vector
points them at the wrong layout. /proc/<pid>/auxv and PR_GET_AUXV hand
the same mess out to live processes too. Nothing crashes, everything just
quietly reads a frankenstein auxv.
And callers that terminate their own vector hide the whole thing, which is
likely why nobody noticed since PR_SET_MM_AUXV landed in 2012. Nothing
exciting security wise either, I mean it needs CAP_SYS_RESOURCE to begin
with.
prctl_set_mm_map() right above already copies the whole buffer for exactly
this reason, so just do the same here. user_auxv is zero initialized and
only partially filled from userspace, so the rest is zeros and nothing
leaks.
Link: https://lore.kernel.org/20260809002901.32591-1-include@grrlz.net
Fixes:
|
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Linfeng Sun
|
dfe88f832f |
mailmap: update email address for Linfeng Sun
1. Update my university email to my personal Gmail, as the former will expire after graduation. 2. Fix a typo in my Gmail domain. Link: https://lore.kernel.org/20260810073235.22980-1-linfeng.sun.dev@gmail.com Signed-off-by: Linfeng Sun <linfeng.sun.dev@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Karl Mehltretter
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d9c0fd5533 |
lib/interval_tree: fix allocation warning messages
WARN_ON_ONCE() takes a condition, not a message. The string literals are
always true, so the warnings still trigger but the messages are never
printed.
Use WARN_ONCE(1, ...) instead to print the messages and keep the once-only
behavior.
Found with a Coccinelle script. Clang's -Wstring-conversion also flags
such calls but is not enabled in kernel builds.
Link: https://lore.kernel.org/20260808123608.73613-1-kmehltretter@gmail.com
Fixes:
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Dave Airlie
|
c44e278ce0 |
Linux 7.2
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Linus Torvalds
|
a4ff2be345 |
This update includes the following changes:
API: - Add af_alg_restrict sysctl and white list. - Fix potential suspend/resume races in hwrng. Algorithms: - Optimize vli additive operations using compiler builtins in ecc. Drivers: - Remove unsafe/deprecated algorithms from qce. - Mark qce as BROKEN. - Add runtime PM and interconnect bandwidth scaling support to qce. - Remove crypto_rng from qcom, sun8i and caam. - Fix SG list issues in iaa. - Fix SEV init path bugs in ccp. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmqEC3gACgkQxycdCkmx i6fOCw/9EzjhD0xotKv0Kylk/ukG+UYhh2j1zwFbMUuRl0GQCklSfM19h0DQ53vS FgJqf+69Q9sfn2HxihxQJGkW+NmiqwlHG9veu2PRBXRnMDjFQ8LDHAVEShvL4Jzv PW9daF3KsOjlcFuOVHum9SdQ2tdsoClEtBv8W9ndOxxGxGj3827etOWSTTp4DprP y2bpcE3R+CjmOgATmAQfOiKdLtghv8SspSRUmwVmj8lVijkjTiH9UELwQ4Tp407q vZU027gBHaWKb4VBLPX3NUg0UaJFsieKGrty2EZqX0nXF4f2jaPYB1iP9Y+92qcP WfvidNpVeLpRlJpf5QH1ZqiH7qf9I1YdOXcNe8IL+3b+9SYiyqDY3vuCeBE05dOJ Oty9m8pIV7IwZmhUIhZ0PdIl58urzxYPvCdD0IdAsA0sdNQEBcbTnuVuQjxt4AG0 GYPqiZdtRs5r3MkdRpymV49TBJ+vMY3Wo1lnCcnpCgxugTAx7tkFtMNBJSHF7DbC N1vwb2EYaTyzmH5Vr3dHLWeONskyIRa0WNhnszmIBie3M0AYF2sOkNw3iXVPQxXv a5XbXh/kAx0nc417dp1B8lZclHH2bWvEKHYalpT33GX4qsGuI4bH4uKaOrL0pXp1 WyNzGiCiWJBp2o9wNj/TxKCp7oGeD4ZRv0HeRrEHezSInoTrt9w= =f9oK -----END PGP SIGNATURE----- Merge tag 'v7.3-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 Pull crypto update from Herbert Xu: "API: - Add af_alg_restrict sysctl and white list - Fix potential suspend/resume races in hwrng Algorithms: - Optimize vli additive operations using compiler builtins in ecc Drivers: - Remove unsafe/deprecated algorithms from qce - Mark qce as BROKEN - Add runtime PM and interconnect bandwidth scaling support to qce - Remove crypto_rng from qcom, sun8i and caam - Fix SG list issues in iaa - Fix SEV init path bugs in ccp" * tag 'v7.3-p1' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (122 commits) crypto: lskcipher - propagate errors from unaligned crypt crypto: keembay - use crypto_memneq() to compare CCM AEAD tags crypto: keembay - use crypto_memneq() to compare GCM AEAD tags crypto: sa2ul - use crypto_memneq() to compare AEAD tag hwrng: drivers - use named initializers for acpi_device_id crypto: qce - fix CCM AAD buffer underallocation crypto: iaa - unmap dst before software fallback on decompress crypto: iaa - use bounce buffer for multi-sg decompress input crypto: iaa - avoid counting fallback decompression bytes crypto: iaa - fall back to software for multi-entry scatterlists hwrng: core - Stop/start hwrng_fillfn() kthread before/after suspend-resume crypto: hisilicon/sec2 - fix CCM algorithm long packet failure crypto: eip93 - use struct_size() and flexible array for ring allocation crypto: krb5 - use kfree_sensitive() for derived key buffers crypto: af_alg - Stop after finding name in allowlist crypto: af_alg - Replace 'bool privileged' with flags crypto: af_alg - Make cbc(paes) privileged-only hwrng: imx-rngc - Disable clock on registration failure crypto: qat - remove dead ADF_HEX code crypto: qce - simplify qce_handle_request ... |
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Linus Torvalds
|
a51ec5e8e5 |
integrity-v7.3
-----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQQdXVVFGN5XqKr1Hj7LwZzRsCrn5QUCaoTvgxQcem9oYXJAbGlu dXguaWJtLmNvbQAKCRDLwZzRsCrn5dC1AP9Byw49KACrNM8vvic/MTB4i3azMbFU ZNbcXgj9xRwyngD/fjwktpYUwEvgMIDybIu0Tr+CXUwoI8vrmPZpsvkeUwI= =eSwF -----END PGP SIGNATURE----- Merge tag 'integrity-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity Pull integrity updates from Mimi Zohar: - TPM initialization is sometimes delayed until deferred_probe_initcall Since ordering is not guaranteed within the same initcall level, IMA may initialize before the TPM and fall back to TPM-bypass mode. A new config option, CONFIG_IMA_INIT_LATE_SYNC, allows those building the kernel to defer IMA initialization to late_initcall_sync, accepting the integrity risk of missing early measurements in exchange for avoiding TPM-bypass mode. - The raw policy rules are now measured, as well as the complete policy, closing a gap in integrity measurement coverage * tag 'integrity-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity: ima: measure userspace policy writes before parsing ima: add critical data measurement for loaded policy security: ima: rename boot_aggregate when ima is initialised at late_sync security: ima: introduce IMA_INIT_LATE_SYNC option security: lsm: allow LSMs to register for late_initcall_sync init |
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Linus Torvalds
|
cbad8981fa |
Patches for v7.3
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||
|
Linus Torvalds
|
09005a6398 |
lsm/stable-7.3 PR 20260814
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Linus Torvalds
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4253eb09d2 |
selinux/stable-7.3 PR 20260814
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Linus Torvalds
|
83453b6f51 |
audit/stable-7.3 PR 20260814
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Linkai Gong
|
ca45cfa743 |
rtc: gamecube: check return value of devm_rtc_register_device()
gamecube_rtc_probe() ignored the return value of
devm_rtc_register_device() and always returned success. Propagate the
error so probe fails when RTC registration fails.
Fixes:
|
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Robert Leussler
|
878d93aaa5 |
rtc: ds1307: fix RX8130 wakeup alarm WADA bit for day-of-month mode
The RX8130 wakeup alarm never fired when set via /sys/class/rtc/rtc0/wakealarm. The root cause is that the WADA bit (bit 3) in the Extension register (0x1c) was never set before programming the alarm registers. Per the RX8130 datasheet: WADA=0 - Week alarm: register 0x19 is compared against day-of-week WADA=1 - Day alarm: register 0x19 is compared against day-of-month rx8130_set_alarm() always writes a BCD day-of-month value to alarm register 0x19, so WADA must be 1. With WADA=0 the hardware matched the day-of-month value (e.g. 15) as a day-of-week index, which is always out of range (valid weekdays are 0-6), so the alarm interrupt was never asserted. Fix by setting the WADA bit in rx8130_set_alarm() before writing the Extension register back to the device. This is consistent with rx8130_read_alarm(), which decodes the same register under the same assumption (24-hour and day-of-month mode). Signed-off-by: Robert Leussler <robert.leussler@leica-geosystems.com> Link: https://patch.msgid.link/20260721081907.3518648-1-robert.leussler@leica-geosystems.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> |
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Sang-Heon Jeon
|
b1407862fb |
rtc: pcf2127: remove conditional return with no effect
Both branches of the check return the same value, so the check has no effect. Remove it and return the value directly. This is the result of running the Coccinelle script from scripts/coccinelle/misc/cond_return_no_effect.cocci. Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com> Reviewed-by: Bruno Thomsen <bruno.thomsen@gmail.com> Link: https://patch.msgid.link/20260723184538.3888637-30-ekffu200098@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> |
||
Eduard Bostina
|
4d31434fea |
dt-bindings: rtc: Convert TI Palmas RTC to DT schema
Convert the Texas Instruments Palmas RTC controller bindings to DT schema. As part of the conversion, declare 'wakeup-source: true'. This documents the Palmas PMIC's capability to wake the system. Signed-off-by: Eduard Bostina <egbostina@gmail.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20260719141008.3562347-2-egbostina@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> |
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Teja Sai Charan Bellamkonda
|
745ca1b959 |
dt-bindings: rtc: Convert rtc-cmos binding to YAML
Convert the rtc-cmos devicetree bindings to dt schema. The original text binding documents only the motorola,mc146818 compatible. Existing in-tree Devicetree sources also use the intel,ce4100-rtc compatible together with the motorola,mc146818 fallback, but this was not documented. Document the Intel variant in the schema so that these existing configurations are accepted during schema validation. Signed-off-by: Teja Sai Charan Bellamkonda <tejaasaye@gmail.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com> Link: https://patch.msgid.link/20260709221944.159244-1-tejaasaye@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> |
||
Udaya Kiran Challa
|
1190db8edc |
dt-bindings: rtc: microchip,pic32mzda-rtc: Convert to DT schema
Convert Microchip PIC32 Real Time Clock and Calendar devicetree binding from legacy text format to DT schema. Signed-off-by: Udaya Kiran Challa <challauday369@gmail.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Link: https://patch.msgid.link/20260703110442.205026-1-challauday369@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> |
||
|
Linus Torvalds
|
cb8a75eec0 |
ring-buffer updates for 7.3:
- Remove unneeded semicolon A macro ended with a semicolon that wasn't needed. - Fix freeing cpu_buffer extra subbuffer with order greater than zero When the cpu_buffer was being freed, its "free" page, was using free_page() to free it when it could be more than one page. - Hold the cpu_buffer lock when resizing the subbuffer The freeing of the "free" page of the cpu_buffer was done without locking. The order of the data was being saved and then the "free" page was set to NULL. But there is a race that the "free" page could have been updated between those two operations. Add locking around it to prevent the race. - Save the order of the data along with the data in the free page The cpu_buffer would store just the data portion of the subbuffer page in its descriptor. But it did not store the order of the data pages. The order was being saved in the global buffer descriptor. But this leads to races. Have the cpu_buffer save the subbuf data along with its metadata (which includes the order of the page) to make sure when it frees it, it frees the correct order along with it. - Remove the subbuf_size and use the order directly when needed Having a size field for the size of the subbufer along with its order allowed for races to have them get out of sync. Remove the subbuf_size and use the order from the subbuf meta data directly under locks. Use the subbuf_order for other calculations in the ring buffer. - Remove the useless "cpus" field of trace_buffer The code has been restructured and the "cpus" field is no longer used. Remove it. - Remove the "mapped" field of the ring buffer and use a helper function instead. The "mapped" field has become a bit overused and made the code come complex in using a counter for what is denoted as being mapped or not. There are other fields that are set when the ring buffer is considered mapped. Add a helper function to check those fields and use that instead of keeping track of a counter. -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCaoC9jxQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qlJwAQDG/FAI6Zr4f2jUIoEWPL7KGkhmHeuv rP1bIJVeIoy+RgEA+vjq6PNNGvN2DO0qnotu5UAhHxywM1KaUKQjOCDaJQI= =f8Ym -----END PGP SIGNATURE----- Merge tag 'trace-ringbuffer-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull ring-buffer updates from Steven Rostedt: - Remove unneeded semicolon A macro ended with a semicolon that wasn't needed. - Fix freeing cpu_buffer extra subbuffer with order greater than zero When the cpu_buffer was being freed, its "free" page, was using free_page() to free it when it could be more than one page. - Hold the cpu_buffer lock when resizing the subbuffer The freeing of the "free" page of the cpu_buffer was done without locking. The order of the data was being saved and then the "free" page was set to NULL. But there is a race that the "free" page could have been updated between those two operations. Add locking around it to prevent the race. - Save the order of the data along with the data in the free page The cpu_buffer would store just the data portion of the subbuffer page in its descriptor. But it did not store the order of the data pages. The order was being saved in the global buffer descriptor. But this leads to races. Have the cpu_buffer save the subbuf data along with its metadata (which includes the order of the page) to make sure when it frees it, it frees the correct order along with it. - Remove the subbuf_size and use the order directly when needed Having a size field for the size of the subbufer along with its order allowed for races to have them get out of sync. Remove the subbuf_size and use the order from the subbuf meta data directly under locks. Use the subbuf_order for other calculations in the ring buffer. - Remove the useless "cpus" field of trace_buffer The code has been restructured and the "cpus" field is no longer used. Remove it. - Remove the "mapped" field of the ring buffer and use a helper function instead. The "mapped" field has become a bit overused and made the code come complex in using a counter for what is denoted as being mapped or not. There are other fields that are set when the ring buffer is considered mapped. Add a helper function to check those fields and use that instead of keeping track of a counter. * tag 'trace-ringbuffer-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: ring-buffer: Remove ring_buffer_per_cpu::mapped ring-buffer: Remove trace_buffer::cpus ring-buffer: Dynamically calculate max_data_size ring-buffer: Fix subbuf resize race with ring_buffer_alloc_read_page() ring-buffer: Fix subbuf resize race with ring buffer readers ring-buffer: Make cpu_buffer::free_page a buffer_data_read_page ring-buffer: Hold cpu_buffer::lock when resizing a subbuf ring-buffer: Free cpu_buffer::free_page with subbuf_order ring-buffer: drop unneeded semicolon |
||
Bhargav Joshi
|
315d11a891 |
dt-bindings: rtc: ti,omap-rtc: Convert to DT schema
Convert the Texas Instruments OMAP Real Time Clock (RTC) binding from the legacy text format to the DT schema. Mark 'ti,hwmods' as deprecated as it is no longer used, it is kept to support legacy boards. Signed-off-by: Bhargav Joshi <j.bhargav.u@gmail.com> Reviewed-by: Rob Herring (Arm) <robh@kernel.org> Link: https://patch.msgid.link/20260804-ti-omap-rtc-v3-4-ba3bbd8af570@gmail.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> |
||
|
Linus Torvalds
|
1484625c59 |
tracefs updates for v7.3:
- Define event fields before directory creation Move the event_define_fields() call in event_create_dir() before the eventfs directory creation. Previously, a failure after directory creation wouldn't clean up eventfs_inode because the error path didn't call eventfs_remove_dir(). This eliminates the need to clean up the eventfs directories if event_define_fields() fails. - Add warning for out of bounds pos in __eventfs_iterate() Sashiko complains about the ctx->pos causing issues if it is less than 2 or greater than MAX_INT in __eventfs_iterate(). The thing is, the logic prevents that from happening. But to make Sashiko happy, add a WARN_ON() and exit safely if the function ever does get input that is out of the range the function expects. -----BEGIN PGP SIGNATURE----- iIoEABYKADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCan+ZvBQccm9zdGVkdEBn b29kbWlzLm9yZwAKCRAp5XQQmuv6qtTfAQC+70AlkM07/RxLkS6GYEEoJ1orM/CO eheyYNZvdjovogEAoUjt0VO+PEcqKDkIdCpx3l9M4hu+B7hN51S2gdEz8gE= =EqMA -----END PGP SIGNATURE----- Merge tag 'tracefs-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull tracefs updates from Steven Rostedt: - Define event fields before directory creation Move the event_define_fields() call in event_create_dir() before the eventfs directory creation. Previously, a failure after directory creation wouldn't clean up eventfs_inode because the error path didn't call eventfs_remove_dir(). This eliminates the need to clean up the eventfs directories if event_define_fields() fails. - Add warning for out of bounds pos in __eventfs_iterate() Sashiko complains about the ctx->pos causing issues if it is less than 2 or greater than MAX_INT in __eventfs_iterate(). The thing is, the logic prevents that from happening. But to make Sashiko happy, add a WARN_ON() and exit safely if the function ever does get input that is out of the range the function expects. * tag 'tracefs-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: eventfs: Add warning for out of bounds pos in __eventfs_iterate() eventfs: Define event fields before directory creation |
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Oliver Upton
|
aa8e5dc6a7 |
Merge branch 'kvm-arm64/misc-7.3' into next
* kvm-arm64/misc-7.3: : Miscellaneous fixes for KVM/arm64, 7.3 : : - Fixes for saving invalid table entries as part of saving the ITS : tables (Fuad Tabba) : : - Don't reallocate the SPI array for re-attempted vgic_init(), avoiding : a memory leak (Fuad Tabba) : : - Hold a reference on an LPI when saving the pending state (Qihang) : : - Don't WARN for out-of-range, guest-supplied INTID (Karl) : : - Avoid corrupting GPRs for 32-bit CP64 reads (Karl) : : - Reset 'in kernel' VGIC state when private IRQ allocation fails (Fuad) : : - Avoid kallsyms lookup in nVHE panic unless the host stage-2 is also : disabled (Vincent) : : - Disregard Pending+Active state when computing maintenance IRQ for : ICH_MISR_EL2.NP (Kajetan) : : - Various Sashiko-identified issues dealing with GICv5 (Sascha) : : - Fix CPU onlining in pKVM due to mismatched accesses when the MMU is : disabled (Will) KVM: arm64: Validate GICv5 timer PPIs before claiming ownership KVM: arm64: vgic: Reject out-of-range GICv5 PPI IDs KVM: arm64: vgic: Prevent speculative SPI array underflow KVM: arm64: vgic: Free gic_kvm_info on initialization failure KVM: arm64: Avoid mismatched accesses to 'struct kvm_nvhe_init_params' KVM: arm64: vgic: Fix detection of MI on no pending LR KVM: arm64: Drop %pB on nVHE panic when stage-2 is active KVM: arm64: vgic: Reset in_kernel on private IRQ allocation failure KVM: arm64: GICv2: Don't WARN on out-of-range GICV_DIR INTID KVM: arm64: Preserve GPRs for AArch32 CP64 reads generating an UNDEF KVM: arm64: vgic-v3: take an LPI reference in vgic_v3_save_pending_tables KVM: arm64: vgic-its: Point saved ITEs at the next valid entry KVM: arm64: vgic-its: Don't save collections the table cannot hold KVM: arm64: vgic: Don't leak the SPI array when init is retried KVM: arm64: vgic-its: Don't dereference a NULL collection on ITT save Signed-off-by: Oliver Upton <oupton@kernel.org> |
||
|
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.
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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
...
|
||
|
Oliver Upton
|
2791de5354 |
Merge branch 'kvm-arm64/vtr-patch' into next
* kvm-arm64/vtr-patch: : Inline patching of ICH_VTR_EL2 constant, courtesy of Marc Zyngier : : Unify readers of ICH_VTR_EL2 on an instruction-patched constant value, : avoiding system register accesses known to trap under nested : virtualization and sharing the implementation between pKVM and 'regular' : KVM. KVM: arm64: vgic-v3: Kill kvm_vgic_global_state.ich_vtr_el2 KVM: arm64: vgic-v3: Simplify initial GICv3 configuration sampling KVM: arm64: Convert most ICH_VTR_EL2 accesses to inlined literal value KVM: arm64: Add a helper providing an inlined literal value for ICH_VTR_EL2 KVM: arm64: Move GICv3 broken SEIS implementation detection to a CPU errrata KVM: arm64: vgic-v3: Make vtr_to_* helpers use architectural field symbols Signed-off-by: Oliver Upton <oupton@kernel.org> |
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|
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 ... |
||
Zqiang
|
7e2f2a377a |
workqueue: Use raise_softirq() to trigger softirq in irq_work handler
bh_pool_kick_normal() and bh_pool_kick_highpri() are registered via
init_irq_work() without the IRQ_WORK_HARD_IRQ flag. On PREEMPT_RT, such
irq_work items are processed by the per-CPU irq_workd kthread in preemptible
task context with IRQs enabled. However, raise_softirq_irqoff() requires
IRQs to be disabled. Calling it from irq_workd trips the lockdep assertion
in __raise_softirq_irqoff() and the non-atomic update of the softirq pending
mask can lose bits raised by an interrupt on the same CPU. Replace
raise_softirq_irqoff() with raise_softirq() in the irq_work handlers.
Fixes:
|
||
Wolfram Sang
|
7a79b02dd1 |
i2c: rcar: fix reset handling for Gen5
Missing reset_control_status() support is not Gen5 specific. It depends
on the firmware used, if any. Refactor the code to handle missing
reset_control_status() more generically.
Fixes:
|
||
Hemanth Selam
|
0c893d170f |
selftests/cgroup: set the test plan after the setup checks
The cgroup tests announce their plan before checking whether cgroup v2 is
available, so on a host without it they promise a number of results and
then skip out after the first one:
TAP version 13
1..3
ok 1 # SKIP cgroup v2 isn't mounted
# Planned tests != run tests (3 != 1)
# Totals: pass:0 fail:0 xfail:0 xpass:0 skip:1 error:0
ksft_exit_skip() can only emit a well formed "1..0 # SKIP" line while no
plan has been printed, as the comment above it in kselftest.h points out.
Move ksft_set_plan() below the setup checks that can skip, so that a
skipped run reports:
TAP version 13
1..0 # SKIP cgroup v2 isn't mounted
Several of the tests skip more than once while setting up, for a missing
or unwritable controller as well, so the plan goes after the last of
them. test_core joins its two setup paths at the post_v2_setup label and
sets the plan there.
Reporting each planned test as skipped instead would keep the plan where
it is, but the setup failures here mean the whole test cannot run rather
than its individual cases being skipped, which is what "1..0 # SKIP" is
for.
Fixes:
|
||
Liang Luo
|
4fb8d6379d |
sched_ext: Fix nonexistent field in sched-ext.rst example
The ops.exit() example in sched-ext.rst reads ei->type, but
struct scx_exit_info has never had a type field - the exit reason is
exposed as ei->kind since the struct was introduced. A scheduler
written following the example fails to compile with
error: no member named 'type' in 'struct scx_exit_info'
Use ei->kind.
Fixes:
|
||
Ruoyu Wang
|
777979e627 |
i2c: mxs: fix DMA channel leak on probe error
mxs_i2c_probe() requests an exclusive DMA channel before resetting the
controller and registering the I2C adapter. If either later operation
fails, probe returns without releasing the channel because the remove
callback is not invoked after a failed probe.
Use devm_dma_request_chan() so the device core releases the channel on
probe failure and driver detach. Remove the manual release from the
remove callback because the channel is now device-managed.
This issue was found by a static analysis checker and confirmed by
manual source review.
Fixes:
|
||
|
Linkai Gong
|
62edb8ca0a |
i2c: mux: demux-pinctrl: fix OF node leak on kstrdup failure
of_parse_phandle() takes a reference on the parent node. If a later
devm_kstrdup() fails, err_rollback only releases nodes for indices
0..i-1, so the current node is leaked.
of_node_put() the current parent before rolling back.
Fixes:
|
||
|
Ruoyu Wang
|
43eb13f133 |
i2c: ocores: Disable clock on failed resume
ocores_i2c_resume() enables the controller clock before reinitializing
the hardware. If the clock rate changed while the device was suspended,
ocores_init() may reject the resulting prescaler. The callback then
returns an error with the clock still enabled, while the controller
itself remains disabled.
Disable and unprepare the clock when ocores_init() fails so the failed
resume path balances the successful clk_prepare_enable() call.
This issue was found by a static analysis checker and confirmed by manual
source review.
Fixes:
|
||
Carlos Song
|
a4c419356a |
i2c: imx-lpi2c: reset controller in probe stage
Reset I2C controller in probe stage to avoid unexpected LPI2C controller state left from previous stages and hang system boot. Per the LPI2C reference manual, section 7.1.4 "Controller Control (MCR)" and 7.1.20 Target Control (SCR), the RST bit (bit 1) description states: "The reset takes effect immediately and remains asserted until negated by software. There is no minimum delay required before clearing the software reset." Therefore, it is safe to write 0 to MCR and SCR immediately after asserting the RST bit without any additional delay. Signed-off-by: Carlos Song <carlos.song@nxp.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Andi Shyti <andi.shyti@kernel.org> Link: https://lore.kernel.org/r/20260716071957.2670263-3-carlos.song@oss.nxp.com |
||
|
Carlos Song
|
cbd043b00e |
i2c: imx-lpi2c: properly unwind resources on probe failure
When probe fails at devm_clk_rate_exclusive_get() or clk_get_rate(), which occur before runtime PM is initialized, the clocks enabled by clk_bulk_prepare_enable() are never disabled. When probe fails after runtime PM is initialized, the previous error path called pm_runtime_put_sync(), which triggers the runtime suspend callback. However, due to different clock management strategies on different SoCs[1] (to avoid deadlocks between the global prepare_lock and runtime PM), the callback may only disable clocks without unpreparing them, causing an incomplete unwind. Introduce a new error label 'clk_disable' to explicitly invoke clk_bulk_disable_unprepare(). Replace pm_runtime_put_sync() with the sequence of pm_runtime_disable(), pm_runtime_set_suspended() and pm_runtime_put_noidle() to bypass the runtime suspend callback during error recovery. During the LPI2C driver probe phase, clock APIs are used exclusively to manage clocks. Once probing succeeds, clock management is handed over to the runtime PM core. [1] https://lore.kernel.org/all/20251125084718.2156168-1-carlos.song@nxp.com/ Signed-off-by: Carlos Song <carlos.song@nxp.com> Reviewed-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Andi Shyti <andi.shyti@kernel.org> Link: https://lore.kernel.org/r/20260716071957.2670263-2-carlos.song@oss.nxp.com |
||
Pei Xiao
|
d1f112e2fa |
i2c: busses: drop redundant dev_err_probe() around irq helpers
platform_get_irq(), devm_request_irq() and devm_request_threaded_irq() already print an error message via dev_err_probe() on failure, so wrapping their return value with another dev_err_probe() results in duplicate error output. Drop these redundant dev_err_probe() calls across i2c bus drivers and return the error code directly instead. Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn> Signed-off-by: Andi Shyti <andi.shyti@kernel.org> Link: https://lore.kernel.org/r/aea09858af6be39497325e2560267771ed62e6b0.1784537126.git.xiaopei01@kylinos.cn |
||
|
Linus Torvalds
|
98f21c54f9 |
fwctl 7.3 pull request
- Support more commands in bnxt, this completes what they originally wanted to do - Rust bindings for fwctl. The Nova GPU is expected to use them next cycle -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQRRRCHOFoQz/8F5bUaFwuHvBreFYQUCaoTy/QAKCRCFwuHvBreF YSmUAP9Q2O8BpR9sR/+0VufAXEmEnILMnqPbi1nSSCmuZd3cegEA4kwkE7wAvTcE 1LYoZBQ2n2YYQDO6ykTY1oTY4IauhwE= =uCFZ -----END PGP SIGNATURE----- Merge tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/fwctl/fwctl Pull fwctl updates from Jason Gunthorpe: - Support more commands in bnxt, this completes what they originally wanted to do - Rust bindings for fwctl. The Nova GPU is expected to use them next cycle * tag 'for-linus-fwctl' of git://git.kernel.org/pub/scm/linux/kernel/git/fwctl/fwctl: rust: introduce abstractions for fwctl fwctl/bnxt: Add DMA buffer support for HWRM commands bnxt_en: Update bnxt firmware spec |
||
Ryan Chen
|
b76eee9c21 |
irqchip/ast2700-intc: Avoid allocating in the irq_domain activate() callback
The interrupt core calls the irq_domain_activate() callback from
__setup_irq() with desc->lock held and interrupts disabled. Both
aspeed_intc1_irq_domain_activate() and aspeed_intc0_resolve_route() test a
compatible string with fwnode_device_is_compatible().
fwnode_device_is_compatible() invokes fwnode_property_match_string(), which
allocates with GFP_KERNEL. That's obviously not possible with interrupts
disabled and a raw spinlock held.
Both call sites are only ever handed OF nodes, so use
of_device_is_compatible() instead: it walks the property in place and does
not allocate.
Fixes:
|
||
|
Linus Torvalds
|
85e0d1de36 |
iommufd v7.3 merge window pull request
Small update this cycle:
- Formal API for "no iommu" mode in VFIO. iommufd now works in this
environment and provides page pinning and phyiscal address services to
userspace. This avoids nasty fragile tricks with mprotect and pgmap
- Fix sykzaller crash racing change_process with map_pages
- Various skyzkaller/AI fixes for the selftests
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe:
"One small feature this cycle, the noiommu mode is useful in
single-purpose VMs running something like DPDK. It avoids the double
translation overhead and it seems to be commonly used with some hacks.
Summary:
- Formal API for "no iommu" mode in VFIO. iommufd now works in this
environment and provides page pinning and phyiscal address services
to userspace. This avoids nasty fragile tricks with mprotect and
pgmap
- Fix sykzaller crash racing change_process with map_pages
- Various skyzkaller/AI fixes for the selftests"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
iommufd: Fix UAF in selftest IOPF reporting
iommu/iommufd: Fix NULL pointer deref in iommufd_ioas_change_process when racing with iopt_map_file_pages
Documentation: Update VFIO NOIOMMU mode
vfio: Enable cdev noiommu mode under iommufd
iommufd: Add an ioctl to query PA from IOVA for noiommu mode
iommufd: Allow binding to a noiommu device
iommufd: Move igroup allocation to a function
iommufd: Support a HWPT without an iommu driver for noiommu
iommufd: Simplify iommufd_device_remove_vdev()
iommufd: Fix grammar and spelling in comments
iommu: Fix dev_iommu memory leak when device_add fails in iommu_mock_device_add
iommufd/selftest: Fix dmabuf leak in iommufd_test_dmabuf_get()
iommufd/selftest: Avoid selftest dirty bitmap size wrap
|
||
Biju Das
|
50b10bd0c2 |
irqchip/renesas-rzg2l: Fix loss of interrupt
rzg2l_clear_irq_int() and rzg2l_clear_tint_int() perform a
read-modify-write on the ISCR/TSCR status registers to clear the bit
for the interrupt just handled. Since these registers are
write-0-to-clear per bit, this is racy:
If another interrupt's status bit gets set between the read and the write,
that bit is written back as 0 by the software-constructed value, clearing
an interrupt that hasn't been serviced yet and losing it.
This can be reproduced by triggering multiple interrupts at once, e.g.:
gpioset -c gpiochip0 355=0 353=0 328=0 352=0
Fix this by writing back only the bit being cleared, with all other bits
set to 1, instead of read-modify-writing the whole register. Since 1-bits
are left unchanged by hardware, concurrently-set status bits for other
interrupts are preserved.
Fixes:
|
||
|
Linus Torvalds
|
4994ef0fe0 |
IOMMU updates for Linux v7.3:
- ARM SMMUv2:
- Device-tree binding updates for Qualcomm Eliza, Maili, Shikra and
IPQ9650 SoCs.
- Add support for Qualcomm SM8450.
- Numerous fixes for lifetime and ordering issues found by Sashiko in
the Qualcomm driver.
- ARM SMMUv3:
- Fix interrupt type in device-tree binding example for NVIDIA CMDQV.
- Numerous fixes for issues identified by Sashiko in the NVIDIA CMDQV
driver.
- Work around TLB erratum T264-SMMU-3 on Tegra264 by repeating the
invalidation sequence.
- Add support for HAFT (hardware access flag in table entries) when
using SVA.
- Probe for 52-bit addressing with a page size smaller than 64k ('DS')
but don't do anything with it for now.
- Minor driver improvements (remove sort_nonatomic(), use
readl_relaxed_poll_timeout_atomic(), fix IOPF teardown ordering).
- Intel VT-d:
- Consolidation of complex enablement logic into a clean, priority-based
state machine.
- Support for the DMA_REMAP_OPT_OUT flag from the VT-d v5.2
specification.
- An update to cache_tag_flush_devtlb_psi() to use full-range constants
instead of modifying shared variables for CACHE_TAG_NESTING_DEVTLB.
- A fix for the UCTP context-table slot when copying root entries.
- Fixes for several pre-existing issues reported by Sashiko.
- General code cleanup and refinement.
- AMD IOMMU:
- Add SNP page-mode-0 support, enabling passthrough, v2 DMA page
tables and host SVA on supporting systems.
- Fix invalid PPR handling, COMPLETE_PPR responses and guest-mode
reporting.
- Improve Southbridge IOAPIC validation and remove the dependency on
hard-coded device IDs.
- Fix PCI-device lifetime, debugfs and diagnostic issues.
- IOMMU core and IOMMUFD:
- Restore serialization of the shared MSI-page list.
- Fix SVA-handle publication and several IOMMUFD reference and error
path leaks.
- Return the expected zero result for invalid generic page-table
translations.
- Allocate per-CPU IOVA magazines lazily to reduce memory use on
large systems.
- PCI ATS:
- Make VF support checks account for the associated PF and validate
that VF and PF Smallest Translation Unit settings agree.
- Platform drivers:
- Fix Qualcomm runtime-PM, probe unwind, fault reporting and page
table initialization races.
- Rework Rockchip state handling and fix clock, probe and stale-fault
handling.
- Fix smaller issues in the MSM and MediaTek drivers.
- Device-tree bindings:
- Add new Qualcomm SMMU compatibles, convert the OMAP IOMMU binding
to YAML, and fix the Tegra264 CMDQV interrupt example.
- Various smaller cleanups, documentation fixes and a Rust IOMMU
safety/readability improvement.
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Merge tag 'iommu-updates-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux
Pull iommu updates from Joerg Roedel:
"ARM SMMUv2:
- Device-tree binding updates for Qualcomm Eliza, Maili, Shikra and
IPQ9650 SoCs
- Add support for Qualcomm SM8450
- Numerous fixes for lifetime and ordering issues found by Sashiko in
the Qualcomm driver
ARM SMMUv3:
- Fix interrupt type in device-tree binding example for NVIDIA CMDQV
- Numerous fixes for issues identified by Sashiko in the NVIDIA CMDQV
driver
- Work around TLB erratum T264-SMMU-3 on Tegra264 by repeating the
invalidation sequence
- Add support for HAFT (hardware access flag in table entries) when
using SVA
- Probe for 52-bit addressing with a page size smaller than 64k
('DS') but don't do anything with it for now
- Minor driver improvements (remove sort_nonatomic(), use
readl_relaxed_poll_timeout_atomic(), fix IOPF teardown ordering)
Intel VT-d:
- Consolidation of complex enablement logic into a clean,
priority-based state machine
- Support for the DMA_REMAP_OPT_OUT flag from the VT-d v5.2
specification
- An update to cache_tag_flush_devtlb_psi() to use full-range
constants instead of modifying shared variables for
CACHE_TAG_NESTING_DEVTLB
- A fix for the UCTP context-table slot when copying root entries
- Fixes for several pre-existing issues reported by Sashiko
- General code cleanup and refinement
AMD IOMMU:
- Add SNP page-mode-0 support, enabling passthrough, v2 DMA page
tables and host SVA on supporting systems
- Fix invalid PPR handling, COMPLETE_PPR responses and guest-mode
reporting
- Improve Southbridge IOAPIC validation and remove the dependency on
hard-coded device IDs
- Fix PCI-device lifetime, debugfs and diagnostic issues
IOMMU core and IOMMUFD:
- Restore serialization of the shared MSI-page list
- Fix SVA-handle publication and several IOMMUFD reference and error
path leaks
- Return the expected zero result for invalid generic page-table
translations
- Allocate per-CPU IOVA magazines lazily to reduce memory use on
large systems
PCI ATS:
- Make VF support checks account for the associated PF and validate
that VF and PF Smallest Translation Unit settings agree
Platform drivers:
- Fix Qualcomm runtime-PM, probe unwind, fault reporting and page
table initialization races
- Rework Rockchip state handling and fix clock, probe and stale-fault
handling
- Fix smaller issues in the MSM and MediaTek drivers
Device-tree bindings:
- Add new Qualcomm SMMU compatibles, convert the OMAP IOMMU binding
to YAML, and fix the Tegra264 CMDQV interrupt example
Various smaller cleanups, documentation fixes and a Rust IOMMU
safety/readability improvement"
* tag 'iommu-updates-v7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/iommu/linux: (93 commits)
iommu/amd: Add SNP page mode 0 support
iommu/amd: Fix GN bit setting in COMPLETE_PPR_REQUEST command
iommu/amd: Rate limit INVALID_PPR_REQUEST error logging
iommu/amd: Fix missing CMD_COMPLETE_PPR response for invalid PPR requests
iommu/amd: Introduce PPR_TAG_LAST_PAGE() macro
iommu/amd: Fix incorrect device ID in invalid PASID error message
iommu/vt-d: Flush context cache with correct SID when tearing down aliases
iommu/vt-d: Tear down scalable-mode context on probe failure
iommu/vt-d: Fix iopf_refcount leak on RID domain replacement
iommu/vt-d: Clear Present bit before tearing down copied context entry
iommu/vt-d: Fix copied_tables bitmap leak on error in copy_translation_tables
iommu/vt-d: Cache max domain ID to avoid redundant calculation
iommu/vt-d: Support the new DMA_REMAP_OPT_OUT flag bit
iommu/vt-d: Remove dmar_disabled
iommu/vt-d: Remove the 'force_on' variable
iommu/vt-d: Call dmar_can_force_on() for tboot opt-in
iommu/vt-d: Use dmar_can_force_on() for platform opt-in
iommu/vt-d: Consolidate dmar policy management and force_on logic
iommu/vt-d: Remove dead code when CONFIG_INTEL_IOMMU is not set
iommu/vt-d: Force requesting ACS when tboot is enabled
...
|
||
|
Linus Torvalds
|
7fa7d4c603 |
- 6 minor cleanups found by Claude Opus 4.6
- small cleanups in dm core, dm-cache, dm-switch, dm-inlinecrypt, dm-vdo - improve validation of metadata in dm-pcache - dm: fix resume-vs-remove ioctl race condition - dm: fix race condition when issuing table load ioctls concurrently - fix dm-raid1 and dm-io, so that they work with unaligned bio vectors - dm-integrity: use keyed markers as discard fillers - improve metadata validation in dm-array - fix dm-stats crash on memory allocation failure - fix dm-dust, so that it works if it is not the first target in a table - dm-era: fix superblock refcount leak on snapshot failure -----BEGIN PGP SIGNATURE----- iIoEABYIADIWIQRnH8MwLyZDhyYfesYTAyx9YGnhbQUCaoNttBQcbXBhdG9ja2FA cmVkaGF0LmNvbQAKCRATAyx9YGnhbThWAQCYDN/SclnydRYV7IKzV/yyd75esUOi lWC3kMbiykSD0AEAmdQeMEqwxpX8i1njnPrcm67i4+LEKMK4X+ApLwV30gQ= =SOAs -----END PGP SIGNATURE----- Merge tag 'for-7.3/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm Pull device mapper updates from Mikulas Patocka: - minor cleanups found by Claude Opus 4.6 - small cleanups in dm core, dm-cache, dm-switch, dm-inlinecrypt, dm-vdo - improve validation of metadata in dm-pcache - fix resume-vs-remove ioctl race condition - fix race condition when issuing table load ioctls concurrently - fix dm-raid1 and dm-io, so that they work with unaligned bio vectors - dm-integrity: use keyed markers as discard fillers - improve metadata validation in dm-array - fix dm-stats crash on memory allocation failure - fix dm-dust, so that it works if it is not the first target in a table - dm-era: fix superblock refcount leak on snapshot failure * tag 'for-7.3/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (46 commits) dm-era: fix shadowed superblock leak on take-snap failure dm dust: make badblock messages target-relative dm-stats: fix a crash if allocation of per-cpu data fails dm array: reject an array block whose value size is not the caller's dm array: validate array block headers on read dm-integrity: replace forgeable discard filler with a keyed sector marker dm vdo indexer: embed geometry in parent structures dm vdo indexer: simplify sub-index parameter calculations dm-pcache: remove unused 'cache' parameter from cache_key_gc() docs: device-mapper: dm-inlinecrypt: fix 'bellow' spelling dm-pcache: remove unused miss_read_end_work_fn declaration dm-io: report non-retryable errors separatedly dm-io: clone the source bio instead of copying its biovec dm: fix race when loading and unloading a table dm: fix resume-vs-remove race dm-pcache: remove unused 'allocated' variable in cache_data_alloc() dm-pcache: replace tabs with spaces in comments to fix ASCII diagram alignment dm-pcache: fix use-after-free and invalid seg operations in kset_replay() dm-pcache: fix implicit u8 truncation of gc_percent in message handler dm raid1: reserve space for NUL-terminator in build_constructor_string() ... |
||
|
Linus Torvalds
|
faabe2db71 |
ata changes for 7.3
- Some code cleanups to rename the function used to identify ZAC
devices and declare some local functions static (me).
- Refactoring and improvement of the translation of the SCSI
REPORT SUPPORTED OPCODES command to allow users access to the entire
list of supported commands (me).
- Fix the translation of the WRITE SAME command with UNMAP bit set (DSM
TRIM) for devices with a sector size larger than 2K and devices that
support multiple TRIM segments (Niklas).
- Add support detecting support for and translating the SCSI commands
related to the storage elements depopulation feature (GET PHYSICAL
ELEMENT STATUS, REMOVE ELEMENT AND TRUCATE, REMOVE ELEMENT AND MODIFY
ZONES and RESTORE ELEMENTS AND REBUILD) (me).
- Improvements to the sata_mv driver probe code (clocks and IRQ
initialization) (Rosen).
- Improve resource initialization in the pata_rb532_cf, pata_pxa,
sata_highbank and ahci_da850 drivers (Rosen).
- Improve PIO data-in command completions to better hndle slow devices,
e.g. CF cards (Richard).
- Improve the DMA channel management using device resources in the
pata_pxa driver (Rosen).
- Fix the pata_ep93xx driver to correctly fallback to PIO mode if DMA
initialization fails (Rosen).
- Use named initializers to define the match tables of the ahci_xgene,
ahci_qoriq and ahci_platform drivers (Pawel).
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Merge tag 'ata-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux
Pull ata updates from Damien Le Moal:
- Some code cleanups to rename the function used to identify ZAC
devices and declare some local functions static (me)
- Refactoring and improvement of the translation of the SCSI REPORT
SUPPORTED OPCODES command to allow users access to the entire list of
supported commands (me)
- Fix the translation of the WRITE SAME command with UNMAP bit set (DSM
TRIM) for devices with a sector size larger than 2K and devices that
support multiple TRIM segments (Niklas)
- Add support detecting support for and translating the SCSI commands
related to the storage elements depopulation feature (GET PHYSICAL
ELEMENT STATUS, REMOVE ELEMENT AND TRUCATE, REMOVE ELEMENT AND MODIFY
ZONES and RESTORE ELEMENTS AND REBUILD) (me)
- Improvements to the sata_mv driver probe code (clocks and IRQ
initialization) (Rosen)
- Improve resource initialization in the pata_rb532_cf, pata_pxa,
sata_highbank and ahci_da850 drivers (Rosen)
- Improve PIO data-in command completions to better hndle slow devices,
e.g. CF cards (Richard)
- Improve the DMA channel management using device resources in the
pata_pxa driver (Rosen)
- Fix the pata_ep93xx driver to correctly fallback to PIO mode if DMA
initialization fails (Rosen)
- Use named initializers to define the match tables of the ahci_xgene,
ahci_qoriq and ahci_platform drivers (Pawel)
* tag 'ata-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/libata/linux: (28 commits)
ata: use named initializers for acpi_device_id
ata: pata_ep93xx: fix PIO fallback when DMA init fails
ata: pata_pxa: use devres for DMA channel management
ata: libata-sff: don't busy-wait for PIO data-in command completion
ata: ahci_da850: use devm_platform_ioremap_resource()
ata: sata_highbank: use devm_platform_ioremap_resource
ata: pata_pxa: use devm_platform_ioremap_resource
ata: pata_rb532_cf: use devm_platform_ioremap_resource()
ata: sata_mv: use devm clock helpers
ata: sata_mv: Use platform_get_irq() to get interrupt
ata: pata_mpc52xx: Remove redundant dev_err()
ata: libata-eh: make ata_eh_qc_complete() and ata_eh_qc_retry() static
ata: libata-scsi: add support for the REMOVE ELEMENT AND MODIFY ZONES command
ata: libata-scsi: add support for the RESTORE ELEMENTS AND REBUILD command
ata: libata-scsi: add support for the REMOVE ELEMENT AND TRUNCATE command
ata: libata-scsi: add support for the GET PHYSICAL ELEMENT STATUS command
ata: libata-core: detect support for depopulation capabilities
ata: libata-scsi: improve ata_get_xlat_func
ata: libata: improve the definition of device flags
scsi: define depopulation capabilities related service actions
...
|
||
|
Oliver Upton
|
c75d616c08 |
Merge branch 'kvm-arm64/vncr-fixes' into next
* kvm-arm64/vncr-fixes: : Fixes for handling L1 VNCR mappings, courtesy of Marc Zyngier : : - Recompute the VNCR software TLB when the MMU is toggled at stage-1 : : - Improve TLB invalidation intersection to handle TLBIs affecting the : end of the VA space : : - Fix race to invalidate the VNCR fixmap between TLBI emulation and : vcpu_put() : : - Add missing sign extension for computing TLBI ranges : : - Make VNCR invalidation participate in the MMU notifier seqcount, : preventing a concurrent VNCR TLB fill from consuming a stale : translation KVM: arm64: Correctly cap TLBI Range to the architural limit KVM: arm64: Add VNCR TLB tracking again KVM: arm64: Make VNCR invalidation participate in MMU invalidation retry KVM: arm64: Sign-extend VA for range-based TLBI invalidation KVM: arm64: Handle VNCR TLB invalidation race with vcpu_put() VNCR unmapping KVM: arm64: Correctly handle end of VA space TLBI invalidation KVM: arm64: Consider SCTLR_EL2.M when mapping the L1 VNCR page KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation KVM: arm64: Remove VM-wide VNCR mapping counter Signed-off-by: Oliver Upton <oupton@kernel.org> |
||
|
Oliver Upton
|
5f44f603b0 |
Merge branch 'kvm-arm64/feat-nv3' into next
* kvm-arm64/feat-nv3: (29 commits)
: Support for FEAT_NV2p1 and FEAT_NV3, courtesy of Marc Zyngier
:
: Couple of accelerations for nested virtualization:
:
: - Elide traps for EL1 alias registers when hardware guarantees that
: EL2-only bits are stateful (NV2p1)
:
: - Use TGE-aware hardware to avoid unnecesary ERET/TLBI traps that
: remain 'in-context' (i.e. L1 kernel/userspace)
arm64: Add override for ID_AA64MMFR4_EL1.NV_frac
KVM: arm64: selftest: Add NVHCR_EL2 to get-reg-list
KVM: arm64: Expose FEAT_NV3 to guests
KVM: arm64: Add FEAT_NV3 detection
KVM: arm64: Engage NV3 TLBI trap elision
KVM: arm64: Engage NV3 ERET trap elision
KVM: arm64: Add NVHCR_EL2 context switching
KVM: arm64: Add routing for NVHCR_EL2 trap
KVM: arm64: Add NVHCR_EL2 handling to the sysreg array
KVM: arm64: Add sanitisation for NVHCR_EL2
KVM: arm64: Make HCR_EL2 a non-VNCR register
KVM: arm64: Add kvm_has_nv{2,3}() predicates
KVM: arm64: Add NV3 control bits to HCRX_EL2 sanitisation
KVM: arm64: Split NV-specific exit fixups from the non-NV handling
arm64: Add ARM64_HAS_NV3 capability
arm64: sysreg: Add HCRX_EL2 bits related to FEAT_NV3
arm64: sysreg: Add NVHCR_EL2 description as a mirror of HCR_EL2
arm64: Add FEAT_NV2p1 detection
KVM: arm64: Expose FEAT_NV2p1 to NV guests
KVM: arm64: Relax CNTHCTL_EL2 handling when FEAT_NV2p1 is present
...
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
||
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Oliver Upton
|
5279b2f422 |
Merge branch 'kvm-arm64/pkvm-7.3' into next
* kvm-arm64/pkvm-7.3: (26 commits)
: pKVM updates for 7.3
:
: - Avoid name collision on trace_clock() when CONFIG_NVHE_EL2_TRACING is
: disabled (Mostafa Saleh)
:
: - Clean up state tracking for whether the EL2 shadow VM has been
: created (Fuad Tabba)
:
: - Synchronize SCTLR_EL1 when injecting an exception to use current
: PAN/SSBS state (Fuad Tabba)
:
: - Avoid unnecessary cache maintenance when I/D-cache are known to be
: coherent in pKVM (Mostafa Saleh)
:
: - Lazy vCPU context save/restore for pKVM (Fuad Tabba)
:
: - Various fixes to the stage-2 MMU for pKVM (Fuad Tabba)
:
: - Allow counter offsetting of non-protected guests in protected mode
: (Mostafa Saleh)
:
: - Condition the 'broken CNTVOFF' mitigation on a VM actually having a
: nonzero offset, fixing boot failures of pVMs on affected hardware
: (Mostafa Saleh)
KVM: arm64: Fix hvhe and broken CNTVOFF_EL2
KVM: arm64: Fix timer offsets for non-protected VMs
KVM: arm64: Make timer_get_offset() work in all contexts
KVM: arm64: selftests: Add stage-2 block transition test
KVM: arm64: Don't advertise eager page splitting under pKVM
KVM: arm64: Don't WARN on pKVM stage-2 map failures
KVM: arm64: Skip pKVM stage-2 flush when FWB is enabled
KVM: arm64: Top up stage-2 memcache for dirty logging faults
KVM: arm64: Top up the memcache for pKVM permission faults
KVM: arm64: Skip cache maintenance for non-cacheable pKVM mappings
KVM: arm64: Implement lazy vCPU state sync for non-protected guests
KVM: arm64: Add primitives to flush/sync the VGIC state at EL2
KVM: arm64: Minimise EL2's exposure of host VGIC state during world switch
KVM: arm64: Add host and hypervisor vCPU lookup primitives
KVM: arm64: Move PSCI helper functions to a shared header
KVM: arm64: Factor out reusable vCPU reset helpers
KVM: arm64: Make vcpu_{read,write}_sys_reg available to HYP code
KVM: arm64: Extract MPIDR computation into a shared header
KVM: arm64: selftests: Add a userspace watchpoint test
KVM: arm64: Flush external_mdscr_el1 to the pKVM hyp vCPU
...
Signed-off-by: Oliver Upton <oupton@kernel.org>
|
||
|
Oliver Upton
|
f181451283 |
Merge branch 'kvm-arm64/pmu-7.3' into next
* kvm-arm64/pmu-7.3: : vPMU updates for 7.3 : : - Support for slot-based PMU events, relying on new UAPI that makes : selection of a vPMU implementation mandatory (Congkai Tan) KVM: arm64: Add KVM_ARM_VCPU_PMU_V3_STRICT vCPU feature KVM: arm64: Ignore writes to PMCR_EL0.N when using strict UAPI KVM: arm64: Advertise STALL_SLOT* in PMCEID1 under strict PMUv3 UAPI KVM: arm64: Expose PMMIR_EL1.SLOTS under strict PMUv3 UAPI Signed-off-by: Oliver Upton <oupton@kernel.org> |
||
Sascha Bischoff
|
302f94dc3f |
KVM: arm64: Validate GICv5 timer PPIs before claiming ownership
With GICv5, timer PPIs use architecturally defined IDs, and therefore
we require userspace to use the architected IDs too. We perform this
validation in timer_irqs_are_valid(), which validates the configured
PPI after claiming it with kvm_vgic_set_owner(). This is obviously the
wrong order, and could both result in a NULL pointer dereference for
an ID >= 64 and in an incorrect ownership claim.
Switch the order to first validate the PPI before setting the
owner. This both prevents an invalid GICv5 timer PPI from reaching the
IRQ lookup, and avoids claiming an IRQ for a timer configuration that
will be rejected.
Fixes:
|
||
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Sascha Bischoff
|
2962174fdf |
KVM: arm64: vgic: Reject out-of-range GICv5 PPI IDs
GICv5 supports up to 128 PPIs, but KVM currently implements only the first 64, which contain the architected PPIs it supports. An encoded PPI with an ID outside that range passes irq_is_ppi(), which only checks the encoded interrupt type. vgic_get_vcpu_irq() therefore looks it up in private_irqs[], where array_index_nospec() clamps the out-of-range index to zero and aliases PPI 0. Include the supported PPI range in irq_is_ppi() so that KVM interfaces reject unsupported PPIs. Also reject an out-of-range PPI in the lookup as a safeguard against callers bypassing the predicate. Fixes: |
||
|
Sascha Bischoff
|
93cfad8da7 |
KVM: arm64: vgic: Prevent speculative SPI array underflow
For a non-GICv5 VM, SPI interrupt IDs include the private-interrupt
offset, while KVM's SPI array is indexed from zero. The lookup applies
array_index_nospec() to the absolute interrupt ID and subtracts the
private-interrupt offset afterwards.
On a speculative bypass of the range check for an interrupt ID below
the private range, the clamp preserves the small absolute value and
the subtraction underflows to an out-of-bounds SPI array index.
Convert the interrupt ID to a zero-based index into the SPI array
before applying array_index_nospec(). This way, we ensure that we
clamp to a reachable SPI ID, rather than an out-of-range SPI index.
Fixes:
|