- fprobe: Add a comment why fprobe will be skipped if another kprobe is
running in fprobe_kprobe_handler().
- probe-events: Fix some issues related to fetch-argument
. Fix double counting of the string length for user-string and symstr.
This will require longer buffer in the array case.
. Fix not to count error code (minus value) for the total used length
in array argument. This makes the total used length shorter.
. Fix to update dynamic used data size counter only if fetcharg uses
the dynamic size data. This may mis-count the used dynamic data
size and corrupt data.
. Revert "tracing: Add "(fault)" name injection to kernel probes"
because that did not work correctly with a bug, and we agreed the
current '(fault)' output (instead of '"(fault)"' like a string)
explains what happened more clearly.
. Fix to record 0-length (means fault access) data_loc data in fetch
function itself, instead of store_trace_args(). If we record an
array of string, this will fix to save fault access data on each
entry of the array correctly.
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Merge tag 'probes-fixes-v6.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull probe fixes from Masami Hiramatsu:
- fprobe: Add a comment why fprobe will be skipped if another kprobe is
running in fprobe_kprobe_handler().
- probe-events: Fix some issues related to fetch-arguments:
- Fix double counting of the string length for user-string and
symstr. This will require longer buffer in the array case.
- Fix not to count error code (minus value) for the total used
length in array argument. This makes the total used length
shorter.
- Fix to update dynamic used data size counter only if fetcharg uses
the dynamic size data. This may mis-count the used dynamic data
size and corrupt data.
- Revert "tracing: Add "(fault)" name injection to kernel probes"
because that did not work correctly with a bug, and we agreed the
current '(fault)' output (instead of '"(fault)"' like a string)
explains what happened more clearly.
- Fix to record 0-length (means fault access) data_loc data in fetch
function itself, instead of store_trace_args(). If we record an
array of string, this will fix to save fault access data on each
entry of the array correctly.
* tag 'probes-fixes-v6.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails
Revert "tracing: Add "(fault)" name injection to kernel probes"
tracing/probes: Fix to update dynamic data counter if fetcharg uses it
tracing/probes: Fix not to count error code to total length
tracing/probes: Fix to avoid double count of the string length on the array
fprobes: Add a comment why fprobe_kprobe_handler exits if kprobe is running
A couple of fairly minor driver specific fixes here, plus a bunch of
maintainership and admin updates. Nothing too remarkable.
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Merge tag 'spi-fix-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A couple of fairly minor driver specific fixes here, plus a bunch of
maintainership and admin updates. Nothing too remarkable"
* tag 'spi-fix-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
mailmap: add entry for Jonas Gorski
MAINTAINERS: add myself for spi-bcm63xx
spi: s3c64xx: clear loopback bit after loopback test
spi: bcm63xx: fix max prepend length
MAINTAINERS: Add myself as a maintainer for Microchip SPI
One fix for an out of bounds access in the interupt code here.
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Merge tag 'regmap-fix-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fix from Mark Brown:
"One fix for an out of bounds access in the interupt code here"
* tag 'regmap-fix-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap-irq: Fix out-of-bounds access when allocating config buffers
Including:
- Fix a regression causing a crash on sysfs access of iommu-group
specific files
- Fix signedness bug in SVA code
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Merge tag 'iommu-fixes-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Fix a regression causing a crash on sysfs access of iommu-group
specific files
- Fix signedness bug in SVA code
* tag 'iommu-fixes-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/sva: Fix signedness bug in iommu_sva_alloc_pasid()
iommu: Fix crash during syfs iommu_groups/N/type
The primary bug Alyssa noticed was that with FineIBT enabled function
prologues have a spurious ENDBR instruction:
__cfi_foo:
endbr64
subl $hash, %r10d
jz 1f
ud2
nop
1:
foo:
endbr64 <--- *sadface*
This means that any indirect call that fails to target the __cfi symbol
and instead targets (the regular old) foo+0, will succeed due to that
second ENDBR.
Fixing this lead to the discovery of a single indirect call that was
still doing this: ret_from_fork(), since that's an assembly stub the
compmiler would not generate the proper kCFI indirect call magic and it
would not get patched.
Brian came up with the most comprehensive fix -- convert the thing to C
with only a very thin asm wrapper. This ensures the kernel thread
boostrap is a proper kCFI call.
While discussing all this, Kees noted that kCFI hashes could/should be
poisoned to seal all functions whose address is never taken, further
limiting the valid kCFI targets -- much like we already do for IBT.
So what was a 'simple' observation and fix cascaded into a bunch of
inter-related CFI infrastructure fixes.
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Merge tag 'x86_urgent_for_6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 CFI fixes from Peter Zijlstra:
"Fix kCFI/FineIBT weaknesses
The primary bug Alyssa noticed was that with FineIBT enabled function
prologues have a spurious ENDBR instruction:
__cfi_foo:
endbr64
subl $hash, %r10d
jz 1f
ud2
nop
1:
foo:
endbr64 <--- *sadface*
This means that any indirect call that fails to target the __cfi
symbol and instead targets (the regular old) foo+0, will succeed due
to that second ENDBR.
Fixing this led to the discovery of a single indirect call that was
still doing this: ret_from_fork(). Since that's an assembly stub the
compiler would not generate the proper kCFI indirect call magic and it
would not get patched.
Brian came up with the most comprehensive fix -- convert the thing to
C with only a very thin asm wrapper. This ensures the kernel thread
boostrap is a proper kCFI call.
While discussing all this, Kees noted that kCFI hashes could/should be
poisoned to seal all functions whose address is never taken, further
limiting the valid kCFI targets -- much like we already do for IBT.
So what was a 'simple' observation and fix cascaded into a bunch of
inter-related CFI infrastructure fixes"
* tag 'x86_urgent_for_6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cfi: Only define poison_cfi() if CONFIG_X86_KERNEL_IBT=y
x86/fineibt: Poison ENDBR at +0
x86: Rewrite ret_from_fork() in C
x86/32: Remove schedule_tail_wrapper()
x86/cfi: Extend ENDBR sealing to kCFI
x86/alternative: Rename apply_ibt_endbr()
x86/cfi: Extend {JMP,CAKK}_NOSPEC comment
This is a bunch of small driver fixes and a larger rework of zone disk
handling (which reaches into blk and nvme). The aacraid array-bounds
fix is now critical since the security people turned on -Werror for
some build tests, which now fail without it.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a bunch of small driver fixes and a larger rework of zone disk
handling (which reaches into blk and nvme).
The aacraid array-bounds fix is now critical since the security people
turned on -Werror for some build tests, which now fail without it"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: storvsc: Handle SRB status value 0x30
scsi: block: Improve checks in blk_revalidate_disk_zones()
scsi: block: virtio_blk: Set zone limits before revalidating zones
scsi: block: nullblk: Set zone limits before revalidating zones
scsi: nvme: zns: Set zone limits before revalidating zones
scsi: sd_zbc: Set zone limits before revalidating zones
scsi: ufs: core: Add support for qTimestamp attribute
scsi: aacraid: Avoid -Warray-bounds warning
scsi: ufs: ufs-mediatek: Add dependency for RESET_CONTROLLER
scsi: ufs: core: Update contact email for monitor sysfs nodes
scsi: scsi_debug: Remove dead code
scsi: qla2xxx: Use vmalloc_array() and vcalloc()
scsi: fnic: Use vmalloc_array() and vcalloc()
scsi: qla2xxx: Fix error code in qla2x00_start_sp()
scsi: qla2xxx: Silence a static checker warning
scsi: lpfc: Fix a possible data race in lpfc_unregister_fcf_rescan()
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Merge tag 'block-6.5-2023-07-14' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- NVMe pull request via Keith:
- Don't require quirk to use duplicate namespace identifiers
(Christoph, Sagi)
- One more BOGUS_NID quirk (Pankaj)
- IO timeout and error hanlding fixes for PCI (Keith)
- Enhanced metadata format mask fix (Ankit)
- Association race condition fix for fibre channel (Michael)
- Correct debugfs error checks (Minjie)
- Use PAGE_SECTORS_SHIFT where needed (Damien)
- Reduce kernel logs for legacy nguid attribute (Keith)
- Use correct dma direction when unmapping metadata (Ming)
- Fix for a flush handling regression in this release (Christoph)
- Fix for batched request time stamping (Chengming)
- Fix for a regression in the mq-deadline position calculation (Bart)
- Lockdep fix for blk-crypto (Eric)
- Fix for a regression in the Amiga partition handling changes
(Michael)
* tag 'block-6.5-2023-07-14' of git://git.kernel.dk/linux:
block: queue data commands from the flush state machine at the head
blk-mq: fix start_time_ns and alloc_time_ns for pre-allocated rq
nvme-pci: fix DMA direction of unmapping integrity data
nvme: don't reject probe due to duplicate IDs for single-ported PCIe devices
block/mq-deadline: Fix a bug in deadline_from_pos()
nvme: ensure disabling pairs with unquiesce
nvme-fc: fix race between error recovery and creating association
nvme-fc: return non-zero status code when fails to create association
nvme: fix parameter check in nvme_fault_inject_init()
nvme: warn only once for legacy uuid attribute
block: remove dead struc request->completion_data field
nvme: fix the NVME_ID_NS_NVM_STS_MASK definition
nvmet: use PAGE_SECTORS_SHIFT
nvme: add BOGUS_NID quirk for Samsung SM953
blk-crypto: use dynamic lock class for blk_crypto_profile::lock
block/partition: fix signedness issue for Amiga partitions
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Merge tag 'io_uring-6.5-2023-07-14' of git://git.kernel.dk/linux
Pull io_uring fix from Jens Axboe:
"Just a single tweak for the wait logic in io_uring"
* tag 'io_uring-6.5-2023-07-14' of git://git.kernel.dk/linux:
io_uring: Use io_schedule* in cqring wait
* A fix for a formatting error in the hwprobe documentation.
* A fix for a spurious warning in the RISC-V PMU driver.
* A fix for memory detection on rv32, which does not manifest on any
known system.
* A fix to avoid parsing legacy parsing of I in ACPI ISA strings.
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Merge tag 'riscv-for-linus-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- fix a formatting error in the hwprobe documentation
- fix a spurious warning in the RISC-V PMU driver
- fix memory detection on rv32 (problem does not manifest on any known
system)
- avoid parsing legacy parsing of I in ACPI ISA strings
* tag 'riscv-for-linus-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: Don't include Zicsr or Zifencei in I from ACPI
riscv: mm: fix truncation warning on RV32
perf: RISC-V: Remove PERF_HES_STOPPED flag checking in riscv_pmu_start()
Documentation: RISC-V: hwprobe: Fix a formatting error
- Unbreak the /sys/power/resume interface after recent changes (Azat
Khuzhin).
- Allow PM_QOS_DEFAULT_VALUE to be used with frequency QoS (Chungkai
Yang).
- Remove __init from cpufreq callbacks in the sparc driver, because
they may be called after initialization too (Viresh Kumar).
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Merge tag 'pm-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix hibernation (after recent changes), frequency QoS and the
sparc cpufreq driver.
Specifics:
- Unbreak the /sys/power/resume interface after recent changes (Azat
Khuzhin).
- Allow PM_QOS_DEFAULT_VALUE to be used with frequency QoS (Chungkai
Yang).
- Remove __init from cpufreq callbacks in the sparc driver, because
they may be called after initialization too (Viresh Kumar)"
* tag 'pm-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: sparc: Don't mark cpufreq callbacks with __init
PM: QoS: Restore support for default value on frequency QoS
PM: hibernate: Fix writing maj:min to /sys/power/resume
Merge a PM QoS fix and a hibernation fix for 6.5-rc2.
- Unbreak the /sys/power/resume interface after recent changes (Azat
Khuzhin).
- Allow PM_QOS_DEFAULT_VALUE to be used with frequency QoS (Chungkai
Yang).
* pm-sleep:
PM: hibernate: Fix writing maj:min to /sys/power/resume
* pm-qos:
PM: QoS: Restore support for default value on frequency QoS
fbdev:
- dma: Fix documented default preferred_bpp value
ttm:
- fix warning that we shouldn't mix && and ||
- never consider pinned BOs for eviction&swap
- Don't leak a resource on eviction error
- Don't leak a resource on swapout move error
- fix bulk_move corruption when adding a entry
client:
- Send hotplug event after registering a client
dma-buf:
- keep the signaling time of merged fences v3
- fix an error pointer vs NULL bug
sched:
- wait for all deps in kill jobs
- call set fence parent from scheduled
i915:
- Don't preserve dpll_hw_state for slave crtc in Bigjoiner
- Consider OA buffer boundary when zeroing out reports
- Remove dead code from gen8_pte_encode
- Fix one wrong caching mode enum usage
amdgpu:
- SMU i2c locking fix
- Fix a possible deadlock in process restoration for ROCm apps
- Disable PCIe lane/speed switching on Intel platforms (the platforms don't support it)
nouveau:
- disp: fix HDMI on gt215+
- disp/g94: enable HDMI
- acr: Abort loading ACR if no firmware was found
- bring back blit subchannel for pre nv50 GPUs
- Fix drm_dp_remove_payload() invocation
ivpu:
- Fix VPU register access in irq disable
- Clear specific interrupt status bits on C0
bridge:
- dw_hdmi: fix connector access for scdc
- ti-sn65dsi86: Fix auxiliary bus lifetime
panel:
- simple: Add connector_type for innolux_at043tn24
- simple: Add Powertip PH800480T013 drm_display_mode flags
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Merge tag 'drm-fixes-2023-07-14-1' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"There were a bunch of fixes lined up for 2 weeks, so we have quite a
few scattered fixes, mostly amdgpu and i915, but ttm has a bunch and
nouveau makes an appearance.
So a bit busier than usual for rc2, but nothing seems out of the
ordinary.
fbdev:
- dma: Fix documented default preferred_bpp value
ttm:
- fix warning that we shouldn't mix && and ||
- never consider pinned BOs for eviction&swap
- Don't leak a resource on eviction error
- Don't leak a resource on swapout move error
- fix bulk_move corruption when adding a entry
client:
- Send hotplug event after registering a client
dma-buf:
- keep the signaling time of merged fences v3
- fix an error pointer vs NULL bug
sched:
- wait for all deps in kill jobs
- call set fence parent from scheduled
i915:
- Don't preserve dpll_hw_state for slave crtc in Bigjoiner
- Consider OA buffer boundary when zeroing out reports
- Remove dead code from gen8_pte_encode
- Fix one wrong caching mode enum usage
amdgpu:
- SMU i2c locking fix
- Fix a possible deadlock in process restoration for ROCm apps
- Disable PCIe lane/speed switching on Intel platforms (the platforms
don't support it)
nouveau:
- disp: fix HDMI on gt215+
- disp/g94: enable HDMI
- acr: Abort loading ACR if no firmware was found
- bring back blit subchannel for pre nv50 GPUs
- Fix drm_dp_remove_payload() invocation
ivpu:
- Fix VPU register access in irq disable
- Clear specific interrupt status bits on C0
bridge:
- dw_hdmi: fix connector access for scdc
- ti-sn65dsi86: Fix auxiliary bus lifetime
panel:
- simple: Add connector_type for innolux_at043tn24
- simple: Add Powertip PH800480T013 drm_display_mode flags"
* tag 'drm-fixes-2023-07-14-1' of git://anongit.freedesktop.org/drm/drm: (32 commits)
drm/nouveau: bring back blit subchannel for pre nv50 GPUs
drm/nouveau/acr: Abort loading ACR if no firmware was found
drm/amd: Align SMU11 SMU_MSG_OverridePcieParameters implementation with SMU13
drm/amd: Move helper for dynamic speed switch check out of smu13
drm/amd/pm: conditionally disable pcie lane/speed switching for SMU13
drm/amd/pm: share the code around SMU13 pcie parameters update
drm/amdgpu: avoid restore process run into dead loop.
drm/amd/pm: fix smu i2c data read risk
drm/nouveau/disp/g94: enable HDMI
drm/nouveau/disp: fix HDMI on gt215+
drm/client: Send hotplug event after registering a client
drm/i915: Fix one wrong caching mode enum usage
drm/i915: Remove dead code from gen8_pte_encode
drm/i915/perf: Consider OA buffer boundary when zeroing out reports
drm/i915: Don't preserve dpll_hw_state for slave crtc in Bigjoiner
drm/ttm: never consider pinned BOs for eviction&swap
drm/fbdev-dma: Fix documented default preferred_bpp value
dma-buf: fix an error pointer vs NULL bug
accel/ivpu: Clear specific interrupt status bits on C0
accel/ivpu: Fix VPU register access in irq disable
...
for stable.
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Merge tag 'ceph-for-6.5-rc2' of https://github.com/ceph/ceph-client
Pull ceph fix from Ilya Dryomov:
"A fix to prevent a potential buffer overrun in the messenger, marked
for stable"
* tag 'ceph-for-6.5-rc2' of https://github.com/ceph/ceph-client:
libceph: harden msgr2.1 frame segment length checks
We used to insert the data commands following a pre-flush to the head
of the queue until commit 1e82fadfc6 ("blk-mq: do not do head insertions
post-pre-flush commands"). Not doing this seems to cause hangs of
such commands on NFS workloads when exported from file systems with
SATA SSDs. I have no idea why this would starve these workloads,
but doing a semantic revert of this patch (which looks quite different
due to various other changes) fixes the hangs.
Fixes: 1e82fadfc6 ("blk-mq: do not do head insertions post-pre-flush commands")
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://lore.kernel.org/r/20230714143014.11879-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The ida_alloc_range() function returns negative error codes on error.
On success it returns values in the min to max range (inclusive). It
never returns more then INT_MAX even if "max" is higher. It never
returns values in the 0 to (min - 1) range.
The bug is that "min" is an unsigned int so negative error codes will
be promoted to high positive values errors treated as success.
Fixes: 1a14bf0fc7 ("iommu/sva: Use GFP_KERNEL for pasid allocation")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/6b32095d-7491-4ebb-a850-12e96209eaaf@kili.mountain
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Fix to record 0-length data to data_loc in fetch_store_string*() if it fails
to get the string data.
Currently those expect that the data_loc is updated by store_trace_args() if
it returns the error code. However, that does not work correctly if the
argument is an array of strings. In that case, store_trace_args() only clears
the first entry of the array (which may have no error) and leaves other
entries. So it should be cleared by fetch_store_string*() itself.
Also, 'dyndata' and 'maxlen' in store_trace_args() should be updated
only if it is used (ret > 0 and argument is a dynamic data.)
Link: https://lore.kernel.org/all/168908496683.123124.4761206188794205601.stgit@devnote2/
Fixes: 40b53b7718 ("tracing: probeevent: Add array type support")
Cc: stable@vger.kernel.org
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
amdgpu:
- SMU i2c locking fix
- Fix a possible deadlock in process restoration for ROCm apps
- Disable PCIe lane/speed switching on Intel platforms (the platforms don't support it)
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Merge tag 'amd-drm-fixes-6.5-2023-07-12' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.5-2023-07-12:
amdgpu:
- SMU i2c locking fix
- Fix a possible deadlock in process restoration for ROCm apps
- Disable PCIe lane/speed switching on Intel platforms (the platforms don't support it)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230712184009.7740-1-alexander.deucher@amd.com
firmware handling, a fix for TTM to skip pinned BO when evicting, and a
fix for the fbdev documentation.
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Merge tag 'drm-misc-fixes-2023-07-13' of ssh://git.freedesktop.org/git/drm/drm-misc into drm-fixes
A couple of nouveau patches addressing improving HDMI support and
firmware handling, a fix for TTM to skip pinned BO when evicting, and a
fix for the fbdev documentation.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/nq3ke75juephbex5acfyi5t6bxv22nhmfcpfhru55haj2nv3us@gehrlmjbqgjk
- Fix two unexpected loop cases when reading beyond EOF;
- Fix fsdax unavailability for chunk-based regular files;
- Get rid of the remaining kmap_atomic();
- Minor cleanups.
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Merge tag 'erofs-for-6.5-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fixes from Gao Xiang:
"Three patches address regressions related to post-EOF unexpected
behaviors and fsdax unavailability of chunk-based regular files.
The other two patches mainly get rid of kmap_atomic() and simplify
z_erofs_transform_plain().
- Fix two unexpected loop cases when reading beyond EOF
- Fix fsdax unavailability for chunk-based regular files
- Get rid of the remaining kmap_atomic()
- Minor cleanups"
* tag 'erofs-for-6.5-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: fix fsdax unavailability for chunk-based regular files
erofs: avoid infinite loop in z_erofs_do_read_page() when reading beyond EOF
erofs: avoid useless loops in z_erofs_pcluster_readmore() when reading beyond EOF
erofs: simplify z_erofs_transform_plain()
erofs: get rid of the remaining kmap_atomic()
- Fix some missing-prototype warnings
- Fix user events struct args (did not include size of struct)
When creating a user event, the "struct" keyword is to denote
that the size of the field will be passed in. But the parsing
failed to handle this case.
- Add selftest to struct sizes for user events
- Fix sample code for direct trampolines.
The sample code for direct trampolines attached to handle_mm_fault().
But the prototype changed and the direct trampoline sample code
was not updated. Direct trampolines needs to have the arguments correct
otherwise it can fail or crash the system.
- Remove unused ftrace_regs_caller_ret() prototype.
- Quiet false positive of FORTIFY_SOURCE
Due to backward compatibility, the structure used to save stack traces
in the kernel had a fixed size of 8. This structure is exported to
user space via the tracing format file. A change was made to allow
more than 8 functions to be recorded, and user space now uses the
size field to know how many functions are actually in the stack.
But the structure still has size of 8 (even though it points into
the ring buffer that has the required amount allocated to hold a
full stack. This was fine until the fortifier noticed that the
memcpy(&entry->caller, stack, size) was greater than the 8 functions
and would complain at runtime about it. Hide this by using a pointer
to the stack location on the ring buffer instead of using the address
of the entry structure caller field.
- Fix a deadloop in reading trace_pipe that was caused by a mismatch
between ring_buffer_empty() returning false which then asked to
read the data, but the read code uses rb_num_of_entries() that
returned zero, and causing a infinite "retry".
- Fix a warning caused by not using all pages allocated to store
ftrace functions, where this can happen if the linker inserts a bunch of
"NULL" entries, causing the accounting of how many pages needed
to be off.
- Fix histogram synthetic event crashing when the start event is
removed and the end event is still using a variable from it.
- Fix memory leak in freeing iter->temp in tracing_release_pipe()
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Merge tag 'trace-v6.5-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Fix some missing-prototype warnings
- Fix user events struct args (did not include size of struct)
When creating a user event, the "struct" keyword is to denote that
the size of the field will be passed in. But the parsing failed to
handle this case.
- Add selftest to struct sizes for user events
- Fix sample code for direct trampolines.
The sample code for direct trampolines attached to handle_mm_fault().
But the prototype changed and the direct trampoline sample code was
not updated. Direct trampolines needs to have the arguments correct
otherwise it can fail or crash the system.
- Remove unused ftrace_regs_caller_ret() prototype.
- Quiet false positive of FORTIFY_SOURCE
Due to backward compatibility, the structure used to save stack
traces in the kernel had a fixed size of 8. This structure is
exported to user space via the tracing format file. A change was made
to allow more than 8 functions to be recorded, and user space now
uses the size field to know how many functions are actually in the
stack.
But the structure still has size of 8 (even though it points into the
ring buffer that has the required amount allocated to hold a full
stack.
This was fine until the fortifier noticed that the
memcpy(&entry->caller, stack, size) was greater than the 8 functions
and would complain at runtime about it.
Hide this by using a pointer to the stack location on the ring buffer
instead of using the address of the entry structure caller field.
- Fix a deadloop in reading trace_pipe that was caused by a mismatch
between ring_buffer_empty() returning false which then asked to read
the data, but the read code uses rb_num_of_entries() that returned
zero, and causing a infinite "retry".
- Fix a warning caused by not using all pages allocated to store ftrace
functions, where this can happen if the linker inserts a bunch of
"NULL" entries, causing the accounting of how many pages needed to be
off.
- Fix histogram synthetic event crashing when the start event is
removed and the end event is still using a variable from it
- Fix memory leak in freeing iter->temp in tracing_release_pipe()
* tag 'trace-v6.5-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Fix memory leak of iter->temp when reading trace_pipe
tracing/histograms: Add histograms to hist_vars if they have referenced variables
tracing: Stop FORTIFY_SOURCE complaining about stack trace caller
ftrace: Fix possible warning on checking all pages used in ftrace_process_locs()
ring-buffer: Fix deadloop issue on reading trace_pipe
tracing: arm64: Avoid missing-prototype warnings
selftests/user_events: Test struct size match cases
tracing/user_events: Fix struct arg size match check
x86/ftrace: Remove unsued extern declaration ftrace_regs_caller_ret()
arm64: ftrace: Add direct call trampoline samples support
samples: ftrace: Save required argument registers in sample trampolines
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Merge tag 'for-linus-6.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- a cleanup of the Xen related ELF-notes
- a fix for virtio handling in Xen dom0 when running Xen in a VM
* tag 'for-linus-6.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/virtio: Fix NULL deref when a bridge of PCI root bus has no parent
x86/Xen: tidy xen-head.S
- sh: hd64461: Handle virq offset for offchip IRQ base and HD64461 IRQ
- sh: mach-dreamcast: Handle virq offset in cascaded IRQ demux
- sh: mach-highlander: Handle virq offset in cascaded IRL demux
- sh: mach-r2d: Handle virq offset in cascaded IRL demux
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Merge tag 'sh-for-v6.5-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux
Pull sh fixes from John Paul Adrian Glaubitz:
"The sh updates introduced multiple regressions.
In particular, the change a8ac296114 ("sh: Avoid using IRQ0 on SH3
and SH4") causes several boards to hang during boot due to incorrect
IRQ numbers.
Geert Uytterhoeven has contributed patches that handle the virq offset
in the IRQ code for the dreamcast, highlander and r2d boards while
Artur Rojek has contributed a patch which handles the virq offset for
the hd64461 companion chip"
* tag 'sh-for-v6.5-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
sh: hd64461: Handle virq offset for offchip IRQ base and HD64461 IRQ
sh: mach-dreamcast: Handle virq offset in cascaded IRQ demux
sh: mach-highlander: Handle virq offset in cascaded IRL demux
sh: mach-r2d: Handle virq offset in cascaded IRL demux
- Don't require quirk to use duplicate namespace identifiers
(Christoph, Sagi)
- One more BOGUS_NID quirk (Pankaj)
- IO timeout and error hanlding fixes for PCI (Keith)
- Enhanced metadata format mask fix (Ankit)
- Association race condition fix for fibre channel (Michael)
- Correct debugfs error checks (Minjie)
- Use PAGE_SECTORS_SHIFT where needed (Damien)
- Reduce kernel logs for legacy nguid attribute (Keith)
- Use correct dma direction when unmapping metadata (Ming)
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Merge tag 'nvme-6.5-2023-07-13' of git://git.infradead.org/nvme into block-6.5
Pull NVMe fixes from Keith:
"nvme fixes for Linux 6.5
- Don't require quirk to use duplicate namespace identifiers
(Christoph, Sagi)
- One more BOGUS_NID quirk (Pankaj)
- IO timeout and error hanlding fixes for PCI (Keith)
- Enhanced metadata format mask fix (Ankit)
- Association race condition fix for fibre channel (Michael)
- Correct debugfs error checks (Minjie)
- Use PAGE_SECTORS_SHIFT where needed (Damien)
- Reduce kernel logs for legacy nguid attribute (Keith)
- Use correct dma direction when unmapping metadata (Ming)"
* tag 'nvme-6.5-2023-07-13' of git://git.infradead.org/nvme:
nvme-pci: fix DMA direction of unmapping integrity data
nvme: don't reject probe due to duplicate IDs for single-ported PCIe devices
nvme: ensure disabling pairs with unquiesce
nvme-fc: fix race between error recovery and creating association
nvme-fc: return non-zero status code when fails to create association
nvme: fix parameter check in nvme_fault_inject_init()
nvme: warn only once for legacy uuid attribute
nvme: fix the NVME_ID_NS_NVM_STS_MASK definition
nvmet: use PAGE_SECTORS_SHIFT
nvme: add BOGUS_NID quirk for Samsung SM953
The iocost rely on rq start_time_ns and alloc_time_ns to tell saturation
state of the block device. Most of the time request is allocated after
rq_qos_throttle() and its alloc_time_ns or start_time_ns won't be affected.
But for plug batched allocation introduced by the commit 47c122e35d
("block: pre-allocate requests if plug is started and is a batch"), we can
rq_qos_throttle() after the allocation of the request. This is what the
blk_mq_get_cached_request() does.
In this case, the cached request alloc_time_ns or start_time_ns is much
ahead if blocked in any qos ->throttle().
Fix it by setting alloc_time_ns and start_time_ns to now when the allocated
request is actually used.
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230710105516.2053478-1-chengming.zhou@linux.dev
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This reverts commit 2e9906f84f.
It was turned out that commit 2e9906f84f ("tracing: Add "(fault)"
name injection to kernel probes") did not work correctly and probe
events still show just '(fault)' (instead of '"(fault)"'). Also,
current '(fault)' is more explicit that it faulted.
This also moves FAULT_STRING macro to trace.h so that synthetic
event can keep using it, and uses it in trace_probe.c too.
Link: https://lore.kernel.org/all/168908495772.123124.1250788051922100079.stgit@devnote2/
Link: https://lore.kernel.org/all/20230706230642.3793a593@rorschach.local.home/
Cc: stable@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
DMA direction should be taken in dma_unmap_page() for unmapping integrity
data.
Fix this DMA direction, and reported in Guangwu's test.
Reported-by: Guangwu Zhang <guazhang@redhat.com>
Fixes: 4aedb70543 ("nvme-pci: split metadata handling from nvme_map_data / nvme_unmap_data")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
While duplicate IDs are still very harmful, including the potential to easily
see changing devices in /dev/disk/by-id, it turn out they are extremely
common for cheap end user NVMe devices.
Relax our check for them for so that it doesn't reject the probe on
single-ported PCIe devices, but prints a big warning instead. In doubt
we'd still like to see quirk entries to disable the potential for
changing supposed stable device identifier links, but this will at least
allow users how have two (or more) of these devices to use them without
having to manually add a new PCI ID entry with the quirk through sysfs or
by patching the kernel.
Fixes: 2079f41ec6 ("nvme: check that EUI/GUID/UUID are globally unique")
Cc: stable@vger.kernel.org # 6.0+
Co-developed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
ceph_frame_desc::fd_lens is an int array. decode_preamble() thus
effectively casts u32 -> int but the checks for segment lengths are
written as if on unsigned values. While reading in HELLO or one of the
AUTH frames (before authentication is completed), arithmetic in
head_onwire_len() can get duped by negative ctrl_len and produce
head_len which is less than CEPH_PREAMBLE_LEN but still positive.
This would lead to a buffer overrun in prepare_read_control() as the
preamble gets copied to the newly allocated buffer of size head_len.
Cc: stable@vger.kernel.org
Fixes: cd1a677cad ("libceph, ceph: implement msgr2.1 protocol (crc and secure modes)")
Reported-by: Thelford Williams <thelford@google.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
Pedro Tammela says:
====================
net/sched: fixes for sch_qfq
Patch 1 fixes a regression introduced in 6.4 where the MTU size could be
bigger than 'lmax'.
Patch 3 fixes an issue where the code doesn't account for qdisc_pkt_len()
returning a size bigger then 'lmax'.
Patches 2 and 4 are selftests for the issues above.
====================
Link: https://lore.kernel.org/r/20230711210103.597831-1-pctammela@mojatatu.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
A packet with stab overhead greater than QFQ_MAX_LMAX should be dropped
by the QFQ qdisc as it can't handle such lengths.
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Tested-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Lion says:
-------
In the QFQ scheduler a similar issue to CVE-2023-31436
persists.
Consider the following code in net/sched/sch_qfq.c:
static int qfq_enqueue(struct sk_buff *skb, struct Qdisc *sch,
struct sk_buff **to_free)
{
unsigned int len = qdisc_pkt_len(skb), gso_segs;
// ...
if (unlikely(cl->agg->lmax < len)) {
pr_debug("qfq: increasing maxpkt from %u to %u for class %u",
cl->agg->lmax, len, cl->common.classid);
err = qfq_change_agg(sch, cl, cl->agg->class_weight, len);
if (err) {
cl->qstats.drops++;
return qdisc_drop(skb, sch, to_free);
}
// ...
}
Similarly to CVE-2023-31436, "lmax" is increased without any bounds
checks according to the packet length "len". Usually this would not
impose a problem because packet sizes are naturally limited.
This is however not the actual packet length, rather the
"qdisc_pkt_len(skb)" which might apply size transformations according to
"struct qdisc_size_table" as created by "qdisc_get_stab()" in
net/sched/sch_api.c if the TCA_STAB option was set when modifying the qdisc.
A user may choose virtually any size using such a table.
As a result the same issue as in CVE-2023-31436 can occur, allowing heap
out-of-bounds read / writes in the kmalloc-8192 cache.
-------
We can create the issue with the following commands:
tc qdisc add dev $DEV root handle 1: stab mtu 2048 tsize 512 mpu 0 \
overhead 999999999 linklayer ethernet qfq
tc class add dev $DEV parent 1: classid 1:1 htb rate 6mbit burst 15k
tc filter add dev $DEV parent 1: matchall classid 1:1
ping -I $DEV 1.1.1.2
This is caused by incorrectly assuming that qdisc_pkt_len() returns a
length within the QFQ_MIN_LMAX < len < QFQ_MAX_LMAX.
Fixes: 462dbc9101 ("pkt_sched: QFQ Plus: fair-queueing service at DRR cost")
Reported-by: Lion <nnamrec@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
QFQ only supports a certain bound of MTU size so make sure
we check for this requirement in the tests.
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Tested-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
25369891fc deletes a check for the case where no 'lmax' is
specified which 3037933448 previously fixed as 'lmax'
could be set to the device's MTU without any bound checking
for QFQ_LMAX_MIN and QFQ_LMAX_MAX. Therefore, reintroduce the check.
Fixes: 25369891fc ("net/sched: sch_qfq: refactor parsing of netlink parameters")
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
A recent change to start counting SuperH IRQ #s from 16 breaks support
for the Hitachi HD64461 companion chip.
Move the offchip IRQ base and HD64461 IRQ # by 16 in order to
accommodate for the new virq numbering rules.
Fixes: a8ac296114 ("sh: Avoid using IRQ0 on SH3 and SH4")
Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230710233132.69734-1-contact@artur-rojek.eu
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
When booting rts7751r2dplus_defconfig on QEMU, the system hangs due to
an interrupt storm on IRQ 20. IRQ 20 aka event 0x280 is a cascaded IRL
interrupt, which maps to IRQ_VOYAGER, the interrupt used by the Silicon
Motion SM501 multimedia companion chip. As rts7751r2d_irq_demux() does
not take into account the new virq offset, the interrupt is no longer
translated, leading to an unhandled interrupt.
Fix this by taking into account the virq offset when translating
cascaded IRL interrupts.
Fixes: a8ac296114 ("sh: Avoid using IRQ0 on SH3 and SH4")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Closes: https://lore.kernel.org/r/fbfea3ad-d327-4ad5-ac9c-648c7ca3fe1f@roeck-us.net
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/2c99d5df41c40691f6c407b7b6a040d406bc81ac.1688901306.git.geert+renesas@glider.be
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
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Merge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:
====================
pull-request: bpf 2023-07-12
We've added 5 non-merge commits during the last 7 day(s) which contain
a total of 7 files changed, 93 insertions(+), 28 deletions(-).
The main changes are:
1) Fix max stack depth check for async callbacks, from Kumar.
2) Fix inconsistent JIT image generation, from Björn.
3) Use trusted arguments in XDP hints kfuncs, from Larysa.
4) Fix memory leak in cpu_map_update_elem, from Pu.
* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
xdp: use trusted arguments in XDP hints kfuncs
bpf: cpumap: Fix memory leak in cpu_map_update_elem
riscv, bpf: Fix inconsistent JIT image generation
selftests/bpf: Add selftest for check_stack_max_depth bug
bpf: Fix max stack depth check for async callbacks
====================
Link: https://lore.kernel.org/r/20230712223045.40182-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
If there is a failure during rtw89_fw_h2c_raw() rtw89_debug_priv_send_h2c
should return negative error code instead of a positive value count.
Fix this bug by returning correct error code.
Fixes: e3ec7017f6 ("rtw89: add Realtek 802.11ax driver")
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/tencent_AD09A61BC4DA92AD1EB0790F5C850E544D07@qq.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
For some device types like TXGBE_ID_XAUI, *checksum computed in
txgbe_calc_eeprom_checksum() is larger than TXGBE_EEPROM_SUM. Remove the
limit on the size of *checksum.
Fixes: 049fe53653 ("net: txgbe: Add operations to interact with firmware")
Fixes: 5e2ea7801f ("net: txgbe: Fix unsigned comparison to zero in txgbe_calc_eeprom_checksum()")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://lore.kernel.org/r/20230711063414.3311-1-jiawenwu@trustnetic.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
One fix:
- During the 6.4 cycle my fpu support work broke ABI compatibility in
the sigcontext struct. This was noticed by musl libc developers after
the release. This fix restores the ABI.
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Merge tag 'for-linus' of https://github.com/openrisc/linux
Pull OpenRISC fix from Stafford Horne:
- During the 6.4 cycle my fpu support work broke ABI compatibility in
the sigcontext struct. This was noticed by musl libc developers after
the release. This fix restores the ABI.
* tag 'for-linus' of https://github.com/openrisc/linux:
openrisc: Union fpcsr and oldmask in sigcontext to unbreak userspace ABI
