Driver fixes for:
- dw-edma fixes to improve driver and remote HDMA setup
- fsl-edma fixes for SoC hange, irq init and byte calculations
and sparse fixes
- idxd: safe user copy of completion record fix
- ptdma: consistent DMA mask fix
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Merge tag 'dmaengine-fix2-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine fixes from Vinod Koul:
- dw-edma fixes to improve driver and remote HDMA setup
- fsl-edma fixes for SoC hange, irq init and byte calculations and
sparse fixes
- idxd: safe user copy of completion record fix
- ptdma: consistent DMA mask fix
* tag 'dmaengine-fix2-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dmaengine: ptdma: use consistent DMA masks
dmaengine: fsl-qdma: add __iomem and struct in union to fix sparse warning
dmaengine: idxd: Ensure safe user copy of completion record
dmaengine: fsl-edma: correct max_segment_size setting
dmaengine: idxd: Remove shadow Event Log head stored in idxd
dmaengine: fsl-edma: correct calculation of 'nbytes' in multi-fifo scenario
dmaengine: fsl-qdma: init irq after reg initialization
dmaengine: fsl-qdma: fix SoC may hang on 16 byte unaligned read
dmaengine: dw-edma: eDMA: Add sync read before starting the DMA transfer in remote setup
dmaengine: dw-edma: HDMA: Add sync read before starting the DMA transfer in remote setup
dmaengine: dw-edma: Add HDMA remote interrupt configuration
dmaengine: dw-edma: HDMA_V0_REMOTEL_STOP_INT_EN typo fix
dmaengine: dw-edma: Fix wrong interrupt bit set for HDMA
dmaengine: dw-edma: Fix the ch_count hdma callback
- Fix IOMMU table initialisation when doing kdump over SR-IOV.
- Fix incorrect RTAS function name for resetting TCE tables.
- Fix fpu_signal selftest failures since a recent change.
Thanks to: Gaurav Batra, Nathan Lynch.
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Merge tag 'powerpc-6.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix IOMMU table initialisation when doing kdump over SR-IOV
- Fix incorrect RTAS function name for resetting TCE tables
- Fix fpu_signal selftest failures since a recent change
Thanks to Gaurav Batra and Nathan Lynch.
* tag 'powerpc-6.8-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
selftests/powerpc: Fix fpu_signal failures
powerpc/rtas: use correct function name for resetting TCE tables
powerpc/pseries/iommu: IOMMU table is not initialized for kdump over SR-IOV
be used by kexec only
- Make sure MKTME feature detection happens at an earlier time in the
boot process so that the physical address size supported by the CPU is
properly corrected and MTRR masks are programmed properly, leading to
TDX systems booting without disable_mtrr_cleanup on the cmdline
- Make sure the different address sizes supported by the CPU are read
out as early as possible
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Merge tag 'x86_urgent_for_v6.8_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Do not reserve SETUP_RNG_SEED setup data in the e820 map as it should
be used by kexec only
- Make sure MKTME feature detection happens at an earlier time in the
boot process so that the physical address size supported by the CPU
is properly corrected and MTRR masks are programmed properly, leading
to TDX systems booting without disable_mtrr_cleanup on the cmdline
- Make sure the different address sizes supported by the CPU are read
out as early as possible
* tag 'x86_urgent_for_v6.8_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/e820: Don't reserve SETUP_RNG_SEED in e820
x86/cpu/intel: Detect TME keyid bits before setting MTRR mask registers
x86/cpu: Allow reducing x86_phys_bits during early_identify_cpu()
A workaround to suppress the continuous bus resets in the case that older
devices are connected to the modern 1394 OHCI hardware and devices
In IEEE 1394 Amendment (IEEE 1394a-2000), the short bus reset is added to
resolve the shortcomings of the long bus reset in IEEE 1394-1995. However,
it is well-known that the solution is not necessarily effective in the
mixing environment that both IEEE 1394-1995 PHY and IEEE 1394a-2000 (or
later) PHY exist, as described in section 8.4.6.2 of IEEE 1394a-2000.
The current implementation of firewire stack schedules the short bus
reset when attempting to resolve the mismatch of gap count in the certain
generation of bus topology. It can cause the continuous bus reset in the
issued environment.
The workaround simply uses the long bus reset instead of the short bus
reset. It is desirable to detect whether the issued environment or not.
However, the way to access PHY registers from remote note is firstly
defined in IEEE 1394a-2000, thus it is not available in the case.
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Merge tag 'firewire-fixes-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire fixes from Takashi Sakamoto:
"A workaround to suppress the continuous bus resets in the case that
older devices are connected to the modern 1394 OHCI hardware and
devices
In IEEE 1394 Amendment (IEEE 1394a-2000), the short bus reset is added
to resolve the shortcomings of the long bus reset in IEEE 1394-1995.
However, it is well-known that the solution is not necessarily
effective in the mixing environment that both IEEE 1394-1995 PHY and
IEEE 1394a-2000 (or later) PHY exist, as described in section 8.4.6.2
of IEEE 1394a-2000.
The current implementation of firewire stack schedules the short bus
reset when attempting to resolve the mismatch of gap count in the
certain generation of bus topology. It can cause the continuous bus
reset in the issued environment.
The workaround simply uses the long bus reset instead of the short bus
reset. It is desirable to detect whether the issued environment or
not. However, the way to access PHY registers from remote note is
firstly defined in IEEE 1394a-2000, thus it is not available in the
case"
* tag 'firewire-fixes-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: core: use long bus reset on gap count error
* Drop experimental warning for FSDAX.
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>
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Merge tag 'xfs-6.8-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fix from Chandan Babu:
"Drop experimental warning message when mounting an xfs filesystem on
an fsdax device. We now consider xfs on fsdax to be stable"
* tag 'xfs-6.8-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: drop experimental warning for FSDAX
- fix resource freeing ordering in error path when adding a GPIO chip
- only set pins to output after the reset is complete in gpio-74x164
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Merge tag 'gpio-fixes-for-v6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix resource freeing ordering in error path when adding a GPIO chip
- only set pins to output after the reset is complete in gpio-74x164
* tag 'gpio-fixes-for-v6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: fix resource unwinding order in error path
gpiolib: Fix the error path order in gpiochip_add_data_with_key()
gpio: 74x164: Enable output pins after registers are reset
In commit 19416123ab ("block: define 'struct bvec_iter' as packed"),
what we need is to save the 4byte padding, and avoid `bio` to spread on
one extra cache line.
It is enough to define it as '__packed __aligned(4)', as '__packed'
alone means byte aligned, and can cause compiler to generate horrible
code on architectures that don't support unaligned access in case that
bvec_iter is embedded in other structures.
Cc: Mikulas Patocka <mpatocka@redhat.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 19416123ab ("block: define 'struct bvec_iter' as packed")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Two small fixes, all in drivers (the more obsolete mpt3sas and the
newer mpi3mr).
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:
"Two small fixes, all in drivers (the more obsolete mpt3sas and the
newer mpi3mr)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: mpt3sas: Prevent sending diag_reset when the controller is ready
scsi: mpi3mr: Reduce stack usage in mpi3mr_refresh_sas_ports()
Four syzkaller found bugs:
- Corruption during error unwind in iommufd_access_change_ioas()
- Overlapping IDs in the test suite due to out of order destruction
- Missing locking for access->ioas in the test suite
- False failures in the test suite validation logic with huge pages
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Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd fixes from Jason Gunthorpe:
"Four syzkaller found bugs:
- Corruption during error unwind in iommufd_access_change_ioas()
- Overlapping IDs in the test suite due to out of order destruction
- Missing locking for access->ioas in the test suite
- False failures in the test suite validation logic with huge pages"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd:
iommufd/selftest: Don't check map/unmap pairing with HUGE_PAGES
iommufd: Fix protection fault in iommufd_test_syz_conv_iova
iommufd/selftest: Fix mock_dev_num bug
iommufd: Fix iopt_access_list_id overwrite bug
One fix for a bug in fw_devlink handling of OF graph. This doesn't
completely fix the reported problems, but it's with users adding out of
tree code.
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Merge tag 'devicetree-fixes-for-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fix from Rob Herring:
"One fix for a bug in fw_devlink handling of OF graph. This doesn't
completely fix the reported problems, but it's with users adding out
of tree code"
* tag 'devicetree-fixes-for-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: property: fw_devlink: Fix stupid bug in remote-endpoint parsing
Introduced a stupid bug in commit 782bfd03c3 ("of: property: Improve
finding the supplier of a remote-endpoint property") due to a last minute
incorrect edit of "index !=0" into "!index". This patch fixes it to be
"index > 0" to match the comment right next to it.
Reported-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://lore.kernel.org/lkml/20240223171849.10f9901d@booty/
Fixes: 782bfd03c3 ("of: property: Improve finding the supplier of a remote-endpoint property")
Signed-off-by: Saravana Kannan <saravanak@google.com>
Reviewed-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://lore.kernel.org/r/20240224052436.3552333-1-saravanak@google.com
Signed-off-by: Rob Herring <robh@kernel.org>
* A fix for detecting ".option arch" support on not-yet-released LLVM
builds.
* A fix for a missing TLB flush when modifying non-leaf PTEs.
* A handufl of fixes for T-Head custom extensions.
* A fix for systems with the legacy PMU, that manifests as a crash on
kernels built without SBI PMU support.
* A fix for systems that clear *envcfg on suspend, which manifests as
cbo.zero trapping after resume.
* A pair of fixes for Svnapot systems, including removing Svnapot
support for huge vmalloc/vmap regions.
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Merge tag 'riscv-for-linus-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- detect ".option arch" support on not-yet-released LLVM builds
- fix missing TLB flush when modifying non-leaf PTEs
- fixes for T-Head custom extensions
- fix for systems with the legacy PMU, that manifests as a crash on
kernels built without SBI PMU support
- fix for systems that clear *envcfg on suspend, which manifests as
cbo.zero trapping after resume
- fixes for Svnapot systems, including removing Svnapot support for
huge vmalloc/vmap regions
* tag 'riscv-for-linus-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: Sparse-Memory/vmemmap out-of-bounds fix
riscv: Fix pte_leaf_size() for NAPOT
Revert "riscv: mm: support Svnapot in huge vmap"
riscv: Save/restore envcfg CSR during CPU suspend
riscv: Add a custom ISA extension for the [ms]envcfg CSR
riscv: Fix enabling cbo.zero when running in M-mode
perf: RISCV: Fix panic on pmu overflow handler
MAINTAINERS: Update SiFive driver maintainers
drivers: perf: ctr_get_width function for legacy is not defined
drivers: perf: added capabilities for legacy PMU
RISC-V: Ignore V from the riscv,isa DT property on older T-Head CPUs
riscv: Fix build error if !CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
riscv: mm: fix NOCACHE_THEAD does not set bit[61] correctly
riscv: add CALLER_ADDRx support
RISC-V: Drop invalid test from CONFIG_AS_HAS_OPTION_ARCH
kbuild: Add -Wa,--fatal-warnings to as-instr invocation
riscv: tlb: fix __p*d_free_tlb()
being necessary after all to enable cluster upgrades from problematic
v18.2.0 and v18.2.1 releases.
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Merge tag 'ceph-for-6.8-rc7' of https://github.com/ceph/ceph-client
Pull ceph fix from Ilya Dryomov:
"Catch up with mdsmap encoding rectification which ended up being
necessary after all to enable cluster upgrades from problematic
v18.2.0 and v18.2.1 releases"
* tag 'ceph-for-6.8-rc7' of https://github.com/ceph/ceph-client:
ceph: switch to corrected encoding of max_xattr_size in mdsmap
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Merge tag 'for-6.8-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
- fix freeing allocated id for anon dev when snapshot creation fails
- fiemap fixes:
- followup for a recent deadlock fix, ranges that fiemap can access
can still race with ordered extent completion
- make sure fiemap with SYNC flag does not race with writes
* tag 'for-6.8-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix double free of anonymous device after snapshot creation failure
btrfs: ensure fiemap doesn't race with writes when FIEMAP_FLAG_SYNC is given
btrfs: fix race between ordered extent completion and fiemap
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Merge tag 'vfs-6.8-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
"Two small fixes:
- Fix an endless loop during afs directory iteration caused by not
skipping silly-rename files correctly.
- Fix reporting of completion events for aio causing leaks in
userspace. This is based on the fix last week as it's now possible
to recognize aio events submitted through the old aio interface"
* tag 'vfs-6.8-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
fs/aio: Make io_cancel() generate completions again
afs: Fix endless loop in directory parsing
- Fix SVA handle sharing in multi device case
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Merge tag 'iommu-fix-v6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fix from Joerg Roedel:
- Fix SVA handle sharing in multi device case
* tag 'iommu-fix-v6.8-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/sva: Fix SVA handle sharing in multi device case
- Fix phys_addr_t size confusion in 32-bit capsule loader
- Reduce maximum EFI variable name size to 512 to work around buggy
firmware
- Drop some redundant code from efivarfs while at it
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Merge tag 'efi-fixes-for-v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fixes from Ard Biesheuvel:
"Only the EFI variable name size change is significant, and will be
backported once it lands. The others are cleanup.
- Fix phys_addr_t size confusion in 32-bit capsule loader
- Reduce maximum EFI variable name size to 512 to work around buggy
firmware
- Drop some redundant code from efivarfs while at it"
* tag 'efi-fixes-for-v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efivarfs: Drop 'duplicates' bool parameter on efivar_init()
efivarfs: Drop redundant cleanup on fill_super() failure
efivarfs: Request at most 512 bytes for variable names
efi/capsule-loader: fix incorrect allocation size
The amount of changes wasn't as small as wished, but all reasonably
small fixes. There is a PCM core API change, which is for correcting
the behavior change we took in 6.8. The rest are device-specific
fixes for ASoC AMD, Qualcomm, Cirrus codecs, HD-audio quirks & co.
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Merge tag 'sound-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"The amount of changes wasn't as small as wished, but all reasonably
small fixes. There is a PCM core API change, which is for correcting
the behavior change we took in 6.8. The rest are device-specific fixes
for ASoC AMD, Qualcomm, Cirrus codecs, HD-audio quirks & co"
* tag 'sound-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: amd: yc: Fix non-functional mic on Lenovo 21J2
ASoC: amd: yc: add new YC platform variant (0x63) support
ALSA: hda/realtek - ALC285 reduce pop noise from Headphone port
ASoC: amd: yc: Add Lenovo ThinkBook 21J0 into DMI quirk table
ALSA: hda/realtek: Add special fixup for Lenovo 14IRP8
ASoC: soc-card: Fix missing locking in snd_soc_card_get_kcontrol()
ALSA: hda/realtek: tas2781: enable subwoofer volume control
ALSA: pcm: clarify and fix default msbits value for all formats
ASoC: qcom: Fix uninitialized pointer dmactl
ALSA: hda/realtek: fix mute/micmute LED For HP mt440
ALSA: Drop leftover snd-rtctimer stuff from Makefile
ALSA: ump: Fix the discard error code from snd_ump_legacy_open()
ALSA: hda/realtek: Enable Mute LED on HP 840 G8 (MB 8AB8)
ASoC: cs35l56: Must clear HALO_STATE before issuing SYSTEM_RESET
ALSA: hda/realtek: Fix top speaker connection on Dell Inspiron 16 Plus 7630
ALSA: firewire-lib: fix to check cycle continuity
buddy:
- two allocation fixes + unit test
fbcon:
- font restore syzkaller fix
ttm:
- kunit test fix
bridge:
- fix aux-hpd leaks
- fix aux-hpd registration
- fix use after free in soc/qcom
- fix boot on soc/qcom
xe:
- A couple of tracepoint updates from Priyanka and Lucas.
- Make sure BINDs are completed before accepting UNBINDs on LR vms.
- Don't arbitrarily restrict max number of batched binds.
- Add uapi for dumpable bos (agreed on IRC).
- Remove unused uapi flags and a leftover comment.
- A couple of fixes related to the execlist backend.
msm:
- DP: Revert a change which was causing a HDP regression
amdgpu:
- Fix potential buffer overflow
- Fix power min cap
- Suspend/resume fix
- SI PM fix
- eDP fix
nouveau:
- fix a misreported VRAM sizing
- fix a regression in suspend/resume due to freeing
tegra:
- host1x reset fix
- only remove existing driver if display is possible
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Merge tag 'drm-fixes-2024-03-01' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Bunch of fixes, xe, amdgpu, nouveau and tegra all have a few. Then
drm/bridge including some drivers/soc fallout fixes. The biggest thing
in here is a new unit test for some buddy allocator fixes, otherwise a
misc fbcon, ttm unit test and one msm revert.
Seems pretty normal for this stage.
buddy:
- two allocation fixes + unit test
fbcon:
- font restore syzkaller fix
ttm:
- kunit test fix
bridge:
- fix aux-hpd leaks
- fix aux-hpd registration
- fix use after free in soc/qcom
- fix boot on soc/qcom
xe:
- A couple of tracepoint updates from Priyanka and Lucas
- Make sure BINDs are completed before accepting UNBINDs on LR vms
- Don't arbitrarily restrict max number of batched binds
- Add uapi for dumpable bos (agreed on IRC)
- Remove unused uapi flags and a leftover comment
- A couple of fixes related to the execlist backend
msm:
- DP: Revert a change which was causing a HDP regression
amdgpu:
- Fix potential buffer overflow
- Fix power min cap
- Suspend/resume fix
- SI PM fix
- eDP fix
nouveau:
- fix a misreported VRAM sizing
- fix a regression in suspend/resume due to freeing
tegra:
- host1x reset fix
- only remove existing driver if display is possible"
* tag 'drm-fixes-2024-03-01' of https://gitlab.freedesktop.org/drm/kernel: (32 commits)
drm/nouveau: keep DMA buffers required for suspend/resume
nouveau: report byte usage in VRAM usage
drm/xe/xe_trace: Add move_lacks_source detail to xe_bo_move trace
drm/xe: Deny unbinds if uapi ufence pending
drm/xe: Expose user fence from xe_sync_entry
drm/xe: Use pointers in trace events
drm/xe/xe_bo_move: Enhance xe_bo_move trace
drm/xe/mmio: fix build warning for BAR resize on 32-bit
drm/xe: get rid of MAX_BINDS
drm/xe: Use vmalloc for array of bind allocation in bind IOCTL
drm/xe: Don't support execlists in xe_gt_tlb_invalidation layer
drm/xe: Fix execlist splat
drm/xe/uapi: Remove unused flags
drm/xe/uapi: Remove DRM_XE_VM_BIND_FLAG_ASYNC comment left over
drm/xe: Add uapi for dumpable bos
drm/amd/display: Add monitor patch for specific eDP
Revert "drm/msm/dp: use drm_bridge_hpd_notify() to report HPD status changes"
drm/tests/drm_buddy: add alloc_range_bias test
drm/buddy: check range allocation matches alignment
drm/buddy: fix range bias
...
- fprobe: Fix to allocate entry_data_size buffer for each rethook
instance. This fixes a buffer overrun bug (which leads a kernel
crash) when fprobe user uses its entry_data in the entry_handler.
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Merge tag 'probes-fixes-v6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull fprobe fix from Masami Hiramatsu:
- allocate entry_data_size buffer for each rethook instance.
This fixes a buffer overrun bug (which leads a kernel crash)
when fprobe user uses its entry_data in the entry_handler.
* tag 'probes-fixes-v6.8-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
fprobe: Fix to allocate entry_data_size buffer with rethook instances
Since tomoyo_write_control() updates head->write_buf when write()
of long lines is requested, we need to fetch head->write_buf after
head->io_sem is held. Otherwise, concurrent write() requests can
cause use-after-free-write and double-free problems.
Reported-by: Sam Sun <samsun1006219@gmail.com>
Closes: https://lkml.kernel.org/r/CAEkJfYNDspuGxYx5kym8Lvp--D36CMDUErg4rxfWFJuPbbji8g@mail.gmail.com
Fixes: bd03a3e4c9 ("TOMOYO: Add policy namespace support.")
Cc: <stable@vger.kernel.org> # Linux 3.1+
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
SETUP_RNG_SEED in setup_data is supplied by kexec and should
not be reserved in the e820 map.
Doing so reserves 16 bytes of RAM when booting with kexec.
(16 bytes because data->len is zeroed by parse_setup_data so only
sizeof(setup_data) is reserved.)
When kexec is used repeatedly, each boot adds two entries in the
kexec-provided e820 map as the 16-byte range splits a larger
range of usable memory. Eventually all of the 128 available entries
get used up. The next split will result in losing usable memory
as the new entries cannot be added to the e820 map.
Fixes: 68b8e9713c ("x86/setup: Use rng seeds from setup_data")
Signed-off-by: Jiri Bohac <jbohac@suse.cz>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: <stable@kernel.org>
Link: https://lore.kernel.org/r/ZbmOjKnARGiaYBd5@dwarf.suse.cz
iommu_sva_bind_device will directly goto out in multi-device
case when found existing domain, ignoring list_add handle,
which causes the handle to fail to be shared.
Fixes: 65d4418c50 ("iommu/sva: Restore SVA handle sharing")
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240227064821.128-1-zhangfei.gao@linaro.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
My recent commit e5d00aaac6 ("selftests/powerpc: Check all FPRs in
fpu_preempt") inadvertently broke the fpu_signal test.
It needs to take into account that fpu_preempt now loads 32 FPRs, so
enlarge darray.
Also use the newly added randomise_darray() to properly randomise darray.
Finally the checking done in signal_fpu_sig() needs to skip checking
f30/f31, because they are used as scratch registers in check_all_fprs(),
called by preempt_fpu(), and so could hold other values when the signal
is taken.
Fixes: e5d00aaac6 ("selftests/powerpc: Check all FPRs in fpu_preempt")
Reported-by: Spoorthy <spoorthy@linux.ibm.com>
Depends-on: 2ba107f679 ("selftests/powerpc: Generate better bit patterns for FPU tests")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240301101035.1230024-1-mpe@ellerman.id.au
Hogs are added *after* ACPI so should be removed *before* in error path.
Fixes: a411e81e61 ("gpiolib: add hogs support for machine code")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
After shuffling the code, error path wasn't updated correctly.
Fix it here.
Fixes: 2f4133bb5f ("gpiolib: No need to call gpiochip_remove_pin_ranges() twice")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Chip outputs are enabled[1] before actual reset is performed[2] which might
cause pin output value to flip flop if previous pin value was set to 1.
Fix that behavior by making sure chip is fully reset before all outputs are
enabled.
Flip-flop can be noticed when module is removed and inserted again and one of
the pins was changed to 1 before removal. 100 microsecond flipping is
noticeable on oscilloscope (100khz SPI bus).
For a properly reset chip - output is enabled around 100 microseconds (on 100khz
SPI bus) later during probing process hence should be irrelevant behavioral
change.
Fixes: 7ebc194d0f (gpio: 74x164: Introduce 'enable-gpios' property)
Link: https://elixir.bootlin.com/linux/v6.7.4/source/drivers/gpio/gpio-74x164.c#L130 [1]
Link: https://elixir.bootlin.com/linux/v6.7.4/source/drivers/gpio/gpio-74x164.c#L150 [2]
Signed-off-by: Arturas Moskvinas <arturas.moskvinas@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Nouveau deallocates a few buffers post GPU init which are required for GPU suspend/resume to function correctly.
This is likely not as big an issue on systems where the NVGPU is the only GPU, but on multi-GPU set ups it leads to a regression where the kernel module errors and results in a system-wide rendering freeze.
This commit addresses that regression by moving the two buffers required for suspend and resume to be deallocated at driver unload instead of post init.
Fixes: 042b5f8384 ("drm/nouveau: fix several DMA buffer leaks")
Signed-off-by: Sid Pranjale <sidpranjale127@protonmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Turns out usage is always in bytes not shifted.
Fixes: 72fa02fdf8 ("nouveau: add an ioctl to report vram usage")
Signed-off-by: Dave Airlie <airlied@redhat.com>
- A couple of tracepoint updates from Priyanka and Lucas.
- Make sure BINDs are completed before accepting UNBINDs on LR vms.
- Don't arbitrarily restrict max number of batched binds.
- Add uapi for dumpable bos (agreed on IRC).
- Remove unused uapi flags and a leftover comment.
Driver Changes:
- A couple of fixes related to the execlist backend.
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Merge tag 'drm-xe-fixes-2024-02-29' of https://gitlab.freedesktop.org/drm/xe/kernel into drm-fixes
UAPI Changes:
- A couple of tracepoint updates from Priyanka and Lucas.
- Make sure BINDs are completed before accepting UNBINDs on LR vms.
- Don't arbitrarily restrict max number of batched binds.
- Add uapi for dumpable bos (agreed on IRC).
- Remove unused uapi flags and a leftover comment.
Driver Changes:
- A couple of fixes related to the execlist backend.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Hellstrom <thomas.hellstrom@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZeCBg4MA2hd1oggN@fedora
a use-after-free fix and a boot fix for a pmic_glink qcom driver in
drivers/soc, a fix for the simpledrm/tegra transition, a kunit fix for
the TTM tests, a font handling fix for fbcon, two allocation fixes and a
kunit test to cover them for drm/buddy
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Merge tag 'drm-misc-fixes-2024-02-29' of https://anongit.freedesktop.org/git/drm/drm-misc into drm-fixes
A reset fix for host1x, a resource leak fix and a probe fix for aux-hpd,
a use-after-free fix and a boot fix for a pmic_glink qcom driver in
drivers/soc, a fix for the simpledrm/tegra transition, a kunit fix for
the TTM tests, a font handling fix for fbcon, two allocation fixes and a
kunit test to cover them for drm/buddy
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240229-angelic-adorable-teal-fbfabb@houat
When creating a snapshot we may do a double free of an anonymous device
in case there's an error committing the transaction. The second free may
result in freeing an anonymous device number that was allocated by some
other subsystem in the kernel or another btrfs filesystem.
The steps that lead to this:
1) At ioctl.c:create_snapshot() we allocate an anonymous device number
and assign it to pending_snapshot->anon_dev;
2) Then we call btrfs_commit_transaction() and end up at
transaction.c:create_pending_snapshot();
3) There we call btrfs_get_new_fs_root() and pass it the anonymous device
number stored in pending_snapshot->anon_dev;
4) btrfs_get_new_fs_root() frees that anonymous device number because
btrfs_lookup_fs_root() returned a root - someone else did a lookup
of the new root already, which could some task doing backref walking;
5) After that some error happens in the transaction commit path, and at
ioctl.c:create_snapshot() we jump to the 'fail' label, and after
that we free again the same anonymous device number, which in the
meanwhile may have been reallocated somewhere else, because
pending_snapshot->anon_dev still has the same value as in step 1.
Recently syzbot ran into this and reported the following trace:
------------[ cut here ]------------
ida_free called for id=51 which is not allocated.
WARNING: CPU: 1 PID: 31038 at lib/idr.c:525 ida_free+0x370/0x420 lib/idr.c:525
Modules linked in:
CPU: 1 PID: 31038 Comm: syz-executor.2 Not tainted 6.8.0-rc4-syzkaller-00410-gc02197fc9076 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:ida_free+0x370/0x420 lib/idr.c:525
Code: 10 42 80 3c 28 (...)
RSP: 0018:ffffc90015a67300 EFLAGS: 00010246
RAX: be5130472f5dd000 RBX: 0000000000000033 RCX: 0000000000040000
RDX: ffffc90009a7a000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90015a673f0 R08: ffffffff81577992 R09: 1ffff92002b4cdb4
R10: dffffc0000000000 R11: fffff52002b4cdb5 R12: 0000000000000246
R13: dffffc0000000000 R14: ffffffff8e256b80 R15: 0000000000000246
FS: 00007fca3f4b46c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f167a17b978 CR3: 000000001ed26000 CR4: 0000000000350ef0
Call Trace:
<TASK>
btrfs_get_root_ref+0xa48/0xaf0 fs/btrfs/disk-io.c:1346
create_pending_snapshot+0xff2/0x2bc0 fs/btrfs/transaction.c:1837
create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1931
btrfs_commit_transaction+0xf1c/0x3740 fs/btrfs/transaction.c:2404
create_snapshot+0x507/0x880 fs/btrfs/ioctl.c:848
btrfs_mksubvol+0x5d0/0x750 fs/btrfs/ioctl.c:998
btrfs_mksnapshot+0xb5/0xf0 fs/btrfs/ioctl.c:1044
__btrfs_ioctl_snap_create+0x387/0x4b0 fs/btrfs/ioctl.c:1306
btrfs_ioctl_snap_create_v2+0x1ca/0x400 fs/btrfs/ioctl.c:1393
btrfs_ioctl+0xa74/0xd40
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xfe/0x170 fs/ioctl.c:857
do_syscall_64+0xfb/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fca3e67dda9
Code: 28 00 00 00 (...)
RSP: 002b:00007fca3f4b40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fca3e7abf80 RCX: 00007fca3e67dda9
RDX: 00000000200005c0 RSI: 0000000050009417 RDI: 0000000000000003
RBP: 00007fca3e6ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fca3e7abf80 R15: 00007fff6bf95658
</TASK>
Where we get an explicit message where we attempt to free an anonymous
device number that is not currently allocated. It happens in a different
code path from the example below, at btrfs_get_root_ref(), so this change
may not fix the case triggered by syzbot.
To fix at least the code path from the example above, change
btrfs_get_root_ref() and its callers to receive a dev_t pointer argument
for the anonymous device number, so that in case it frees the number, it
also resets it to 0, so that up in the call chain we don't attempt to do
the double free.
CC: stable@vger.kernel.org # 5.10+
Link: https://lore.kernel.org/linux-btrfs/000000000000f673a1061202f630@google.com/
Fixes: e03ee2fe87 ("btrfs: do not ASSERT() if the newly created subvolume already got read")
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
When FIEMAP_FLAG_SYNC is given to fiemap the expectation is that that
are no concurrent writes and we get a stable view of the inode's extent
layout.
When the flag is given we flush all IO (and wait for ordered extents to
complete) and then lock the inode in shared mode, however that leaves open
the possibility that a write might happen right after the flushing and
before locking the inode. So fix this by flushing again after locking the
inode - we leave the initial flushing before locking the inode to avoid
holding the lock and blocking other RO operations while waiting for IO
and ordered extents to complete. The second flushing while holding the
inode's lock will most of the time do nothing or very little since the
time window for new writes to have happened is small.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
For fiemap we recently stopped locking the target extent range for the
whole duration of the fiemap call, in order to avoid a deadlock in a
scenario where the fiemap buffer happens to be a memory mapped range of
the same file. This use case is very unlikely to be useful in practice but
it may be triggered by fuzz testing (syzbot, etc).
However by not locking the target extent range for the whole duration of
the fiemap call we can race with an ordered extent. This happens like
this:
1) The fiemap task finishes processing a file extent item that covers
the file range [512K, 1M[, and that file extent item is the last item
in the leaf currently being processed;
2) And ordered extent for the file range [768K, 2M[, in COW mode,
completes (btrfs_finish_one_ordered()) and the file extent item
covering the range [512K, 1M[ is trimmed to cover the range
[512K, 768K[ and then a new file extent item for the range [768K, 2M[
is inserted in the inode's subvolume tree;
3) The fiemap task calls fiemap_next_leaf_item(), which then calls
btrfs_next_leaf() to find the next leaf / item. This finds that the
the next key following the one we previously processed (its type is
BTRFS_EXTENT_DATA_KEY and its offset is 512K), is the key corresponding
to the new file extent item inserted by the ordered extent, which has
a type of BTRFS_EXTENT_DATA_KEY and an offset of 768K;
4) Later the fiemap code ends up at emit_fiemap_extent() and triggers
the warning:
if (cache->offset + cache->len > offset) {
WARN_ON(1);
return -EINVAL;
}
Since we get 1M > 768K, because the previously emitted entry for the
old extent covering the file range [512K, 1M[ ends at an offset that
is greater than the new extent's start offset (768K). This makes fiemap
fail with -EINVAL besides triggering the warning that produces a stack
trace like the following:
[1621.677651] ------------[ cut here ]------------
[1621.677656] WARNING: CPU: 1 PID: 204366 at fs/btrfs/extent_io.c:2492 emit_fiemap_extent+0x84/0x90 [btrfs]
[1621.677899] Modules linked in: btrfs blake2b_generic (...)
[1621.677951] CPU: 1 PID: 204366 Comm: pool Not tainted 6.8.0-rc5-btrfs-next-151+ #1
[1621.677954] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014
[1621.677956] RIP: 0010:emit_fiemap_extent+0x84/0x90 [btrfs]
[1621.678033] Code: 2b 4c 89 63 (...)
[1621.678035] RSP: 0018:ffffab16089ffd20 EFLAGS: 00010206
[1621.678037] RAX: 00000000004fa000 RBX: ffffab16089ffe08 RCX: 0000000000009000
[1621.678039] RDX: 00000000004f9000 RSI: 00000000004f1000 RDI: ffffab16089ffe90
[1621.678040] RBP: 00000000004f9000 R08: 0000000000001000 R09: 0000000000000000
[1621.678041] R10: 0000000000000000 R11: 0000000000001000 R12: 0000000041d78000
[1621.678043] R13: 0000000000001000 R14: 0000000000000000 R15: ffff9434f0b17850
[1621.678044] FS: 00007fa6e20006c0(0000) GS:ffff943bdfa40000(0000) knlGS:0000000000000000
[1621.678046] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[1621.678048] CR2: 00007fa6b0801000 CR3: 000000012d404002 CR4: 0000000000370ef0
[1621.678053] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[1621.678055] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[1621.678056] Call Trace:
[1621.678074] <TASK>
[1621.678076] ? __warn+0x80/0x130
[1621.678082] ? emit_fiemap_extent+0x84/0x90 [btrfs]
[1621.678159] ? report_bug+0x1f4/0x200
[1621.678164] ? handle_bug+0x42/0x70
[1621.678167] ? exc_invalid_op+0x14/0x70
[1621.678170] ? asm_exc_invalid_op+0x16/0x20
[1621.678178] ? emit_fiemap_extent+0x84/0x90 [btrfs]
[1621.678253] extent_fiemap+0x766/0xa30 [btrfs]
[1621.678339] btrfs_fiemap+0x45/0x80 [btrfs]
[1621.678420] do_vfs_ioctl+0x1e4/0x870
[1621.678431] __x64_sys_ioctl+0x6a/0xc0
[1621.678434] do_syscall_64+0x52/0x120
[1621.678445] entry_SYSCALL_64_after_hwframe+0x6e/0x76
There's also another case where before calling btrfs_next_leaf() we are
processing a hole or a prealloc extent and we had several delalloc ranges
within that hole or prealloc extent. In that case if the ordered extents
complete before we find the next key, we may end up finding an extent item
with an offset smaller than (or equals to) the offset in cache->offset.
So fix this by changing emit_fiemap_extent() to address these three
scenarios like this:
1) For the first case, steps listed above, adjust the length of the
previously cached extent so that it does not overlap with the current
extent, emit the previous one and cache the current file extent item;
2) For the second case where he had a hole or prealloc extent with
multiple delalloc ranges inside the hole or prealloc extent's range,
and the current file extent item has an offset that matches the offset
in the fiemap cache, just discard what we have in the fiemap cache and
assign the current file extent item to the cache, since it's more up
to date;
3) For the third case where he had a hole or prealloc extent with
multiple delalloc ranges inside the hole or prealloc extent's range
and the offset of the file extent item we just found is smaller than
what we have in the cache, just skip the current file extent item
if its range end at or behind the cached extent's end, because we may
have emitted (to the fiemap user space buffer) delalloc ranges that
overlap with the current file extent item's range. If the file extent
item's range goes beyond the end offset of the cached extent, just
emit the cached extent and cache a subrange of the file extent item,
that goes from the end offset of the cached extent to the end offset
of the file extent item.
Dealing with those cases in those ways makes everything consistent by
reflecting the current state of file extent items in the btree and
without emitting extents that have overlapping ranges (which would be
confusing and violating expectations).
This issue could be triggered often with test case generic/561, and was
also hit and reported by Wang Yugui.
Reported-by: Wang Yugui <wangyugui@e16-tech.com>
Link: https://lore.kernel.org/linux-btrfs/20240223104619.701F.409509F4@e16-tech.com/
Fixes: b0ad381fa7 ("btrfs: fix deadlock with fiemap and extent locking")
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
We have one outstanding issue with the stmmac driver, which may
be a LOCKDEP false positive, not a blocker.
Current release - regressions:
- netfilter: nf_tables: re-allow NFPROTO_INET in
nft_(match/target)_validate()
- eth: ionic: fix error handling in PCI reset code
Current release - new code bugs:
- eth: stmmac: complete meta data only when enabled, fix null-deref
- kunit: fix again checksum tests on big endian CPUs
Previous releases - regressions:
- veth: try harder when allocating queue memory
- Bluetooth:
- hci_bcm4377: do not mark valid bd_addr as invalid
- hci_event: fix handling of HCI_EV_IO_CAPA_REQUEST
Previous releases - always broken:
- info leak in __skb_datagram_iter() on netlink socket
- mptcp:
- map v4 address to v6 when destroying subflow
- fix potential wake-up event loss due to sndbuf auto-tuning
- fix double-free on socket dismantle
- wifi: nl80211: reject iftype change with mesh ID change
- fix small out-of-bound read when validating netlink be16/32 types
- rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
- ipv6: fix potential "struct net" ref-leak in inet6_rtm_getaddr()
- ip_tunnel: prevent perpetual headroom growth with huge number of
tunnels on top of each other
- mctp: fix skb leaks on error paths of mctp_local_output()
- eth: ice: fixes for DPLL state reporting
- dpll: rely on rcu for netdev_dpll_pin() to prevent UaF
- eth: dpaa: accept phy-interface-type = "10gbase-r" in the device tree
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from bluetooth, WiFi and netfilter.
We have one outstanding issue with the stmmac driver, which may be a
LOCKDEP false positive, not a blocker.
Current release - regressions:
- netfilter: nf_tables: re-allow NFPROTO_INET in
nft_(match/target)_validate()
- eth: ionic: fix error handling in PCI reset code
Current release - new code bugs:
- eth: stmmac: complete meta data only when enabled, fix null-deref
- kunit: fix again checksum tests on big endian CPUs
Previous releases - regressions:
- veth: try harder when allocating queue memory
- Bluetooth:
- hci_bcm4377: do not mark valid bd_addr as invalid
- hci_event: fix handling of HCI_EV_IO_CAPA_REQUEST
Previous releases - always broken:
- info leak in __skb_datagram_iter() on netlink socket
- mptcp:
- map v4 address to v6 when destroying subflow
- fix potential wake-up event loss due to sndbuf auto-tuning
- fix double-free on socket dismantle
- wifi: nl80211: reject iftype change with mesh ID change
- fix small out-of-bound read when validating netlink be16/32 types
- rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
- ipv6: fix potential "struct net" ref-leak in inet6_rtm_getaddr()
- ip_tunnel: prevent perpetual headroom growth with huge number of
tunnels on top of each other
- mctp: fix skb leaks on error paths of mctp_local_output()
- eth: ice: fixes for DPLL state reporting
- dpll: rely on rcu for netdev_dpll_pin() to prevent UaF
- eth: dpaa: accept phy-interface-type = '10gbase-r' in the device
tree"
* tag 'net-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (73 commits)
dpll: fix build failure due to rcu_dereference_check() on unknown type
kunit: Fix again checksum tests on big endian CPUs
tls: fix use-after-free on failed backlog decryption
tls: separate no-async decryption request handling from async
tls: fix peeking with sync+async decryption
tls: decrement decrypt_pending if no async completion will be called
gtp: fix use-after-free and null-ptr-deref in gtp_newlink()
net: hsr: Use correct offset for HSR TLV values in supervisory HSR frames
igb: extend PTP timestamp adjustments to i211
rtnetlink: fix error logic of IFLA_BRIDGE_FLAGS writing back
tools: ynl: fix handling of multiple mcast groups
selftests: netfilter: add bridge conntrack + multicast test case
netfilter: bridge: confirm multicast packets before passing them up the stack
netfilter: nf_tables: allow NFPROTO_INET in nft_(match/target)_validate()
Bluetooth: qca: Fix triggering coredump implementation
Bluetooth: hci_qca: Set BDA quirk bit if fwnode exists in DT
Bluetooth: qca: Fix wrong event type for patch config command
Bluetooth: Enforce validation on max value of connection interval
Bluetooth: hci_event: Fix handling of HCI_EV_IO_CAPA_REQUEST
Bluetooth: mgmt: Fix limited discoverable off timeout
...
Offset vmemmap so that the first page of vmemmap will be mapped
to the first page of physical memory in order to ensure that
vmemmap’s bounds will be respected during
pfn_to_page()/page_to_pfn() operations.
The conversion macros will produce correct SV39/48/57 addresses
for every possible/valid DRAM_BASE inside the physical memory limits.
v2:Address Alex's comments
Suggested-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Dimitris Vlachos <dvlachos@ics.forth.gr>
Reported-by: Dimitris Vlachos <dvlachos@ics.forth.gr>
Closes: https://lore.kernel.org/linux-riscv/20240202135030.42265-1-csd4492@csd.uoc.gr
Fixes: d95f1a542c ("RISC-V: Implement sparsemem")
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240229191723.32779-1-dvlachos@ics.forth.gr
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Tasmiya reports that their compiler complains that we deref
a pointer to unknown type with rcu_dereference_rtnl():
include/linux/rcupdate.h:439:9: error: dereferencing pointer to incomplete type ‘struct dpll_pin’
Unclear what compiler it is, at the moment, and we can't report
but since DPLL can't be a module - move the code from the header
into the source file.
Fixes: 0d60d8df6f ("dpll: rely on rcu for netdev_dpll_pin()")
Reported-by: Tasmiya Nalatwad <tasmiya@linux.vnet.ibm.com>
Link: https://lore.kernel.org/all/3fcf3a2c-1c1b-42c1-bacb-78fdcd700389@linux.vnet.ibm.com/
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240229190515.2740221-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Alexandre Ghiti <alexghiti@rivosinc.com> says:
This contains 2 fixes for NAPOT: patch 1 disables the use of NAPOT
mapping for vmalloc/vmap and patch 2 implements pte_leaf_size() to
report NAPOT size.
* b4-shazam-merge:
riscv: Fix pte_leaf_size() for NAPOT
Revert "riscv: mm: support Svnapot in huge vmap"
Link: https://lore.kernel.org/r/20240227205016.121901-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This reverts commit ce173474cf.
We cannot correctly deal with NAPOT mappings in vmalloc/vmap because if
some part of a NAPOT mapping is unmapped, the remaining mapping is not
updated accordingly. For example:
ptr = vmalloc_huge(64 * 1024, GFP_KERNEL);
vunmap_range((unsigned long)(ptr + PAGE_SIZE),
(unsigned long)(ptr + 64 * 1024));
leads to the following kernel page table dump:
0xffff8f8000ef0000-0xffff8f8000ef1000 0x00000001033c0000 4K PTE N .. .. D A G . . W R V
Meaning the first entry which was not unmapped still has the N bit set,
which, if accessed first and cached in the TLB, could allow access to the
unmapped range.
That's because the logic to break the NAPOT mapping does not exist and
likely won't. Indeed, to break a NAPOT mapping, we first have to clear
the whole mapping, flush the TLB and then set the new mapping ("break-
before-make" equivalent). That works fine in userspace since we can handle
any pagefault occurring on the remaining mapping but we can't handle a kernel
pagefault on such mapping.
So fix this by reverting the commit that introduced the vmap/vmalloc
support.
Fixes: ce173474cf ("riscv: mm: support Svnapot in huge vmap")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20240227205016.121901-2-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
