This patch enables KCSAN for the 64-bit version. Updated rules
for the incompatible compilation units (vdso, boot/compressed).
Signed-off-by: Nemanja Rakovic <nemanja.rakovic@syrmia.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This flag is not supported by clang, which results in a warning:
clang-14: warning: argument unused during compilation: '-mno-branch-likely' [-Wunused-command-line-argument]
This breaks cc-option, which adds -Werror to make this warning fatal and
catch flags that are not supported.
Wrap this flag in cc-option so that it does not cause cc-option to fail,
which can cause randconfigs to be really noisy, due to warnings not
getting disabled that should be.
Additionally, move the cc-option check to Kconfig so that the check is
done at configuration time, rather than build time, as builds with no
configuration change will be quicker because the cc-option call will not
need to happen in those instances.
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This Makefile checks that GCC is 4.9 or newer, which is redundant after
commit 76ae847497 ("Documentation: raise minimum supported version of
GCC to 5.1"), so cc-option can be removed.
Clang does not support -march=loongson3a so it needs to continue to use
-march=mips64r2, which no longer needs cc-option because all supported
clang versions recognize this flag.
-march=loonson3a can be used unconditionally with GCC because the
minimum supported GCC version has been bumped past 4.9.0, which won't
have the bug mentioned in the comment. The _MIPS_ISA macro redefinition
can be removed at the same time for the same reason.
Suggested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Adds support for QCN550x, which appears to be very similar to QCA956x.
Signed-off-by: Wenli Looi <wlooi@ucalgary.ca>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
fix regression introduced as part of moving to the new mount API.
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Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Various bug fixes for ext4 fast commit and inline data handling.
Also fix regression introduced as part of moving to the new mount API"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
fs/ext4: fix comments mentioning i_mutex
ext4: fix incorrect type issue during replay_del_range
jbd2: fix kernel-doc descriptions for jbd2_journal_shrink_{scan,count}()
ext4: fix potential NULL pointer dereference in ext4_fill_super()
jbd2: refactor wait logic for transaction updates into a common function
jbd2: cleanup unused functions declarations from jbd2.h
ext4: fix error handling in ext4_fc_record_modified_inode()
ext4: remove redundant max inline_size check in ext4_da_write_inline_data_begin()
ext4: fix error handling in ext4_restore_inline_data()
ext4: fast commit may miss file actions
ext4: fast commit may not fallback for ineligible commit
ext4: modify the logic of ext4_mb_new_blocks_simple
ext4: prevent used blocks from being allocated during fast commit replay
- Fix display of grouped aliased events in 'perf stat'.
- Add missing branch_sample_type to perf_event_attr__fprintf().
- Apply correct label to user/kernel symbols in branch mode.
- Fix 'perf ftrace' system_wide tracing, it has to be set before creating the maps.
- Return error if procfs isn't mounted for PID namespaces when synthesizing records
for pre-existing processes.
- Set error stream of objdump process for 'perf annotate' TUI, to avoid garbling the
screen.
- Add missing arm64 support to perf_mmap__read_self(), the kernel part got into 5.17.
- Check for NULL pointer before dereference writing debug info about a sample.
- Update UAPI copies for asound, perf_event, prctl and kvm headers.
- Fix a typo in bpf_counter_cgroup.c.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v5.17-2022-02-06' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Fix display of grouped aliased events in 'perf stat'.
- Add missing branch_sample_type to perf_event_attr__fprintf().
- Apply correct label to user/kernel symbols in branch mode.
- Fix 'perf ftrace' system_wide tracing, it has to be set before
creating the maps.
- Return error if procfs isn't mounted for PID namespaces when
synthesizing records for pre-existing processes.
- Set error stream of objdump process for 'perf annotate' TUI, to avoid
garbling the screen.
- Add missing arm64 support to perf_mmap__read_self(), the kernel part
got into 5.17.
- Check for NULL pointer before dereference writing debug info about a
sample.
- Update UAPI copies for asound, perf_event, prctl and kvm headers.
- Fix a typo in bpf_counter_cgroup.c.
* tag 'perf-tools-fixes-for-v5.17-2022-02-06' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf ftrace: system_wide collection is not effective by default
libperf: Add arm64 support to perf_mmap__read_self()
tools include UAPI: Sync sound/asound.h copy with the kernel sources
perf stat: Fix display of grouped aliased events
perf tools: Apply correct label to user/kernel symbols in branch mode
perf bpf: Fix a typo in bpf_counter_cgroup.c
perf synthetic-events: Return error if procfs isn't mounted for PID namespaces
perf session: Check for NULL pointer before dereference
perf annotate: Set error stream of objdump process for TUI
perf tools: Add missing branch_sample_type to perf_event_attr__fprintf()
tools headers UAPI: Sync linux/kvm.h with the kernel sources
tools headers UAPI: Sync linux/prctl.h with the kernel sources
perf beauty: Make the prctl arg regexp more strict to cope with PR_SET_VMA
tools headers cpufeatures: Sync with the kernel sources
tools headers UAPI: Sync linux/perf_event.h with the kernel sources
tools include UAPI: Sync sound/asound.h copy with the kernel sources
- Intel/PT: filters could crash the kernel
- Intel: default disable the PMU for SMM, some new-ish EFI firmware has
started using CPL3 and the PMU CPL filters don't discriminate against
SMM, meaning that CPL3 (userspace only) events now also count EFI/SMM
cycles.
- Fixup for perf_event_attr::sig_data
(Peter Zijlstra)
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Merge tag 'perf_urgent_for_v5.17_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Borislav Petkov:
- Intel/PT: filters could crash the kernel
- Intel: default disable the PMU for SMM, some new-ish EFI firmware has
started using CPL3 and the PMU CPL filters don't discriminate against
SMM, meaning that CPL3 (userspace only) events now also count EFI/SMM
cycles.
- Fixup for perf_event_attr::sig_data
* tag 'perf_urgent_for_v5.17_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/pt: Fix crash with stop filters in single-range mode
perf: uapi: Document perf_event_attr::sig_data truncation on 32 bit architectures
selftests/perf_events: Test modification of perf_event_attr::sig_data
perf: Copy perf_event_attr::sig_data on modification
x86/perf: Default set FREEZE_ON_SMI for all
from platform_get_irq() so that deferred probing still works
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Merge tag 'edac_urgent_for_v5.17_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Pull EDAC fixes from Borislav Petkov:
"Fix altera and xgene EDAC drivers to propagate the correct error code
from platform_get_irq() so that deferred probing still works"
* tag 'edac_urgent_for_v5.17_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
EDAC/xgene: Fix deferred probing
EDAC/altera: Fix deferred probing
The ftrace.target.system_wide must be set before invoking
evlist__create_maps(), otherwise it has no effect.
Fixes: 53be502822 ("perf ftrace: Add 'latency' subcommand")
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Acked-by: Namhyung Kim <namhyung@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220127132010.4836-1-changbin.du@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Add the arm64 variants for read_perf_counter() and read_timestamp().
Unfortunately the counter number is encoded into the instruction, so the
code is a bit verbose to enumerate all possible counters.
Tested-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: John Garry <john.garry@huawei.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20220201214056.702854-1-robh@kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-perf-users@vger.kernel.org
Picking the changes from:
06feec6005 ("ASoC: hdmi-codec: Fix OOB memory accesses")
Which entails no changes in the tooling side as it doesn't introduce new
SNDRV_PCM_IOCTL_ ioctls.
To silence this perf tools build warning:
Warning: Kernel ABI header at 'tools/include/uapi/sound/asound.h' differs from latest version at 'include/uapi/sound/asound.h'
diff -u tools/include/uapi/sound/asound.h include/uapi/sound/asound.h
Cc: Dmitry Osipenko <digetx@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/lkml/Yf+6OT+2eMrYDEeX@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This patch fixes a spelling typo in error message.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20211225005558.503935-1-standby24x7@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
For perf recording, it retrieves process info by iterating nodes in proc
fs. If we run perf in a non-root PID namespace with command:
# unshare --fork --pid perf record -e cycles -a -- test_program
... in this case, unshare command creates a child PID namespace and
launches perf tool in it, but the issue is the proc fs is not mounted
for the non-root PID namespace, this leads to the perf tool gathering
process info from its parent PID namespace.
We can use below command to observe the process nodes under proc fs:
# unshare --pid --fork ls /proc
1 137 1968 2128 3 342 48 62 78 crypto kcore net uptime
10 138 2 2142 30 35 49 63 8 devices keys pagetypeinfo version
11 139 20 2143 304 36 50 64 82 device-tree key-users partitions vmallocinfo
12 14 2011 22 305 37 51 65 83 diskstats kmsg self vmstat
128 140 2038 23 307 39 52 656 84 driver kpagecgroup slabinfo zoneinfo
129 15 2074 24 309 4 53 67 9 execdomains kpagecount softirqs
13 16 2094 241 31 40 54 68 asound fb kpageflags stat
130 164 2096 242 310 41 55 69 buddyinfo filesystems loadavg swaps
131 17 2098 25 317 42 56 70 bus fs locks sys
132 175 21 26 32 43 57 71 cgroups interrupts meminfo sysrq-trigger
133 179 2102 263 329 44 58 75 cmdline iomem misc sysvipc
134 1875 2103 27 330 45 59 76 config.gz ioports modules thread-self
135 19 2117 29 333 46 6 77 consoles irq mounts timer_list
136 1941 2121 298 34 47 60 773 cpuinfo kallsyms mtd tty
So it shows many existed tasks, since unshared command has not mounted
the proc fs for the new created PID namespace, it still accesses the
proc fs of the root PID namespace. This leads to two prominent issues:
- Firstly, PID values are mismatched between thread info and samples.
The gathered thread info are coming from the proc fs of the root PID
namespace, but samples record its PID from the child PID namespace.
- The second issue is profiled program 'test_program' returns its forked
PID number from the child PID namespace, perf tool wrongly uses this
PID number to retrieve the process info via the proc fs of the root
PID namespace.
To avoid issues, we need to mount proc fs for the child PID namespace
with the option '--mount-proc' when use unshare command:
# unshare --fork --pid --mount-proc perf record -e cycles -a -- test_program
Conversely, when the proc fs of the root PID namespace is used by child
namespace, perf tool can detect the multiple PID levels and
nsinfo__is_in_root_namespace() returns false, this patch reports error
for this case:
# unshare --fork --pid perf record -e cycles -a -- test_program
Couldn't synthesize bpf events.
Perf runs in non-root PID namespace but it tries to gather process info from its parent PID namespace.
Please mount the proc file system properly, e.g. add the option '--mount-proc' for unshare command.
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/r/20211224124014.2492751-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Move NULL pointer check before dereferencing the variable.
Addresses-Coverity: 1497622 ("Derereference before null check")
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Ameer Hamza <amhamza.mgc@gmail.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Cc: German Gomez <german.gomez@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Riccardo Mancini <rickyman7@gmail.com>
Link: https://lore.kernel.org/r/20220125121141.18347-1-amhamza.mgc@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The stderr should be set to a pipe when using TUI. Otherwise it'd
print to stdout and break TUI windows with an error message.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20220202070828.143303-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This updates branch sample type with missing PERF_SAMPLE_BRANCH_TYPE_SAVE.
Suggested-by: James Clark <james.clark@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lore.kernel.org/lkml/1643799443-15109-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To pick the changes in:
f6c6804c43 ("kvm: Move KVM_GET_XSAVE2 IOCTL definition at the end of kvm.h")
That just rebuilds perf, as these patches don't add any new KVM ioctl to
be harvested for the the 'perf trace' ioctl syscall argument
beautifiers.
This is also by now used by tools/testing/selftests/kvm/, a simple test
build succeeded.
This silences this perf build warning:
Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h'
diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Link: http://lore.kernel.org/lkml/Yf+4k5Fs5Q3HdSG9@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To check if more kernel API sync is needed and also to see if the perf
build tests continue to pass.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'for-linus-5.17a-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- documentation fixes related to Xen
- enable x2apic mode when available when running as hardware
virtualized guest under Xen
- cleanup and fix a corner case of vcpu enumeration when running a
paravirtualized Xen guest
* tag 'for-linus-5.17a-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/Xen: streamline (and fix) PV CPU enumeration
xen: update missing ioctl magic numers documentation
Improve docs for IOCTL_GNTDEV_MAP_GRANT_REF
xen: xenbus_dev.h: delete incorrect file name
xen/x2apic: enable x2apic mode when supported for HVM
* A couple of fixes when handling an exception while a SError has been delivered
* Workaround for Cortex-A510's single-step erratum
RISCV:
* Make CY, TM, and IR counters accessible in VU mode
* Fix SBI implementation version
x86:
* Report deprecation of x87 features in supported CPUID
* Preparation for fixing an interrupt delivery race on AMD hardware
* Sparse fix
All except POWER and s390:
* Rework guest entry code to correctly mark noinstr areas and fix vtime'
accounting (for x86, this was already mostly correct but not entirely;
for ARM, MIPS and RISC-V it wasn't)
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"ARM:
- A couple of fixes when handling an exception while a SError has
been delivered
- Workaround for Cortex-A510's single-step erratum
RISC-V:
- Make CY, TM, and IR counters accessible in VU mode
- Fix SBI implementation version
x86:
- Report deprecation of x87 features in supported CPUID
- Preparation for fixing an interrupt delivery race on AMD hardware
- Sparse fix
All except POWER and s390:
- Rework guest entry code to correctly mark noinstr areas and fix
vtime' accounting (for x86, this was already mostly correct but not
entirely; for ARM, MIPS and RISC-V it wasn't)"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: x86: Use ERR_PTR_USR() to return -EFAULT as a __user pointer
KVM: x86: Report deprecated x87 features in supported CPUID
KVM: arm64: Workaround Cortex-A510's single-step and PAC trap errata
KVM: arm64: Stop handle_exit() from handling HVC twice when an SError occurs
KVM: arm64: Avoid consuming a stale esr value when SError occur
RISC-V: KVM: Fix SBI implementation version
RISC-V: KVM: make CY, TM, and IR counters accessible in VU mode
kvm/riscv: rework guest entry logic
kvm/arm64: rework guest entry logic
kvm/x86: rework guest entry logic
kvm/mips: rework guest entry logic
kvm: add guest_state_{enter,exit}_irqoff()
KVM: x86: Move delivery of non-APICv interrupt into vendor code
kvm: Move KVM_GET_XSAVE2 IOCTL definition at the end of kvm.h
- Fix fallocate so that it drops all file privileges when files are
modified instead of open-coding that incompletely.
- Fix fallocate to flush the log if the caller wanted synchronous file
updates.
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Merge tag 'xfs-5.17-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"I was auditing operations in XFS that clear file privileges, and
realized that XFS' fallocate implementation drops suid/sgid but
doesn't clear file capabilities the same way that file writes and
reflink do.
There are VFS helpers that do it correctly, so refactor XFS to use
them. I also noticed that we weren't flushing the log at the correct
point in the fallocate operation, so that's fixed too.
Summary:
- Fix fallocate so that it drops all file privileges when files are
modified instead of open-coding that incompletely.
- Fix fallocate to flush the log if the caller wanted synchronous
file updates"
* tag 'xfs-5.17-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: ensure log flush at the end of a synchronous fallocate call
xfs: move xfs_update_prealloc_flags() to xfs_pnfs.c
xfs: set prealloc flag in xfs_alloc_file_space()
xfs: fallocate() should call file_modified()
xfs: remove XFS_PREALLOC_SYNC
xfs: reject crazy array sizes being fed to XFS_IOC_GETBMAP*
- Fix a bug where callers of ->sync_fs (e.g. sync_filesystem and
syncfs(2)) ignore the return value.
- Fix a bug where callers of sync_filesystem (e.g. fs freeze) ignore
the return value.
- Fix a bug in XFS where xfs_fs_sync_fs never passed back error
returns.
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Merge tag 'vfs-5.17-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull vfs fixes from Darrick Wong:
"I was auditing the sync_fs code paths recently and noticed that most
callers of ->sync_fs ignore its return value (and many implementations
never return nonzero even if the fs is broken!), which means that
internal fs errors and corruption are not passed up to userspace
callers of syncfs(2) or FIFREEZE. Hence fixing the common code and
XFS, and I'll start working on the ext4/btrfs folks if this is merged.
Summary:
- Fix a bug where callers of ->sync_fs (e.g. sync_filesystem and
syncfs(2)) ignore the return value.
- Fix a bug where callers of sync_filesystem (e.g. fs freeze) ignore
the return value.
- Fix a bug in XFS where xfs_fs_sync_fs never passed back error
returns"
* tag 'vfs-5.17-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: return errors in xfs_fs_sync_fs
quota: make dquot_quota_sync return errors from ->sync_fs
vfs: make sync_filesystem return errors from ->sync_fs
vfs: make freeze_super abort when sync_filesystem returns error
- Limit the length of ioend chains in writeback so that we don't trip
the softlockup watchdog and to limit long tail latency on clearing
PageWriteback.
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Merge tag 'iomap-5.17-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap fix from Darrick Wong:
"A single bugfix for iomap.
The fix should eliminate occasional complaints about stall warnings
when a lot of writeback IO completes all at once and we have to then
go clearing status on a large number of folios.
Summary:
- Limit the length of ioend chains in writeback so that we don't trip
the softlockup watchdog and to limit long tail latency on clearing
PageWriteback"
* tag 'iomap-5.17-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs, iomap: limit individual ioend chain lengths in writeback
- A couple of fixes when handling an exception while a SError has been
delivered
- Workaround for Cortex-A510's single-step[ erratum
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Merge tag 'kvmarm-fixes-5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 5.17, take #2
- A couple of fixes when handling an exception while a SError has been
delivered
- Workaround for Cortex-A510's single-step[ erratum
Some medium sized bugs in the various drivers. A couple are more recent
regressions:
- Fix two panics in hfi1 and two allocation problems
- Send the IGMP to the correct address in cma
- Squash a syzkaller bug related to races reading the multicast list
- Memory leak in siw and cm
- Fix a corner case spec compliance for HFI/QIB
- Correct the implementation of fences in siw
- Error unwind bug in mlx4
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Some medium sized bugs in the various drivers. A couple are more
recent regressions:
- Fix two panics in hfi1 and two allocation problems
- Send the IGMP to the correct address in cma
- Squash a syzkaller bug related to races reading the multicast list
- Memory leak in siw and cm
- Fix a corner case spec compliance for HFI/QIB
- Correct the implementation of fences in siw
- Error unwind bug in mlx4"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/mlx4: Don't continue event handler after memory allocation failure
RDMA/siw: Fix broken RDMA Read Fence/Resume logic.
IB/rdmavt: Validate remote_addr during loopback atomic tests
IB/cm: Release previously acquired reference counter in the cm_id_priv
RDMA/siw: Fix refcounting leak in siw_create_qp()
RDMA/ucma: Protect mc during concurrent multicast leaves
RDMA/cma: Use correct address when leaving multicast group
IB/hfi1: Fix tstats alloc and dealloc
IB/hfi1: Fix AIP early init panic
IB/hfi1: Fix alloc failure with larger txqueuelen
IB/hfi1: Fix panic with larger ipoib send_queue_size
Seven fixes, six of which are fairly obvious driver fixes. The one
core change to the device budget depth is to try to ensure that if the
default depth is large (which can produce quite a sizeable bitmap
allocation per device), we give back the memory we don't need if
there's a queue size reduction in slave_configure (which happens to a
lot of devices).
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:
"Seven fixes, six of which are fairly obvious driver fixes.
The one core change to the device budget depth is to try to ensure
that if the default depth is large (which can produce quite a sizeable
bitmap allocation per device), we give back the memory we don't need
if there's a queue size reduction in slave_configure (which happens to
a lot of devices)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: hisi_sas: Fix setting of hisi_sas_slot.is_internal
scsi: pm8001: Fix use-after-free for aborted SSP/STP sas_task
scsi: pm8001: Fix use-after-free for aborted TMF sas_task
scsi: pm8001: Fix warning for undescribed param in process_one_iomb()
scsi: core: Reallocate device's budget map on queue depth change
scsi: bnx2fc: Make bnx2fc_recv_frame() mp safe
scsi: pm80xx: Fix double completion for SATA devices
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Merge tag 'pci-v5.17-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull pci fixes from Bjorn Helgaas:
- Restructure j721e_pcie_probe() so we don't dereference a NULL pointer
(Bjorn Helgaas)
- Add a kirin_pcie_data struct to identify different Kirin variants to
fix probe failure for controllers with an internal PHY (Bjorn
Helgaas)
* tag 'pci-v5.17-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: kirin: Add dev struct for of_device_get_match_data()
PCI: j721e: Initialize pcie->cdns_pcie before using it
Bean reported that a622435fbe ("PCI: kirin: Prefer
of_device_get_match_data()") broke kirin_pcie_probe() because it assumed
match data of 0 was a failure when in fact, it meant the match data was
"(void *)PCIE_KIRIN_INTERNAL_PHY".
Therefore, probing of "hisilicon,kirin960-pcie" devices failed with -EINVAL
and an "OF data missing" message.
Add a struct kirin_pcie_data to encode the PHY type. Then the result of
of_device_get_match_data() should always be a non-NULL pointer to a struct
kirin_pcie_data that contains the PHY type.
Fixes: a622435fbe ("PCI: kirin: Prefer of_device_get_match_data()")
Link: https://lore.kernel.org/r/20220202162659.GA12603@bhelgaas
Link: https://lore.kernel.org/r/20220201215941.1203155-1-huobean@gmail.com
Reported-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Merge tag 'for-5.17-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"A few fixes and error handling improvements:
- fix deadlock between quota disable and qgroup rescan worker
- fix use-after-free after failure to create a snapshot
- skip warning on unmount after log cleanup failure
- don't start transaction for scrub if the fs is mounted read-only
- tree checker verifies item sizes"
* tag 'for-5.17-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: skip reserved bytes warning on unmount after log cleanup failure
btrfs: fix use of uninitialized variable at rm device ioctl
btrfs: fix use-after-free after failure to create a snapshot
btrfs: tree-checker: check item_size for dev_item
btrfs: tree-checker: check item_size for inode_item
btrfs: fix deadlock between quota disable and qgroup rescan worker
btrfs: don't start transaction for scrub if the fs is mounted read-only
- fix fsdax partition offset misbehavior;
- clean up z_erofs_decompressqueue_work() declaration;
- fix up EOF lcluster inlining, especially for small compressed data.
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Merge tag 'erofs-for-5.17-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fixes from Gao Xiang:
"Two fixes related to fsdax cleanup in this cycle and ztailpacking to
fix small compressed data inlining. There is also a trivial cleanup to
rearrange code for better reading.
Summary:
- fix fsdax partition offset misbehavior
- clean up z_erofs_decompressqueue_work() declaration
- fix up EOF lcluster inlining, especially for small compressed data"
* tag 'erofs-for-5.17-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: fix small compressed files inlining
erofs: avoid unnecessary z_erofs_decompressqueue_work() declaration
erofs: fix fsdax partition offset handling
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Merge tag 'block-5.17-2022-02-04' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request
- fix use-after-free in rdma and tcp controller reset (Sagi Grimberg)
- fix the state check in nvmf_ctlr_matches_baseopts (Uday Shankar)
- MD nowait null pointer fix (Song)
- blk-integrity seed advance fix (Martin)
- Fix a dio regression in this merge window (Ilya)
* tag 'block-5.17-2022-02-04' of git://git.kernel.dk/linux-block:
block: bio-integrity: Advance seed correctly for larger interval sizes
nvme-fabrics: fix state check in nvmf_ctlr_matches_baseopts()
md: fix NULL pointer deref with nowait but no mddev->queue
block: fix DIO handling regressions in blkdev_read_iter()
nvme-rdma: fix possible use-after-free in transport error_recovery work
nvme-tcp: fix possible use-after-free in transport error_recovery work
nvme: fix a possible use-after-free in controller reset during load
* Sergey volunteered to be a reviewer for the Renesas R-Car SATA
driver and PATA drivers. Update the MAINTAINERS file accordingly.
* Regression fix: add a horkage flag to prevent accessing the log
directory log page with SATADOM-ML 3ME SATA devices as they react
badly to reading that log page (from Anton).
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Merge tag 'ata-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ATA fixes from Damien Le Moal:
- Sergey volunteered to be a reviewer for the Renesas R-Car SATA driver
and PATA drivers. Update the MAINTAINERS file accordingly.
- Regression fix: add a horkage flag to prevent accessing the log
directory log page with SATADOM-ML 3ME SATA devices as they react
badly to reading that log page (from Anton).
* tag 'ata-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: libata-core: Introduce ATA_HORKAGE_NO_LOG_DIR horkage
MAINTAINERS: add myself as Renesas R-Car SATA driver reviewer
MAINTAINERS: add myself as PATA drivers reviewer
Including:
- Warning fixes and a fix for a potential use-after-free in
IOMMU core code
- Another potential memory leak fix for the Intel VT-d driver
- Fix for an IO polling loop timeout issue in the AMD IOMMU
driver
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Merge tag 'iommu-fixes-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Warning fixes and a fix for a potential use-after-free in IOMMU core
code
- Another potential memory leak fix for the Intel VT-d driver
- Fix for an IO polling loop timeout issue in the AMD IOMMU driver
* tag 'iommu-fixes-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/amd: Fix loop timeout issue in iommu_ga_log_enable()
iommu/vt-d: Fix potential memory leak in intel_setup_irq_remapping()
iommu: Fix some W=1 warnings
iommu: Fix potential use-after-free during probe
Pull random number generator fixes from Jason Donenfeld:
"For this week, we have:
- A fix to make more frequent use of hwgenerator randomness, from
Dominik.
- More cleanups to the boot initialization sequence, from Dominik.
- A fix for an old shortcoming with the ZAP ioctl, from me.
- A workaround for a still unfixed Clang CFI/FullLTO compiler bug,
from me. On one hand, it's a bummer to commit workarounds for
experimental compiler features that have bugs. But on the other, I
think this actually improves the code somewhat, independent of the
bug. So a win-win"
* tag 'random-5.17-rc3-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
random: only call crng_finalize_init() for primary_crng
random: access primary_pool directly rather than through pointer
random: wake up /dev/random writers after zap
random: continually use hwgenerator randomness
lib/crypto: blake2s: avoid indirect calls to compression function for Clang CFI
Fix compilation in the case when ACPI is selected and CRC32, depended
on by ACPI after recent changes, is not (Randy Dunlap).
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Merge tag 'acpi-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix compilation in the case when ACPI is selected and CRC32, depended
on by ACPI after recent changes, is not (Randy Dunlap)"
* tag 'acpi-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: require CRC32 to build
A collection of small fixes. The major changes are ASoC core fixes,
addressing the DPCM locking issue after the recent code changes and
the potentially invalid register accesses via control API. Also,
HD-audio got a core fix for Oops at dynamic unbinding.
The rest are device-specific small fixes, including the usual stuff
like HD-audio and USB-audio quirks.
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Merge tag 'sound-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of small fixes.
The major changes are ASoC core fixes, addressing the DPCM locking
issue after the recent code changes and the potentially invalid
register accesses via control API. Also, HD-audio got a core fix for
Oops at dynamic unbinding.
The rest are device-specific small fixes, including the usual stuff
like HD-audio and USB-audio quirks"
* tag 'sound-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (31 commits)
ALSA: hda: Skip codec shutdown in case the codec is not registered
ALSA: usb-audio: Correct quirk for VF0770
ALSA: Replace acpi_bus_get_device()
Input: wm97xx: Simplify resource management
ALSA: hda/realtek: Add quirk for ASUS GU603
ALSA: hda/realtek: Fix silent output on Gigabyte X570 Aorus Xtreme after reboot from Windows
ALSA: hda/realtek: Fix silent output on Gigabyte X570S Aorus Master (newer chipset)
ALSA: hda/realtek: Add missing fixup-model entry for Gigabyte X570 ALC1220 quirks
ALSA: hda: realtek: Fix race at concurrent COEF updates
ASoC: ops: Check for negative values before reading them
ASoC: rt5682: Fix deadlock on resume
ASoC: hdmi-codec: Fix OOB memory accesses
ASoC: soc-pcm: Move debugfs removal out of spinlock
ASoC: soc-pcm: Fix DPCM lockdep warning due to nested stream locks
ASoC: fsl: Add missing error handling in pcm030_fabric_probe
ALSA: hda: Fix signedness of sscanf() arguments
ALSA: usb-audio: initialize variables that could ignore errors
ALSA: hda: Fix UAF of leds class devs at unbinding
ASoC: qdsp6: q6apm-dai: only stop graphs that are started
ASoC: codecs: wcd938x: fix return value of mixer put function
...
fbdev:
- readd fbcon acceleration
i915:
- fix DP monitor via type-c dock
- fix for engine busyness and read timeout with GuC
- use ALLOW_FAIL for error capture buffer allocs
- don't use interruptible lock on error paths
- smatch fix to reject zero sized overlays.
amdgpu:
- mGPU fan boost fix for beige goby
- S0ix fixes
- Cyan skillfish hang fix
- DCN fixes for DCN 3.1
- DCN fixes for DCN 3.01
- Apple retina panel fix
- ttm logic inversion fix
dma-buf:
- heaps: fix potential spectre v1 gadget
kmb:
- fix potential oob access
mxsfb:
- fix NULL ptr deref
nouveau:
- fix potential oob access during BIOS decode
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Merge tag 'drm-fixes-2022-02-04' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Regular fixes for the week. Daniel has agreed to bring back the fbcon
hw acceleration under a CONFIG option for the non-drm fbdev users, we
don't advise turning this on unless you are in the niche that is old
fbdev drivers, Since it's essentially a revert and shouldn't be high
impact seemed like a good time to do it now.
Otherwise, i915 and amdgpu fixes are most of it, along with some minor
fixes elsewhere.
fbdev:
- readd fbcon acceleration
i915:
- fix DP monitor via type-c dock
- fix for engine busyness and read timeout with GuC
- use ALLOW_FAIL for error capture buffer allocs
- don't use interruptible lock on error paths
- smatch fix to reject zero sized overlays.
amdgpu:
- mGPU fan boost fix for beige goby
- S0ix fixes
- Cyan skillfish hang fix
- DCN fixes for DCN 3.1
- DCN fixes for DCN 3.01
- Apple retina panel fix
- ttm logic inversion fix
dma-buf:
- heaps: fix potential spectre v1 gadget
kmb:
- fix potential oob access
mxsfb:
- fix NULL ptr deref
nouveau:
- fix potential oob access during BIOS decode"
* tag 'drm-fixes-2022-02-04' of git://anongit.freedesktop.org/drm/drm: (24 commits)
drm: mxsfb: Fix NULL pointer dereference
drm/amdgpu: fix logic inversion in check
drm/amd: avoid suspend on dGPUs w/ s2idle support when runtime PM enabled
drm/amd/display: Force link_rate as LINK_RATE_RBR2 for 2018 15" Apple Retina panels
drm/amd/display: revert "Reset fifo after enable otg"
drm/amd/display: watermark latencies is not enough on DCN31
drm/amd/display: Update watermark values for DCN301
drm/amdgpu: fix a potential GPU hang on cyan skillfish
drm/amd: Only run s3 or s0ix if system is configured properly
drm/amd: add support to check whether the system is set to s3
fbcon: Add option to enable legacy hardware acceleration
Revert "fbcon: Disable accelerated scrolling"
Revert "fbdev: Garbage collect fbdev scrolling acceleration, part 1 (from TODO list)"
drm/i915/pmu: Fix KMD and GuC race on accessing busyness
dma-buf: heaps: Fix potential spectre v1 gadget
drm/amd: Warn users about potential s0ix problems
drm/amd/pm: correct the MGpuFanBoost support for Beige Goby
drm/nouveau: fix off by one in BIOS boundary checking
drm/i915/adlp: Fix TypeC PHY-ready status readout
drm/i915/pmu: Use PM timestamp instead of RING TIMESTAMP for reference
...
Merge misc fixes from Andrew Morton:
"10 patches.
Subsystems affected by this patch series: ipc, MAINTAINERS, and mm
(vmscan, debug, pagemap, kmemleak, and selftests)"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
kselftest/vm: revert "tools/testing/selftests/vm/userfaultfd.c: use swap() to make code cleaner"
MAINTAINERS: update rppt's email
mm/kmemleak: avoid scanning potential huge holes
ipc/sem: do not sleep with a spin lock held
mm/pgtable: define pte_index so that preprocessor could recognize it
mm/page_table_check: check entries at pmd levels
mm/khugepaged: unify collapse pmd clear, flush and free
mm/page_table_check: use unsigned long for page counters and cleanup
mm/debug_vm_pgtable: remove pte entry from the page table
Revert "mm/page_isolation: unset migratetype directly for non Buddy page"
crng_finalize_init() returns instantly if it is called for another pool
than primary_crng. The test whether crng_finalize_init() is still required
can be moved to the relevant caller in crng_reseed(), and
crng_need_final_init can be reset to false if crng_finalize_init() is
called with workqueues ready. Then, no previous callsite will call
crng_finalize_init() unless it is needed, and we can get rid of the
superfluous function parameter.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Both crng_initialize_primary() and crng_init_try_arch_early() are
only called for the primary_pool. Accessing it directly instead of
through a function parameter simplifies the code.
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
When account() is called, and the amount of entropy dips below
random_write_wakeup_bits, we wake up the random writers, so that they
can write some more in. However, the RNDZAPENTCNT/RNDCLEARPOOL ioctl
sets the entropy count to zero -- a potential reduction just like
account() -- but does not unblock writers. This commit adds the missing
logic to that ioctl to unblock waiting writers.
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
The rngd kernel thread may sleep indefinitely if the entropy count is
kept above random_write_wakeup_bits by other entropy sources. To make
best use of multiple sources of randomness, mix entropy from hardware
RNGs into the pool at least once within CRNG_RESEED_INTERVAL.
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
blake2s_compress_generic is weakly aliased by blake2s_compress. The
current harness for function selection uses a function pointer, which is
ordinarily inlined and resolved at compile time. But when Clang's CFI is
enabled, CFI still triggers when making an indirect call via a weak
symbol. This seems like a bug in Clang's CFI, as though it's bucketing
weak symbols and strong symbols differently. It also only seems to
trigger when "full LTO" mode is used, rather than "thin LTO".
[ 0.000000][ T0] Kernel panic - not syncing: CFI failure (target: blake2s_compress_generic+0x0/0x1444)
[ 0.000000][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.16.0-mainline-06981-g076c855b846e #1
[ 0.000000][ T0] Hardware name: MT6873 (DT)
[ 0.000000][ T0] Call trace:
[ 0.000000][ T0] dump_backtrace+0xfc/0x1dc
[ 0.000000][ T0] dump_stack_lvl+0xa8/0x11c
[ 0.000000][ T0] panic+0x194/0x464
[ 0.000000][ T0] __cfi_check_fail+0x54/0x58
[ 0.000000][ T0] __cfi_slowpath_diag+0x354/0x4b0
[ 0.000000][ T0] blake2s_update+0x14c/0x178
[ 0.000000][ T0] _extract_entropy+0xf4/0x29c
[ 0.000000][ T0] crng_initialize_primary+0x24/0x94
[ 0.000000][ T0] rand_initialize+0x2c/0x6c
[ 0.000000][ T0] start_kernel+0x2f8/0x65c
[ 0.000000][ T0] __primary_switched+0xc4/0x7be4
[ 0.000000][ T0] Rebooting in 5 seconds..
Nonetheless, the function pointer method isn't so terrific anyway, so
this patch replaces it with a simple boolean, which also gets inlined
away. This successfully works around the Clang bug.
In general, I'm not too keen on all of the indirection involved here; it
clearly does more harm than good. Hopefully the whole thing can get
cleaned up down the road when lib/crypto is overhauled more
comprehensively. But for now, we go with a simple bandaid.
Fixes: 6048fdcc5f ("lib/crypto: blake2s: include as built-in")
Link: https://github.com/ClangBuiltLinux/linux/issues/1567
Reported-by: Miles Chen <miles.chen@mediatek.com>
Tested-by: Miles Chen <miles.chen@mediatek.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Acked-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
to avoid checksum or authentication tag mismatches and ensuing session
resets in case the destination buffer isn't guaranteed to be stable.
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Merge tag 'ceph-for-5.17-rc3' of git://github.com/ceph/ceph-client
Pull ceph fixes from Ilya Dryomov:
"A patch to make it possible to disable zero copy path in the messenger
to avoid checksum or authentication tag mismatches and ensuing session
resets in case the destination buffer isn't guaranteed to be stable"
* tag 'ceph-for-5.17-rc3' of git://github.com/ceph/ceph-client:
libceph: optionally use bounce buffer on recv path in crc mode
libceph: make recv path in secure mode work the same as send path
the 9p 'walk' operation requires fid arguments to not originate from
an open or create call and we've missed that for a while as the
servers regularly running tests with don't enforce the check and
no active reviewer knew about the rule.
Both reporters confirmed reverting this patch fixes things for them
and looking at it further wasn't actually required...
Will take more time for follow up and enforcing the rule more
thoroughly later.
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Merge tag '9p-for-5.17-rc3' of git://github.com/martinetd/linux
Pull 9p fix from Dominique Martinet:
"Fix 'cannot walk open fid' rule
The 9p 'walk' operation requires fid arguments to not originate from
an open or create call and we've missed that for a while as the
servers regularly running tests with don't enforce the check and no
active reviewer knew about the rule.
Both reporters confirmed reverting this patch fixes things for them
and looking at it further wasn't actually required... Will take more
time for follow up and enforcing the rule more thoroughly later"
* tag '9p-for-5.17-rc3' of git://github.com/martinetd/linux:
Revert "fs/9p: search open fids first"
