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Link: https://lkml.kernel.org/r/20220804202207.439427-1-gpiccoli@igalia.com
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
When a disk is removed, bdi_unregister gets called to stop further
writeback and wait for associated delayed work to complete. However,
wb_inode_writeback_end() may schedule bandwidth estimation dwork after
this has completed, which can result in the timer attempting to access the
just freed bdi_writeback.
Fix this by checking if the bdi_writeback is alive, similar to when
scheduling writeback work.
Since this requires wb->work_lock, and wb_inode_writeback_end() may get
called from interrupt, switch wb->work_lock to an irqsafe lock.
Link: https://lkml.kernel.org/r/20220801155034.3772543-1-khazhy@google.com
Fixes: 45a2966fd6 ("writeback: fix bandwidth estimate for spiky workload")
Signed-off-by: Khazhismel Kumykov <khazhy@google.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Michael Stapelberg <stapelberg+linux@google.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
If we allocate a new page, we need to make sure that our folio matches
that new page.
If we do end up in this code path, we store the wrong page in the shmem
inode's page cache, and I would rather imagine that data corruption
ensues.
This will be solved by changing shmem_replace_page() to
shmem_replace_folio(), but this is the minimal fix.
Link: https://lkml.kernel.org/r/20220730042518.1264767-1-willy@infradead.org
Fixes: da08e9b793 ("mm/shmem: convert shmem_swapin_page() to shmem_swapin_folio()")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
In MCOPY_ATOMIC_CONTINUE case with a non-shared VMA, pages in the page
cache are installed in the ptes. But hugepage_add_new_anon_rmap is called
for them mistakenly because they're not vm_shared. This will corrupt the
page->mapping used by page cache code.
Link: https://lkml.kernel.org/r/20220712130542.18836-1-linmiaohe@huawei.com
Fixes: f619147104 ("userfaultfd: add UFFDIO_CONTINUE ioctl")
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Merge tag 'for-6.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Fixes:
- check that subvolume is writable when changing xattrs from security
namespace
- fix memory leak in device lookup helper
- update generation of hole file extent item when merging holes
- fix space cache corruption and potential double allocations; this
is a rare bug but can be serious once it happens, stable backports
and analysis tool will be provided
- fix error handling when deleting root references
- fix crash due to assert when attempting to cancel suspended device
replace, add message what to do if mount fails due to missing
replace item
Regressions:
- don't merge pages into bio if their page offset is not contiguous
- don't allow large NOWAIT direct reads, this could lead to short
reads eg. in io_uring"
* tag 'for-6.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: add info when mount fails due to stale replace target
btrfs: replace: drop assert for suspended replace
btrfs: fix silent failure when deleting root reference
btrfs: fix space cache corruption and potential double allocations
btrfs: don't allow large NOWAIT direct reads
btrfs: don't merge pages into bio if their page offset is not contiguous
btrfs: update generation of hole file extent item when merging holes
btrfs: fix possible memory leak in btrfs_get_dev_args_from_path()
btrfs: check if root is readonly while setting security xattr
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Merge tag '6.0-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cfis fixes from Steve French:
- two locking fixes (zero range, punch hole)
- DFS 9 fix (padding), affecting some servers
- three minor cleanup changes
* tag '6.0-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: Add helper function to check smb1+ server
cifs: Use help macro to get the mid header size
cifs: Use help macro to get the header preamble size
cifs: skip extra NULL byte in filenames
smb3: missing inode locks in punch hole
smb3: missing inode locks in zero range
- Fix PAT on Xen, which caused i915 driver failures
- Fix compat INT 80 entry crash on Xen PV guests
- Fix 'MMIO Stale Data' mitigation status reporting on older Intel CPUs
- Fix RSB stuffing regressions
- Fix ORC unwinding on ftrace trampolines
- Add Intel Raptor Lake CPU model number
- Fix (work around) a SEV-SNP bootloader bug providing bogus values in
boot_params->cc_blob_address, by ignoring the value on !SEV-SNP bootups.
- Fix SEV-SNP early boot failure
- Fix the objtool list of noreturn functions and annotate snp_abort(),
which bug confused objtool on gcc-12.
- Fix the documentation for retbleed
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'x86-urgent-2022-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 fixes from Ingo Molnar:
- Fix PAT on Xen, which caused i915 driver failures
- Fix compat INT 80 entry crash on Xen PV guests
- Fix 'MMIO Stale Data' mitigation status reporting on older Intel CPUs
- Fix RSB stuffing regressions
- Fix ORC unwinding on ftrace trampolines
- Add Intel Raptor Lake CPU model number
- Fix (work around) a SEV-SNP bootloader bug providing bogus values in
boot_params->cc_blob_address, by ignoring the value on !SEV-SNP
bootups.
- Fix SEV-SNP early boot failure
- Fix the objtool list of noreturn functions and annotate snp_abort(),
which bug confused objtool on gcc-12.
- Fix the documentation for retbleed
* tag 'x86-urgent-2022-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Documentation/ABI: Mention retbleed vulnerability info file for sysfs
x86/sev: Mark snp_abort() noreturn
x86/sev: Don't use cc_platform_has() for early SEV-SNP calls
x86/boot: Don't propagate uninitialized boot_params->cc_blob_address
x86/cpu: Add new Raptor Lake CPU model number
x86/unwind/orc: Unwind ftrace trampolines with correct ORC entry
x86/nospec: Fix i386 RSB stuffing
x86/nospec: Unwreck the RSB stuffing
x86/bugs: Add "unknown" reporting for MMIO Stale Data
x86/entry: Fix entry_INT80_compat for Xen PV guests
x86/PAT: Have pat_enabled() properly reflect state when running on Xen
PEBS constraints fix on Alder Lake CPUs and an Intel uncore PMU fix.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'perf-urgent-2022-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 perf fixes from Ingo Molnar:
"Misc fixes: an Arch-LBR fix, a PEBS enumeration fix, an Intel DS fix,
PEBS constraints fix on Alder Lake CPUs and an Intel uncore PMU fix"
* tag 'perf-urgent-2022-08-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Fix broken read_counter() for SNB IMC PMU
perf/x86/intel: Fix pebs event constraints for ADL
perf/x86/intel/ds: Fix precise store latency handling
perf/x86/core: Set pebs_capable and PMU_FL_PEBS_ALL for the Baseline
perf/x86/lbr: Enable the branch type for the Arch LBR by default
- Fixup setup of weak groups when using 'perf stat --repeat', add a
'perf test' for it.
- Fix memory leaks in 'perf sched record' detected with -fsanitize=address.
- Fix build when PYTHON_CONFIG is user supplied.
- Capitalize topdown metrics' names in 'perf stat', so that the output,
sometimes parsed, matches the Intel SDM docs.
- Make sure the documentation for the save_type filter about Intel
systems with Arch LBR support (12th-Gen+ client or 4th-Gen Xeon+
server) reflects recent related kernel changes.
- Fix 'perf record' man page formatting of description of support to hybrid systems.
- Update arm64´s KVM header from the kernel sources.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-tools-fixes-for-v6.0-2022-08-27' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Fixup setup of weak groups when using 'perf stat --repeat', add a
'perf test' for it.
- Fix memory leaks in 'perf sched record' detected with
-fsanitize=address.
- Fix build when PYTHON_CONFIG is user supplied.
- Capitalize topdown metrics' names in 'perf stat', so that the output,
sometimes parsed, matches the Intel SDM docs.
- Make sure the documentation for the save_type filter about Intel
systems with Arch LBR support (12th-Gen+ client or 4th-Gen Xeon+
server) reflects recent related kernel changes.
- Fix 'perf record' man page formatting of description of support to
hybrid systems.
- Update arm64´s KVM header from the kernel sources.
* tag 'perf-tools-fixes-for-v6.0-2022-08-27' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf stat: Capitalize topdown metrics' names
perf docs: Update the documentation for the save_type filter
perf sched: Fix memory leaks in __cmd_record detected with -fsanitize=address
perf record: Fix manpage formatting of description of support to hybrid systems
perf test: Stat test for repeat with a weak group
perf stat: Clear evsel->reset_group for each stat run
tools kvm headers arm64: Update KVM header from the kernel sources
perf python: Fix build when PYTHON_CONFIG is user supplied
- Add missing EXPORT_SYMBOL_GPL in the thermal core and add back the
required 'trips' property to the thermal zone DT bindings (Daniel
Lezcano).
- Prevent the int340x_thermal driver from crashing when a package
with a buffer of 0 length is returned by an ACPI control method
evaluated by it (Lee, Chun-Yi).
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Merge tag 'thermal-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull thermal control fixes from Rafael Wysocki:
"Fix two issues introduced recently and one driver problem leading to a
NULL pointer dereference in some cases.
Specifics:
- Add missing EXPORT_SYMBOL_GPL in the thermal core and add back the
required 'trips' property to the thermal zone DT bindings (Daniel
Lezcano)
- Prevent the int340x_thermal driver from crashing when a package
with a buffer of 0 length is returned by an ACPI control method
evaluated by it (Lee, Chun-Yi)"
* tag 'thermal-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thermal/int340x_thermal: handle data_vault when the value is ZERO_SIZE_PTR
dt-bindings: thermal: Fix missing required property
thermal/core: Add missing EXPORT_SYMBOL_GPL
Make __resolve_freq() check the presence of the frequency table
instead of checking whether or not the ->target_index() callback
is implemented by the driver, because that need not be the case when
__resolve_freq() is used (Lukasz Luba).
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Merge tag 'pm-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Make __resolve_freq() check the presence of the frequency table
instead of checking whether or not the ->target_index() callback is
implemented by the driver, because that need not be the case when
__resolve_freq() is used (Lukasz Luba)"
* tag 'pm-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: check only freq_table in __resolve_freq()
- Prevent acpi_thermal_cpufreq_exit() from attempting to remove
the same frequency QoS request for multiple times (Riwen Lu).
- Fix type detection for integer ACPI device properties (Stefan
Binding).
- Avoid emitting false-positive warnings when processing ACPI
device properties and drop the useless default case from the
acpi_copy_property_array_uint() macro (Sakari Ailus).
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Merge tag 'acpi-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix issues introduced by recent changes related to the handling
of ACPI device properties and a coding mistake in the exit path of the
ACPI processor driver.
Specifics:
- Prevent acpi_thermal_cpufreq_exit() from attempting to remove
the same frequency QoS request multiple times (Riwen Lu)
- Fix type detection for integer ACPI device properties (Stefan
Binding)
- Avoid emitting false-positive warnings when processing ACPI
device properties and drop the useless default case from the
acpi_copy_property_array_uint() macro (Sakari Ailus)"
* tag 'acpi-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: property: Remove default association from integer maximum values
ACPI: property: Ignore already existing data node tags
ACPI: property: Fix type detection of unified integer reading functions
ACPI: processor: Remove freq Qos request for all CPUs
- Fix double free of guarded storage and runtime instrumentation control
blocks on fork() failure.
- Fix triggering write fault when VMA does not allow VM_WRITE.
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Merge tag 's390-6.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Vasily Gorbik:
- Fix double free of guarded storage and runtime instrumentation
control blocks on fork() failure
- Fix triggering write fault when VMA does not allow VM_WRITE
* tag 's390-6.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/mm: do not trigger write fault when vma does not allow VM_WRITE
s390: fix double free of GS and RI CBs on fork() failure
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Merge tag 'for-linus-6.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- two minor cleanups
- a fix of the xen/privcmd driver avoiding a possible NULL dereference
in an error case
* tag 'for-linus-6.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/privcmd: fix error exit of privcmd_ioctl_dm_op()
xen: move from strlcpy with unused retval to strscpy
xen: x86: remove setting the obsolete config XEN_MAX_DOMAIN_MEMORY
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Merge tag 'audit-pr-20220826' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit fix from Paul Moore:
"Another small audit patch, this time to fix a bug where the return
codes were not properly set before the audit filters were run,
potentially resulting in missed audit records"
* tag 'audit-pr-20220826' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: move audit_return_fixup before the filters
Major fixes:
- Revert the changes for fbcon console when vc_resize() fails [Shigeru Yoshida]
- Avoid a potential divide by zero error in fb_pm2fb [Letu Ren]
Minor fixes:
- Add missing pci_disable_device() in chipsfb_pci_init() [Yang Yingliang]
- Fix tests for platform_get_irq() failure in omapfb [Yu Zhe]
- Destroy mutex on freeing struct fb_info in fbsysfs [Shigeru Yoshida]
Cleanups:
- Move fbdev drivers from strlcpy to strscpy [Wolfram Sang]
- Indenting fixes, comment fixes, ... [Jiapeng Chong & Jilin Yuan]
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Merge tag 'fbdev-for-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes and updates from Helge Deller:
"Mostly just small patches, with the exception of the bigger indenting
cleanups in the sisfb and radeonfb drivers.
Two patches should be mentioned though: A fix-up for fbdev if the
screen resize fails (by Shigeru Yoshida), and a potential divide by
zero fix in fb_pm2fb (by Letu Ren).
Summary:
Major fixes:
- Revert the changes for fbcon console when vc_resize() fails
[Shigeru Yoshida]
- Avoid a potential divide by zero error in fb_pm2fb [Letu Ren]
Minor fixes:
- Add missing pci_disable_device() in chipsfb_pci_init() [Yang
Yingliang]
- Fix tests for platform_get_irq() failure in omapfb [Yu Zhe]
- Destroy mutex on freeing struct fb_info in fbsysfs [Shigeru
Yoshida]
Cleanups:
- Move fbdev drivers from strlcpy to strscpy [Wolfram Sang]
- Indenting fixes, comment fixes, ... [Jiapeng Chong & Jilin Yuan]"
* tag 'fbdev-for-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbdev: fbcon: Properly revert changes when vc_resize() failed
fbdev: Move fbdev drivers from strlcpy to strscpy
fbdev: omap: Remove unnecessary print function dev_err()
fbdev: chipsfb: Add missing pci_disable_device() in chipsfb_pci_init()
fbdev: fbcon: Destroy mutex on freeing struct fb_info
fbdev: radeon: Clean up some inconsistent indenting
fbdev: sisfb: Clean up some inconsistent indenting
fbdev: fb_pm2fb: Avoid potential divide by zero error
fbdev: ssd1307fb: Fix repeated words in comments
fbdev: omapfb: Fix tests for platform_get_irq() failure
Some architectures define their own arch_test_bit and they also need
arch_test_bit_acquire, otherwise they won't compile. We also clean up
the code by using the generic test_bit if that is equivalent to the
arch-specific version.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 8238b45798 ("wait_on_bit: add an acquire memory barrier")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Update the documentation to reflect the kernel changes.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220816125612.2042397-2-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
An array of strings is passed to cmd_record but not freed. As
cmd_record modifies the array, add another array as a copy that can be
mutated allowing the original array contents to all be freed.
Detected with -fsanitize=address.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220824145733.409005-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The Intel hybrid description is written in a different style than the
rest of the perf record man page. There were some new command line
options added after it which resulted in very strange section ordering.
Move the hybrid include last.
Also the sub sections in the hybrid document don't fit the record
manpage well (especially since it talks about all kinds of unrelated
commands). I left this for now, but would be better to separate this
properly in the different man pages.
It would be better to use sub sections for the other sections, but these
don't seem to be supported in AsciiDoc?
Some of the examples are still misrendered in the manpage with an
indented troff command, but I don't know how to fix that.
In any case it's now better than before.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: zhengjun.xing@intel.com
Link: https://lore.kernel.org/r/20220818100127.249401-1-ak@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Breaking a weak group requires multiple passes of an evlist, with
multiple runs this can introduce bugs ultimately leading to
segfaults. Add a test to cover this.
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220822213352.75721-2-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
If a weak group is broken then the reset_group flag remains set for
the next run. Having reset_group set means the counter isn't created
and ultimately a segfault.
A simple reproduction of this is:
# perf stat -r2 -e '{cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles,cycles}:W
which will be added as a test in the next patch.
Fixes: 4804e01116 ("perf stat: Use affinity for opening events")
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: Xing Zhengjun <zhengjun.xing@linux.intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: https://lore.kernel.org/r/20220822213352.75721-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
To pick the changes from:
ae3b1da954 ("KVM: arm64: Fix compile error due to sign extension")
That doesn't result in any changes in tooling (when built on x86), only
addresses this perf build warning:
Warning: Kernel ABI header at 'tools/arch/arm64/include/uapi/asm/kvm.h' differs from latest version at 'arch/arm64/include/uapi/asm/kvm.h'
diff -u tools/arch/arm64/include/uapi/asm/kvm.h arch/arm64/include/uapi/asm/kvm.h
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/all/YwOMCCc4E79FuvDe@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The previous change to Python autodetection had a small mistake where
the auto value was used to determine the Python binary, rather than the
user supplied value. The Python binary is only used for one part of the
build process, rather than the final linking, so it was producing
correct builds in most scenarios, especially when the auto detected
value matched what the user wanted, or the system only had a valid set
of Pythons.
Change it so that the Python binary path is derived from either the
PYTHON_CONFIG value or PYTHON value, depending on what is specified by
the user. This was the original intention.
This error was spotted in a build failure an odd cross compilation
environment after commit 4c41cb46a7 ("perf python: Prefer
python3") was merged.
Fixes: 630af16eee ("perf tools: Use Python devtools for version autodetection rather than runtime")
Signed-off-by: James Clark <james.clark@arm.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220728093946.1337642-1-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Existing code was generating bogus counts for the SNB IMC bandwidth counters:
$ perf stat -a -I 1000 -e uncore_imc/data_reads/,uncore_imc/data_writes/
1.000327813 1,024.03 MiB uncore_imc/data_reads/
1.000327813 20.73 MiB uncore_imc/data_writes/
2.000580153 261,120.00 MiB uncore_imc/data_reads/
2.000580153 23.28 MiB uncore_imc/data_writes/
The problem was introduced by commit:
07ce734dd8 ("perf/x86/intel/uncore: Clean up client IMC")
Where the read_counter callback was replace to point to the generic
uncore_mmio_read_counter() function.
The SNB IMC counters are freerunnig 32-bit counters laid out contiguously in
MMIO. But uncore_mmio_read_counter() is using a readq() call to read from
MMIO therefore reading 64-bit from MMIO. Although this is okay for the
uncore_perf_event_update() function because it is shifting the value based
on the actual counter width to compute a delta, it is not okay for the
uncore_pmu_event_start() which is simply reading the counter and therefore
priming the event->prev_count with a bogus value which is responsible for
causing bogus deltas in the perf stat command above.
The fix is to reintroduce the custom callback for read_counter for the SNB
IMC PMU and use readl() instead of readq(). With the change the output of
perf stat is back to normal:
$ perf stat -a -I 1000 -e uncore_imc/data_reads/,uncore_imc/data_writes/
1.000120987 296.94 MiB uncore_imc/data_reads/
1.000120987 138.42 MiB uncore_imc/data_writes/
2.000403144 175.91 MiB uncore_imc/data_reads/
2.000403144 68.50 MiB uncore_imc/data_writes/
Fixes: 07ce734dd8 ("perf/x86/intel/uncore: Clean up client IMC")
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lore.kernel.org/r/20220803160031.1379788-1-eranian@google.com
- Fix workaround for Cortex-A76 erratum #1286807
- Add workaround for AMU erratum #2457168 on Cortex-A510
- Drop reference to removed CONFIG_ARCH_RANDOM #define
- Fix parsing of the "rodata=full" cmdline option
- Fix a bunch of issues in the SME register state switching and sigframe code
- Fix incorrect extraction of the CTR_EL0.CWG register field
- Fix ACPI cache topology probing when the PPTT is not present
- Trivial comment and whitespace fixes
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"A bumper crop of arm64 fixes for -rc3.
The largest change is fixing our parsing of the 'rodata=full' command
line option, which kstrtobool() started treating as 'rodata=false'.
The fix actually makes the parsing of that option much less fragile
and updates the documentation at the same time.
We still have a boot issue pending when KASLR is disabled at compile
time, but there's a fresh fix on the list which I'll send next week if
it holds up to testing.
Summary:
- Fix workaround for Cortex-A76 erratum #1286807
- Add workaround for AMU erratum #2457168 on Cortex-A510
- Drop reference to removed CONFIG_ARCH_RANDOM #define
- Fix parsing of the "rodata=full" cmdline option
- Fix a bunch of issues in the SME register state switching and sigframe code
- Fix incorrect extraction of the CTR_EL0.CWG register field
- Fix ACPI cache topology probing when the PPTT is not present
- Trivial comment and whitespace fixes"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64/sme: Don't flush SVE register state when handling SME traps
arm64/sme: Don't flush SVE register state when allocating SME storage
arm64/signal: Flush FPSIMD register state when disabling streaming mode
arm64/signal: Raise limit on stack frames
arm64/cache: Fix cache_type_cwg() for register generation
arm64/sysreg: Guard SYS_FIELD_ macros for asm
arm64/sysreg: Directly include bitfield.h
arm64: cacheinfo: Fix incorrect assignment of signed error value to unsigned fw_level
arm64: errata: add detection for AMEVCNTR01 incrementing incorrectly
arm64: fix rodata=full
arm64: Fix comment typo
docs/arm64: elf_hwcaps: unify newlines in HWCAP lists
arm64: adjust KASLR relocation after ARCH_RANDOM removal
arm64: Fix match_list for erratum 1286807 on Arm Cortex-A76
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Merge tag 'block-6.0-2022-08-26' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- MD pull request via Song:
- Fix for clustered raid (Guoqing Jiang)
- req_op fix (Bart Van Assche)
- Fix race condition in raid recreate (David Sloan)
- loop configuration overflow fix (Siddh)
- Fix missing commit_rqs call for certain conditions (Yu)
* tag 'block-6.0-2022-08-26' of git://git.kernel.dk/linux-block:
md: call __md_stop_writes in md_stop
Revert "md-raid: destroy the bitmap after destroying the thread"
md: Flush workqueue md_rdev_misc_wq in md_alloc()
md/raid10: Fix the data type of an r10_sync_page_io() argument
loop: Check for overflow while configuring loop
blk-mq: fix io hung due to missing commit_rqs
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Merge tag 'io_uring-6.0-2022-08-26' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
- Add missing header file to the MAINTAINERS entry for io_uring (Ammar)
- liburing and the kernel ship the same io_uring.h header, but one
change we've had for a long time only in liburing is to ensure it's
C++ safe. Add extern C around it, so we can more easily sync them in
the future (Ammar)
- Fix an off-by-one in the sync cancel added in this merge window (me)
- Error handling fix for passthrough (Kanchan)
- Fix for address saving for async execution for the zc tx support
(Pavel)
- Fix ordering for TCP zc notifications, so we always have them ordered
correctly between "data was sent" and "data was acked". This isn't
strictly needed with the notification slots, but we've been pondering
disabling the slot support for 6.0 - and if we do, then we do require
the ordering to be sane. Regardless of that, it's the sane thing to
do in terms of API (Pavel)
- Minor cleanup for indentation and lockdep annotation (Pavel)
* tag 'io_uring-6.0-2022-08-26' of git://git.kernel.dk/linux-block:
io_uring/net: save address for sendzc async execution
io_uring: conditional ->async_data allocation
io_uring/notif: order notif vs send CQEs
io_uring/net: fix indentation
io_uring/net: fix zc send link failing
io_uring/net: fix must_hold annotation
io_uring: fix submission-failure handling for uring-cmd
io_uring: fix off-by-one in sync cancelation file check
io_uring: uapi: Add `extern "C"` in io_uring.h for liburing
MAINTAINERS: Add `include/linux/io_uring_types.h`
fbcon_do_set_font() calls vc_resize() when font size is changed.
However, if if vc_resize() failed, current implementation doesn't
revert changes for font size, and this causes inconsistent state.
syzbot reported unable to handle page fault due to this issue [1].
syzbot's repro uses fault injection which cause failure for memory
allocation, so vc_resize() failed.
This patch fixes this issue by properly revert changes for font
related date when vc_resize() failed.
Link: https://syzkaller.appspot.com/bug?id=3443d3a1fa6d964dd7310a0cb1696d165a3e07c4 [1]
Reported-by: syzbot+a168dbeaaa7778273c1b@syzkaller.appspotmail.com
Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>
CC: stable@vger.kernel.org # 5.15+
10 fixes. Of the three core changes, the two large ones are a
complete reversion of the async rework and an ALUA timing rework (the
latter shouldn't affect non-ALUA paths). The remaining patches are
all small and all but one in drivers.
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:
"Ten fixes.
Of the three core changes, the two large ones are a complete reversion
of the async rework and an ALUA timing rework (the latter shouldn't
affect non-ALUA paths).
The remaining patches are all small and all but one in drivers"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: sd: Revert "Rework asynchronous resume support"
scsi: core: Fix passthrough retry counter handling
scsi: ufs: core: Reduce the power mode change timeout
scsi: storvsc: Remove WQ_MEM_RECLAIM from storvsc_error_wq
scsi: ufs: host: ufs-exynos: Make fsd_ufs_drvs static
scsi: megaraid_sas: Remove unnecessary kfree()
scsi: megaraid_sas: Fix double kfree()
scsi: ufs: core: Enable link lost interrupt
scsi: core: Allow the ALUA transitioning state enough time
scsi: qla2xxx: Disable ATIO interrupt coalesce for quad port ISP27XX
There are several places in the kernel where wait_on_bit is not followed
by a memory barrier (for example, in drivers/md/dm-bufio.c:new_read).
On architectures with weak memory ordering, it may happen that memory
accesses that follow wait_on_bit are reordered before wait_on_bit and
they may return invalid data.
Fix this class of bugs by introducing a new function "test_bit_acquire"
that works like test_bit, but has acquire memory ordering semantics.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Will Deacon <will@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This contains a pair of fixes for build-time warnings.
* 'riscv-variable_fixes_without_kvm' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/linux.git:
riscv: traps: add missing prototype
riscv: signal: fix missing prototype warning
Two sets of fixes this time around:
- A fix for the interrupt ordering of the l2-cache controller. If the
driver is enabled, it would spam the console /constantly/, rendering
the system useless.
- General cleanup for some bogus properties in the dt, part of my quest
for zero dtbs_check warnings.
On that note, the interrupt ordering adds a dtbs_check warning - but I
considered that fixing the potentially useless system was more of a
priority.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
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Merge tag 'dt-fixes-for-palmer-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git into fixes
Microchip RISC-V devicetree fixes for 6.0-rc3
Two sets of fixes this time around:
- A fix for the interrupt ordering of the l2-cache controller. If the
driver is enabled, it would spam the console /constantly/, rendering
the system useless.
- General cleanup for some bogus properties in the dt, part of my quest
for zero dtbs_check warnings.
On that note, the interrupt ordering adds a dtbs_check warning - but I
considered that fixing the potentially useless system was more of a
priority.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* tag 'dt-fixes-for-palmer-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/conor/linux.git:
riscv: dts: microchip: mpfs: remove pci axi address translation property
riscv: dts: microchip: mpfs: remove bogus card-detect-delay
riscv: dts: microchip: mpfs: remove ti,fifo-depth property
riscv: dts: microchip: mpfs: fix incorrect pcie child node name
riscv: dts: microchip: correct L2 cache interrupts
The success and return_code are needed by the filters. Move
audit_return_fixup() before the filters. This was causing syscall
auditing events to be missed.
Link: https://github.com/linux-audit/audit-kernel/issues/138
Cc: stable@vger.kernel.org
Fixes: 12c5e81d3f ("audit: prepare audit_context for use in calling contexts beyond syscalls")
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
[PM: manual merge required]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Current release - new code bugs:
- dsa: don't dereference NULL extack in dsa_slave_changeupper()
- dpaa: fix <1G ethernet on LS1046ARDB
- neigh: don't call kfree_skb() under spin_lock_irqsave()
Previous releases - regressions:
- r8152: fix the RX FIFO settings when suspending
- dsa: microchip: keep compatibility with device tree blobs with
no phy-mode
- Revert "net: macsec: update SCI upon MAC address change."
- Revert "xfrm: update SA curlft.use_time", comply with RFC 2367
Previous releases - always broken:
- netfilter: conntrack: work around exceeded TCP receive window
- ipsec: fix a null pointer dereference of dst->dev on a metadata
dst in xfrm_lookup_with_ifid
- moxa: get rid of asymmetry in DMA mapping/unmapping
- dsa: microchip: make learning configurable and keep it off
while standalone
- ice: xsk: prohibit usage of non-balanced queue id
- rxrpc: fix locking in rxrpc's sendmsg
Misc:
- another chunk of sysctl data race silencing
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from ipsec and netfilter (with one broken Fixes tag).
Current release - new code bugs:
- dsa: don't dereference NULL extack in dsa_slave_changeupper()
- dpaa: fix <1G ethernet on LS1046ARDB
- neigh: don't call kfree_skb() under spin_lock_irqsave()
Previous releases - regressions:
- r8152: fix the RX FIFO settings when suspending
- dsa: microchip: keep compatibility with device tree blobs with no
phy-mode
- Revert "net: macsec: update SCI upon MAC address change."
- Revert "xfrm: update SA curlft.use_time", comply with RFC 2367
Previous releases - always broken:
- netfilter: conntrack: work around exceeded TCP receive window
- ipsec: fix a null pointer dereference of dst->dev on a metadata dst
in xfrm_lookup_with_ifid
- moxa: get rid of asymmetry in DMA mapping/unmapping
- dsa: microchip: make learning configurable and keep it off while
standalone
- ice: xsk: prohibit usage of non-balanced queue id
- rxrpc: fix locking in rxrpc's sendmsg
Misc:
- another chunk of sysctl data race silencing"
* tag 'net-6.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (87 commits)
net: lantiq_xrx200: restore buffer if memory allocation failed
net: lantiq_xrx200: fix lock under memory pressure
net: lantiq_xrx200: confirm skb is allocated before using
net: stmmac: work around sporadic tx issue on link-up
ionic: VF initial random MAC address if no assigned mac
ionic: fix up issues with handling EAGAIN on FW cmds
ionic: clear broken state on generation change
rxrpc: Fix locking in rxrpc's sendmsg
net: ethernet: mtk_eth_soc: fix hw hash reporting for MTK_NETSYS_V2
MAINTAINERS: rectify file entry in BONDING DRIVER
i40e: Fix incorrect address type for IPv6 flow rules
ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter
net: Fix a data-race around sysctl_somaxconn.
net: Fix a data-race around netdev_unregister_timeout_secs.
net: Fix a data-race around gro_normal_batch.
net: Fix data-races around sysctl_devconf_inherit_init_net.
net: Fix data-races around sysctl_fb_tunnels_only_for_init_net.
net: Fix a data-race around netdev_budget_usecs.
net: Fix data-races around sysctl_max_skb_frags.
net: Fix a data-race around netdev_budget.
...
Aleksander Jan Bajkowski says:
====================
net: lantiq_xrx200: fix errors under memory pressure
This series fixes issues that can occur in the driver under memory pressure.
Situations when the system cannot allocate memory are rare, so the mentioned
bugs have been fixed recently. The patches have been tested on a BT Home
router with the Lantiq xRX200 chipset.
Changelog:
v3: - removed netdev_err() log from the first patch
v2:
- the second patch has been changed, so that under memory pressure situation
the driver will not receive packets indefinitely regardless of the NAPI budget,
- the third patch has been added.
====================
Link: https://lore.kernel.org/r/20220824215408.4695-1-olek2@wp.pl
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
In a situation where memory allocation fails, an invalid buffer address
is stored. When this descriptor is used again, the system panics in the
build_skb() function when accessing memory.
Fixes: 7ea6cd16f1 ("lantiq: net: fix duplicated skb in rx descriptor ring")
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
When the xrx200_hw_receive() function returns -ENOMEM, the NAPI poll
function immediately returns an error.
This is incorrect for two reasons:
* the function terminates without enabling interrupts or scheduling NAPI,
* the error code (-ENOMEM) is returned instead of the number of received
packets.
After the first memory allocation failure occurs, packet reception is
locked due to disabled interrupts from DMA..
Fixes: fe1a56420c ("net: lantiq: Add Lantiq / Intel VRX200 Ethernet driver")
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
xrx200_hw_receive() assumes build_skb() always works and goes straight
to skb_reserve(). However, build_skb() can fail under memory pressure.
Add a check in case build_skb() failed to allocate and return NULL.
Fixes: e015593573 ("net: lantiq_xrx200: convert to build_skb")
Reported-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This is a follow-up to the discussion in [0]. It seems to me that
at least the IP version used on Amlogic SoC's sometimes has a problem
if register MAC_CTRL_REG is written whilst the chip is still processing
a previous write. But that's just a guess.
Adding a delay between two writes to this register helps, but we can
also simply omit the offending second write. This patch uses the second
approach and is based on a suggestion from Qi Duan.
Benefit of this approach is that we can save few register writes, also
on not affected chip versions.
[0] https://www.spinics.net/lists/netdev/msg831526.html
Fixes: bfab27a146 ("stmmac: add the experimental PCI support")
Suggested-by: Qi Duan <qi.duan@amlogic.com>
Suggested-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/e99857ce-bd90-5093-ca8c-8cd480b5a0a2@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2022-08-24 (ixgbe, i40e)
This series contains updates to ixgbe and i40e drivers.
Jake stops incorrect resetting of SYSTIME registers when starting
cyclecounter for ixgbe.
Sylwester corrects a check on source IP address when validating destination
for i40e.
* '10GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
i40e: Fix incorrect address type for IPv6 flow rules
ixgbe: stop resetting SYSTIME in ixgbe_ptp_start_cyclecounter
====================
Link: https://lore.kernel.org/r/20220824193748.874343-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
