Currently the command 'lx-symbols' in gdb exits with the error`Function
"do_init_module" not defined in "kernel/module.c"`. This occurs because
the file kernel/module.c was moved to kernel/module/main.c.
Fix this breakage by changing the path to "kernel/module/main.c" in
LoadModuleBreakpoint.
Signed-off-by: Khalid Masum <khalid.masum.92@gmail.com> Acked-by: Luis Chamberlain <mcgrof@kernel.org> Fixes: cfc1d277891e ("module: Move all into module/") Reviewed-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sedat Dilek noticed that I had an extraneous semicolon at the end of a
line in the previous patch.
It's harmless, but unintentional, and while compilers just treat it as
an extra empty statement, for all I know some other tooling might warn
about it. So clean it up before other people notice too ;)
watchqueue: make sure to serialize 'wqueue->defunct' properly
When the pipe is closed, we mark the associated watchqueue defunct by
calling watch_queue_clear(). However, while that is protected by the
watchqueue lock, new watchqueue entries aren't actually added under that
lock at all: they use the pipe->rd_wait.lock instead, and looking up
that pipe happens without any locking.
The watchqueue code uses the RCU read-side section to make sure that the
wqueue entry itself hasn't disappeared, but that does not protect the
pipe_info in any way.
So make sure to actually hold the wqueue lock when posting watch events,
properly serializing against the pipe being torn down.
Eric Snowberg [Wed, 20 Jul 2022 16:40:27 +0000 (12:40 -0400)]
lockdown: Fix kexec lockdown bypass with ima policy
The lockdown LSM is primarily used in conjunction with UEFI Secure Boot.
This LSM may also be used on machines without UEFI. It can also be
enabled when UEFI Secure Boot is disabled. One of lockdown's features
is to prevent kexec from loading untrusted kernels. Lockdown can be
enabled through a bootparam or after the kernel has booted through
securityfs.
If IMA appraisal is used with the "ima_appraise=log" boot param,
lockdown can be defeated with kexec on any machine when Secure Boot is
disabled or unavailable. IMA prevents setting "ima_appraise=log" from
the boot param when Secure Boot is enabled, but this does not cover
cases where lockdown is used without Secure Boot.
To defeat lockdown, boot without Secure Boot and add ima_appraise=log to
the kernel command line; then:
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Two bug fixes for irdma:
- x722 does not support 1GB pages, trying to configure them will
corrupt the dma mapping
- Fix a sleep while holding a spinlock"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/irdma: Fix sleep from invalid context BUG
RDMA/irdma: Do not advertise 1GB page size for x722
Merge tag 'perf-tools-fixes-for-v5.19-2022-07-17' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Fix SIGSEGV when processing syscall args in perf.data files in 'perf
trace'
- Sync kvm, msr-index and cpufeatures headers with the kernel sources
- Fix 'convert perf time to TSC' 'perf test':
- No need to open events twice
- Fix finding correct event on hybrid systems
* tag 'perf-tools-fixes-for-v5.19-2022-07-17' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf trace: Fix SIGSEGV when processing syscall args
perf tests: Fix Convert perf time to TSC test for hybrid
perf tests: Stop Convert perf time to TSC test opening events twice
tools arch x86: Sync the msr-index.h copy with the kernel sources
tools headers cpufeatures: Sync with the kernel sources
tools headers UAPI: Sync linux/kvm.h with the kernel sources
Matthew Auld [Tue, 12 Jul 2022 17:40:50 +0000 (18:40 +0100)]
drm/i915/ttm: fix 32b build
Since segment_pages is no longer a compile time constant, it looks the
DIV_ROUND_UP(node->size, segment_pages) breaks the 32b build. Simplest
is just to use the ULL variant, but really we should need not need more
than u32 for the page alignment (also we are limited by that due to the
sg->length type), so also make it all u32.
Merge tag 'perf_urgent_for_v5.19_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Borislav Petkov:
- A single data race fix on the perf event cleanup path to avoid
endless loops due to insufficient locking
* tag 'perf_urgent_for_v5.19_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Fix data race between perf_event_set_output() and perf_mmap_close()
Merge tag 'x86_urgent_for_v5.19_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Improve the check whether the kernel supports WP mappings so that it
can accomodate a XenPV guest due to how the latter is setting up the
PAT machinery
- Now that the retbleed nightmare is public, here's the first round of
fallout fixes:
* Fix a build failure on 32-bit due to missing include
* Remove an untraining point in espfix64 return path
* other small cleanups
* tag 'x86_urgent_for_v5.19_rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/bugs: Remove apostrophe typo
um: Add missing apply_returns()
x86/entry: Remove UNTRAIN_RET from native_irq_return_ldt
x86/bugs: Mark retbleed_strings static
x86/pat: Fix x86_has_pat_wp()
x86/asm/32: Fix ANNOTATE_UNRET_SAFE use on 32-bit
Merge tag 'input-for-v5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
- fix Goodix driver to properly behave on the Aya Neo Next
- some more sanity checks in usbtouchscreen driver
- a tweak in wm97xx driver in preparation for remove() to return void
- a clarification in input core regarding units of measurement for
resolution on touch events.
* tag 'input-for-v5.19-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: document the units for resolution of size axes
Input: goodix - call acpi_device_fix_up_power() in some cases
Input: wm97xx - make .remove() obviously always return 0
Input: usbtouchscreen - add driver_info sanity check
perf trace: Fix SIGSEGV when processing syscall args
On powerpc, 'perf trace' is crashing with a SIGSEGV when trying to
process a perf.data file created with 'perf trace record -p':
#0 0x00000001225b8988 in syscall_arg__scnprintf_augmented_string <snip> at builtin-trace.c:1492
#1 syscall_arg__scnprintf_filename <snip> at builtin-trace.c:1492
#2 syscall_arg__scnprintf_filename <snip> at builtin-trace.c:1486
#3 0x00000001225bdd9c in syscall_arg_fmt__scnprintf_val <snip> at builtin-trace.c:1973
#4 syscall__scnprintf_args <snip> at builtin-trace.c:2041
#5 0x00000001225bff04 in trace__sys_enter <snip> at builtin-trace.c:2319
That points to the below code in tools/perf/builtin-trace.c:
/*
* If this is raw_syscalls.sys_enter, then it always comes with the 6 possible
* arguments, even if the syscall being handled, say "openat", uses only 4 arguments
* this breaks syscall__augmented_args() check for augmented args, as we calculate
* syscall->args_size using each syscalls:sys_enter_NAME tracefs format file,
* so when handling, say the openat syscall, we end up getting 6 args for the
* raw_syscalls:sys_enter event, when we expected just 4, we end up mistakenly
* thinking that the extra 2 u64 args are the augmented filename, so just check
* here and avoid using augmented syscalls when the evsel is the raw_syscalls one.
*/
if (evsel != trace->syscalls.events.sys_enter)
augmented_args = syscall__augmented_args(sc, sample, &augmented_args_size, trace->raw_augmented_syscalls_args_size);
As the comment points out, we should not be trying to augment the args
for raw_syscalls. However, when processing a perf.data file, we are not
initializing those properly. Fix the same.
Reported-by: Claudio Carvalho <cclaudio@linux.ibm.com> Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20220707090900.572584-1-naveen.n.rao@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Adrian Hunter [Wed, 13 Jul 2022 12:34:59 +0000 (15:34 +0300)]
perf tests: Fix Convert perf time to TSC test for hybrid
The test does not always correctly determine the number of events for
hybrids, nor allow for more than 1 evsel when parsing.
Fix by iterating the events actually created and getting the correct
evsel for the events processed.
Fixes: d9da6f70eb235110 ("perf tests: Support 'Convert perf time to TSC' test for hybrid") Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: https://lore.kernel.org/r/20220713123459.24145-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Adrian Hunter [Wed, 13 Jul 2022 12:34:58 +0000 (15:34 +0300)]
perf tests: Stop Convert perf time to TSC test opening events twice
Do not call evlist__open() twice.
Fixes: 5bb017d4b97a0f13 ("perf test: Fix error message for test case 71 on s390, where it is not supported") Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: https://lore.kernel.org/r/20220713123459.24145-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
$ tools/perf/trace/beauty/tracepoints/x86_msr.sh > before
$ cp arch/x86/include/asm/msr-index.h tools/arch/x86/include/asm/msr-index.h
$ tools/perf/trace/beauty/tracepoints/x86_msr.sh > after
$ diff -u before after
$
Just silences this perf build warning:
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/msr-index.h' differs from latest version at 'arch/x86/include/asm/msr-index.h'
diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/lkml/YtQTm9wsB3hxQWvy@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
CC /tmp/build/perf/bench/mem-memcpy-x86-64-asm.o
CC /tmp/build/perf/bench/mem-memset-x86-64-asm.o
And addresses this perf build warning:
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/cpufeatures.h' differs from latest version at 'arch/x86/include/asm/cpufeatures.h'
diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures.h
Warning: Kernel ABI header at 'tools/arch/x86/include/asm/disabled-features.h' differs from latest version at 'arch/x86/include/asm/disabled-features.h'
diff -u tools/arch/x86/include/asm/disabled-features.h arch/x86/include/asm/disabled-features.h
Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org Link: https://lore.kernel.org/lkml/YtQM40VmiLTkPND2@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools headers UAPI: Sync linux/kvm.h with the kernel sources
To pick the changes in:
1b870fa5573e260b ("kvm: stats: tell userspace which values are boolean")
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: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Link: http://lore.kernel.org/lkml/YtQLDvQrBhJNl3n5@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Merge tag 'for-5.19-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs reverts from David Sterba:
"Due to a recent report [1] we need to revert the radix tree to xarray
conversion patches.
There's a problem with sleeping under spinlock, when xa_insert could
allocate memory under pressure. We use GFP_NOFS so this is a real
problem that we unfortunately did not discover during review.
I'm sorry to do such change at rc6 time but the revert is IMO the
safer option, there are patches to use mutex instead of the spin locks
but that would need more testing. The revert branch has been tested on
a few setups, all seem ok.
The conversion to xarray will be revisited in the future"
Link: https://lore.kernel.org/linux-btrfs/cover.1657097693.git.fdmanana@suse.com/
* tag 'for-5.19-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
Revert "btrfs: turn delayed_nodes_tree into an XArray"
Revert "btrfs: turn name_cache radix tree into XArray in send_ctx"
Revert "btrfs: turn fs_info member buffer_radix into XArray"
Revert "btrfs: turn fs_roots_radix in btrfs_fs_info into an XArray"
Merge tag 'tty-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty and serial driver fixes from Greg KH:
"Here are some TTY and Serial driver fixes for 5.19-rc7. They resolve a
number of reported problems including:
- longtime bug in pty_write() that has been reported in the past.
- 8250 driver fixes
- new serial device ids
- vt overlapping data copy bugfix
- other tiny serial driver bugfixes
All of these have been in linux-next for a while with no reported
problems"
* tag 'tty-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: use new tty_insert_flip_string_and_push_buffer() in pty_write()
tty: extract tty_flip_buffer_commit() from tty_flip_buffer_push()
serial: 8250: dw: Fix the macro RZN1_UART_xDMACR_8_WORD_BURST
vt: fix memory overlapping when deleting chars in the buffer
serial: mvebu-uart: correctly report configured baudrate value
serial: 8250: Fix PM usage_count for console handover
serial: 8250: fix return error code in serial8250_request_std_resource()
serial: stm32: Clear prev values before setting RTS delays
tty: Add N_CAN327 line discipline ID for ELM327 based CAN driver
serial: 8250: Fix __stop_tx() & DMA Tx restart races
serial: pl011: UPSTAT_AUTORTS requires .throttle/unthrottle
tty: serial: samsung_tty: set dma burst_size to 1
serial: 8250: dw: enable using pdata with ACPI
Merge tag 's390-5.19-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Alexander Gordeev:
- Fix building of out-of-tree kernel modules without a pre-built kernel
in case CONFIG_EXPOLINE_EXTERN=y.
- Fix a reference counting error that could prevent unloading of zcrypt
modules.
* tag 's390-5.19-6' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/ap: fix error handling in __verify_queue_reservations()
s390/nospec: remove unneeded header includes
s390/nospec: build expoline.o for modules_prepare target
Merge tag 'pm-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki
"Fix recent regression in the cpufreq mediatek driver related to
incorrect handling of regulator_get_optional() return value
(AngeloGioacchino Del Regno)"
* tag 'pm-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: mediatek: Handle sram regulator probe deferral
Merge tag 'acpi-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Fix more fallout from recent changes of the ACPI CPPC handling on AMD
platforms (Mario Limonciello)"
* tag 'acpi-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: CPPC: Fix enabling CPPC on AMD systems with shared memory
random: cap jitter samples per bit to factor of HZ
Currently the jitter mechanism will require two timer ticks per
iteration, and it requires N iterations per bit. This N is determined
with a small measurement, and if it's too big, it won't waste time with
jitter entropy because it'd take too long or not have sufficient entropy
anyway.
With the current max N of 32, there are large timeouts on systems with a
small CONFIG_HZ. Rather than set that maximum to 32, instead choose a
factor of CONFIG_HZ. In this case, 1/30 seems to yield sane values for
different configurations of CONFIG_HZ.
Reported-by: Vladimir Murzin <vladimir.murzin@arm.com> Fixes: 78c768e619fb ("random: vary jitter iterations based on cycle counter speed") Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge tag 'riscv-for-linus-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix to avoid printing a warning when modules do not exercise any
errata-dependent behavior and the SiFive errata are enabled.
- A fix to the Microchip PFSOC to attach the L2 cache to the CPU nodes.
* tag 'riscv-for-linus-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: don't warn for sifive erratas in modules
riscv: dts: microchip: hook up the mpfs' l2cache
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"RISC-V:
- Fix missing PAGE_PFN_MASK
- Fix SRCU deadlock caused by kvm_riscv_check_vcpu_requests()
x86:
- Fix for nested virtualization when TSC scaling is active
- Estimate the size of fastcc subroutines conservatively, avoiding
disastrous underestimation when return thunks are enabled
- Avoid possible use of uninitialized fields of 'struct
kvm_lapic_irq'
Generic:
- Mark as such the boolean values available from the statistics file
descriptors
- Clarify statistics documentation"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: emulate: do not adjust size of fastop and setcc subroutines
KVM: x86: Fully initialize 'struct kvm_lapic_irq' in kvm_pv_kick_cpu_op()
Documentation: kvm: clarify histogram units
kvm: stats: tell userspace which values are boolean
x86/kvm: fix FASTOP_SIZE when return thunks are enabled
KVM: nVMX: Always enable TSC scaling for L2 when it was enabled for L1
RISC-V: KVM: Fix SRCU deadlock caused by kvm_riscv_check_vcpu_requests()
riscv: Fix missing PAGE_PFN_MASK
Merge tag 'ceph-for-5.19-rc7' of https://github.com/ceph/ceph-client
Pull ceph fix from Ilya Dryomov:
"A folio locking fixup that Xiubo and David cooperated on, marked for
stable. Most of it is in netfs but I picked it up into ceph tree on
agreement with David"
* tag 'ceph-for-5.19-rc7' of https://github.com/ceph/ceph-client:
netfs: do not unlock and put the folio twice
Merge tag 'spi-fix-v5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few driver specific fixes, none especially remarkable, plus a
MAINTAINERS file update due to the previous maintainer for the NXP
FSPI driver having left the company"
* tag 'spi-fix-v5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: cadence-quadspi: Remove spi_master_put() in probe failure path
MAINTAINERS: change the NXP FSPI driver maintainer.
spi: amd: Limit max transfer and message size
spi: aspeed: Fix division by zero
spi: aspeed: Add dev_dbg() to dump the spi-mem direct mapping descriptor
Revert the xarray conversion, there's a problem with potential
sleep-inside-spinlock [1] when calling xa_insert that triggers GFP_NOFS
allocation. The radix tree used the preloading mechanism to avoid
sleeping but this is not available in xarray.
Conversion from spin lock to mutex is possible but at time of rc6 is
riskier than a clean revert.
Revert the xarray conversion, there's a problem with potential
sleep-inside-spinlock [1] when calling xa_insert that triggers GFP_NOFS
allocation. The radix tree used the preloading mechanism to avoid
sleeping but this is not available in xarray.
Conversion from spin lock to mutex is possible but at time of rc6 is
riskier than a clean revert.
Revert the xarray conversion, there's a problem with potential
sleep-inside-spinlock [1] when calling xa_insert that triggers GFP_NOFS
allocation. The radix tree used the preloading mechanism to avoid
sleeping but this is not available in xarray.
Conversion from spin lock to mutex is possible but at time of rc6 is
riskier than a clean revert.
Revert the xarray conversion, there's a problem with potential
sleep-inside-spinlock [1] when calling xa_insert that triggers GFP_NOFS
allocation. The radix tree used the preloading mechanism to avoid
sleeping but this is not available in xarray.
Conversion from spin lock to mutex is possible but at time of rc6 is
riskier than a clean revert.
Merge tag 'platform-drivers-x86-v5.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
"Highlights:
- Fix brightness key events getting reported twice on some Dells.
Regression caused by recent Panasonic hotkey fixes
- Fix poweroff no longer working on some devices regression caused
by recent poweroff handler rework
- Mark new (in 5.19) Intel IFS driver as broken, because of some
issues surrounding the userspace (sysfs) API which need to be
cleared up
- Some hardware-id / quirk additions"
* tag 'platform-drivers-x86-v5.19-4' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
ACPI: video: Fix acpi_video_handles_brightness_key_presses()
platform/x86: intel_atomisp2_led: Also turn off the always-on camera LED on the Asus T100TAF
platform/x86/intel/ifs: Mark as BROKEN
platform/x86: asus-wmi: Add key mappings
efi: Fix efi_power_off() not being run before acpi_power_off() when necessary
platform/x86: x86-android-tablets: Fix Lenovo Yoga Tablet 2 830/1050 poweroff again
platform/x86: gigabyte-wmi: add support for B660I AORUS PRO DDR4
platform/x86/amd/pmc: Add new platform support
platform/x86/amd/pmc: Add new acpi id for PMC controller
Merge tag 'drm-fixes-2022-07-15' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"This is the regular fixes pull for this week. This has a bunch of
amdgpu fixes, major one reverts the buddy allocator until it can be
tested more, otherwise just small ones, then i915 has a bunch of
fixes.
The outstanding firmware regressions reported by phoronix will
hopefully be dealt with ASAP.
amdgpu:
- revert buddy allocator support for now
- DP MST blank screen fix for specific platforms
- MEC firmware check fix for GC 10.3.7
- Deep color fix for DCE
- Fix possible divide by 0
- Coverage blend mode fix
- Fix cursor only commit timestamps
i915:
- Selftest fix
- TTM fix sg_table construction
- Error return fixes
- Fix a performance regression related to waitboost
- Fix GT resets"
* tag 'drm-fixes-2022-07-15' of git://anongit.freedesktop.org/drm/drm:
drm/amd/display: Ensure valid event timestamp for cursor-only commits
drm/amd/display: correct check of coverage blend mode
drm/amd/pm: Prevent divide by zero
drm/amd/display: Only use depth 36 bpp linebuffers on DCN display engines.
drm/amdkfd: correct the MEC atomic support firmware checking for GC 10.3.7
drm/amd/display: Ignore First MST Sideband Message Return Error
drm/i915/selftests: fix subtraction overflow bug
drm/i915/gem: Look for waitboosting across the whole object prior to individual waits
drm/i915/gt: Serialize TLB invalidates with GT resets
drm/i915/gt: Serialize GRDOM access between multiple engine resets
drm/i915/ttm: fix sg_table construction
drm/i915/selftests: fix a couple IS_ERR() vs NULL tests
drm/i915: Fix vm use-after-free in vma destruction
drm/i915/guc: ADL-N should use the same GuC FW as ADL-S
drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()
drm/i915/gvt: IS_ERR() vs NULL bug in intel_gvt_update_reg_whitelist()
Revert "drm/amdgpu: add drm buddy support to amdgpu"
Merge tag 'sysctl-fixes-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux
Pyll sysctl fix from Luis Chamberlain:
"Only one fix for sysctl"
* tag 'sysctl-fixes-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
mm: sysctl: fix missing numa_stat when !CONFIG_HUGETLB_PAGE
Paolo Bonzini [Fri, 15 Jul 2022 11:34:55 +0000 (07:34 -0400)]
KVM: emulate: do not adjust size of fastop and setcc subroutines
Instead of doing complicated calculations to find the size of the subroutines
(which are even more complicated because they need to be stringified into
an asm statement), just hardcode to 16.
It is less dense for a few combinations of IBT/SLS/retbleed, but it has
the advantage of being really simple.
Cc: stable@vger.kernel.org # 5.15.x: 84e7051c0bc1: x86/kvm: fix FASTOP_SIZE when return thunks are enabled Cc: stable@vger.kernel.org Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
John Ogness [Fri, 15 Jul 2022 06:10:42 +0000 (08:16 +0206)]
printk: do not wait for consoles when suspended
The console_stop() and console_start() functions call pr_flush().
When suspending, these functions are called by the serial subsystem
while the serial port is suspended. In this scenario, if there are
any pending messages, a call to pr_flush() will always result in a
timeout because the serial port cannot make forward progress. This
causes longer suspend and resume times.
Add a check in pr_flush() so that it will immediately timeout if
the consoles are suspended.
Tony Krowiak [Wed, 6 Jul 2022 21:43:29 +0000 (17:43 -0400)]
s390/ap: fix error handling in __verify_queue_reservations()
The AP bus's __verify_queue_reservations function increments the ref count
for the device driver passed in as a parameter, but fails to decrement it
before returning control to the caller. This will prevents any subsequent
removal of the module.
Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com> Reported-by: Tony Krowiak <akrowiak@linux.ibm.com> Reviewed-by: Harald Freudenberger <freude@linux.ibm.com> Fixes: 4f8206b88286 ("s390/ap: driver callback to indicate resource in use") Link: https://lore.kernel.org/r/20220706222619.602094-1-akrowiak@linux.ibm.com Cc: stable@vger.kernel.org
[agordeev@linux.ibm.com fixed description, added Fixes and Link] Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Dave Airlie [Fri, 15 Jul 2022 01:26:20 +0000 (11:26 +1000)]
Merge tag 'amd-drm-fixes-5.19-2022-07-13' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-5.19-2022-07-13:
amdgpu:
- DP MST blank screen fix for specific platforms
- MEC firmware check fix for GC 10.3.7
- Deep color fix for DCE
- Fix possible divide by 0
- Coverage blend mode fix
- Fix cursor only commit timestamps
Nick Desaulniers [Thu, 14 Jul 2022 20:56:43 +0000 (13:56 -0700)]
ubsan: disable UBSAN_DIV_ZERO for clang
Building with UBSAN_DIV_ZERO with clang produces numerous fallthrough
warnings from objtool.
In the case of uncheck division, UBSAN_DIV_ZERO may introduce new
control flow to check for division by zero.
Because the result of the division is undefined, LLVM may optimize the
control flow such that after the call to __ubsan_handle_divrem_overflow
doesn't matter. If panic_on_warn was set,
__ubsan_handle_divrem_overflow would panic.
The problem is is that panic_on_warn is run time configurable. If it's
disabled, then we cannot guarantee that we will be able to recover
safely. Disable this config for clang until we can come up with a
solution in LLVM.
Dave Chinner reports:
"As I suspected would occur, this change causes test failures. e.g
generic/517 in fstests fails with:
generic/517 1s ... - output mismatch [..]
-deduped 131172/131172 bytes at offset 65536
+deduped 131072/131172 bytes at offset 65536"
can you please revert this commit for the 5.19 series to give us more
time to investigate and consider the impact of the the API change on
userspace applications before we commit to changing the API"
That changed return value seems to reflect reality, but with the fstest
change, let's revert for now.
Muchun Song [Thu, 9 Jun 2022 10:40:32 +0000 (18:40 +0800)]
mm: sysctl: fix missing numa_stat when !CONFIG_HUGETLB_PAGE
"numa_stat" should not be included in the scope of CONFIG_HUGETLB_PAGE, if
CONFIG_HUGETLB_PAGE is not configured even if CONFIG_NUMA is configured,
"numa_stat" is missed form /proc. Move it out of CONFIG_HUGETLB_PAGE to
fix it.
Fixes: 4518085e127d ("mm, sysctl: make NUMA stats configurable") Signed-off-by: Muchun Song <songmuchun@bytedance.com> Cc: <stable@vger.kernel.org> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Merge tag 'net-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from netfilter, bpf and wireless.
Still no major regressions, the release continues to be calm. An
uptick of fixes this time around due to trivial data race fixes and
patches flowing down from subtrees.
There has been a few driver fixes (particularly a few fixes for false
positives due to 66e4c8d95008 which went into -next in May!) that make
me worry the wide testing is not exactly fully through.
So "calm" but not "let's just cut the final ASAP" vibes over here.
Current release - regressions:
- wifi: rtw88: fix write to const table of channel parameters
Current release - new code bugs:
- mac80211: add gfp_t arg to ieeee80211_obss_color_collision_notify
- mlx5:
- TC, allow offload from uplink to other PF's VF
- Lag, decouple FDB selection and shared FDB
- Lag, correct get the port select mode str
- bnxt_en: fix and simplify XDP transmit path
- r8152: fix accessing unset transport header
Previous releases - regressions:
- conntrack: fix crash due to confirmed bit load reordering (after
atomic -> refcount conversion)
- stmmac: dwc-qos: disable split header for Tegra194
Previous releases - always broken:
- mlx5e: ring the TX doorbell on DMA errors
- bpf: make sure mac_header was set before using it
- mac80211: do not wake queues on a vif that is being stopped
- mac80211: fix queue selection for mesh/OCB interfaces
- ip: fix dflt addr selection for connected nexthop
- seg6: fix skb checksums for SRH encapsulation/insertion
- xdp: fix spurious packet loss in generic XDP TX path
- bunch of sysctl data race fixes
- nf_log: incorrect offset to network header
Misc:
- bpf: add flags arg to bpf_dynptr_read and bpf_dynptr_write APIs"
* tag 'net-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (87 commits)
nfp: flower: configure tunnel neighbour on cmsg rx
net/tls: Check for errors in tls_device_init
MAINTAINERS: Add an additional maintainer to the AMD XGBE driver
xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue
selftests/net: test nexthop without gw
ip: fix dflt addr selection for connected nexthop
net: atlantic: remove aq_nic_deinit() when resume
net: atlantic: remove deep parameter on suspend/resume functions
sfc: fix kernel panic when creating VF
seg6: bpf: fix skb checksum in bpf_push_seg6_encap()
seg6: fix skb checksum in SRv6 End.B6 and End.B6.Encaps behaviors
seg6: fix skb checksum evaluation in SRH encapsulation/insertion
sfc: fix use after free when disabling sriov
net: sunhme: output link status with a single print.
r8152: fix accessing unset transport header
net: stmmac: fix leaks in probe
net: ftgmac100: Hold reference returned by of_get_child_by_name()
nexthop: Fix data-races around nexthop_compat_mode.
ipv4: Fix data-races around sysctl_ip_dynaddr.
tcp: Fix a data-race around sysctl_tcp_ecn_fallback.
...
Commit 3a0cf7ab8df3 ("ACPI: video: Change how we determine if brightness
key-presses are handled") made acpi_video_handles_brightness_key_presses()
report false when none of the ACPI Video Devices support backlight control.
But it turns out that at least on a Dell Inspiron N4010 there is no ACPI
backlight control, yet brightness hotkeys are still reported through
the ACPI Video Bus; and since acpi_video_handles_brightness_key_presses()
now returns false, brightness keypresses are now reported twice.
To fix this rename the has_backlight flag to may_report_brightness_keys and
also set it the first time a brightness key press event is received.
Depending on the delivery of the other ACPI (WMI) event vs the ACPI Video
Bus event this means that the first brightness key press might still get
reported twice, but all further keypresses will be filtered as before.
Note that this relies on other drivers reporting brightness key events
calling acpi_video_handles_brightness_key_presses() when delivering
the events (rather then once during driver probe). This is already
required and documented in include/acpi/video.h:
/*
* Note: The value returned by acpi_video_handles_brightness_key_presses()
* may change over time and should not be cached.
*/
Merge tag '5.19-rc6-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
"Three smb3 client fixes:
- two multichannel fixes: fix a potential deadlock freeing a channel,
and fix a race condition on failed creation of a new channel
- mount failure fix: work around a server bug in some common older
Samba servers by avoiding padding at the end of the negotiate
protocol request"
* tag '5.19-rc6-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
smb3: workaround negprot bug in some Samba servers
cifs: remove unnecessary locking of chan_lock while freeing session
cifs: fix race condition with delayed threads
Merge tag 'nfsd-5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd fixes from Chuck Lever:
"Notable regression fixes:
- Enable SETATTR(time_create) to fix regression with Mac OS clients
- Fix a lockd crasher and broken NLM UNLCK behavior"
* tag 'nfsd-5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
lockd: fix nlm_close_files
lockd: set fl_owner when unlocking files
NFSD: Decode NFSv4 birth time attribute
Merge tag 'integrity-v5.19-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull integrity fixes from Mimi Zohar:
"Here are a number of fixes for recently found bugs.
Only 'ima: fix violation measurement list record' was introduced in
the current release. The rest address existing bugs"
* tag 'integrity-v5.19-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
ima: Fix potential memory leak in ima_init_crypto()
ima: force signature verification when CONFIG_KEXEC_SIG is configured
ima: Fix a potential integer overflow in ima_appraise_measurement
ima: fix violation measurement list record
Revert "evm: Fix memleak in init_desc"
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
- quieten the spectre-bhb prints
- mark flattened device tree sections as shareable
- remove some obsolete CPU domain code and help text
- fix thumb unaligned access abort emulation
- fix amba_device_add() refcount underflow
- fix literal placement
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9208/1: entry: add .ltorg directive to keep literals in range
ARM: 9207/1: amba: fix refcount underflow if amba_device_add() fails
ARM: 9214/1: alignment: advance IT state after emulating Thumb instruction
ARM: 9213/1: Print message about disabled Spectre workarounds only once
ARM: 9212/1: domain: Modify Kconfig help text
ARM: 9211/1: domain: drop modify_domain()
ARM: 9210/1: Mark the FDT_FIXED sections as shareable
ARM: 9209/1: Spectre-BHB: avoid pr_info() every time a CPU comes out of idle
um: Replace to_phys() and to_virt() with less generic function names
The UML function names to_virt() and to_phys() are exposed by UML
headers, and are very generic and may be defined by drivers. As it
turns out, commit 9409c9b6709e ("pmem: refactor pmem_clear_poison()")
did exactly that.
This results in build errors such as the following when trying to build
um:allmodconfig:
drivers/nvdimm/pmem.c: In function ‘pmem_dax_zero_page_range’:
./arch/um/include/asm/page.h:105:20: error: too few arguments to function ‘to_phys’
105 | #define __pa(virt) to_phys((void *) (unsigned long) (virt))
| ^~~~~~~
Use less generic function names for the um specific to_phys() and
to_virt() functions to fix the problem and to avoid similar problems in
the future.
Fixes: 9409c9b6709e ("pmem: refactor pmem_clear_poison()") Cc: Dan Williams <dan.j.williams@intel.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge tag 'sound-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Hopefully the last one for 5.19. This became bigger than wished, but
all changes are pretty device-specific small fixes, which look less
worrisome.
The majority of changes are about various ASoC fixes, while the usual
HD-audio quirks are included as well"
* tag 'sound-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (28 commits)
ALSA: hda/realtek - Enable the headset-mic on a Xiaomi's laptop
ALSA: hda/realtek - Fix headset mic problem for a HP machine with alc221
ALSA: hda/realtek: fix mute/micmute LEDs for HP machines
ALSA: hda/realtek - Fix headset mic problem for a HP machine with alc671
ALSA: hda - Add fixup for Dell Latitidue E5430
ALSA: hda/conexant: Apply quirk for another HP ProDesk 600 G3 model
ALSA: hda/realtek: Fix headset mic for Acer SF313-51
ASoC: Intel: Skylake: Correct the handling of fmt_config flexible array
ASoC: Intel: Skylake: Correct the ssp rate discovery in skl_get_ssp_clks()
ASoC: rt5640: Fix the wrong state of JD1 and JD2
ASoC: Intel: sof_rt5682: fix out-of-bounds array access
ASoC: qdsp6: fix potential memory leak in q6apm_get_audioreach_graph()
ASoC: tas2764: Fix amp gain register offset & default
ASoC: tas2764: Correct playback volume range
ASoC: tas2764: Fix and extend FSYNC polarity handling
ASoC: tas2764: Add post reset delays
ASoC: dt-bindings: Fix description for msm8916
ASoC: doc: Capitalize RESET line name
ASoC: arizona: Update arizona_aif_cfg_changed to use RX_BCLK_RATE
ASoC: cs47l92: Fix event generation for OUT1 demux
...
nfp: flower: configure tunnel neighbour on cmsg rx
nfp_tun_write_neigh() function will configure a tunnel neighbour when
calling nfp_tun_neigh_event_handler() or nfp_flower_cmsg_process_one_rx()
(with no tunnel neighbour type) from firmware.
When configuring IP on physical port as a tunnel endpoint, no operation
will be performed after receiving the cmsg mentioned above.
Therefore, add a progress to configure tunnel neighbour in this case.
v2: Correct format of fixes tag.
Fixes: f1df7956c11f ("nfp: flower: rework tunnel neighbour configuration") Signed-off-by: Tianyu Yuan <tianyu.yuan@corigine.com> Reviewed-by: Louis Peens <louis.peens@corigine.com> Reviewed-by: Baowen Zheng <baowen.zheng@corigine.com> Signed-off-by: Simon Horman <simon.horman@corigine.com> Link: https://lore.kernel.org/r/20220714081915.148378-1-simon.horman@corigine.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue
xenvif_rx_next_skb() is expecting the rx queue not being empty, but
in case the loop in xenvif_rx_action() is doing multiple iterations,
the availability of another skb in the rx queue is not being checked.
amdgpu: disable powerpc support for the newer display engine
The DRM_AMD_DC_DCN display engine support (Raven, Navi, and newer) has
not been building cleanly on powerpc and causes link errors due to
mixing hard- and soft-float object files:
powerpc64-linux-ld: drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o uses hard float, drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_resource.o uses soft float
powerpc64-linux-ld: failed to merge target specific data of file drivers/gpu/drm/amd/amdgpu/../display/dc/dcn31/dcn31_resource.o
[..]
and while patches are floating around, it's not exactly obvious what is
going on.
The problem bisects to commit 41b7a347bf14 ("powerpc: Book3S 64-bit
outline-only KASAN support") but that is probably more about changing
config variables than the fundamental cause.
Despite the bisection result, a more directly related commit seems to be 26f4712aedbd ("drm/amd/display: move FPU related code from dcn31 to
dml/dcn31 folder"). It's probably a combination of the two.
This has been going on since the merge window, without any final word.
So instead of blindly applying patches that may or may not be the right
thing, let's disable this for now.
As Michael Ellerman says:
"IIUIC this code was never enabled on ppc before, so disabling it seems
like a reasonable fix to get the build clean"
and once we have more actual feedback (and find any potential users) we
can always re-enable it with the patch that fixes the issues and
back-port as necessary.
Muchun Song [Wed, 13 Jul 2022 14:02:26 +0000 (22:02 +0800)]
block: fix missing blkcg_bio_issue_init
The commit 513616843d73 ("block: remove superfluous calls to
blkcg_bio_issue_init") has removed blkcg_bio_issue_init from
__bio_clone since submit_bio will override ->bi_issue.
However, __blk_queue_split is called after blkcg_bio_issue_init
(see blk_mq_submit_bio) in submit_bio. In this case, the
->bi_issue is 0. Fix it.
KVM: x86: Fully initialize 'struct kvm_lapic_irq' in kvm_pv_kick_cpu_op()
'vector' and 'trig_mode' fields of 'struct kvm_lapic_irq' are left
uninitialized in kvm_pv_kick_cpu_op(). While these fields are normally
not needed for APIC_DM_REMRD, they're still referenced by
__apic_accept_irq() for trace_kvm_apic_accept_irq(). Fully initialize
the structure to avoid consuming random stack memory.
Fixes: a183b638b61c ("KVM: x86: make apic_accept_irq tracepoint more generic") Reported-by: syzbot+d6caa905917d353f0d07@syzkaller.appspotmail.com Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220708125147.593975-1-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Israel Rukshin [Thu, 14 Jul 2022 12:42:10 +0000 (12:42 +0000)]
nvme: fix block device naming collision
The issue exists when multipath is enabled and the namespace is
shared, but all the other controller checks at nvme_is_unique_nsid()
are false. The reason for this issue is that nvme_is_unique_nsid()
returns false when is called from nvme_mpath_alloc_disk() due to an
uninitialized value of head->shared. The patch fixes it by setting
head->shared before nvme_mpath_alloc_disk() is called.
Fixes: 5974ea7ce0f9 ("nvme: allow duplicate NSIDs for private namespaces") Signed-off-by: Israel Rukshin <israelr@nvidia.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Keith Busch [Tue, 12 Jul 2022 15:16:32 +0000 (08:16 -0700)]
nvme-pci: fix freeze accounting for error handling
A reset on a live device experiencing a link error still needs to have
the queue freeze state started for the subsequent reinitialization. Skip
only the register read if the device is not present instead of bypassing
the freeze checks.
Fixes: b98235d3a471e ("nvme-pci: harden drive presence detect in nvme_dev_disable()") Reported-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Keith Busch <kbusch@kernel.org> Tested-by: Niklas Schnelle <schnelle@linux.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
Nicolas Dichtel [Wed, 13 Jul 2022 11:48:53 +0000 (13:48 +0200)]
selftests/net: test nexthop without gw
This test implement the scenario described in the commit
"ip: fix dflt addr selection for connected nexthop".
The test configures a nexthop object with an output device only (no gateway
address) and a route that uses this nexthop. The goal is to check if the
kernel selects a valid source address.
Nicolas Dichtel [Wed, 13 Jul 2022 11:48:52 +0000 (13:48 +0200)]
ip: fix dflt addr selection for connected nexthop
When a nexthop is added, without a gw address, the default scope was set
to 'host'. Thus, when a source address is selected, 127.0.0.1 may be chosen
but rejected when the route is used.
When using a route without a nexthop id, the scope can be configured in the
route, thus the problem doesn't exist.
To explain more deeply: when a user creates a nexthop, it cannot specify
the scope. To create it, the function nh_create_ipv4() calls fib_check_nh()
with scope set to 0. fib_check_nh() calls fib_check_nh_nongw() wich was
setting scope to 'host'. Then, nh_create_ipv4() calls
fib_info_update_nhc_saddr() with scope set to 'host'. The src addr is
chosen before the route is inserted.
When a 'standard' route (ie without a reference to a nexthop) is added,
fib_create_info() calls fib_info_update_nhc_saddr() with the scope set by
the user. iproute2 set the scope to 'link' by default.
Here is a way to reproduce the problem:
ip netns add foo
ip -n foo link set lo up
ip netns add bar
ip -n bar link set lo up
sleep 1
ip -n foo link add name eth0 type dummy
ip -n foo link set eth0 up
ip -n foo address add 192.168.0.1/24 dev eth0
ip -n foo link add name veth0 type veth peer name veth1 netns bar
ip -n foo link set veth0 up
ip -n bar link set veth1 up
ip -n bar address add 192.168.1.1/32 dev veth1
ip -n bar route add default dev veth1
ip -n foo nexthop add id 1 dev veth0
ip -n foo route add 192.168.1.1 nhid 1
Try to get/use the route:
> $ ip -n foo route get 192.168.1.1
> RTNETLINK answers: Invalid argument
> $ ip netns exec foo ping -c1 192.168.1.1
> ping: connect: Invalid argument
Try without nexthop group (iproute2 sets scope to 'link' by dflt):
ip -n foo route del 192.168.1.1
ip -n foo route add 192.168.1.1 dev veth0
Try to get/use the route:
> $ ip -n foo route get 192.168.1.1
> 192.168.1.1 dev veth0 src 192.168.0.1 uid 0
> cache
> $ ip netns exec foo ping -c1 192.168.1.1
> PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
> 64 bytes from 192.168.1.1: icmp_seq=1 ttl=64 time=0.039 ms
>
> --- 192.168.1.1 ping statistics ---
> 1 packets transmitted, 1 received, 0% packet loss, time 0ms
> rtt min/avg/max/mdev = 0.039/0.039/0.039/0.000 ms
CC: stable@vger.kernel.org Fixes: 597cfe4fc339 ("nexthop: Add support for IPv4 nexthops") Reported-by: Edwin Brossette <edwin.brossette@6wind.com> Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Link: https://lore.kernel.org/r/20220713114853.29406-1-nicolas.dichtel@6wind.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Vaishnav Achath [Wed, 1 Jun 2022 07:16:11 +0000 (12:46 +0530)]
spi: cadence-quadspi: Remove spi_master_put() in probe failure path
Currently the spi_master is allocated by devm_spi_alloc_master()
and devres core manages the deallocation, but in probe failure
path spi_master_put() is being handled manually which causes
"refcount underflow use-after-free" warning when probe failure happens
after allocating spi_master.
Ard Biesheuvel [Tue, 31 May 2022 08:49:24 +0000 (09:49 +0100)]
ARM: 9208/1: entry: add .ltorg directive to keep literals in range
LKP reports a build issue on Clang, related to a literal load of
__current issued through the ldr_va macro. This turns out to be due to
the fact that group relocations are disabled when CONFIG_COMPILE_TEST=y,
which means that the ldr_va macro resolves to a pair of LDR
instructions, the first one being a literal load issued too far from its
literal pool.
Due to the introduction of a couple of new uses of this macro in commit 508074607c7b95b2 ("ARM: 9195/1: entry: avoid explicit literal loads"),
the literal pools end up getting rearranged in a way that causes the
literal for __current to go out of range. Let's fix this up by putting a
.ltorg directive in a suitable place in the code.
Link: https://lore.kernel.org/all/202205290805.1vZLAr36-lkp@intel.com/ Fixes: 508074607c7b95b2 ("ARM: 9195/1: entry: avoid explicit literal loads") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Tested-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Wang Kefeng [Tue, 24 May 2022 08:03:46 +0000 (09:03 +0100)]
ARM: 9207/1: amba: fix refcount underflow if amba_device_add() fails
"ARM: 9192/1: amba: fix memory leak in amba_device_try_add()" leads
to a refcount underflow if amba_device_add() fails, which called by
of_amba_device_create(), the of_amba_device_create() already exists
the error handling, so amba_put_device() only need to be added into
amba_deferred_retry().
Fixes: 7719a68b2fa4 ("ARM: 9192/1: amba: fix memory leak in amba_device_try_add()") Reported-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Paolo Bonzini [Thu, 14 Jul 2022 11:29:57 +0000 (07:29 -0400)]
Documentation: kvm: clarify histogram units
In the case of histogram statistics, the values are always sample
counts; the unit instead applies to the bucket range. For example,
halt_poll_success_hist is a nanosecond statistic because the buckets are
for 0ns, 1ns, 2-3ns, 4-7ns etc. There isn't really any other sensible
interpretation, but clarify this anyway in the Documentation.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Thu, 14 Jul 2022 11:27:31 +0000 (07:27 -0400)]
kvm: stats: tell userspace which values are boolean
Some of the statistics values exported by KVM are always only 0 or 1.
It can be useful to export this fact to userspace so that it can track
them specially (for example by polling the value every now and then to
compute a % of time spent in a specific state).
Therefore, add "boolean value" as a new "unit". While it is not exactly
a unit, it walks and quacks like one. In particular, using the type
would be wrong because boolean values could be instantaneous or peak
values (e.g. "is the rmap allocated?") or even two-bucket histograms
(e.g. "number of posted vs. non-posted interrupt injections").
Suggested-by: Amneesh Singh <natto@weirdnatto.in> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
x86/kvm: fix FASTOP_SIZE when return thunks are enabled
The return thunk call makes the fastop functions larger, just like IBT
does. Consider a 16-byte FASTOP_SIZE when CONFIG_RETHUNK is enabled.
Otherwise, functions will be incorrectly aligned and when computing their
position for differently sized operators, they will executed in the middle
or end of a function, which may as well be an int3, leading to a crash
like:
Fixes: aa3d480315ba ("x86: Use return-thunk in asm code") Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Co-developed-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Borislav Petkov <bp@suse.de> Cc: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Message-Id: <20220713171241.184026-1-cascardo@canonical.com> Tested-by: Jack Wang <jinpu.wang@ionos.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: nVMX: Always enable TSC scaling for L2 when it was enabled for L1
Windows 10/11 guests with Hyper-V role (WSL2) enabled are observed to
hang upon boot or shortly after when a non-default TSC frequency was
set for L1. The issue is observed on a host where TSC scaling is
supported. The problem appears to be that Windows doesn't use TSC
frequency for its guests even when the feature is advertised and KVM
filters SECONDARY_EXEC_TSC_SCALING out when creating L2 controls from
L1's. This leads to L2 running with the default frequency (matching
host's) while L1 is running with an altered one.
Keep SECONDARY_EXEC_TSC_SCALING in secondary exec controls for L2 when
it was set for L1. TSC_MULTIPLIER is already correctly computed and
written by prepare_vmcs02().
aq_nic_deinit() has been called while suspending, so we don't have to call
it again on resume.
Actually, call it again leads to another hang issue when resuming from
S3.
net: atlantic: remove deep parameter on suspend/resume functions
Below commit claims that atlantic NIC requires to reset the device on pm
op, and had set the deep to true for all suspend/resume functions.
commit 1809c30b6e5a ("net: atlantic: always deep reset on pm op, fixing up my null deref regression")
So, we could remove deep parameter on suspend/resume functions without
any functional change.
When creating VFs a kernel panic can happen when calling to
efx_ef10_try_update_nic_stats_vf.
When releasing a DMA coherent buffer, sometimes, I don't know in what
specific circumstances, it has to unmap memory with vunmap. It is
disallowed to do that in IRQ context or with BH disabled. Otherwise, we
hit this line in vunmap, causing the crash:
BUG_ON(in_interrupt());
This patch reenables BH to release the buffer.
Log messages when the bug is hit:
kernel BUG at mm/vmalloc.c:2727!
invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
CPU: 6 PID: 1462 Comm: NetworkManager Kdump: loaded Tainted: G I --------- --- 5.14.0-119.el9.x86_64 #1
Hardware name: Dell Inc. PowerEdge R740/06WXJT, BIOS 2.8.2 08/27/2020
RIP: 0010:vunmap+0x2e/0x30
...skip...
Call Trace:
__iommu_dma_free+0x96/0x100
efx_nic_free_buffer+0x2b/0x40 [sfc]
efx_ef10_try_update_nic_stats_vf+0x14a/0x1c0 [sfc]
efx_ef10_update_stats_vf+0x18/0x40 [sfc]
efx_start_all+0x15e/0x1d0 [sfc]
efx_net_open+0x5a/0xe0 [sfc]
__dev_open+0xe7/0x1a0
__dev_change_flags+0x1d7/0x240
dev_change_flags+0x21/0x60
...skip...
Fixes: d778819609a2 ("sfc: DMA the VF stats only when requested") Reported-by: Ma Yuying <yuma@redhat.com> Signed-off-by: Íñigo Huguet <ihuguet@redhat.com> Acked-by: Edward Cree <ecree.xilinx@gmail.com> Link: https://lore.kernel.org/r/20220713092116.21238-1-ihuguet@redhat.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
====================
seg6: fix skb checksum for SRH encapsulation/insertion
The Linux kernel supports Segment Routing Header (SRH)
encapsulation/insertion operations by providing the capability to: i)
encapsulate a packet in an outer IPv6 header with a specified SRH; ii)
insert a specified SRH directly after the IPv6 header of the packet.
Note that the insertion operation is also referred to as 'injection'.
The two operations are respectively supported by seg6_do_srh_encap() and
seg6_do_srh_inline(), which operate on the skb associated to the packet as
needed (e.g. adding the necessary headers and initializing them, while
taking care to recalculate the skb checksum).
seg6_do_srh_encap() and seg6_do_srh_inline() do not initialize the payload
length of the IPv6 header, which is carried out by the caller functions.
However, this approach causes the corruption of the skb checksum which
needs to be updated only after initialization of headers is completed
(thanks to Paolo Abeni for detecting this issue).
The patchset fixes the skb checksum corruption by moving the IPv6 header
payload length initialization from the callers of seg6_do_srh_encap() and
seg6_do_srh_inline() directly into these functions.
This patchset is organized as follows:
- patch 1/3, seg6: fix skb checksum evaluation in SRH
encapsulation/insertion;
(* SRH encapsulation/insertion available since v4.10)
- patch 2/3, seg6: fix skb checksum in SRv6 End.B6 and End.B6.Encaps
behaviors;
(* SRv6 End.B6 and End.B6.Encaps behaviors available since v4.14)
- patch 3/3, seg6: bpf: fix skb checksum in bpf_push_seg6_encap();
(* bpf IPv6 Segment Routing helpers available since v4.18)
Andrea Mayer [Tue, 12 Jul 2022 17:58:37 +0000 (19:58 +0200)]
seg6: bpf: fix skb checksum in bpf_push_seg6_encap()
Both helper functions bpf_lwt_seg6_action() and bpf_lwt_push_encap() use
the bpf_push_seg6_encap() to encapsulate the packet in an IPv6 with Segment
Routing Header (SRH) or insert an SRH between the IPv6 header and the
payload.
To achieve this result, such helper functions rely on bpf_push_seg6_encap()
which, in turn, leverages seg6_do_srh_{encap,inline}() to perform the
required operation (i.e. encap/inline).
This patch removes the initialization of the IPv6 header payload length
from bpf_push_seg6_encap(), as it is now handled properly by
seg6_do_srh_{encap,inline}() to prevent corruption of the skb checksum.
Fixes: fe94cc290f53 ("bpf: Add IPv6 Segment Routing helpers") Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Andrea Mayer [Tue, 12 Jul 2022 17:58:36 +0000 (19:58 +0200)]
seg6: fix skb checksum in SRv6 End.B6 and End.B6.Encaps behaviors
The SRv6 End.B6 and End.B6.Encaps behaviors rely on functions
seg6_do_srh_{encap,inline}() to, respectively: i) encapsulate the
packet within an outer IPv6 header with the specified Segment Routing
Header (SRH); ii) insert the specified SRH directly after the IPv6
header of the packet.
This patch removes the initialization of the IPv6 header payload length
from the input_action_end_b6{_encap}() functions, as it is now handled
properly by seg6_do_srh_{encap,inline}() to avoid corruption of the skb
checksum.
Fixes: 140f04c33bbc ("ipv6: sr: implement several seg6local actions") Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Andrea Mayer [Tue, 12 Jul 2022 17:58:35 +0000 (19:58 +0200)]
seg6: fix skb checksum evaluation in SRH encapsulation/insertion
Support for SRH encapsulation and insertion was introduced with
commit 6c8702c60b88 ("ipv6: sr: add support for SRH encapsulation and
injection with lwtunnels"), through the seg6_do_srh_encap() and
seg6_do_srh_inline() functions, respectively.
The former encapsulates the packet in an outer IPv6 header along with
the SRH, while the latter inserts the SRH between the IPv6 header and
the payload. Then, the headers are initialized/updated according to the
operating mode (i.e., encap/inline).
Finally, the skb checksum is calculated to reflect the changes applied
to the headers.
The IPv6 payload length ('payload_len') is not initialized
within seg6_do_srh_{inline,encap}() but is deferred in seg6_do_srh(), i.e.
the caller of seg6_do_srh_{inline,encap}().
However, this operation invalidates the skb checksum, since the
'payload_len' is updated only after the checksum is evaluated.
To solve this issue, the initialization of the IPv6 payload length is
moved from seg6_do_srh() directly into the seg6_do_srh_{inline,encap}()
functions and before the skb checksum update takes place.
Fixes: 6c8702c60b88 ("ipv6: sr: add support for SRH encapsulation and injection with lwtunnels") Reported-by: Paolo Abeni <pabeni@redhat.com> Link: https://lore.kernel.org/all/20220705190727.69d532417be7438b15404ee1@uniroma2.it Signed-off-by: Andrea Mayer <andrea.mayer@uniroma2.it> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Xiubo Li [Mon, 11 Jul 2022 04:11:21 +0000 (12:11 +0800)]
netfs: do not unlock and put the folio twice
check_write_begin() will unlock and put the folio when return
non-zero. So we should avoid unlocking and putting it twice in
netfs layer.
Change the way ->check_write_begin() works in the following two ways:
(1) Pass it a pointer to the folio pointer, allowing it to unlock and put
the folio prior to doing the stuff it wants to do, provided it clears
the folio pointer.
(2) Change the return values such that 0 with folio pointer set means
continue, 0 with folio pointer cleared means re-get and all error
codes indicating an error (no special treatment for -EAGAIN).
[ bagasdotme: use Sphinx code text syntax for *foliop pointer ]
x86/entry: Remove UNTRAIN_RET from native_irq_return_ldt
UNTRAIN_RET is not needed in native_irq_return_ldt because RET
untraining has already been done at this point.
In addition, when the RETBleed mitigation is IBPB, UNTRAIN_RET clobbers
several registers (AX, CX, DX) so here it trashes user values which are
in these registers.
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