Running the test currently fails on non-SMP systems, despite being
enabled by default. This means that running the test with:
./tools/testing/kunit/kunit.py run --arch x86_64 hw_breakpoint
results in every hw_breakpoint test failing with:
# test_one_cpu: failed to initialize: -22
not ok 1 - test_one_cpu
Instead, use kunit_skip(), which will mark the test as skipped, and give
a more comprehensible message:
ok 1 - test_one_cpu # SKIP not enough cpus
This makes it more obvious that the test is not suited to the test
environment, and so wasn't run, rather than having run and failed.
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Acked-by: Marco Elver <elver@google.com>
Link: https://lore.kernel.org/r/20221026141040.1609203-1-davidgow@google.com
A use-after-free bugfix in the smscufx driver and various minor
error path fixes, smaller build fixes, sysfs fixes and
typos in comments in the stifb, sisfb, da8xxfb, xilinxfb, sm501fb,
gbefb and cyber2000fb drivers.
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Merge tag 'fbdev-for-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes from Helge Deller:
"A use-after-free bugfix in the smscufx driver and various minor error
path fixes, smaller build fixes, sysfs fixes and typos in comments in
the stifb, sisfb, da8xxfb, xilinxfb, sm501fb, gbefb and cyber2000fb
drivers"
* tag 'fbdev-for-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbdev: cyber2000fb: fix missing pci_disable_device()
fbdev: sisfb: use explicitly signed char
fbdev: smscufx: Fix several use-after-free bugs
fbdev: xilinxfb: Make xilinxfb_release() return void
fbdev: sisfb: fix repeated word in comment
fbdev: gbefb: Convert sysfs snprintf to sysfs_emit
fbdev: sm501fb: Convert sysfs snprintf to sysfs_emit
fbdev: stifb: Fall back to cfb_fillrect() on 32-bit HCRX cards
fbdev: da8xx-fb: Fix error handling in .remove()
fbdev: MIPS supports iomem addresses
Here are some small driver fixes for 6.1-rc3. They include:
- iio driver bugfixes
- counter driver bugfixes
- coresight bugfixes, including a revert and then a second
fix to get it right.
All of these have been in linux-next with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc fixes from Greg KH:
"Some small driver fixes for 6.1-rc3. They include:
- iio driver bugfixes
- counter driver bugfixes
- coresight bugfixes, including a revert and then a second fix to get
it right.
All of these have been in linux-next with no reported problems"
* tag 'char-misc-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (21 commits)
misc: sgi-gru: use explicitly signed char
coresight: cti: Fix hang in cti_disable_hw()
Revert "coresight: cti: Fix hang in cti_disable_hw()"
counter: 104-quad-8: Fix race getting function mode and direction
counter: microchip-tcb-capture: Handle Signal1 read and Synapse
coresight: cti: Fix hang in cti_disable_hw()
coresight: Fix possible deadlock with lock dependency
counter: ti-ecap-capture: fix IS_ERR() vs NULL check
counter: Reduce DEFINE_COUNTER_ARRAY_POLARITY() to defining counter_array
iio: bmc150-accel-core: Fix unsafe buffer attributes
iio: adxl367: Fix unsafe buffer attributes
iio: adxl372: Fix unsafe buffer attributes
iio: at91-sama5d2_adc: Fix unsafe buffer attributes
iio: temperature: ltc2983: allocate iio channels once
tools: iio: iio_utils: fix digit calculation
iio: adc: stm32-adc: fix channel sampling time init
iio: adc: mcp3911: mask out device ID in debug prints
iio: adc: mcp3911: use correct id bits
iio: adc: mcp3911: return proper error code on failure to allocate trigger
iio: adc: mcp3911: fix sizeof() vs ARRAY_SIZE() bug
...
Here are a few small USB fixes for 6.1-rc3. Include in here are:
- MAINTAINERS update, including a big one for the USB gadget
subsystem. Many thanks to Felipe for all of the years of hard
work he has done on this codebase, it was greatly appreciated.
- dwc3 driver fixes for reported problems.
- xhci driver fixes for reported problems.
- typec driver fixes for minor issues
- uvc gadget driver change, and then revert as it wasn't
relevant for 6.1-final, as it is a new feature and people are
still reviewing and modifying it.
All of these have been in the linux-next tree with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"A few small USB fixes for 6.1-rc3. Include in here are:
- MAINTAINERS update, including a big one for the USB gadget
subsystem. Many thanks to Felipe for all of the years of hard work
he has done on this codebase, it was greatly appreciated.
- dwc3 driver fixes for reported problems.
- xhci driver fixes for reported problems.
- typec driver fixes for minor issues
- uvc gadget driver change, and then revert as it wasn't relevant for
6.1-final, as it is a new feature and people are still reviewing
and modifying it.
All of these have been in the linux-next tree with no reported issues"
* tag 'usb-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usb: dwc3: gadget: Don't set IMI for no_interrupt
usb: dwc3: gadget: Stop processing more requests on IMI
Revert "usb: gadget: uvc: limit isoc_sg to super speed gadgets"
xhci: Remove device endpoints from bandwidth list when freeing the device
xhci-pci: Set runtime PM as default policy on all xHC 1.2 or later devices
xhci: Add quirk to reset host back to default state at shutdown
usb: xhci: add XHCI_SPURIOUS_SUCCESS to ASM1042 despite being a V0.96 controller
usb: dwc3: st: Rely on child's compatible instead of name
usb: gadget: uvc: limit isoc_sg to super speed gadgets
usb: bdc: change state when port disconnected
usb: typec: ucsi: acpi: Implement resume callback
usb: typec: ucsi: Check the connection on resume
usb: gadget: aspeed: Fix probe regression
usb: gadget: uvc: fix sg handling during video encode
usb: gadget: uvc: fix sg handling in error case
usb: gadget: uvc: fix dropped frame after missed isoc
usb: dwc3: gadget: Don't delay End Transfer on delayed_status
usb: dwc3: Don't switch OTG -> peripheral if extcon is present
MAINTAINERS: Update maintainers for broadcom USB
MAINTAINERS: move USB gadget and phy entries under the main USB entry
- convert gpio-tegra to using an immutable irqchip
- MAINTAINERS update
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Merge tag 'gpio-fixes-for-v6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- convert gpio-tegra to using an immutable irqchip
- MAINTAINERS update
* tag 'gpio-fixes-for-v6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
MAINTAINERS: Change myself to a maintainer
gpio: tegra: Convert to immutable irq chip
- Add Alder and Raptor Lakes support to RAPL
- Make sure raw sample data is output with tracepoints
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Merge tag 'perf_urgent_for_v6.1_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Borislav Petkov:
- Rename a perf memory level event define to denote it is of CXL type
- Add Alder and Raptor Lakes support to RAPL
- Make sure raw sample data is output with tracepoints
* tag 'perf_urgent_for_v6.1_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/mem: Rename PERF_MEM_LVLNUM_EXTN_MEM to PERF_MEM_LVLNUM_CXL
perf/x86/rapl: Add support for Intel Raptor Lake
perf/x86/rapl: Add support for Intel AlderLake-N
perf: Fix missing raw data on tracepoint events
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Merge tag '6.1-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs fixes from Steve French:
- use after free fix for reconnect race
- two memory leak fixes
* tag '6.1-rc2-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
cifs: fix use-after-free caused by invalid pointer `hostname`
cifs: Fix pages leak when writedata alloc failed in cifs_write_from_iter()
cifs: Fix pages array leak when writedata alloc failed in cifs_writedata_alloc()
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Merge tag 'random-6.1-rc3-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
Pull random number generator fix from Jason Donenfeld:
"One fix from Jean-Philippe Brucker, addressing a regression in which
early boot code on ARM64 would use the non-_early variant of the
arch_get_random family of functions, resulting in the architectural
random number generator appearing unavailable during that early phase
of boot.
The fix simply changes arch_get_random*() to arch_get_random*_early().
This distinction between these two functions is a bit of an old wart
I'm not a fan of, and for 6.2 I'll see if I can make obsolete the
_early variant, so that one function does the right thing in all
contexts without overhead"
* tag 'random-6.1-rc3-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
random: use arch_get_random*_early() in random_init()
21 small fixes, all in drivers. Some of these arrived during the
merge window and got held over to make sure of testing on the -rc
tree. The biggest change is for Standards conformance in the target
driver, closely followed by a set of bug fixes in megaraid_sas.
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:
"Varions small fixes, all in drivers.
Some of these arrived during the merge window and got held over to
make sure of testing on the -rc tree.
The biggest change is for standards conformance in the target driver,
closely followed by a set of bug fixes in megaraid_sas"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (21 commits)
scsi: ufs: core: Fix typo in comment
scsi: mpi3mr: Select CONFIG_SCSI_SAS_ATTRS
scsi: ufs: core: Fix typo for register name in comments
scsi: pm80xx: Display proc_name in sysfs
scsi: ufs: core: Fix the error log in ufshcd_query_flag_retry()
scsi: ufs: core: Remove unneeded casts from void *
scsi: lpfc: Fix spelling mistake "unsolicted" -> "unsolicited"
scsi: qla2xxx: Use transport-defined speed mask for supported_speeds
scsi: target: iblock: Fold iblock_emulate_read_cap_with_block_size() into iblock_get_blocks()
scsi: qla2xxx: Fix serialization of DCBX TLV data request
scsi: ufs: qcom: Remove redundant dev_err() call
scsi: megaraid_sas: Move megasas_dbg_lvl init to megasas_init()
scsi: megaraid_sas: Remove unnecessary memset()
scsi: megaraid_sas: Simplify megasas_update_device_list
scsi: megaraid_sas: Correct an error message
scsi: megaraid_sas: Correct value passed to scsi_device_lookup()
scsi: target: core: UA on all LUNs after reset
scsi: target: core: New key must be used for moved PR
scsi: target: core: Abort all preempted regs if requested
scsi: target: core: Fix memory leak in preempt_and_abort
...
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Merge tag 'block-6.1-2022-10-28' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
- NVMe pull request via Christoph:
- make the multipath dma alignment match the non-multipath one
(Keith Busch)
- fix a bogus use of sg_init_marker() (Nam Cao)
- fix circulr locking in nvme-tcp (Sagi Grimberg)
- Initialization fix for requests allocated via the special hw queue
allocator (John)
- Fix for a regression added in this release with the batched
completions of end_io backed requests (Ming)
- Error handling leak fix for rbd (Yang)
- Error handling leak fix for add_disk() failure (Yu)
* tag 'block-6.1-2022-10-28' of git://git.kernel.dk/linux:
blk-mq: Properly init requests from blk_mq_alloc_request_hctx()
blk-mq: don't add non-pt request with ->end_io to batch
rbd: fix possible memory leak in rbd_sysfs_init()
nvme-multipath: set queue dma alignment to 3
nvme-tcp: fix possible circular locking when deleting a controller under memory pressure
nvme-tcp: replace sg_init_marker() with sg_init_table()
block: fix memory leak for elevator on add_disk failure
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Merge tag 'io_uring-6.1-2022-10-28' of git://git.kernel.dk/linux
Pull io_uring fix from Jens Axboe:
"Just a fix for a locking regression introduced with the deferred
task_work running from this merge window"
* tag 'io_uring-6.1-2022-10-28' of git://git.kernel.dk/linux:
io_uring: unlock if __io_run_local_work locked inside
io_uring: use io_run_local_work_locked helper
Eight fix pre-6.0 bugs and the remainder address issues which were
introduced in the 6.1-rc merge cycle, or address issues which aren't
considered sufficiently serious to warrant a -stable backport.
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Merge tag 'mm-hotfixes-stable-2022-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc hotfixes from Andrew Morton:
"Eight fix pre-6.0 bugs and the remainder address issues which were
introduced in the 6.1-rc merge cycle, or address issues which aren't
considered sufficiently serious to warrant a -stable backport"
* tag 'mm-hotfixes-stable-2022-10-28' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (23 commits)
mm: multi-gen LRU: move lru_gen_add_mm() out of IRQ-off region
lib: maple_tree: remove unneeded initialization in mtree_range_walk()
mmap: fix remap_file_pages() regression
mm/shmem: ensure proper fallback if page faults
mm/userfaultfd: replace kmap/kmap_atomic() with kmap_local_page()
x86: fortify: kmsan: fix KMSAN fortify builds
x86: asm: make sure __put_user_size() evaluates pointer once
Kconfig.debug: disable CONFIG_FRAME_WARN for KMSAN by default
x86/purgatory: disable KMSAN instrumentation
mm: kmsan: export kmsan_copy_page_meta()
mm: migrate: fix return value if all subpages of THPs are migrated successfully
mm/uffd: fix vma check on userfault for wp
mm: prep_compound_tail() clear page->private
mm,madvise,hugetlb: fix unexpected data loss with MADV_DONTNEED on hugetlbfs
mm/page_isolation: fix clang deadcode warning
fs/ext4/super.c: remove unused `deprecated_msg'
ipc/msg.c: fix percpu_counter use after free
memory tier, sysfs: rename attribute "nodes" to "nodelist"
MAINTAINERS: git://github.com -> https://github.com for nilfs2
mm/kmemleak: prevent soft lockup in kmemleak_scan()'s object iteration loops
...
- Fix a case of rescheduling with user access unlocked, when preempt is enabled.
- A follow-up fix for a recent fix, which could lead to IRQ state assertions firing
incorrectly.
- Two fixes for lockdep warnings seen when using kfence with the Hash MMU.
- Two fixes for preempt warnings seen when using the Hash MMU.
- Two fixes for the VAS coprocessor mechanism used on pseries.
- Prevent building some of our older KVM backends when CONTEXT_TRACKING_USER is enabled,
as it's known to cause crashes.
- A couple of fixes for issues seen with PMU NMIs.
Thanks to: Nicholas Piggin, Guenter Roeck, Frederic Barrat Haren Myneni, Sachin Sant,
Samuel Holland.
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Merge tag 'powerpc-6.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix a case of rescheduling with user access unlocked, when preempt is
enabled.
- A follow-up fix for a recent fix, which could lead to IRQ state
assertions firing incorrectly.
- Two fixes for lockdep warnings seen when using kfence with the Hash
MMU.
- Two fixes for preempt warnings seen when using the Hash MMU.
- Two fixes for the VAS coprocessor mechanism used on pseries.
- Prevent building some of our older KVM backends when
CONTEXT_TRACKING_USER is enabled, as it's known to cause crashes.
- A couple of fixes for issues seen with PMU NMIs.
Thanks to Nicholas Piggin, Guenter Roeck, Frederic Barrat Haren Myneni,
Sachin Sant, and Samuel Holland.
* tag 'powerpc-6.1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s/interrupt: Fix clear of PACA_IRQS_HARD_DIS when returning to soft-masked context
powerpc/64s/interrupt: Perf NMI should not take normal exit path
powerpc/64/interrupt: Prevent NMI PMI causing a dangerous warning
KVM: PPC: BookS PR-KVM and BookE do not support context tracking
powerpc: Fix reschedule bug in KUAP-unlocked user copy
powerpc/64s: Fix hash__change_memory_range preemption warning
powerpc/64s: Disable preemption in hash lazy mmu mode
powerpc/64s: make linear_map_hash_lock a raw spinlock
powerpc/64s: make HPTE lock and native_tlbie_lock irq-safe
powerpc/64s: Add lockdep for HPTE lock
powerpc/pseries: Use lparcfg to reconfig VAS windows for DLPAR CPU
powerpc/pseries/vas: Add VAS IRQ primary handler
Currently the return value of 'sub_driver->init' is not checked. If
sparse_keymap_setup() called in the init function fails, 'generic_
inputdev' is freed, then it will lead a UAF when using it in generic_
acpi_laptop_init(). Fix it by checking the return value and setting
generic_inputdev to NULL after free, so as to avoid double free it.
The error code in generic_subdriver_init() is always negative, so the
return of generic_subdriver_init() can be simplified.
Fixes: 6246ed0911 ("LoongArch: Add ACPI-based generic laptop driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Some laptops don't support SW_LID, but still have backlight control,
move backlight resuming before SW_LID event handling so as to avoid
backlight mistake due to early return.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Not all compilers support declare variables in switch-case, so move
declarations to the beginning of a function. Otherwise we may get such
build errors:
arch/loongarch/net/bpf_jit.c: In function ‘emit_atomic’:
arch/loongarch/net/bpf_jit.c:362:3: error: a label can only be part of a statement and a declaration is not a statement
u8 r0 = regmap[BPF_REG_0];
^~
arch/loongarch/net/bpf_jit.c: In function ‘build_insn’:
arch/loongarch/net/bpf_jit.c:727:3: error: a label can only be part of a statement and a declaration is not a statement
u8 t7 = -1;
^~
arch/loongarch/net/bpf_jit.c:778:3: error: a label can only be part of a statement and a declaration is not a statement
int ret;
^~~
arch/loongarch/net/bpf_jit.c:779:3: error: expected expression before ‘u64’
u64 func_addr;
^~~
arch/loongarch/net/bpf_jit.c:780:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
bool func_addr_fixed;
^~~~
arch/loongarch/net/bpf_jit.c:784:11: error: ‘func_addr’ undeclared (first use in this function); did you mean ‘in_addr’?
&func_addr, &func_addr_fixed);
^~~~~~~~~
in_addr
arch/loongarch/net/bpf_jit.c:784:11: note: each undeclared identifier is reported only once for each function it appears in
arch/loongarch/net/bpf_jit.c:814:3: error: a label can only be part of a statement and a declaration is not a statement
u64 imm64 = (u64)(insn + 1)->imm << 32 | (u32)insn->imm;
^~~
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Eliminate the following coccicheck warning:
./arch/loongarch/include/asm/ptrace.h:32:15-21: WARNING use flexible-array member instead
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Yushan Zhou <katrinzhou@tencent.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
The current LoongArch kernel stack is padded as if obeying the MIPS o32
calling convention (32 bytes), signifying the port's MIPS lineage but no
longer making sense. Remove the padding for clarity.
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Jinyang He <hejinyang@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
* A fix for a build warning in the jump_label code.
* One of the git://github -> https://github cleanups, for the SiFive
drivers.
* A fix for the kasan initialization code, this still likely warrants
some cleanups but that's a bigger problem and at least this fixes the
crashes in the short term.
* A pair of fixes for extension support detection on mixed LLVM/GNU
toolchains.
* A fix for a runtime warning in the /proc/cpuinfo code.
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Merge tag 'riscv-for-linus-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix for a build warning in the jump_label code
- One of the git://github -> https://github cleanups, for the SiFive
drivers
- A fix for the kasan initialization code, this still likely warrants
some cleanups but that's a bigger problem and at least this fixes the
crashes in the short term
- A pair of fixes for extension support detection on mixed LLVM/GNU
toolchains
- A fix for a runtime warning in the /proc/cpuinfo code
* tag 'riscv-for-linus-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: Fix /proc/cpuinfo cpumask warning
riscv: fix detection of toolchain Zihintpause support
riscv: fix detection of toolchain Zicbom support
riscv: mm: add missing memcpy in kasan_init
MAINTAINERS: git://github.com -> https://github.com for sifive
riscv: jump_label: mark arguments as const to satisfy asm constraints
- Fix the documentation of the *_match_string() family of functions to
properly cover the return value (Andy Shevchenko).
- Fix a possible integer overflow during multiplication in the ACPI
PCC code (Manank Patel).
- Make the ACPI device resources code skip IRQ override on Asus
Vivobook S5602ZA (Tamim Khan).
- Add LATT2021 to the list of device IDs that are ignored when
returned by _DEP, because there are no drivers for them in the
kernel and no plans to add such drivers (Hans de Goede).
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Merge tag 'acpi-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and device properties fixes from Rafael Wysocki:
"These fix device properties documentation and the ACPI PCC code, add a
new IRQ override quirk for resource handling and add one more item to
the list of device IDs to be ignored when returned by _DEP.
Specifics:
- Fix the documentation of the *_match_string() family of functions
to properly cover the return value (Andy Shevchenko)
- Fix a possible integer overflow during multiplication in the ACPI
PCC code (Manank Patel)
- Make the ACPI device resources code skip IRQ override on Asus
Vivobook S5602ZA (Tamim Khan)
- Add LATT2021 to the list of device IDs that are ignored when
returned by _DEP, because there are no drivers for them in the
kernel and no plans to add such drivers (Hans de Goede)"
* tag 'acpi-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: scan: Add LATT2021 to acpi_ignore_dep_ids[]
ACPI: resource: Skip IRQ override on Asus Vivobook S5602ZA
ACPI: PCC: Fix unintentional integer overflow
device property: Fix documentation for *_match_string() APIs
- Make intel_pstate use what is known about the hardware instead of
relying on information from the platform firmware (ACPI CPPC in
particular) to establish the relationship between the HWP CPU
performance levels and frequencies on all hybrid platforms
available to date (Rafael Wysocki).
- Allow hybrid sleep to use suspend-to-idle as a system suspend method
if it is the current suspend method of choice (Mario Limonciello).
- Fix handling of unavailable/disabled idle states in the generic
power domains code (Sudeep Holla).
- Update the pm-graph suite of utilities to version 5.10 which is
fixes-mostly and does not add any new features (Todd Brandt).
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Merge tag 'pm-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These make the intel_pstate driver work as expected on all hybrid
platforms to date (regardless of possible platform firmware issues),
fix hybrid sleep on systems using suspend-to-idle by default, make the
generic power domains code handle disabled idle states properly and
update pm-graph.
Specifics:
- Make intel_pstate use what is known about the hardware instead of
relying on information from the platform firmware (ACPI CPPC in
particular) to establish the relationship between the HWP CPU
performance levels and frequencies on all hybrid platforms
available to date (Rafael Wysocki)
- Allow hybrid sleep to use suspend-to-idle as a system suspend
method if it is the current suspend method of choice (Mario
Limonciello)
- Fix handling of unavailable/disabled idle states in the generic
power domains code (Sudeep Holla)
- Update the pm-graph suite of utilities to version 5.10 which is
fixes-mostly and does not add any new features (Todd Brandt)"
* tag 'pm-6.1-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: domains: Fix handling of unavailable/disabled idle states
pm-graph v5.10
cpufreq: intel_pstate: hybrid: Use known scaling factor for P-cores
cpufreq: intel_pstate: Read all MSRs on the target CPU
PM: hibernate: Allow hybrid sleep to work with s2idle
While reworking the archrandom handling, commit d349ab99ee ("random:
handle archrandom with multiple longs") switched to the non-early
archrandom helpers in random_init(), which broke initialization of the
entropy pool from the arm64 random generator.
Indeed at that point the arm64 CPU features, which verify that all CPUs
have compatible capabilities, are not finalized so arch_get_random_seed_longs()
is unsuccessful. Instead random_init() should use the _early functions,
which check only the boot CPU on arm64. On other architectures the
_early functions directly call the normal ones.
Fixes: d349ab99ee ("random: handle archrandom with multiple longs")
Cc: stable@vger.kernel.org
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
lru_gen_add_mm() has been added within an IRQ-off region in the commit
mentioned below. The other invocations of lru_gen_add_mm() are not within
an IRQ-off region.
The invocation within IRQ-off region is problematic on PREEMPT_RT because
the function is using a spin_lock_t which must not be used within
IRQ-disabled regions.
The other invocations of lru_gen_add_mm() occur while
task_struct::alloc_lock is acquired. Move lru_gen_add_mm() after
interrupts are enabled and before task_unlock().
Link: https://lkml.kernel.org/r/20221026134830.711887-1-bigeasy@linutronix.de
Fixes: bd74fdaea1 ("mm: multi-gen LRU: support page table walks")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Yu Zhao <yuzhao@google.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "Eric W . Biederman" <ebiederm@xmission.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Before the do-while loop in mtree_range_walk(), the variables next, min,
max need to be initialized. The variables last, prev_min and prev_max are
set within the loop body before they are eventually used after exiting the
loop body.
As it is a do-while loop, the loop body is executed at least once, so the
variables last, prev_min and prev_max do not need to be initialized before
the loop body.
Remove unneeded initialization of last and prev_min.
The needless initialization was reported by clang-analyzer as Dead Stores.
As the compiler already identifies these assignments as unneeded, it
optimizes the assignments away. Hence:
No functional change. No change in object code.
Link: https://lkml.kernel.org/r/20221026120029.12555-2-lukas.bulwahn@gmail.com
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
When using the VMA iterator, the final execution will set the variable
'next' to NULL which causes the function to fail out. Restore the break
in the loop to exit the VMA iterator early without clearing NULL fixes the
issue.
Link: https://lore.kernel.org/lkml/29344.1666681759@jrobl/
Link: https://lkml.kernel.org/r/20221025161222.2634030-1-Liam.Howlett@oracle.com
Fixes: 763ecb0350 (mm: remove the vma linked list)
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reported-by: "J. R. Okajima" <hooanon05g@gmail.com>
Tested-by: "J. R. Okajima" <hooanon05g@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The kernel test robot flagged a recursive lock as a result of a conversion
from kmap_atomic() to kmap_local_folio()[Link]
The cause was due to the code depending on the kmap_atomic() side effect
of disabling page faults. In that case the code expects the fault to fail
and take the fallback case.
git archaeology implied that the recursion may not be an actual bug.[1]
However, depending on the implementation of the mmap_lock and the
condition of the call there may still be a deadlock.[2] So this is not
purely a lockdep issue. Considering a single threaded call stack there
are 3 options.
1) Different mm's are in play (no issue)
2) Readlock implementation is recursive and same mm is in play
(no issue)
3) Readlock implementation is _not_ recursive (issue)
The mmap_lock is recursive so with a single thread there is no issue.
However, Matthew pointed out a deadlock scenario when you consider
additional process' and threads thusly.
"The readlock implementation is only recursive if nobody else has taken a
write lock. If you have a multithreaded process, one of the other threads
can call mmap() and that will prevent recursion (due to fairness). Even
if it's a different process that you're trying to acquire the mmap read
lock on, you can still get into a deadly embrace. eg:
process A thread 1 takes read lock on own mmap_lock
process A thread 2 calls mmap, blocks taking write lock
process B thread 1 takes page fault, read lock on own mmap lock
process B thread 2 calls mmap, blocks taking write lock
process A thread 1 blocks taking read lock on process B
process B thread 1 blocks taking read lock on process A
Now all four threads are blocked waiting for each other."
Regardless using pagefault_disable() ensures that no matter what locking
implementation is used a deadlock will not occur. Add an explicit
pagefault_disable() and a big comment to explain this for future souls
looking at this code.
[1] https://lore.kernel.org/all/Y1MymJ%2FINb45AdaY@iweiny-desk3/
[2] https://lore.kernel.org/lkml/Y1bXBtGTCym77%2FoD@casper.infradead.org/
Link: https://lkml.kernel.org/r/20221025220108.2366043-1-ira.weiny@intel.com
Link: https://lore.kernel.org/r/202210211215.9dc6efb5-yujie.liu@intel.com
Fixes: 7a7256d5f5 ("shmem: convert shmem_mfill_atomic_pte() to use a folio")
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Reported-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reported-by: kernel test robot <yujie.liu@intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Peter Xu <peterx@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
kmap() and kmap_atomic() are being deprecated in favor of
kmap_local_page() which is appropriate for any thread local context.[1]
A recent locking bug report with userfaultfd showed that the conversion of
the kmap_atomic()'s in those code flows requires care with regard to the
prevention of deadlock.[2]
git archaeology implied that the recursion may not be an actual bug.[3]
However, depending on the implementation of the mmap_lock and the
condition of the call there may still be a deadlock.[4] So this is not
purely a lockdep issue. Considering a single threaded call stack there
are 3 options.
1) Different mm's are in play (no issue)
2) Readlock implementation is recursive and same mm is in play
(no issue)
3) Readlock implementation is _not_ recursive (issue)
The mmap_lock is recursive so with a single thread there is no issue.
However, Matthew pointed out a deadlock scenario when you consider
additional process' and threads thusly.
"The readlock implementation is only recursive if nobody else has taken a
write lock. If you have a multithreaded process, one of the other threads
can call mmap() and that will prevent recursion (due to fairness). Even
if it's a different process that you're trying to acquire the mmap read
lock on, you can still get into a deadly embrace. eg:
process A thread 1 takes read lock on own mmap_lock
process A thread 2 calls mmap, blocks taking write lock
process B thread 1 takes page fault, read lock on own mmap lock
process B thread 2 calls mmap, blocks taking write lock
process A thread 1 blocks taking read lock on process B
process B thread 1 blocks taking read lock on process A
Now all four threads are blocked waiting for each other."
Regardless using pagefault_disable() ensures that no matter what locking
implementation is used a deadlock will not occur.
Complete kmap conversion in userfaultfd by replacing the kmap() and
kmap_atomic() calls with kmap_local_page(). When replacing the
kmap_atomic() call ensure page faults continue to be disabled to support
the correct fall back behavior and add a comment to inform future souls of
the requirement.
[1] https://lore.kernel.org/all/20220813220034.806698-1-ira.weiny@intel.com/
[2] https://lore.kernel.org/all/Y1Mh2S7fUGQ%2FiKFR@iweiny-desk3/
[3] https://lore.kernel.org/all/Y1MymJ%2FINb45AdaY@iweiny-desk3/
[4] https://lore.kernel.org/lkml/Y1bXBtGTCym77%2FoD@casper.infradead.org/
[ira.weiny@intel.com: v2]
Link: https://lkml.kernel.org/r/20221025220136.2366143-1-ira.weiny@intel.com
Link: https://lkml.kernel.org/r/20221024043452.1491677-1-ira.weiny@intel.com
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Ensure that KMSAN builds replace memset/memcpy/memmove calls with the
respective __msan_XXX functions, and that none of the macros are redefined
twice. This should allow building kernel with both CONFIG_KMSAN and
CONFIG_FORTIFY_SOURCE.
Link: https://lkml.kernel.org/r/20221024212144.2852069-5-glider@google.com
Link: https://github.com/google/kmsan/issues/89
Signed-off-by: Alexander Potapenko <glider@google.com>
Reported-by: Tamas K Lengyel <tamas.lengyel@zentific.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
User access macros must ensure their arguments are evaluated only once if
they are used more than once in the macro body. Adding
instrument_put_user() to __put_user_size() resulted in double evaluation
of the `ptr` argument, which led to correctness issues when performing
e.g. unsafe_put_user(..., p++, ...).
To fix those issues, evaluate the `ptr` argument of __put_user_size() at
the beginning of the macro.
Link: https://lkml.kernel.org/r/20221024212144.2852069-4-glider@google.com
Fixes: 888f84a6da ("x86: asm: instrument usercopy in get_user() and put_user()")
Signed-off-by: Alexander Potapenko <glider@google.com>
Reported-by: youling257 <youling257@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
KMSAN adds a lot of instrumentation to the code, which results in
increased stack usage (up to 2048 bytes and more in some cases). It's
hard to predict how big the stack frames can be, so we disable the
warnings for KMSAN instead.
Link: https://lkml.kernel.org/r/20221024212144.2852069-3-glider@google.com
Link: https://github.com/google/kmsan/issues/89
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The stand-alone purgatory.ro does not contain the KMSAN runtime, therefore
it can't be built with KMSAN compiler instrumentation.
Link: https://lkml.kernel.org/r/20221024212144.2852069-2-glider@google.com
Link: https://github.com/google/kmsan/issues/89
Signed-off-by: Alexander Potapenko <glider@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
During THP migration, if THPs are not migrated but they are split and all
subpages are migrated successfully, migrate_pages() will still return the
number of THP pages that were not migrated. This will confuse the callers
of migrate_pages(). For example, the longterm pinning will failed though
all pages are migrated successfully.
Thus we should return 0 to indicate that all pages are migrated in this
case
Link: https://lkml.kernel.org/r/de386aa864be9158d2f3b344091419ea7c38b2f7.1666599848.git.baolin.wang@linux.alibaba.com
Fixes: b5bade978e ("mm: migrate: fix the return value of migrate_pages()")
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Alistair Popple <apopple@nvidia.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
We used to have a report that pte-marker code can be reached even when
uffd-wp is not compiled in for file memories, here:
https://lore.kernel.org/all/YzeR+R6b4bwBlBHh@x1n/T/#u
I just got time to revisit this and found that the root cause is we simply
messed up with the vma check, so that for !PTE_MARKER_UFFD_WP system, we
will allow UFFDIO_REGISTER of MINOR & WP upon shmem as the check was
wrong:
if (vm_flags & VM_UFFD_MINOR)
return is_vm_hugetlb_page(vma) || vma_is_shmem(vma);
Where we'll allow anything to pass on shmem as long as minor mode is
requested.
Axel did it right when introducing minor mode but I messed it up in
b1f9e87686 when moving code around. Fix it.
Link: https://lkml.kernel.org/r/20221024193336.1233616-1-peterx@redhat.com
Link: https://lkml.kernel.org/r/20221024193336.1233616-2-peterx@redhat.com
Fixes: b1f9e87686 ("mm/uffd: enable write protection for shmem & hugetlbfs")
Signed-off-by: Peter Xu <peterx@redhat.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Nadav Amit <nadav.amit@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Although page allocation always clears page->private in the first page or
head page of an allocation, it has never made a point of clearing
page->private in the tails (though 0 is often what is already there).
But now commit 71e2d666ef ("mm/huge_memory: do not clobber swp_entry_t
during THP split") issues a warning when page_tail->private is found to be
non-0 (unless it's swapcache).
Change that warning to dump page_tail (which also dumps head), instead of
just the head: so far we have seen dead000000000122, dead000000000003,
dead000000000001 or 0000000000000002 in the raw output for tail private.
We could just delete the warning, but today's consensus appears to want
page->private to be 0, unless there's a good reason for it to be set: so
now clear it in prep_compound_tail() (more general than just for THP; but
not for high order allocation, which makes no pass down the tails).
Link: https://lkml.kernel.org/r/1c4233bb-4e4d-5969-fbd4-96604268a285@google.com
Fixes: 71e2d666ef ("mm/huge_memory: do not clobber swp_entry_t during THP split")
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
A common use case for hugetlbfs is for the application to create
memory pools backed by huge pages, which then get handed over to
some malloc library (eg. jemalloc) for further management.
That malloc library may be doing MADV_DONTNEED calls on memory
that is no longer needed, expecting those calls to happen on
PAGE_SIZE boundaries.
However, currently the MADV_DONTNEED code rounds up any such
requests to HPAGE_PMD_SIZE boundaries. This leads to undesired
outcomes when jemalloc expects a 4kB MADV_DONTNEED, but 2MB of
memory get zeroed out, instead.
Use of pre-built shared libraries means that user code does not
always know the page size of every memory arena in use.
Avoid unexpected data loss with MADV_DONTNEED by rounding up
only to PAGE_SIZE (in do_madvise), and rounding down to huge
page granularity.
That way programs will only get as much memory zeroed out as
they requested.
Link: https://lkml.kernel.org/r/20221021192805.366ad573@imladris.surriel.com
Fixes: 90e7e7f5ef ("mm: enable MADV_DONTNEED for hugetlb mappings")
Signed-off-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
When !CONFIG_VM_BUG_ON, there is warning of
clang-analyzer-deadcode.DeadStores:
Value stored to 'mt' during its initialization is never read.
Link: https://lkml.kernel.org/r/20221021101555.7992-2-quic_aiquny@quicinc.com
Signed-off-by: Maria Yu <quic_aiquny@quicinc.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Doug Berger <opendmb@gmail.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Zi Yan <ziy@nvidia.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
fs/ext4/super.c:1744:19: warning: 'deprecated_msg' defined but not used [-Wunused-const-variable=]
Reported-by: kernel test robot <lkp@intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
These percpu counters are referenced in free_ipcs->freeque, so destroy
them later.
Fixes: 72d1e61108 ("ipc/msg: mitigate the lock contention with percpu counter")
Reported-by: syzbot+96e659d35b9d6b541152@syzkaller.appspotmail.com
Tested-by: Mark Rutland <mark.rutland@arm.com>
Cc: Jiebin Sun <jiebin.sun@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
In sysfs, we use attribute name "cpumap" or "cpus" for cpu mask and
"cpulist" or "cpus_list" for cpu list. For example, in my system,
$ cat /sys/devices/system/node/node0/cpumap
f,ffffffff
$ cat /sys/devices/system/cpu/cpu2/topology/core_cpus
0,00100004
$ cat cat /sys/devices/system/node/node0/cpulist
0-35
$ cat /sys/devices/system/cpu/cpu2/topology/core_cpus_list
2,20
It looks reasonable to use "nodemap" for node mask and "nodelist" for
node list. So, rename the attribute to follow the naming convention.
Link: https://lkml.kernel.org/r/20221020015122.290097-1-ying.huang@intel.com
Fixes: 9832fb8783 ("mm/demotion: expose memory tier details via sysfs")
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Acked-by: Wei Xu <weixugc@google.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Bharata B Rao <bharata@amd.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Hesham Almatary <hesham.almatary@huawei.com>
Cc: Jagdish Gediya <jvgediya.oss@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Tim Chen <tim.c.chen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Commit 6edda04ccc ("mm/kmemleak: prevent soft lockup in first object
iteration loop of kmemleak_scan()") adds cond_resched() in the first
object iteration loop of kmemleak_scan(). However, it turns that the 2nd
objection iteration loop can still cause soft lockup to happen in some
cases. So add a cond_resched() call in the 2nd and 3rd loops as well to
prevent that and for completeness.
Link: https://lkml.kernel.org/r/20221020175619.366317-1-longman@redhat.com
Fixes: 6edda04ccc ("mm/kmemleak: prevent soft lockup in first object iteration loop of kmemleak_scan()")
Signed-off-by: Waiman Long <longman@redhat.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Fix a buffer release race condition, where the error value was used after
release.
Link: https://lkml.kernel.org/r/20221020223616.7571-4-phillip@squashfs.org.uk
Fixes: b09a7a036d ("squashfs: support reading fragments in readahead call")
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Tested-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reported-by: Marc Miltenberger <marcmiltenberger@gmail.com>
Cc: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>
Cc: Slade Watkins <srw@sladewatkins.net>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The readahead code will try to extend readahead to the entire size of the
Squashfs data block.
But, it didn't take into account that the last block at the end of the
file may not be a whole block. In this case, the code would extend
readahead to beyond the end of the file, leaving trailing pages.
Fix this by only requesting the expected number of pages.
Link: https://lkml.kernel.org/r/20221020223616.7571-3-phillip@squashfs.org.uk
Fixes: 8fc78b6fe2 ("squashfs: implement readahead")
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Tested-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reported-by: Marc Miltenberger <marcmiltenberger@gmail.com>
Cc: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>
Cc: Slade Watkins <srw@sladewatkins.net>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Patch series "squashfs: fix some regressions introduced in the readahead
code".
This patchset fixes 3 regressions introduced by the recent readahead code
changes. The first regression is causing "snaps" to randomly fail after a
couple of hours or days, which how the regression came to light.
This patch (of 3):
If a file isn't a whole multiple of the page size, the last page will have
trailing bytes unfilled.
There was a mistake in the readahead code which did this. In particular
it incorrectly assumed that the last page in the readahead page array
(page[nr_pages - 1]) will always contain the last page in the block, which
if we're at file end, will be the page that needs to be zero filled.
But the readahead code may not return the last page in the block, which
means it is unmapped and will be skipped by the decompressors (a temporary
buffer used).
In this case the zero filling code will zero out the wrong page, leading
to data corruption.
Fix this by by extending the "page actor" to return the last page if
present, or NULL if a temporary buffer was used.
Link: https://lkml.kernel.org/r/20221020223616.7571-1-phillip@squashfs.org.uk
Link: https://lkml.kernel.org/r/20221020223616.7571-2-phillip@squashfs.org.uk
Fixes: 8fc78b6fe2 ("squashfs: implement readahead")
Link: https://lore.kernel.org/lkml/b0c258c3-6dcf-aade-efc4-d62a8b3a1ce2@alu.unizg.hr/
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Reported-by: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>
Tested-by: Mirsad Goran Todorovac <mirsad.todorovac@alu.unizg.hr>
Tested-by: Slade Watkins <srw@sladewatkins.net>
Tested-by: Bagas Sanjaya <bagasdotme@gmail.com>
Reported-by: Marc Miltenberger <marcmiltenberger@gmail.com>
Cc: Dimitri John Ledkov <dimitri.ledkov@canonical.com>
Cc: Hsin-Yi Wang <hsinyi@chromium.org>
Cc: Thorsten Leemhuis <regressions@leemhuis.info>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
- Cancel recovery work on cleanup to avoid NULL pointer dereference
- Fix error path in the read/write error recovery path
- Fix kernel panic when remove non-standard SDIO card
- Fix WRITE_ZEROES handling for CQE
MMC host:
- sdhci_am654: Fixup Kconfig dependency for REGMAP_MMIO
- sdhci-esdhc-imx: Avoid warning of misconfigured bus-width
- sdhci-pci: Disable broken HS400 ES mode for ASUS BIOS on Jasper Lake
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Merge tag 'mmc-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Cancel recovery work on cleanup to avoid NULL pointer dereference
- Fix error path in the read/write error recovery path
- Fix kernel panic when remove non-standard SDIO card
- Fix WRITE_ZEROES handling for CQE
MMC host:
- sdhci_am654: Fixup Kconfig dependency for REGMAP_MMIO
- sdhci-esdhc-imx: Avoid warning of misconfigured bus-width
- sdhci-pci: Disable broken HS400 ES mode for ASUS BIOS on Jasper
Lake"
* tag 'mmc-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci_am654: 'select', not 'depends' REGMAP_MMIO
mmc: core: Fix WRITE_ZEROES CQE handling
mmc: core: Fix kernel panic when remove non-standard SDIO card
mmc: sdhci-pci-core: Disable ES for ASUS BIOS on Jasper Lake
mmc: sdhci-esdhc-imx: Propagate ESDHC_FLAG_HS400* only on 8bit bus
mmc: queue: Cancel recovery work on cleanup
mmc: block: Remove error check of hw_reset on reset
