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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:
- Fix memory detection for MT7621 devices
- Fix setnocoherentio kernel option
- Fix warning when CONFIG_SCHED_CORE is enabled
* tag 'mips-fixes-5.17_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: ralink: mt7621: use bitwise NOT instead of logical
mips: setup: fix setnocoherentio() boolean setting
MIPS: smp: fill in sibling and core maps earlier
MIPS: ralink: mt7621: do memory detection on KSEG1
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Pull auxdisplay fixes from Miguel Ojeda:
"A few lcd2s fixes from Andy Shevchenko"
* tag 'auxdisplay-for-linus-v5.17-rc7' of git://github.com/ojeda/linux:
auxdisplay: lcd2s: Use proper API to free the instance of charlcd object
auxdisplay: lcd2s: Fix memory leak in ->remove()
auxdisplay: lcd2s: Fix lcd2s_redefine_char() feature
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git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull ucounts fix from Eric Biederman:
"Etienne Dechamps recently found a regression caused by enforcing
RLIMIT_NPROC for root where the rlimit was not previously enforced.
Michal Koutný had previously pointed out the inconsistency in
enforcing the RLIMIT_NPROC that had been on the root owned process
after the root user creates a user namespace.
Which makes the fix for the regression simply removing the
inconsistency"
* 'ucount-rlimit-fixes-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
ucounts: Fix systemd LimitNPROC with private users regression
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Pull ARM fixes from Russell King:
- Fix kgdb breakpoint for Thumb2
- Fix dependency for BITREVERSE kconfig
- Fix nommu early_params and __setup returns
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9182/1: mmu: fix returns from early_param() and __setup() functions
ARM: 9178/1: fix unmet dependency on BITREVERSE for HAVE_ARCH_BITREVERSE
ARM: Fix kgdb breakpoint for Thumb2
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While it might work, the current approach is fragile in a few ways:
- whenever members in the structure are shuffled, the pointer will be wrong
- the resource freeing may include more than covered by kfree()
Fix this by using charlcd_free() call instead of kfree().
Fixes: 8c9108d014c5 ("auxdisplay: add a driver for lcd2s character display")
Cc: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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Once allocated the struct lcd2s_data is never freed.
Fix the memory leak by switching to devm_kzalloc().
Fixes: 8c9108d014c5 ("auxdisplay: add a driver for lcd2s character display")
Cc: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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It seems that the lcd2s_redefine_char() has never been properly
tested. The buffer is filled by DEF_CUSTOM_CHAR command followed
by the character number (from 0 to 7), but immediately after that
these bytes are rewritten by the decoded hex stream.
Fix the index to fill the buffer after the command and number.
Fixes: 8c9108d014c5 ("auxdisplay: add a driver for lcd2s character display")
Cc: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
[fixed typo in commit message]
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fix from Gao Xiang:
"A one-line patch to fix the new ztailpacking feature on > 4GiB
filesystems because z_idataoff can get trimmed improperly.
ztailpacking is still a brand new EXPERIMENTAL feature, but it'd be
better to fix the issue as soon as possible to avoid unnecessary
backporting.
Summary:
- Fix ztailpacking z_idataoff getting trimmed on > 4GiB filesystems"
* tag 'erofs-for-5.17-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: fix ztailpacking on > 4GiB filesystems
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Pull NTB fixes from Jon Mason:
"Bug fixes for sparse warning, intel port config offset, and a new
mailing list"
* tag 'ntb-5.17-bugfixes' of git://github.com/jonmason/ntb:
MAINTAINERS: update mailing list address for NTB subsystem
ntb: intel: fix port config status offset for SPR
NTB/msi: Use struct_size() helper in devm_kzalloc()
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z_idataoff here is an absolute physical offset, so it should use
erofs_off_t (64 bits at least). Otherwise, it'll get trimmed and
cause the decompresion failure.
Link: https://lore.kernel.org/r/20220222033118.20540-1-hsiangkao@linux.alibaba.com
Fixes: ab92184ff8f1 ("erofs: add on-disk compressed tail-packing inline support")
Reviewed-by: Yue Hu <huyue2@yulong.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
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Pull kvm fixes from Paolo Bonzini:
"The bigger part of the change is a revert for x86 hosts. Here the
second patch was supposed to fix the first, but in reality it was just
as broken, so both have to go.
x86 host:
- Revert incorrect assumption that cr3 changes come with preempt
notifier callbacks (they don't when static branches are changed,
for example)
ARM host:
- Correctly synchronise PMR and co on PSCI CPU_SUSPEND
- Skip tests that depend on GICv3 when the HW isn't available"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: selftests: aarch64: Skip tests if we can't create a vgic-v3
Revert "KVM: VMX: Save HOST_CR3 in vmx_prepare_switch_to_guest()"
Revert "KVM: VMX: Save HOST_CR3 in vmx_set_host_fs_gs()"
KVM: arm64: Don't miss pending interrupts for suspended vCPU
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull binfmt_elf fix from Kees Cook:
"This addresses a regression[1] under ia64 where some ET_EXEC binaries
were not loading"
Link: https://linux-regtracking.leemhuis.info/regzbot/regression/a3edd529-c42d-3b09-135c-7e98a15b150f@leemhuis.info/ [1]
- Fix ia64 ET_EXEC loading
* tag 'binfmt_elf-v5.17-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
binfmt_elf: Avoid total_mapping_size for ET_EXEC
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Partially revert commit 5f501d555653 ("binfmt_elf: reintroduce using
MAP_FIXED_NOREPLACE"), which applied the ET_DYN "total_mapping_size"
logic also to ET_EXEC.
At least ia64 has ET_EXEC PT_LOAD segments that are not virtual-address
contiguous (but _are_ file-offset contiguous). This would result in a
giant mapping attempting to cover the entire span, including the virtual
address range hole, and well beyond the size of the ELF file itself,
causing the kernel to refuse to load it. For example:
$ readelf -lW /usr/bin/gcc
...
Program Headers:
Type Offset VirtAddr PhysAddr FileSiz MemSiz ...
...
LOAD 0x000000 0x4000000000000000 0x4000000000000000 0x00b5a0 0x00b5a0 ...
LOAD 0x00b5a0 0x600000000000b5a0 0x600000000000b5a0 0x0005ac 0x000710 ...
...
^^^^^^^^ ^^^^^^^^^^^^^^^^^^ ^^^^^^^^ ^^^^^^^^
File offset range : 0x000000-0x00bb4c
0x00bb4c bytes
Virtual address range : 0x4000000000000000-0x600000000000bcb0
0x200000000000bcb0 bytes
Remove the total_mapping_size logic for ET_EXEC, which reduces the
ET_EXEC MAP_FIXED_NOREPLACE coverage to only the first PT_LOAD (better
than nothing), and retains it for ET_DYN.
Ironically, this is the reverse of the problem that originally caused
problems with MAP_FIXED_NOREPLACE: overlapping PT_LOAD segments. Future
work could restore full coverage if load_elf_binary() were to perform
mappings in a separate phase from the loading (where it could resolve
both overlaps and holes).
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-mm@kvack.org
Reported-by: matoro <matoro_bugzilla_kernel@matoro.tk>
Fixes: 5f501d555653 ("binfmt_elf: reintroduce using MAP_FIXED_NOREPLACE")
Link: https://lore.kernel.org/r/a3edd529-c42d-3b09-135c-7e98a15b150f@leemhuis.info
Tested-by: matoro <matoro_mailinglist_kernel@matoro.tk>
Link: https://lore.kernel.org/lkml/ce8af9c13bcea9230c7689f3c1e0e2cd@matoro.tk
Tested-By: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/lkml/49182d0d-708b-4029-da5f-bc18603440a6@physik.fu-berlin.de
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
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It was the intention to reverse the bits, not make them all zero by
using logical NOT operator.
Fixes: cc19db8b312a ("MIPS: ralink: mt7621: do memory detection on KSEG1")
Suggested-by: Chuanhong Guo <gch981213@gmail.com>
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Reviewed-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"The code changes address mostly minor problems:
- Several NXP/FSL SoC driver fixes, addressing issues with error
handling and compilation
- Fix a clock disabling imbalance in gpcv2 driver.
- Arm Juno DMA coherency issue
- Trivial firmware driver fixes for op-tee and scmi firmware
The remaining changes address issues in the devicetree files:
- A timer regression for the OMAP devkit8000, which has to use the
alternative timer.
- A hang in the i.MX8MM power domain configuration
- Multiple fixes for the Rockchip RK3399 addressing issues with sound
and eMMC
- Cosmetic fixes for i.MX8ULP, RK3xxx, and Tegra124"
* tag 'soc-fixes-5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (32 commits)
ARM: tegra: Move panels to AUX bus
soc: imx: gpcv2: Fix clock disabling imbalance in error path
soc: fsl: qe: Check of ioremap return value
soc: fsl: qe: fix typo in a comment
soc: fsl: guts: Add a missing memory allocation failure check
soc: fsl: guts: Revert commit 3c0d64e867ed
soc: fsl: Correct MAINTAINERS database (SOC)
soc: fsl: Correct MAINTAINERS database (QUICC ENGINE LIBRARY)
soc: fsl: Replace kernel.h with the necessary inclusions
dt-bindings: fsl,layerscape-dcfg: add missing compatible for lx2160a
dt-bindings: qoriq-clock: add missing compatible for lx2160a
ARM: dts: Use 32KiHz oscillator on devkit8000
ARM: dts: switch timer config to common devkit8000 devicetree
tee: optee: fix error return code in probe function
arm64: dts: imx8ulp: Set #thermal-sensor-cells to 1 as required
arm64: dts: imx8mm: Fix VPU Hanging
ARM: dts: rockchip: fix a typo on rk3288 crypto-controller
ARM: dts: rockchip: reorder rk322x hmdi clocks
firmware: arm_scmi: Remove space in MODULE_ALIAS name
arm64: dts: agilex: use the compatible "intel,socfpga-agilex-hsotg"
...
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git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
Pull EFI fixes from Ard Biesheuvel:
- don't treat valid hartid U32_MAX as a failure return code (RISC-V)
- avoid blocking query_variable_info() call when blocking is not
allowed
* tag 'efi-urgent-for-v5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi:
efivars: Respect "block" flag in efivar_entry_set_safe()
riscv/efi_stub: Fix get_boot_hartid_from_fdt() return value
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early_param() handlers should return 0 on success.
__setup() handlers should return 1 on success, i.e., the parameter
has been handled. A return of 0 would cause the "option=value" string
to be added to init's environment strings, polluting it.
../arch/arm/mm/mmu.c: In function 'test_early_cachepolicy':
../arch/arm/mm/mmu.c:215:1: error: no return statement in function returning non-void [-Werror=return-type]
../arch/arm/mm/mmu.c: In function 'test_noalign_setup':
../arch/arm/mm/mmu.c:221:1: error: no return statement in function returning non-void [-Werror=return-type]
Fixes: b849a60e0903 ("ARM: make cr_alignment read-only #ifndef CONFIG_CPU_CP15")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: Igor Zhbanov <i.zhbanov@omprussia.ru>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Cc: patches@armlinux.org.uk
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
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When the "block" flag is false, the old code would sometimes still call
check_var_size(), which wrongly tells ->query_variable_store() that it can
block.
As far as I can tell, this can't really materialize as a bug at the moment,
because ->query_variable_store only does something on X86 with generic EFI,
and in that configuration we always take the efivar_entry_set_nonblocking()
path.
Fixes: ca0e30dcaa53 ("efi: Add nonblocking option to efi_query_variable_store()")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220218180559.1432559-1-jannh@google.com
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The get_boot_hartid_from_fdt() function currently returns U32_MAX
for failure case which is not correct because U32_MAX is a valid
hartid value. This patch fixes the issue by returning error code.
Cc: <stable@vger.kernel.org>
Fixes: d7071743db31 ("RISC-V: Add EFI stub support.")
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A single fix for a regression caused by the recent PCI/MSI rework
which resulted in a recursive locking problem in the VMD driver.
The cure is to cache the relevant information upfront instead of
retrieving it at runtime"
* tag 'irq-urgent-2022-02-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
PCI: vmd: Prevent recursive locking on interrupt allocation
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Pull dma-mapping fix from Christoph Hellwig:
- fix a swiotlb info leak (Halil Pasic)
* tag 'dma-mapping-5.17-1' of git://git.infradead.org/users/hch/dma-mapping:
swiotlb: fix info leak with DMA_FROM_DEVICE
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
- Fix some drive strength and pull-up code in the K210 driver.
- Add the Alder Lake-M ACPI ID so it starts to work properly.
- Use a static name for the StarFive GPIO irq_chip, forestalling an
upcoming fixes series from Marc Zyngier.
- Fix an ages old bug in the Tegra 186 driver where we were indexing at
random into struct and being lucky getting the right member.
* tag 'pinctrl-v5-17-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
gpio: tegra186: Fix chip_data type confusion
pinctrl: starfive: Use a static name for the GPIO irq_chip
pinctrl: tigerlake: Revert "Add Alder Lake-M ACPI ID"
pinctrl: k210: Fix bias-pull-up
pinctrl: fix loop in k210_pinconf_get_drive()
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- rtla (Real-Time Linux Analysis tool):
- fix typo in man page
- Update API -e to -E before it is released
- Error message fix and memory leak fix
- Partially uninline trace event soft disable to shrink text
- Fix function graph start up test
- Have triggers affect the trace instance they are in and not top level
- Have osnoise sleep in the units it says it uses
- Remove unused ftrace stub function
- Remove event probe redundant info from event in the buffer
- Fix group ownership setting in tracefs
- Ensure trace buffer is minimum size to prevent crashes
* tag 'trace-v5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
rtla/osnoise: Fix error message when failing to enable trace instance
rtla/osnoise: Free params at the exit
rtla/hist: Make -E the short version of --entries
tracing: Fix selftest config check for function graph start up test
tracefs: Set the group ownership in apply_options() not parse_options()
tracing/osnoise: Make osnoise_main to sleep for microseconds
ftrace: Remove unused ftrace_startup_enable() stub
tracing: Ensure trace buffer is at least 4096 bytes large
tracing: Uninline trace_trigger_soft_disabled() partly
eprobes: Remove redundant event type information
tracing: Have traceon and traceoff trigger honor the instance
tracing: Dump stacktrace trigger to the corresponding instance
rtla: Fix systme -> system typo on man page
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git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock fix from Mike Rapoport:
"Use kfree() to release kmalloced memblock regions
memblock.{reserved,memory}.regions may be allocated using kmalloc()
in memblock_double_array(). Use kfree() to release these kmalloced
regions"
* tag 'fixes-2022-02-26' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
memblock: use kfree() to release kmalloced memblock regions
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Merge misc fixes from Andrew Morton:
"12 patches.
Subsystems affected by this patch series: MAINTAINERS, mailmap, memfd,
and mm (hugetlb, kasan, hugetlbfs, pagemap, selftests, memcg, and
slab)"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
selftests/memfd: clean up mapping in mfd_fail_write
mailmap: update Roman Gushchin's email
MAINTAINERS, SLAB: add Roman as reviewer, git tree
MAINTAINERS: add Shakeel as a memcg co-maintainer
MAINTAINERS: remove Vladimir from memcg maintainers
MAINTAINERS: add Roman as a memcg co-maintainer
selftest/vm: fix map_fixed_noreplace test failure
mm: fix use-after-free bug when mm->mmap is reused after being freed
hugetlbfs: fix a truncation issue in hugepages parameter
kasan: test: prevent cache merging in kmem_cache_double_destroy
mm/hugetlb: fix kernel crash with hugetlb mremap
MAINTAINERS: add sysctl-next git tree
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A fix for the K210 sdcard defconfig, to avoid using a
fixed delay for the root FS
- A fix to make sure there's a proper call frame for
trace_hardirqs_{on,off}().
* tag 'riscv-for-linus-5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: fix oops caused by irqsoff latency tracer
riscv: fix nommu_k210_sdcard_defconfig
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Pull xfs fixes from Darrick Wong:
"Nothing exciting, just more fixes for not returning sync_filesystem
error values (and eliding it when it's not necessary).
Summary:
- Only call sync_filesystem when we're remounting the filesystem
readonly readonly, and actually check its return value"
* tag 'xfs-5.17-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: only bother with sync_filesystem during readonly remount
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Running the memfd script ./run_hugetlbfs_test.sh will often end in error
as follows:
memfd-hugetlb: CREATE
memfd-hugetlb: BASIC
memfd-hugetlb: SEAL-WRITE
memfd-hugetlb: SEAL-FUTURE-WRITE
memfd-hugetlb: SEAL-SHRINK
fallocate(ALLOC) failed: No space left on device
./run_hugetlbfs_test.sh: line 60: 166855 Aborted (core dumped) ./memfd_test hugetlbfs
opening: ./mnt/memfd
fuse: DONE
If no hugetlb pages have been preallocated, run_hugetlbfs_test.sh will
allocate 'just enough' pages to run the test. In the SEAL-FUTURE-WRITE
test the mfd_fail_write routine maps the file, but does not unmap. As a
result, two hugetlb pages remain reserved for the mapping. When the
fallocate call in the SEAL-SHRINK test attempts allocate all hugetlb
pages, it is short by the two reserved pages.
Fix by making sure to unmap in mfd_fail_write.
Link: https://lkml.kernel.org/r/20220219004340.56478-1-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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I'm moving to a @linux.dev account. Map my old addresses.
Link: https://lkml.kernel.org/r/20220221200006.416377-1-roman.gushchin@linux.dev
Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The slab code has an overlap with kmem accounting, where Roman has done
a lot of work recently and it would be useful to make sure he's CC'd on
patches that potentially affect it. Thus add him as a reviewer for the
SLAB subsystem.
Also while at it, add the link to slab git tree.
Link: https://lkml.kernel.org/r/20220222103104.13241-1-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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I have been contributing and reviewing to the memcg codebase for last
couple of years. So, making it official.
Link: https://lkml.kernel.org/r/20220224060148.4092228-1-shakeelb@google.com
Signed-off-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Link: https://lkml.kernel.org/r/4ad1f8da49d7b71c84a0c15bd5347f5ce704e730.1645608825.git.vdavydov.dev@gmail.com
Signed-off-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add myself as a memcg co-maintainer. My primary focus over last few
years was the kernel memory accounting stack, but I do work on some
other parts of the memory controller as well.
Link: https://lkml.kernel.org/r/20220221233951.659048-1-roman.gushchin@linux.dev
Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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On the latest RHEL the test fails due to executable mapped at 256MB
address
# ./map_fixed_noreplace
mmap() @ 0x10000000-0x10050000 p=0xffffffffffffffff result=File exists
10000000-10010000 r-xp 00000000 fd:04 34905657 /root/rpmbuild/BUILD/kernel-5.14.0-56.el9/linux-5.14.0-56.el9.ppc64le/tools/testing/selftests/vm/map_fixed_noreplace
10010000-10020000 r--p 00000000 fd:04 34905657 /root/rpmbuild/BUILD/kernel-5.14.0-56.el9/linux-5.14.0-56.el9.ppc64le/tools/testing/selftests/vm/map_fixed_noreplace
10020000-10030000 rw-p 00010000 fd:04 34905657 /root/rpmbuild/BUILD/kernel-5.14.0-56.el9/linux-5.14.0-56.el9.ppc64le/tools/testing/selftests/vm/map_fixed_noreplace
10029b90000-10029bc0000 rw-p 00000000 00:00 0 [heap]
7fffbb510000-7fffbb750000 r-xp 00000000 fd:04 24534 /usr/lib64/libc.so.6
7fffbb750000-7fffbb760000 r--p 00230000 fd:04 24534 /usr/lib64/libc.so.6
7fffbb760000-7fffbb770000 rw-p 00240000 fd:04 24534 /usr/lib64/libc.so.6
7fffbb780000-7fffbb7a0000 r--p 00000000 00:00 0 [vvar]
7fffbb7a0000-7fffbb7b0000 r-xp 00000000 00:00 0 [vdso]
7fffbb7b0000-7fffbb800000 r-xp 00000000 fd:04 24514 /usr/lib64/ld64.so.2
7fffbb800000-7fffbb810000 r--p 00040000 fd:04 24514 /usr/lib64/ld64.so.2
7fffbb810000-7fffbb820000 rw-p 00050000 fd:04 24514 /usr/lib64/ld64.so.2
7fffd93f0000-7fffd9420000 rw-p 00000000 00:00 0 [stack]
Error: couldn't map the space we need for the test
Fix this by finding a free address using mmap instead of hardcoding
BASE_ADDRESS.
Link: https://lkml.kernel.org/r/20220217083417.373823-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Jann Horn <jannh@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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oom reaping (__oom_reap_task_mm) relies on a 2 way synchronization with
exit_mmap. First it relies on the mmap_lock to exclude from unlock
path[1], page tables tear down (free_pgtables) and vma destruction.
This alone is not sufficient because mm->mmap is never reset.
For historical reasons[2] the lock is taken there is also MMF_OOM_SKIP
set for oom victims before.
The oom reaper only ever looks at oom victims so the whole scheme works
properly but process_mrelease can opearate on any task (with fatal
signals pending) which doesn't really imply oom victims. That means
that the MMF_OOM_SKIP part of the synchronization doesn't work and it
can see a task after the whole address space has been demolished and
traverse an already released mm->mmap list. This leads to use after
free as properly caught up by KASAN report.
Fix the issue by reseting mm->mmap so that MMF_OOM_SKIP synchronization
is not needed anymore. The MMF_OOM_SKIP is not removed from exit_mmap
yet but it acts mostly as an optimization now.
[1] 27ae357fa82b ("mm, oom: fix concurrent munlock and oom reaper unmap, v3")
[2] 212925802454 ("mm: oom: let oom_reap_task and exit_mmap run concurrently")
[mhocko@suse.com: changelog rewrite]
Link: https://lore.kernel.org/all/00000000000072ef2c05d7f81950@google.com/
Link: https://lkml.kernel.org/r/20220215201922.1908156-1-surenb@google.com
Fixes: 64591e8605d6 ("mm: protect free_pgtables with mmap_lock write lock in exit_mmap")
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reported-by: syzbot+2ccf63a4bd07cf39cab0@syzkaller.appspotmail.com
Suggested-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Rik van Riel <riel@surriel.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Kirill A. Shutemov <kirill@shutemov.name>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Christian Brauner <christian.brauner@ubuntu.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Jan Engelhardt <jengelh@inai.de>
Cc: Tim Murray <timmurray@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When we specify a large number for node in hugepages parameter, it may
be parsed to another number due to truncation in this statement:
node = tmp;
For example, add following parameter in command line:
hugepagesz=1G hugepages=4294967297:5
and kernel will allocate 5 hugepages for node 1 instead of ignoring it.
I move the validation check earlier to fix this issue, and slightly
simplifies the condition here.
Link: https://lkml.kernel.org/r/20220209134018.8242-1-liuyuntao10@huawei.com
Fixes: b5389086ad7be0 ("hugetlbfs: extend the definition of hugepages parameter to support node allocation")
Signed-off-by: Liu Yuntao <liuyuntao10@huawei.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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With HW_TAGS KASAN and kasan.stacktrace=off, the cache created in the
kmem_cache_double_destroy() test might get merged with an existing one.
Thus, the first kmem_cache_destroy() call won't actually destroy it but
will only decrease the refcount. This causes the test to fail.
Provide an empty constructor for the created cache to prevent the cache
from getting merged.
Link: https://lkml.kernel.org/r/b597bd434c49591d8af00ee3993a42c609dc9a59.1644346040.git.andreyknvl@google.com
Fixes: f98f966cd750 ("kasan: test: add test case for double-kmem_cache_destroy()")
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This fixes the below crash:
kernel BUG at include/linux/mm.h:2373!
cpu 0x5d: Vector: 700 (Program Check) at [c00000003c6e76e0]
pc: c000000000581a54: pmd_to_page+0x54/0x80
lr: c00000000058d184: move_hugetlb_page_tables+0x4e4/0x5b0
sp: c00000003c6e7980
msr: 9000000000029033
current = 0xc00000003bd8d980
paca = 0xc000200fff610100 irqmask: 0x03 irq_happened: 0x01
pid = 9349, comm = hugepage-mremap
kernel BUG at include/linux/mm.h:2373!
move_hugetlb_page_tables+0x4e4/0x5b0 (link register)
move_hugetlb_page_tables+0x22c/0x5b0 (unreliable)
move_page_tables+0xdbc/0x1010
move_vma+0x254/0x5f0
sys_mremap+0x7c0/0x900
system_call_exception+0x160/0x2c0
the kernel can't use huge_pte_offset before it set the pte entry because
a page table lookup check for huge PTE bit in the page table to
differentiate between a huge pte entry and a pointer to pte page. A
huge_pte_alloc won't mark the page table entry huge and hence kernel
should not use huge_pte_offset after a huge_pte_alloc.
Link: https://lkml.kernel.org/r/20220211063221.99293-1-aneesh.kumar@linux.ibm.com
Fixes: 550a7d60bd5e ("mm, hugepages: add mremap() support for hugepage backed vma")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add a git tree for sysctls as there's been quite a bit of work lately to
remove all the syctls out of kernel/sysctl.c and move to their respective
places, so coordination has been needed to avoid conflicts. This tree
will also help soak these changes on linux-next prior to getting to Linus.
Link: https://lkml.kernel.org/r/20220218182736.3694508-1-mcgrof@kernel.org
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Iurii Zaikin <yzaikin@google.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When a trace instance creation fails, tools are printing:
Could not enable -> osnoiser <- tracer for tracing
Print the actual (and correct) name of the tracer it fails to enable.
Link: https://lkml.kernel.org/r/53ef0582605af91eca14b19dba9fc9febb95d4f9.1645206561.git.bristot@kernel.org
Fixes: b1696371d865 ("rtla: Helper functions for rtla")
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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The variable that stores the parsed command line arguments are not
being free()d at the rtla osnoise top exit path.
Free params variable before exiting.
Link: https://lkml.kernel.org/r/0be31d8259c7c53b98a39769d60cfeecd8421785.1645206561.git.bristot@kernel.org
Fixes: 1eceb2fc2ca5 ("rtla/osnoise: Add osnoise top mode")
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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Currently, --entries uses -e as the short version in the hist mode of
timerlat and osnoise tools. But as -e is already used to enable events
on trace sessions by other tools, thus let's keep it available for the
same usage for all rtla tools.
Make -E the short version of --entries for hist mode on all tools.
Note: rtla was merged in this merge window, so rtla was not released yet.
Link: https://lkml.kernel.org/r/5dbf0cbe7364d3a05e708926b41a097c59a02b1e.1645206561.git.bristot@kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS is required to test
direct tramp.
Link: https://lkml.kernel.org/r/bdc7e594e13b0891c1d61bc8d56c94b1890eaed7.1640017960.git.christophe.leroy@csgroup.eu
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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Al Viro brought it to my attention that the dentries may not be filled
when the parse_options() is called, causing the call to set_gid() to
possibly crash. It should only be called if parse_options() succeeds
totally anyway.
He suggested the logical place to do the update is in apply_options().
Link: https://lore.kernel.org/all/20220225165219.737025658@goodmis.org/
Link: https://lkml.kernel.org/r/20220225153426.1c4cab6b@gandalf.local.home
Cc: stable@vger.kernel.org
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Fixes: 48b27b6b5191 ("tracefs: Set all files to the same group ownership as the mount option")
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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git://git.infradead.org/users/hch/configfs
Pull configfs fix from Christoph Hellwig:
- fix a race in configfs_{,un}register_subsystem (ChenXiaoSong)
* tag 'configfs-5.17-2022-02-25' of git://git.infradead.org/users/hch/configfs:
configfs: fix a race in configfs_{,un}register_subsystem()
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"This is a hopefully last batch of fixes for defrag that got broken in
5.16, all stable material.
The remaining reported problem is excessive IO with autodefrag due to
various conditions in the defrag code not met or missing"
* tag 'for-5.17-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: reduce extent threshold for autodefrag
btrfs: autodefrag: only scan one inode once
btrfs: defrag: don't use merged extent map for their generation check
btrfs: defrag: bring back the old file extent search behavior
btrfs: defrag: remove an ambiguous condition for rejection
btrfs: defrag: don't defrag extents which are already at max capacity
btrfs: defrag: don't try to merge regular extents with preallocated extents
btrfs: defrag: allow defrag_one_cluster() to skip large extent which is not a target
btrfs: prevent copying too big compressed lzo segment
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Pull rdma fixes from Jason Gunthorpe:
- Older "does not even boot" regression in qib from July
- Bug fixes for error unwind in rtrs
- Avoid a deadlock syzkaller found in srp
- Fix another UAF syzkaller found in cma
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/cma: Do not change route.addr.src_addr outside state checks
RDMA/ib_srp: Fix a deadlock
RDMA/rtrs-clt: Move free_permit from free_clt to rtrs_clt_close
RDMA/rtrs-clt: Fix possible double free in error case
IB/qib: Fix duplicate sysfs directory name
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git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
- fix an bug generating spurious interrupts in gpio-rockchip
- fix a race condition in gpiod_to_irq() called by GPIO consumers
* tag 'gpio-fixes-for-v5.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: Return EPROBE_DEFER if gc->to_irq is NULL
gpio: rockchip: Reset int_bothedge when changing trigger
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If the state is not idle then resolve_prepare_src() should immediately
fail and no change to global state should happen. However, it
unconditionally overwrites the src_addr trying to build a temporary any
address.
For instance if the state is already RDMA_CM_LISTEN then this will corrupt
the src_addr and would cause the test in cma_cancel_operation():
if (cma_any_addr(cma_src_addr(id_priv)) && !id_priv->cma_dev)
Which would manifest as this trace from syzkaller:
BUG: KASAN: use-after-free in __list_add_valid+0x93/0xa0 lib/list_debug.c:26
Read of size 8 at addr ffff8881546491e0 by task syz-executor.1/32204
CPU: 1 PID: 32204 Comm: syz-executor.1 Not tainted 5.12.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x141/0x1d7 lib/dump_stack.c:120
print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232
__kasan_report mm/kasan/report.c:399 [inline]
kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416
__list_add_valid+0x93/0xa0 lib/list_debug.c:26
__list_add include/linux/list.h:67 [inline]
list_add_tail include/linux/list.h:100 [inline]
cma_listen_on_all drivers/infiniband/core/cma.c:2557 [inline]
rdma_listen+0x787/0xe00 drivers/infiniband/core/cma.c:3751
ucma_listen+0x16a/0x210 drivers/infiniband/core/ucma.c:1102
ucma_write+0x259/0x350 drivers/infiniband/core/ucma.c:1732
vfs_write+0x28e/0xa30 fs/read_write.c:603
ksys_write+0x1ee/0x250 fs/read_write.c:658
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xae
This is indicating that an rdma_id_private was destroyed without doing
cma_cancel_listens().
Instead of trying to re-use the src_addr memory to indirectly create an
any address derived from the dst build one explicitly on the stack and
bind to that as any other normal flow would do. rdma_bind_addr() will copy
it over the src_addr once it knows the state is valid.
This is similar to commit bc0bdc5afaa7 ("RDMA/cma: Do not change
route.addr.src_addr.ss_family")
Link: https://lore.kernel.org/r/0-v2-e975c8fd9ef2+11e-syz_cma_srcaddr_jgg@nvidia.com
Cc: stable@vger.kernel.org
Fixes: 732d41c545bb ("RDMA/cma: Make the locking for automatic state transition more clear")
Reported-by: syzbot+c94a3675a626f6333d74@syzkaller.appspotmail.com
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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