Linus Torvalds [Tue, 23 Jun 2026 23:02:03 +0000 (16:02 -0700)]
Merge tag 'irq-urgent-2026-06-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc irqchip driver fixes from Ingo Molnar:
- Fix indexing bug in the Crossbar irqchip driver (Bhargav Joshi)
- Fix a parent domain resource leak in the Crossbar irqchip driver
(Bhargav Joshi)
- Fix resource leak in the ImgTec PDC irqchip driver's exit logic
(Qingshuang Fu)
- Fix macro name in comment block (Ethan Nelson-Moore)
* tag 'irq-urgent-2026-06-23' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq/msi: Correct CONFIG_PCI_MSI_ARCH_FALLBACKS macro name in comment
irqchip/imgpdc: Fix resource leak, add missing chained handler cleanup on remove
irqchip/crossbar: Fix parent domain resource leak
irqchip/crossbar: Use correct index in crossbar_domain_free()
Linus Torvalds [Tue, 23 Jun 2026 22:51:14 +0000 (15:51 -0700)]
Merge tag 'dmaengine-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"Core:
- New devm_of_dma_controller_register() API
- Refactor devm_dma_request_chan() API
New Support:
- Loongson Multi-Channel DMA controller support
- Renesas RZ/{T2H,N2H} support
- Dw CV1800B DMA support
- Switchtec DMA engine driver
U pdates:
- Xilinx AXI dma binding conversion
- Renesas CHCTRL register read updates
- AMD MDB Endpoint and non-LL mode Support
- AXI dma handling of SW and HW cyclic transfers termination
- Intel ioatdma and idxd driver updates"
* tag 'dmaengine-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (62 commits)
dt-bindings: dma: snps,dw-axi-dmac: Add fallback compatible for CV1800B
MAINTAINERS: dmaengine/ti: Remove myself and add Vignesh as maintainer
dmaengine: qcom: Unify user-visible "Qualcomm" name
dt-bindings: dma: qcom,gpi: Document GPI DMA engine for Shikra SoC
dmaengine: qcom: hidma: use sysfs_emit() in sysfs show callbacks
dmaengine: dw-axi-dmac: fix PM for system sleep and channel alloc
dmaengine: dw-axi-dmac: drop redundant DMAC enable in block start
dmaengine: altera-msgdma: Use memcpy_toio for descriptor FIFO writes
dt-bindings: dma: fsl-edma: add dma-channel-mask property description
dmaengine: tegra: Fix burst size calculation
dmaengine: iop32x-adma: Remove a leftover header file
dmaengine: dma-axi-dmac: use DMA pool to manange DMA descriptor
dmaengine: dma-axi-dmac: Drop struct clk from main struct
dmaengine: dma-axi-dmac: Properly free struct axi_dmac_desc
dmaengine: Fix possible use after free
dmaengine: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK
dmaengine: dw-edma-pcie: Reject devices without driver data
dmaengine: sh: rz-dmac: Add DMA ACK signal routing support
irqchip/renesas-rzv2h: Add DMA ACK signal routing support
dmaengine: dw-edma: Remove dw_edma_add_irq_mask()
...
Linus Torvalds [Tue, 23 Jun 2026 22:41:48 +0000 (15:41 -0700)]
Merge tag 'phy-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy
Pull phy updates from Vinod Koul:
"Bunch of new driver, device support in existing drivers/binding and
few updates to existing drivers
New Support:
- Qualcomm Eliza QMP PHY, Eliza Synopsys eUSB2 support, Eliza PCIe
phy support, Nord QMP UFS PHY, IPQ5210 USB3 PHY support
- Econet EN751221 and EN7528 PCIe phy support
- NXPs TJA1145 CAN transceiver phy support
- TI DS125DF111 retimer phy support
- Rockchip RK3528 usb phy support
- TI J722S phy support
- Axiado eMMC PHY driver
- EyeQ5 Ethernet PHY driver
- Generic PHY driver for Lynx 10G SerDes
- Spacemit K3 USB2 PHY support
Updates:
- Tomi helping maintian zynqmp phys
- lynx phy updates to support 25GBASER
- Rockchip GRF for RK3568/RV1108 support
- Qualcomm QSERDES COM v2 support"
* tag 'phy-for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy: (87 commits)
phy: rockchip: inno-usb2: Add missing clkout_ctl_phy kerneldoc
phy: Move MODULE_DEVICE_TABLE next to the table itself
phy: add basic support for NXPs TJA1145 CAN transceiver
dt-bindings: phy: add support for NXPs TJA1145 CAN transceiver
phy: freescale: phy-fsl-imx8qm-lvds-phy: Fix missing pm_runtime_disable() on probe error path
dt-bindings: phy: qcom,qmp-usb: Add ipq5210 USB3 PHY
dt-bindings: phy: qcom,qusb2: Document IPQ5210 compatible
phy: freescale: phy-fsl-imx8qm-lvds-phy: Use synchronous PM runtime put in reset
MAINTAINERS: expand Lynx 28G entry to cover Lynx 10G SerDes
phy: lynx-10g: new driver
dt-bindings: phy: lynx-10g: initial document
phy: lynx-28g: improve phy_validate() procedure
phy: lynx-28g: optimize read-modify-write operation
phy: lynx-28g: add support for big endian register maps
phy: lynx-28g: common probe() and remove()
phy: lynx-28g: make lynx_28g_pll_read_configuration() callable per PLL
phy: lynx-28g: move struct lynx_info definitions downwards
phy: lynx-28g: provide default lynx_lane_supports_mode() implementation
phy: lynx-28g: generalize protocol converter accessors
phy: lynx-28g: common lynx_pll_get()
...
Linus Torvalds [Tue, 23 Jun 2026 20:58:38 +0000 (13:58 -0700)]
Merge tag 'soundwire-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire
Pull soundwire updates from Vinod Koul:
- Improvements in handling of soundwire groups
- Additional checks flagged by various tools
- Intel driver updates for ghost Realtek device handling in firmware
and adding devices to wake lists
* tag 'soundwire-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
soundwire: dmi-quirks: Disable ghost Realtek devices
soundwire: only handle alert events when the peripheral is attached
soundwire: intel_ace2x: release bpt_stream when close it
soundwire: intel: Move suspend tracking from trigger to pm suspend
soundwire: intel_auxdevice: Add es9356 to wake_capable_list
soundwire: use krealloc_array to prevent integer overflow
soundwire: increase group->max_size after allocation
soundwire: fix bug in sdw_add_element_group_count found by syzkaller
soundwire: don't program SDW_SCP_BUSCLOCK_SCALE on a unattached Peripheral
soundwire: validate DT compatible before parsing it
soundwire: intel_auxdevice: Add cs42l43b to wake_capable_list
soundwire: stream: sdw_stream_remove_slave(): Check stream is valid
Linus Torvalds [Tue, 23 Jun 2026 20:36:09 +0000 (13:36 -0700)]
Merge tag 'sched_ext-for-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext tree reorg from Tejun Heo:
"Pure source reorganization with no functional change:
- the kernel/sched/ext* files move into a new kernel/sched/ext/
subdirectory
- the headers and sources are made self-contained so editor tooling
can parse each file on its own"
* tag 'sched_ext-for-7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
sched_ext: Move shared helpers from ext.c into internal.h and cid.h
sched_ext: Make kernel/sched/ext/ sources self-contained for clangd
sched_ext: Move sources under kernel/sched/ext/
Provide khugepaged with the capability to collapse anonymous memory
regions to mTHPs
- "Remove CONFIG_READ_ONLY_THP_FOR_FS and enable file THP for writable
files" (Zi Yan)
Remove the READ_ONLY_THP_FOR_FS check in file_thp_enabled(), so that
khugepaged and MADV_COLLAPSE can run on filesystems with PMD THP
pagecache support even without READ_ONLY_THP_FOR_FS enabled
- "make MM selftests more CI friendly" (Mike Rapoport)
General fixes and cleanups to the MM selftests. Also move more MM
selftests under the kselftest framework, making them more amenable to
ongoing CI testing
- "selftests/mm: fix failures and robustness improvements" and
"selftests/mm: assorted fixes for hmm-tests" (Sayali Patil)
Fix several issues in MM selftests which were revealed by powerpc 64k
pagesize
* tag 'mm-stable-2026-06-23-08-55' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (118 commits)
Revert "mm: limit filemap_fault readahead to VMA boundaries"
mm/vmscan: pass NULL to trace vmscan node reclaim
mm: use mapping_mapped to simplify the code
selftests/mm: fix exclusive_cow test fork() handling
selftests/mm: remove hardcoded THP sizing assumptions in hmm tests
selftests/mm: allow PUD-level entries in compound testcase of hmm tests
mm/gup_test: reject wrapped user ranges
mm/page_frag: reject invalid CPUs in page_frag_test
mm/damon/core: always put unsuccessfully committed target pids
mm: page_isolation: avoid unsafe folio reads while scanning compound pages
mm/shrinker: do not hold RCU lock in shrinker_debugfs_count_show()
selftests: mm: fix and speedup "droppable" test
mm: merge writeout into pageout
MAINTAINERS: add Hao Ge as reviewer for codetag and alloc_tag
selftests/mm: clarify alternate unmapping in compaction_test
selftests/mm: move hwpoison setup into run_test() and silence modprobe output for memory-failure category
selftests/mm: skip uffd-stress test when nr_pages_per_cpu is zero
selftests/mm: skip uffd-wp-mremap if UFFD write-protect is unsupported
selftests/mm: ensure destination is hugetlb-backed in hugetlb-mremap
selftest/mm: register existing mapping with userfaultfd in hugetlb-mremap
...
Linus Torvalds [Tue, 23 Jun 2026 18:34:49 +0000 (11:34 -0700)]
Merge tag 'perf-tools-for-v7.2-1-2026-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools
Pull perf tools updates from Arnaldo Carvalho de Melo:
- Introduce 'perf inject --aslr' to remap ASLR-randomized addresses in
perf.data files, enabling reproducible analysis across runs with
different address space layouts
- Refactor evsel out of sample processing paths: store evsel in struct
perf_sample and remove the redundant evsel parameter from tool APIs,
tracepoint handlers, hist entry iterators, and db-export, simplifying
the entire tool callback chain
- Switch architecture detection from string-based perf_env__arch()
comparisons to the numeric ELF e_machine field across the codebase
(capstone, print_insn, c2c, lock-contention, sort, sample-raw,
machine, header), making cross-analysis more robust
- Overhaul ARM CoreSight ETM tests: add deterministic and named_threads
workloads, speed up basic and disassembly tests, add process
attribution and concurrent threads tests, remove unused workloads and
duplicate tests, queue context packets for the frontend decoder
- Add ARM SPE IMPDEF event decoding for Arm Neoverse N1, store MIDR in
arm_spe_pkt for per-CPU event mapping, handle missing CPU IDs
gracefully
- Refactor libunwind support: remove the libunwind-local backend, make
register reading cross-platform, add RISC-V libunwind support, allow
dynamic selection between libdw and libunwind unwinding at runtime
- Extensive hardening of perf.data parsing against crafted files: add
bounds checks and byte-swap validation for session records, feature
sections, header attributes, BPF metadata, auxtrace errors,
compressed events, CPU maps, build ID notes, and ELF program headers.
Add minimum event size validation and file offset diagnostics
- Fix libdw API contract violations across dwarf-aux, libdw,
probe-finder, annotate-data, and debuginfo subsystems. Fix callchain
parent update in ORDER_CALLER mode, support DWARF line 0 in inline
lists, handle multiple address spaces in callchains
- Fix numerous 'perf sched' bugs: thread reference leaks, memory leaks,
heap overflows with cross-machine recordings, NULL dereferences,
replace BUG_ON assertions with graceful error handling, bounds-check
CPU indices, fix SIGCHLD vs pause() races in sched stats
- Overhaul the build system: move BPF skeleton generation out of
Makefile.perf into bpf_skel.mak, decouple pmu-events from the prepare
target, make beauty generated C code standalone .o files, compile BPF
skeletons with -mcpu=v3, fix continuous rebuilds, various cleanups
- Add 'perf test' JUnit XML reporting with -j/--junit option, split
monolithic test suites into sub-tests, add summary reporting,
refactor parallel poll loop, fix test failures on musl-based systems
- Fix 'perf c2c' memory leaks in hist entry and format list handling,
use-after-free in error paths, bounds-check CPU and node IDs
- Fix 'perf bpf' metadata leaks on duplicate insert and alloc failure,
bounds-check array offsets, validate event sizes and func_info
fields, add NULL checks
- Fix symbols subsystem: bounds-check ELF and sysfs build ID note
iteration, validate p_filesz, fix 32-bit ELF bswap error, fix signed
overflow in size checks, bounds-check .gnu_debuglink section
- Fix tools lib api: null termination in filename__read_int/ull(),
uninitialized stack data in filename__write_int(), snprintf
truncation in mount_overload()
- Replace libbabeltrace with babeltrace2-ctf-writer for CTF conversion
in 'perf data'
- Add RISC-V SDT argument parsing for static tracepoints
- Add 'perf trace --show-cpu' option to display CPU id
- Add 'perf bench sched pipe --write-size' option
- Add a perf-specific .clang-format that overrides some kernel style
behaviors
- Update Intel vendor events for Alder Lake, Arrow Lake, Clearwater
Forest, Emerald Rapids, Granite Rapids, Grand Ridge, Lunar Lake,
Meteor Lake, Panther Lake, Sapphire Rapids, Sierra Forest
- Add IOMMU metrics for AMD and Intel
- Fix AMD event: switch l2_itlb_misses to
bp_l1_tlb_miss_l2_tlb_miss.all
- Add AMD IBS improvements: decode Streaming-store and Remote-Socket
flags, suppress bogus fields on Zen4+, skip privilege test on Zen6+
- Fix 'perf lock contention' SIGCHLD vs pause() race, allow 'mmap_lock'
in -L filter, enable end-timestamp for cgroup aggregation, fix
non-atomic data updates
- Fix 'perf stat' false NMI watchdog warning in aggregation modes,
bounds-check CPU index in topology callbacks, add aggr_nr metric
parser support for uncore scaling
- Fix 'perf timechart' memory leaks, CPU bounds checking,
use-after-free on corrupted callchains
- Add O_CLOEXEC to open() calls and use mkostemp() for temporary files
to prevent file descriptor leaks to child processes
- Fix s390 Python extension TEXTREL by compiling as PIC
- Fix build with ASAN for jitdump
- Fix build failure due to btf_vlen() return type change
* tag 'perf-tools-for-v7.2-1-2026-06-22' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools: (343 commits)
perf bpf: Fix up build failure due to change of btf_vlen() return type
perf dso: Set standard errno on decompression failure
perf bpf: Validate array presence before casting BPF prog info pointers
perf c2c: Fix hist entry and format list leaks in c2c_he_free()
perf c2c: Free format list entries when c2c_hists__init() fails
perf cs-etm: Bounds-check CPU in cs_etm__get_queue()
perf cs-etm: Require full global header in auxtrace_info size check
perf cs-etm: Validate num_cpu before metadata allocation
perf machine: Use snprintf() for guestmount path construction
perf machine: Propagate machine__init() error to callers
perf trace: Guard __probe_ip suppression with evsel__is_probe()
perf evsel: Add lazy-initialized probe type detection helpers
perf evsel: Add no-libtraceevent stubs for evsel__field() and evsel__common_field()
perf cs-etm: Reject CPU IDs that would overflow signed comparison
perf c2c: Free format list entries when releasing c2c hist entries
perf bpf: Bounds-check array offsets in bpil_offs_to_addr()
perf bpf: Reject oversized BPF metadata events that truncate header.size
perf bpf: Validate func_info_rec_size and sub_id in synthesize_bpf_prog_name()
perf sched: Replace (void*)1 sentinel with proper runtime allocation
perf hwmon: Fix fd check to accept fd 0 in hwmon_pmu__describe_items()
...
Linus Torvalds [Tue, 23 Jun 2026 15:31:33 +0000 (08:31 -0700)]
Merge tag 'platform-drivers-x86-v7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver updates from Ilpo Järvinen:
- amd/hfi: Add support for dynamic ranking tables (version 3)
- amd/pmc:
- Add PMC driver support for AMD 1Ah M80H SoC
- Delay suspend for some Lenovo Laptops to avoid keyboard and lid
switch problems after s2idle
* tag 'platform-drivers-x86-v7.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86: (115 commits)
platform/x86/intel/pmc: Add NVL PCI IDs for SSRAM telemetry discovery
platform/x86/intel/pmc/ssram: Make PMT registration optional
platform/x86/intel/pmc/ssram: Add ACPI discovery scaffolding
platform/x86/intel/pmc/ssram: Switch to static array with per-index probe state
platform/x86/intel/pmc/ssram: Refactor DEVID/PWRMBASE extraction into helper
platform/x86/intel/pmc/ssram: Add PCI platform data
platform/x86/intel/pmc/ssram: Rename probe and PCI ID table for consistency
platform/x86/intel/pmc: Add ACPI PWRM telemetry driver for Nova Lake S
platform/x86/intel/pmc: Add PMC SSRAM Kconfig description
platform/x86/intel/pmt: Unify header fetch and add ACPI source
platform/x86/intel/pmt: Cache the telemetry discovery header
platform/x86/intel/pmt: Pass discovery index instead of resource
platform/x86/intel/pmt/telemetry: Move overlap check to post-decode hook
platform/x86/intel/pmt/crashlog: Split init into pre-decode
platform/x86/intel/pmt: Add pre/post decode hooks around header parsing
modpost: Handle malformed WMI GUID strings
platform/wmi: Make sysfs attributes const
platform/wmi: Make wmi_bus_class const
hwmon: (dell-smm) Use new buffer-based WMI API
platform/x86: dell-ddv: Use new buffer-based WMI API
...
Linus Torvalds [Tue, 23 Jun 2026 14:47:40 +0000 (07:47 -0700)]
Merge tag 'mailbox-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox
Pull mailbox updates from Jassi Brar:
"Core:
- add debugfs support for used channels
- fix resource leak on startup failure
- propagate tx error codes
- clarify blocking mode thread support
Drivers:
- exynos: remove unused register definitions
- imx: refactor IRQ handlers, migrate to devm helpers, and other
minor improvements
- mpfs: fix syscon presence check in inbox ISR
- mtk-adsp: fix use-after-free during device teardown
- qcom: add dt-bindings for QCOM Maili, Hawi, Shikra APCS, and Nord
CPUCP platform support"
* tag 'mailbox-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/jassibrar/mailbox: (23 commits)
mailbox: imx: Don't force-thread the primary handler
mailbox: imx: Move the RXDB part of the mailbox into the threaded handler
mailbox: imx: Move the RX part of the mailbox into the threaded handler
mailbox: imx: Start splitting the IRQ handler in primary and threaded handler
mailbox: imx: Use channel index instead of zero in imx_mu_specific_rx()
mailbox: imx: use devm_of_platform_populate()
mailbox: imx: Use devm_pm_runtime_enable()
mailbox: imx: Add a channel shutdown field
mailbox: imx: Forward the timeout/ error in imx_mu_generic_tx()
dt-bindings: mailbox: qcom: Add IPCC support for Maili Platform
mailbox: add list of used channels to debugfs
mailbox: don't free the channel if the startup callback failed
mailbox: Make mbox_send_message() return error code when tx fails
mailbox: Clarify multi-thread is not supported in blocking mode
mailbox: mtk-adsp: fix UAF during device teardown
mailbox: qcom: Unify user-visible "Qualcomm" name
mailbox: exynos: Drop unused register definitions
dt-bindings: mailbox: qcom: Add IPCC support for Hawi Platform
dt-bindings: mailbox: qcom,cpucp-mbox: Add Hawi compatible
dt-bindings: mailbox: qcom: Add Shikra APCS compatible
...
Linus Torvalds [Tue, 23 Jun 2026 14:39:49 +0000 (07:39 -0700)]
Merge tag 'for-next-tpm-7.2-rc1-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd
Pull tpm updates from Jarkko Sakkinen:
"Only bug fixes"
* tag 'for-next-tpm-7.2-rc1-fixed' of git://git.kernel.org/pub/scm/linux/kernel/git/jarkko/linux-tpmdd:
tpm: fix event_size output in tpm1_binary_bios_measurements_show
tpm: tpm_crb_ffa: revert defered_probed when tpm_crb_ffa is built-in
tpm: tpm2-sessions: wait for async KPP completion in tpm_buf_append_salt
tpm: tpm_tis: Add settle time for some TPMs
tpm: tpm_tis: store entire did_vid
tpm_crb: Check ACPI_COMPANION() against NULL during probe
tpm: tpm_tis_spi: Use wait_woken() in wait_for_tmp_stat()
tpm: Initialize name_size_alg for non-NULL name in tpm_buf_append_name()
tpm: restore timeout for key creation commands
tpm: svsm: constify tpm_chip_ops
Linus Torvalds [Tue, 23 Jun 2026 14:35:37 +0000 (07:35 -0700)]
Merge tag 'linux_kselftest-next-7.2-rc1-second' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull more kselftest updates from Shuah Khan:
"Docs:
-remove obsolete wiki link from kselftest.rst
ftrace:
- drop invalid top-level local in test_ownership
- Fix trace_marker_raw test on 64K page kernels"
* tag 'linux_kselftest-next-7.2-rc1-second' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
docs: kselftest: remove link to obsolete wiki
selftests/ftrace: Fix trace_marker_raw test on 64K page kernels
selftests/ftrace: Drop invalid top-level local in test_ownership
Linus Torvalds [Tue, 23 Jun 2026 01:44:48 +0000 (18:44 -0700)]
Merge tag 'erofs-for-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"The most notable change is the removal of the fscache backend: it has
been deprecated for almost two years, mainly because EROFS file-backed
mounts and fanotify pre-content hooks (together with erofs-utils) now
provide better functionality and simpler codebase. In addition,
fscache has depended on netfslib for years, which is undesirable for
EROFS since it is a local filesystem. More details in [1].
In addition, sparse support has been added to the pcluster layout,
which is helpful for large sparse AI datasets, and map requests for
chunk-based inodes have been optimized to be more efficient as well.
There are also the usual fixes and cleanups.
Summary:
- Report more consecutive chunks of the same type for
each iomap request
- Add sparse support for the pcluster layout
- Update the EROFS documentation overview
- Remove the deprecated fscache backend
- Various fixes and cleanups"
Link: https://lore.kernel.org/r/20260622013622.934174-1-hsiangkao@linux.alibaba.com
* tag 'erofs-for-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: handle 48-bit blocks_hi for compressed inodes
erofs: remove fscache backend entirely
erofs: simplify RCU read critical sections
erofs: add sparse support to pcluster layout
erofs: add folio order to trace_erofs_read_folio
erofs: introduce erofs_map_chunks()
erofs: call erofs_exit_ishare() before rcu_barrier()
erofs: update the overview of the documentation
erofs: clean up erofs_ishare_fill_inode()
Tejun Heo [Mon, 22 Jun 2026 17:29:39 +0000 (07:29 -1000)]
sched_ext: Move shared helpers from ext.c into internal.h and cid.h
idle.c and cid.c are included into build_policy.c together with ext.c and
use helpers that ext.c defines. Because the helpers live in ext.c, the two
files can not parse as standalone units and clangd reports errors in them.
Move the helpers to the headers they belong to. The op-dispatch macros and
helpers plus scx_parent() to internal.h, and scx_cpu_arg()/scx_cpu_ret() to
cid.h. No functional change. idle.c and cid.c now parse clean standalone.
Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Andrea Righi <arighi@nvidia.com>
Tejun Heo [Mon, 22 Jun 2026 17:29:39 +0000 (07:29 -1000)]
sched_ext: Make kernel/sched/ext/ sources self-contained for clangd
The sources under kernel/sched/ext/ build as a single translation unit:
build_policy.c includes the source files and headers. An LSP/clangd editor
parses each as a standalone unit, sees no types, and reports a flood of
errors.
Give each header its dependencies and include guard, and have each source
include the headers it uses.
ext.c, arena.c and the ext headers now parse clean standalone. idle.c and
cid.c still reference a few macros and helpers defined in ext.c. The next
patch moves those to shared headers.
Suggested-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Andrea Righi <arighi@nvidia.com>
Linus Torvalds [Mon, 22 Jun 2026 19:43:16 +0000 (12:43 -0700)]
Merge tag 'staging-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver updates from Greg KH:
"Here is the big set of staging driver updates for 7.2-rc1.
Nothing major in here, just constant grind of tiny cleanups and coding
style fixes and wrapper removals. Overall more code was removed than
added, always a nice sign that things are progressing forward.
Changes outside of drivers/staging/ was due to the octeon driver
changes, which for some reason also lives partially in the mips
subsystem, someday that all will be untangled and cleaned up, or just
removed entirely, it's hard to tell which is going to be its fate.
Other than octeon driver cleanups, in here are the usual:
- rtl8723bs driver reworking and cleanups, being the bulk of this
merge window given all of the issues and wrappers involved in that
beast of a driver
- most driver cleanups
- sm750fb driver cleanups (which might be done, as this really should
be moved to the drm layer one of these days...)
- other tiny staging driver cleanups and fixes
All of these have been in linux-next for many weeks with no reported
issues"
* tag 'staging-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (199 commits)
staging: most: video: avoid double free on video register failure
staging: sm750: rename CamelCase variable Bpp to bpp
staging: rtl8723bs: delete superfluous switch statement
staging: sm750fb: Mark g_noaccel, g_nomtrr and g_dualview as __ro_after_init
staging: rtl8723bs: propagate errno through hal xmit path
staging: rtl8723bs: propagate errno through xmit enqueue path
staging: rtl8723bs: convert rtw_xmit_classifier to return errno
staging: rtl8723bs: make rtw_xmit_classifier static
staging: rtl8723bs: simplify rtw_xmit_classifier control flow
staging: rtl8723bs: make _rtw_enqueue_cmd return 0 on success
staging: rtl8723bs: simplify rtw_enqueue_cmd control flow
staging: rtl8723bs: make _rtw_enqueue_cmd static
staging: rtl8723bs: simplify _rtw_enqueue_cmd control flow
staging: rtl8723bs: fix multiple blank lines in more hal/ files
staging: rtl8723bs: remove unused TXDESC_64_BYTES code
staging: rtl8723bs: remove unused DBG_XMIT_BUF and DBG_XMIT_BUF_EXT code
staging: rtl8723bs: fix multiple blank lines in hal/Hal* files
staging: rtl8723bs: fix multiple blank lines in hal/ files
staging: rtl8723bs: rtw_mlme: add blank line for readability
staging: rtl8723bs: rtw_mlme: wrap rtw_sitesurvey_cmd condition
...
Linus Torvalds [Mon, 22 Jun 2026 19:06:22 +0000 (12:06 -0700)]
Merge tag 'spdx-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx
Pull SPDX updates from Greg KH:
"Here is a "big" set of SPDX-like patches for 7.2-rc1. It is the
addition of the ability for the kernel build process to generate a
Software Bill of Materials (SBOM) in the SPDX format, that matches up
exactly with just the files that are actually built for the specific
kernel image generated.
To generate a sbom, after the kernel has been built, just do:
make sbom
and marvel at the JSON file that is generated...
This is needed by users for environments in which a SBOM is required
(medical, automotive, anything shipped in the EU, etc.) and cuts down
by a massive size the "naive" SBOM solution that many vendors have
done by just including _all_ of the kernel files in the resulting
document.
This result is still a giant JSON file, that I am told parses
properly, so we just have to trust that it is properly inclusive as
attempting to parse that thing by hand is impossible.
The scripts here are self-contained python scripts, no additional
libraries or tools to create the SBOM are needed, which is important
for many build systems. Overall it's just a bit over 4000 lines of
"simple" python code, the most complex part is the regex matching
lines, but those are nothing compared to what we maintain in
scripts/checkpatch.pl today...
The various parts where the tool touches the kbuild subsystem have
been acked by the kbuild maintainer, so all should be good here.
All of these patches have been in linux-next for weeks with no
reported problems"
* tag 'spdx-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/spdx:
scripts/sbom: add unit tests for SPDX-License-Identifier parsing
scripts/sbom: add unit tests for command parsers
scripts/sbom: add SPDX build graph
scripts/sbom: add SPDX source graph
scripts/sbom: add SPDX output graph
scripts/sbom: collect file metadata
scripts/sbom: add shared SPDX elements
scripts/sbom: add JSON-LD serialization
scripts/sbom: add SPDX classes
scripts/sbom: add additional dependency sources for cmd graph
scripts/sbom: add cmd graph generation
scripts/sbom: add command parsers
scripts/sbom: setup sbom logging
scripts/sbom: integrate script in make process
scripts/sbom: add documentation
Mark Brown [Wed, 17 Jun 2026 13:00:38 +0000 (14:00 +0100)]
perf bpf: Fix up build failure due to change of btf_vlen() return type
Fix:
util/btf.c: In function '__btf_type__find_member_by_name':
util/btf.c:19:43: error: comparison of integer expressions of different signedness: 'int' and '__u32' {aka 'unsigned int'} [-Werror=sign-compare]
19 | for (i = 0, m = btf_members(t); i < btf_vlen(t); i++, m++) {
| ^
builtin-trace.c: In function 'syscall_arg__strtoul_btf_enum':
builtin-trace.c:967:27: error: comparison of integer expressions of different signedness: 'int' and '__u32' {aka 'unsigned int'} [-Werror=sign-compare]
967 | for (int i = 0; i < btf_vlen(bt); ++i, ++be) {
| ^
by making the variable the same type as the function.
Committer note:
Add an extra hunk from Alan Maguire, fixing btf_enum_scnprintf().
Reviewed-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linus Torvalds [Mon, 22 Jun 2026 18:51:49 +0000 (11:51 -0700)]
Merge tag 'tty-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty / serial driver updates from Greg KH:
"Here is the big set of TTY and Serial driver updates for 7.2-rc1.
Overall we end up removing more code than added, due to an obsolete
synclink_gt driver being removed from the tree, always a nice thing to
see happen.
Other than that driver removal, major things included in here are:
- max310x serial driver updates and fixes
- 8250 driver updates and rework in places to make it more "modern"
- dts file updates
- serial driver core tweaks and updates
- vt code cleanups
- vc_screen crash fixes
- other minor driver updates and cleanups
All of these have been in linux-next for well over a week with no
reported issues"
* tag 'tty-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (49 commits)
serial: 8250_pci: Don't specify conflicting values to pci_device_id members
vc_screen: fix null-ptr-deref in vcs_notifier() during concurrent vcs_write
serial: qcom_geni: Fix RX DMA stall when SE_DMA_RX_LEN_IN is zero
vt: merge ucs_is_zero_width()/ucs_is_double_width() into ucs_get_width()
serial: 8250: fix possible ISR soft lockup
dt-bindings: serial: rs485: remove deprecated .txt binding stub
serial: qcom-geni: trace: Add tracepoint support for Qualcomm GENI serial
tty: serial: Use named initializers for arrays of i2c_device_data
serial: 8250_dw: remove clock-notifier infrastructure
serial: 8250_dw: unregister 8250 port if clk_notifier_register() fails
amba/serial: amba-pl011: Bring back zx29 UART support
serial: 8250: Add support for console flow control
serial: 8250: Check LSR timeout on console flow control
serial: 8250: Set cons_flow on port registration
tty: serial: 8250: protect against NULL uart->port.dev in register
arm64: dts: add support for A9 based Amlogic BY401
dt-bindings: arm: amlogic: add A311Y3 support
serial: max310x: fix compile errors if CONFIG_SPI_MASTER is disabled
serial: qcom-geni: Avoid probing debug console UART without console support
serial: max310x: add comments for PLL limits
...
Linus Torvalds [Mon, 22 Jun 2026 16:30:31 +0000 (09:30 -0700)]
Merge tag 'i2c-7.2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux
Pull more i2c updates from Andi Shyti:
"Cleanups:
- generic cleanups in qcom, qcom-cci and pxa, plus core cleanups in
algo-bit and atr
Fixes:
- davinci: clean up cpufreq notifier on probe failure
- imx-lpi2c: suspend the adapter while hardware is powered down
- ls2x-v2: return IRQ_HANDLED after servicing error interrupts
- stm32f7: fix timing calculation accuracy
* tag 'i2c-7.2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux:
i2c: pxa: Use named initializers for the platform_device_id array
i2c: imx-lpi2c: mark I2C adapter when hardware is powered down
i2c: stm32f7: truncate clock period instead of rounding it
dt-bindings: i2c: microchip,corei2c: permit resets
i2c: qcom: Unify user-visible "Qualcomm" name
i2c: ls2x-v2: return IRQ_HANDLED after servicing an error
i2c: atr: annotate i2c_atr_adap_desc->aliases with __counted_by_ptr
i2c: algo: bit: use str_plural helper in bit_xfer
dt-bindings: i2c: i2c-mux-pinctrl: change maintainer
dt-bindings: i2c: convert i2c-mux-reg to DT schema
i2c: davinci: Unregister cpufreq notifier on probe failure
i2c: qcom-cci: Remove overcautious disable_irq() calls
i2c: qcom-cci: Move cci_init() under cci_reset() function
i2c: qcom-cci: Do not check return value of cci_init()
Linus Torvalds [Mon, 22 Jun 2026 16:24:22 +0000 (09:24 -0700)]
Merge tag 'i3c/for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux
Pull i3c updates from Alexandre Belloni:
"This cycle, there was a lot of work around the mipi-i3c-hci driver
that also led to improvements of the core. We also have support for a
new SoC, the Microchip SAMA7D65. And of course, there are small fixes
for the other controller drivers.
Subsystem:
- introduce dynamic address reconciliation after DAA
- add preliminary API for hub support
- fixes for dev_nack_retry_count handling
- move hot-join support in the core instead of open coding in
different drivers
Drivers:
- mipi-i3c-hci-pci: DMA abort, recovery and related improvements,
hot-join support, Microchip SAMA7D65 support, fix possible race in
IBI handling
- dw-i3c-master: fix IBI count register selection for versalnet
- svc: interrupt handling fixes for NPCM845"
* tag 'i3c/for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (45 commits)
i3c: mipi-i3c-hci: Use named initializers for platform_device_id's .driver_data
i3c: master: Use unsigned int for dev_nack_retry_count consistently
i3c: master: Add missing runtime PM get in dev_nack_retry_count_store()
i3c: master: Update dev_nack_retry_count under maintenance lock
i3c: master: Expose the APIs to support I3C hub
i3c: master: rename i3c_master_reattach_i3c_dev() to *_locked
i3c: mipi-i3c-hci: add microchip sama7d65 SoC compatible with the required quirk
dt-bindings: i3c: mipi-i3c-hci: add Microchip SAMA7D65 compatible
i3c: Consistently define pci_device_ids using named initializers
i3c: master: Reconcile dynamic addresses after DAA
i3c: master: Move DAA API functions after i3c_master_add_i3c_dev_locked()
i3c: master: Make i3c_master_add_i3c_dev_locked() return void
i3c: mipi-i3c-hci: Tolerate i3c_master_add_i3c_dev_locked() failures in DAA
i3c: master: Prevent reuse of dynamic address on device add failure
i3c: mipi-i3c-hci: Ignore DISEC failures when disabling IBIs
i3c: mipi-i3c-hci: Fix race in i3c_hci_addr_to_dev()
i3c: mipi-i3c-hci: Add Hot-Join support
i3c: master: Export i3c_master_enec_disec_locked()
i3c: master: Defer new-device registration out of DAA caller context
i3c: dw: Drop redundant Hot-Join cancel_work_sync() in shutdown
...
The driver allocates domain generic chips using
irq_alloc_domain_generic_chips() during probe and sets up chained
handlers using irq_set_chained_handler_and_data(). However, on driver
removal, the generic chips are not freed and the chained handlers are
not removed.
The generic chips remain on the global gc_list and may later be accessed by
generic interrupt chip suspend, resume, or shutdown callbacks after the
driver has been removed, potentially resulting in a use-after-free and
kernel crash.
The chained handlers that were installed in probe for peripheral and
syswake interrupts are also left dangling, which can lead to spurious
interrupts accessing freed memory.
Fix these issues by:
- Setting IRQ_DOMAIN_FLAG_DESTROY_GC flag in domain->flags, so the
core code automatically removes generic chips when irq_domain_remove()
is called
- Clearing all chained handlers with NULL in pdc_intc_remove()
Fixes: b6ef9161e43a ("irq-imgpdc: add ImgTec PDC irqchip driver") Signed-off-by: Qingshuang Fu <fuqingshuang@kylinos.cn> Signed-off-by: Thomas Gleixner <tglx@kernel.org> Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20260618021352.661773-1-fffsqian@163.com
Tejun Heo [Mon, 22 Jun 2026 15:32:54 +0000 (05:32 -1000)]
sched_ext: Move sources under kernel/sched/ext/
The sched_ext sources had grown to ten ext* files directly under
kernel/sched/. Move them into a new kernel/sched/ext/ subdirectory and drop
the now-redundant ext_ prefix. ext.c/h keep their names.
The include paths in build_policy.c and sched.h, the MAINTAINERS glob, and a
few documentation and comment references are updated to match. No code or
symbol changes.
Linus Torvalds [Mon, 22 Jun 2026 15:28:48 +0000 (08:28 -0700)]
Merge tag 'slab-for-7.2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull more slab updates from Vlastimil Babka:
- Introduce and wire up a new alloc_flags parameter for modifying
slab-specific behavior without adding or reusing gfp flags. Also
introduce slab_alloc_context to keep function parameter bloat in
check. Both are similar to what the page allocator does.
kmalloc_flags() exposes alloc_flags for mm-internal users.
- SLAB_ALLOC_NOLOCK flag is used to implement kmalloc_nolock()
behavior without relying on lack of __GFP_RECLAIM, which caused
false positives with workarounds like fd3634312a04 ("debugobject:
Make it work with deferred page initialization - again").
- SLAB_ALLOC_NO_RECURSE replaces __GFP_NO_OBJ_EXT, which could have
been removed, but pending memory allocation profiling changes in
mm tree have grown a new user - there is however a work ongoing
to replace that too, so __GFP_NO_OBJ_EXT should eventually be
removed. (Vlastimil Babka)
- Add kmem_buckets_alloc_track_caller() with a user to be added in the
net tree (Pedro Falcato)
- Fixes for kernel-doc and slabinfo (Randy Dunlap, Yichong Chen)
* tag 'slab-for-7.2-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
tools/mm/slabinfo: fix total_objects attribute name
slab: recognize @GFP parameter as optional in kernel-doc
mm/slab: add a node-track-caller variant for kmem buckets allocation
mm/slab: replace __GFP_NO_OBJ_EXT with SLAB_ALLOC_NO_RECURSE for sheaves
mm/slab: remove __GFP_NO_OBJ_EXT usage from alloc_slab_obj_exts()
mm/slab: introduce kmalloc_flags()
mm/slab: allow __GFP_NOMEMALLOC and __GFP_NOWARN for kmalloc_nolock()
mm/slab: pass slab_alloc_context to __do_kmalloc_node()
mm/slab: allow kmem_cache_alloc_bulk() with any gfp flags
mm/slab: replace slab_alloc_node() parameters with slab_alloc_context
mm/slab: pass alloc_flags through slab_post_alloc_hook() chain
mm/slab: pass alloc_flags to new slab allocation
mm/slab: add alloc_flags to slab_alloc_context
mm/slab: replace struct partial_context with slab_alloc_context
mm/slab: introduce alloc_flags and SLAB_ALLOC_NOLOCK
mm/slab: introduce slab_alloc_context
mm/slab: stop inlining __slab_alloc_node()
mm/slab: do not init any kfence objects on allocation
Linus Torvalds [Mon, 22 Jun 2026 15:06:13 +0000 (08:06 -0700)]
Merge tag 'hyperv-next-signed-20260621' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv updates from Wei Liu:
- Use wakeup mailbox to boot APs in Hyper-V VTL2 TDX guests (Yunhong
Jiang, Ricardo Neri)
- Move the Hyper-V IOMMU to its own subdirectory (Mukesh Rathor)
- Cosmetic changes to mshv and balloon driver (Junrui Luo, Markus
Elfring)
* tag 'hyperv-next-signed-20260621' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
mshv: add bounds check on vp_index in mshv_intercept_isr()
hv_balloon: Simplify data output in hv_balloon_debug_show()
x86/hyperv: Cosmetic changes in irqdomain.c for readability
iommu/hyperv: Create hyperv subdirectory under drivers/iommu
x86/hyperv/vtl: Use the wakeup mailbox to boot secondary CPUs
x86/hyperv/vtl: Mark the wakeup mailbox page as private
x86/acpi: Add a helper to get the address of the wakeup mailbox
x86/hyperv/vtl: Setup the 64-bit trampoline for TDX guests
x86/realmode: Make the location of the trampoline configurable
x86/hyperv/vtl: Set real_mode_header in hv_vtl_init_platform()
x86/dt: Parse the Wakeup Mailbox for Intel processors
dt-bindings: reserved-memory: Wakeup Mailbox for Intel processors
x86/acpi: Add functions to setup and access the wakeup mailbox
x86/topology: Add missing struct declaration and attribute dependency
Linus Torvalds [Mon, 22 Jun 2026 14:43:48 +0000 (07:43 -0700)]
Merge tag 's390-7.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Alexander Gordeev:
- consolidate s390 idle time accounting by moving all CPU time tracking
to the architecture backend and eliminate the mix of architecture-
specific and common code accounting
- Add missing EXPORT_SYMBOL_GPL() to kcpustat_field_idle() and
kcpustat_field_iowait() functions
- Finalize ptep_get() conversion by replacing direct page table entry
dereferencing with proper accessors (ptep_get(), pmdp_get(), etc.)
- Explicitly check the buffer length in PKEY_VERIFYPROTK ioctl and
pkey_pckmo implementations and fail if the length is exceeded
* tag 's390-7.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/pkey: Check length in pkey_pckmo handler implementation
s390/pkey: Check length in PKEY_VERIFYPROTK ioctl
s390/idle: Add missing EXPORT_SYMBOL_GPL()
s390/mm: Complete ptep_get() conversion
s390/idle: Remove idle time and count sysfs files
s390/idle: Provide arch specific kcpustat_field_idle()/kcpustat_field_iowait()
s390/irq/idle: Use stcke instead of stckf for time stamps
s390/timex: Move union tod_clock type to separate header
Zhan Xusheng [Mon, 22 Jun 2026 08:11:36 +0000 (16:11 +0800)]
erofs: handle 48-bit blocks_hi for compressed inodes
Combine i_nb.blocks_hi with i_u.blocks_lo when computing
inode->i_blocks for compressed inodes, mirroring the startblk_hi
handling for unencoded inodes a few lines above. Also evaluate
the shift in u64 to avoid truncation.
Gao Xiang [Mon, 22 Jun 2026 01:36:22 +0000 (09:36 +0800)]
erofs: remove fscache backend entirely
EROFS over fscache was introduced to provide image lazy pulling
functionality. After the feature landed, the fscache subsystem made
netfs a new hard dependency, which is unexpected for a local filesystem
and has an kernel-defined caching hierarchy which could be inflexible
compared to the fanotify pre-content hooks. Therefore, this feature has
been deprecated for almost two years.
As EROFS file-backed mounts and fanotify pre-content hooks both upstream
for a while and already providing equivalent functionality (erofs-utils
has supported fanotify pre-content hooks), let's remove the fscache
backend now.
The main application of this feature is Nydus [1], and they plan to move
to use fanotify pre-content hooks in the near future too.
I hope this patch can be merged into Linux 7.2, which is also motivated
by newly found implementation issues [2][3] that are not worth
investigating given the deprecation and limited development resources.
The associated fscache/cachefiles cleanup patch will follow separately
through the vfs tree (netfs) later: it seems fine since the codebase is
isolated by CONFIG_CACHEFILES_ONDEMAND.
Gao Xiang [Sun, 21 Jun 2026 19:44:14 +0000 (03:44 +0800)]
erofs: add sparse support to pcluster layout
Although zeros can be compressed transparently on EROFS using fixed-size
output compression so that it is never prioritized in the Android use
cases, indicating entire pclusters as holes is still useful to preserve
holes in the sparse datasets; otherwise overlayfs will allocate more
space when copying up, and SEEK_HOLE won't report any hole.
This patch introduces two ways to mark a pcluster as a hole:
- A new Z_EROFS_LI_HOLE compatible flag (bit 14) in the HEAD lcluster
advise field for non-compact (full) indexes;
- A 0-block CBLKCNT value on the first NONHEAD lcluster.
The hole tag is preferred for maximum compatibility since pre-existing
kernels that do not understand Z_EROFS_LI_HOLE will decompress at the
stored blkaddr (the same blkaddr will be shared among all sparse
pclusters). Only the 0-block CBLKCNT approach also works for compact
indexes, but it is limited to big pclusters and new kernels.
Linus Torvalds [Sun, 21 Jun 2026 21:09:49 +0000 (14:09 -0700)]
lib: Add stale 'raid6' directory to .gitignore file
I keep having to do this, because people think they can just move
directories around and move the gitignore files around with them.
You really can't do that - the old generated files stay around for
others, and still need to be ignored in the old location.
So when moving gitignore entries around because you moved the files (or
when moving a whole gitignore file around because the directory it was
in moved), the old gitignore situation needs to be dealt with.
Yes, those files may have moved in *your* tree when you moved the
directory. And yes, new repositories will never even have seen them.
But all those other developers that see the result of your move still
likely have a working tree with the old state, and the files that were
hidden from git by an old gitignore file do not suddenly become
relevant.
Fixes: 3626738bc714 ("raid6: move to lib/raid/") Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 21 Jun 2026 20:20:19 +0000 (13:20 -0700)]
Merge tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull non-MM updates from Andrew Morton:
- "taskstats: fix TGID dead-thread stat retention" (Yiyang Chen)
Fix a taskstats TGID aggregation bug where fields added in the TGID
query path were not preserved after thread exit, and adds a kselftest
covering the regression.
Fix a number of possible issues in the ocfs2 xattr code
- "lib and lib/cmdline enhancements" (Dmitry Antipov)
Provide additional robustness checking in the cmdline handling code
and its in-kernel testing and selftests
- "cleanup the RAID6 P/Q library" (Christoph Hellwig)
Clean up the RAID6 P/Q library to match the recent updates to the
RAID 5 XOR library and other CRC/crypto libraries
- "ocfs2: harden inode validators against forged metadata" (Michael
Bommarito)
Add three structural checks to OCFS2 dinode validation so malformed
on-disk fields are rejected before ocfs2_populate_inode() copies them
into the in-core inode
- "lib/raid: replace __get_free_pages() call with kmalloc()" (Mike
Rapoport)
Clean up the lib/raid code by using kmalloc() in more places
* tag 'mm-nonmm-stable-2026-06-21-10-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (108 commits)
ocfs2: fix circular locking dependency in ocfs2_dio_end_io_write
ocfs2: fix NULL h_transaction deref in ocfs2_assure_trans_credits
lib: interval_tree_test: validate benchmark parameters
ocfs2: avoid moving extents to occupied clusters
treewide: fix transposed "sign" typos and update spelling.txt
ocfs2: fix UBSAN array-index-out-of-bounds in ocfs2_sum_rightmost_rec
fat: reject BPB volumes whose data area starts beyond total sectors
selftests/uevent: increase __UEVENT_BUFFER_SIZE to avoid ENOBUFS on busy systems
lib/test_firmware: allocate the configured into_buf size
fs: efs: remove unneeded debug prints
checkpatch: cuppress warnings when Reported-by: is followed by Link:
MAINTAINERS: add Alexander as a kcov reviewer
mailmap: update Alexander Sverdlin's Email addresses
fs: fat: inode: replace sprintf() with scnprintf()
ocfs2: fix out-of-bounds write in ocfs2_remove_refcount_extent
ocfs2: fix race between ocfs2_control_install_private() and ocfs2_control_release()
ocfs2/dlm: require a ref for locking_state debugfs open
ocfs2: reject FITRIM ranges shorter than a cluster
ocfs2: validate fast symlink target during inode read
ocfs2: add journal NULL check in ocfs2_checkpoint_inode()
...
Linus Torvalds [Sun, 21 Jun 2026 19:25:17 +0000 (12:25 -0700)]
Merge tag 'mtd/for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull mtd updates from Miquel Raynal:
"NAND changes:
- Extend SPI NAND continuous read to Winbond devices, which requires
numerous changes in the spi-{mem,nand} layers such as the need for
a secondary read operation template
- Continuous reads in general have also been enhanced/fixed for
avoiding potential issues at probe time and at block boundaries
SPI NOR changes:
- Big set of cleanups and improvements to the locking support.
This series contains some cleanups and bug fixes for code and
documentation around write protection. Then support is added for
complement locking, which allows finer grained configuration of
what is considered locked and unlocked. Then complement locking is
enabled on a bunch of Winbond W25 flashes
- Fix die erase support on Spansion flashes.
Die erase is only supported on multi-die flashes, but the die erase
opcode was set for all. When the opcode is set, it overrides the
default chip erase opcode which should be used for single-die
flashes. Only set the opcode on multi-die flashes. Also, the opcode
was not set on multi-die s28hx-t flashes. Set it so they can use
die-erase correctly
General changes:
- A few drivers and mappings have been removed following SoCs support
removal
- And again, there is the usual load of misc improvements and fixes"
* tag 'mtd/for-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (63 commits)
mtd: cfi: Use common error handling code in two functions
mtd: slram: simplify register_device() cleanup
mtd: slram: remove failed entries from the device list
mtd: rawnand: ndfc: use ioread32be/iowrite32be and allow COMPILE_TEST
mtd: spi-nor: spansion: add die erase support in s28hx-t
mtd: spi-nor: spansion: use die erase for multi-die devices only
mtd: spi-nor: winbond: Add W25Q02NWxxIM CMP locking support
mtd: spi-nor: winbond: Add W25Q01NWxxIM CMP locking support
mtd: spi-nor: winbond: Add W25Q01NWxxIQ CMP locking support
mtd: spi-nor: winbond: Add W25H02NWxxAM CMP locking support
mtd: spi-nor: winbond: Add W25H01NWxxAM CMP locking support
mtd: spi-nor: winbond: Add W25H512NWxxAM CMP locking support
mtd: spi-nor: Add steps for testing locking with CMP
mtd: spi-nor: swp: Add support for the complement feature
mtd: spi-nor: Add steps for testing locking support
mtd: maps: remove obsolete impa7 map driver
mtd: maps: remove uclinux map driver
mtd: maps: remove AMD Élan specific drivers
mtd: inftlmount: convert printk(KERN_WARNING) to pr_warn
mtd: Consistently define pci_device_ids
...
This patch caused a significant performance regression, so revert it, and
we can determine whether the approach is sensible or not moving forwards,
and if so how to avoid this.
There was a merge conflict with commit de97ae6222c1 ("mm/readahead: no
PG_readahead on EOF"), care was taken to ensure that the revert retained
the behaviour of this patch and cleanly reverts commit 7b32f64bc512 ("mm:
limit filemap_fault readahead to VMA boundaries") only.
Link: https://lore.kernel.org/20260619112852.104213-1-ljs@kernel.org Fixes: 7b32f64bc512 ("mm: limit filemap_fault readahead to VMA boundaries") Signed-off-by: Lorenzo Stoakes <ljs@kernel.org> Reported-by: kernel test robot <oliver.sang@intel.com> Closes: https://lore.kernel.org/oe-lkp/202606181547.617a6967-lkp@intel.com Acked-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Pedro Falcato <pfalcato@suse.de> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Jan Kara <jack@suse.cz> Cc: Kalesh Singh <kaleshsingh@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Ben Dooks [Tue, 16 Jun 2026 09:59:06 +0000 (10:59 +0100)]
mm/vmscan: pass NULL to trace vmscan node reclaim
The tracepoint for node relcaims takes a `struct mem_cgroup *`
as the third argument, so pass NULL instead of 0 to fix warning
about using an integer as a pointer.
Fixes the following warnings:
mm/vmscan.c:6753:66: warning: Using plain integer as NULL pointer
mm/vmscan.c:6757:58: warning: Using plain integer as NULL pointer
mm/vmscan.c:7818:60: warning: Using plain integer as NULL pointer
selftests/mm: fix exclusive_cow test fork() handling
The test ignores the return value of fork(), so both the parent and the
(newly created) child run the COW verification loops and then call
hmm_buffer_free() before returning into the kselftest harness, which
_exit()s each side. This duplicated teardown sequence has been observed
to manifest as a SIGSEGV in the test child, e.g.:
hmm-tests[360141]: segfault (11) at 0 nip 10006964 lr 1000ac3c code 1
in hmm-tests[6964,10000000+30000]
Fix this by adopting the same fork()-then-wait pattern already used by the
nearby anon_write_child / anon_write_child_shared tests in this file: the
child performs the COW verification and then _exit(0)s so it does not run
the test teardown, while the parent independently verifies COW, waits for
the child, and only then frees the buffer.
Link: https://lore.kernel.org/20260611034102.1030738-4-aboorvad@linux.ibm.com Fixes: b659baea75469 ("mm: selftests for exclusive device memory") Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com> Cc: Alex Sierra <alex.sierra@amd.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Balbir Singh <balbirs@nvidia.com> Cc: David Hildenbrand <david@kernel.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Ralph Campbell <rcampbell@nvidia.com> Cc: Sayali Patil <sayalip@linux.ibm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 11 Jun 2026 03:41:01 +0000 (09:11 +0530)]
selftests/mm: remove hardcoded THP sizing assumptions in hmm tests
migrate_partial_unmap_fault() and migrate_remap_fault() use hardcoded
offsets based on a 2MB PMD size. Similarly, benchmark_thp_migration()
assumes a fixed 2MB THP size when generating test buffer sizes.
Derive offsets and test sizes from the runtime PMD page size returned by
read_pmd_pagesize(). If unavailable, fall back to TWOMEG. This allows
the tests to adapt correctly on systems where PMD-sized THP differs from
2MB. Also replace the fixed 1MB unmap size with a PMD-relative value
derived from the runtime PMD size.
On systems with larger PMD sizes, computed test buffer sizes can exceed
INT_MAX. Skip such test cases to avoid overflow.
Link: https://lore.kernel.org/20260611034102.1030738-3-aboorvad@linux.ibm.com Fixes: 24c2c5b8ffbd ("selftests/mm/hmm-tests: partial unmap, mremap and anon_write tests") Fixes: 271a7b2e3c13 ("selftests/mm/hmm-tests: new throughput tests including THP") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com> Acked-by: Balbir Singh <balbirs@nvidia.com> Cc: Alex Sierra <alex.sierra@amd.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: David Hildenbrand <david@kernel.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Ralph Campbell <rcampbell@nvidia.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 11 Jun 2026 03:41:00 +0000 (09:11 +0530)]
selftests/mm: allow PUD-level entries in compound testcase of hmm tests
Patch series "selftests/mm: assorted fixes for hmm-tests", v3.
This series fixes a few issues in hmm-tests that show up when page-size
and huge-page configuration differ from the hardcoded assumptions the
tests were written for (PMD/THP sizing, default hugepage size, and related
cases).
It also includes a fix to exclusive_cow: the test ignored the return value
of fork(), so both parent and child ran the same teardown path.
This patch (of 3):
The HMM compound testcase currently assumes only PMD-level mappings and
fails on systems where default_hugepagesz=1G is set, because the region is
then reported by the device at PUD level.
Determine the mapping level (PMD or PUD) the device reports for the first
page of the range and require every page to match that level exactly via
ASSERT_EQ(). This accepts PUD-level mappings while preserving the
expected/observed protection values printed on failure, and rejects a
fragmented mapping that mixes PMD- and PUD-level entries within the same
range (which a per-page OR check would have let pass).
Link: https://lore.kernel.org/20260611034102.1030738-1-aboorvad@linux.ibm.com Link: https://lore.kernel.org/20260611034102.1030738-2-aboorvad@linux.ibm.com Fixes: e478425bec93 ("mm/hmm: add tests for hmm_pfn_to_map_order()") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Co-developed-by: Aboorva Devarajan <aboorvad@linux.ibm.com> Signed-off-by: Aboorva Devarajan <aboorvad@linux.ibm.com> Cc: Alex Sierra <alex.sierra@amd.com> Cc: Alistair Popple <apopple@nvidia.com> Cc: Balbir Singh <balbirs@nvidia.com> Cc: David Hildenbrand <david@kernel.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Ralph Campbell <rcampbell@nvidia.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Samuel Moelius [Tue, 9 Jun 2026 00:48:15 +0000 (00:48 +0000)]
mm/gup_test: reject wrapped user ranges
gup_test accepts an address and size from the debugfs ioctl and repeatedly
compares against addr + size. If that addition wraps, the loop can be
skipped and the ioctl returns success with size rewritten to zero.
Compute the end address once with overflow checking and use that checked
end for the loop bounds.
Assisted-by: Codex:gpt-5.5-cyber-preview Link: https://lore.kernel.org/20260609004814.1240586.6294d614ac80.gup-test-range-end-wrap@trailofbits.com Signed-off-by: Samuel Moelius <sam.moelius@trailofbits.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Samuel Moelius [Fri, 5 Jun 2026 18:41:52 +0000 (18:41 +0000)]
mm/page_frag: reject invalid CPUs in page_frag_test
The page_frag selftest module accepts test_push_cpu and test_pop_cpu as
signed module parameters, then validates them by passing them directly to
cpu_active().
That validation is itself unsafe for negative or out-of-range CPU numbers.
For example, test_push_cpu=-1 is converted to a very large unsigned CPU
number before cpu_active() reaches cpumask_test_cpu(), which trips the
cpumask range check with CONFIG_DEBUG_PER_CPU_MAPS enabled.
Reject CPU values outside [0, nr_cpu_ids) before asking whether the CPU is
active.
Assisted-by: Codex:gpt-5.5-cyber-preview Link: https://lore.kernel.org/20260605184157.2490353-1-sam.moelius@trailofbits.com Signed-off-by: Samuel Moelius <sam.moelius@trailofbits.com> Cc: David Hildenbrand <david@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
SeongJae Park [Fri, 5 Jun 2026 01:38:48 +0000 (18:38 -0700)]
mm/damon/core: always put unsuccessfully committed target pids
damon_commit_target() puts and gets the destination and the source target
pids. It puts the destination target pid because it will be overwritten
by the source target pid. It gets the source pid because the caller is
supposed to eventually put the pids. In more detail, the caller will call
damon_destroy_ctx() after damon_commit_ctx() to destroy the entire source
context. And in this case, [f]vaddr operation set's cleanup_target()
callback will put the pids.
The commit operation is made at the context level. The operation can fail
in multiple places including in the middle and after the targets commit
operations. For any such failures, immediately the error is returned to
the damon_commit_ctx() caller. If some or all of the source target pids
were committed to the destination during the unsuccessful context commit
attempt, those pids should be put twice.
The source context will do the put operations using the above explained
routine. However, let's suppose the destination context was not
originally using [f]vaddr operation set and the commit failed before the
ops of the source context is committed. The destination does not have the
cleanup_target() ops callback, so it cannot put the pids via the
damon_destroy_ctx().
As a result, the pids are leaked. The issue in the real world would be
not very common. The commit feature is for changing parameters of running
DAMON context while inheriting internal status like the monitoring
results. The monitoring results of a physical address range ain't have
things that are beneficial to be inherited to a virtual address ranges
monitoring. So the problem-causing DAMON control would be not very common
in the real world. That said, it is a supported feature. And
damon_commit_target() failure due to memory allocation is relatively
realistic [1] if there are a huge number of target regions.
Fix by putting the pids in the commit operation in case of the failures.
Kaitao Cheng [Tue, 2 Jun 2026 13:07:55 +0000 (21:07 +0800)]
mm: page_isolation: avoid unsafe folio reads while scanning compound pages
page_is_unmovable() can inspect compound pages without holding a folio
reference or any lock. The folio can therefore be freed, split or reused
while the scanner is still looking at it.
The existing HugeTLB handling already avoids folio_hstate() for this
reason, but it still derives the hstate from folio_size() and later
derives the scan step from folio_nr_pages() and folio_page_idx(). These
helpers rely on the folio still being a valid folio head. If the folio
changed concurrently, the scanner can read inconsistent folio metadata and
compute a wrong step. In the worst case, folio_nr_pages() can return 1
for what used to be a tail page and the subtraction from folio_page_idx()
can underflow.
There is a similar issue for non-Hugetlb compound pages: folio_test_lru()
expects a valid folio. If the previously observed head page has been
reused as a tail page of another compound page, the folio flag checks can
trigger VM_BUG_ON_PGFLAGS().
Read the compound order once with compound_order(), reject obviously bogus
orders, and derive the hstate and scan step from that order instead of
querying folio size information again. Also use PageLRU(page), which is
safe for the page being scanned, instead of folio_test_lru() on a
potentially stale folio pointer.
Treat an unknown HugeTLB hstate as unmovable so the scanner does not try
to skip over an unstable HugeTLB folio.
Link: https://lore.kernel.org/20260602130755.38794-1-kaitao.cheng@linux.dev Fixes: a0a9f2180b90 ("mm: page_isolation: avoid calling folio_hstate() without hugetlb_lock") Signed-off-by: Kaitao Cheng <chengkaitao@kylinos.cn> Reviewed-by: Zi Yan <ziy@nvidia.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Acked-by: Oscar Salvador (SUSE) <osalvador@kernel.org> Cc: Brendan Jackman <jackmanb@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Liu Shixin <liushixin2@huawei.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Muchun Song <muchun.song@linux.dev> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Shakeel Butt [Wed, 10 Jun 2026 23:20:48 +0000 (16:20 -0700)]
mm/shrinker: do not hold RCU lock in shrinker_debugfs_count_show()
Reading the debugfs "count" file of a memcg-aware shrinker can sleep
inside an RCU read-side critical section:
BUG: sleeping function called from invalid context at kernel/cgroup/rstat.c:421
RCU nest depth: 1, expected: 0
css_rstat_flush
mem_cgroup_flush_stats
zswap_shrinker_count
shrinker_debugfs_count_show
shrinker_debugfs_count_show() invokes the ->count_objects() callback under
rcu_read_lock(). The zswap callback flushes memcg stats via
css_rstat_flush(), which may sleep, so it must not run under RCU.
The RCU lock is not needed here. mem_cgroup_iter() takes RCU internally
and returns a memcg holding a css reference (dropped on the next iteration
or by mem_cgroup_iter_break()), so the memcg stays alive without it. The
shrinker is kept alive by the open debugfs file: shrinker_free() removes
the debugfs entries via debugfs_remove_recursive(), which waits for
in-flight readers to drain, before call_rcu(..., shrinker_free_rcu_cb).
The sibling "scan" handler already invokes the sleeping ->scan_objects()
callback with no RCU section.
The droppable test currently relies on creating memory pressure in a child
process to trigger dropping the droppable pages.
That not only takes a long time on some machines (allocating and filling
all that memory), on large machines this will not work as we hardcode the
area size to 134217728 bytes.
... further, we rely on timeouts to detect that memory was not dropped,
which is really suboptimal.
Instead, let's just use MADV_PAGEOUT on a 2 MiB region. MADV_PAGEOUT
works with droppable memory even without swap.
There is the low chance of MADV_PAGEOUT failing to drop a page because of
speculative references. We'll wait 1s and retry 10 times to rule that
unlikely case out as best as we can.
On a machine without swap:
$ ./droppable
TAP version 13
1..1
ok 1 madvise(MADV_PAGEOUT) behavior
# Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0
Link: https://lore.kernel.org/20260611-droppable_test-v1-1-b6a73d99f658@kernel.org Fixes: 9651fcedf7b9 ("mm: add MAP_DROPPABLE for designating always lazily freeable mappings") Signed-off-by: David Hildenbrand (Arm) <david@kernel.org> Reported-by: Aishwarya TCV <Aishwarya.TCV@arm.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Tested-by: Lance Yang <lance.yang@linux.dev> Reviewed-by: Dev Jain <dev.jain@arm.com> Reviewed-by: SeongJae Park <sj@kernel.org> Tested-by: Lorenzo Stoakes <ljs@kernel.org> Reviewed-by: Lorenzo Stoakes <ljs@kernel.org> Reviewed-by: Jason A. Donenfeld <Jason@zx2c4.com> Cc: Anthony Yznaga <anthony.yznaga@oracle.com> Cc: Liam R. Howlett <liam@infradead.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
writeout is only called from pageout, and a straight flow at the end, so
merge the two functions.
Link: https://lore.kernel.org/20260601113449.3464734-3-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Baoquan He <baoquan.he@linux.dev> Reviewed-by: Nhat Pham <nphamcs@gmail.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Cc: Chris Li <chrisl@kernel.org> Cc: Kairui Song <kasong@tencent.com> Cc: Kemeng Shi <shikemeng@huaweicloud.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Hao Ge [Tue, 26 May 2026 09:26:41 +0000 (17:26 +0800)]
MAINTAINERS: add Hao Ge as reviewer for codetag and alloc_tag
I've been contributing to the codetag and alloc_tag subsystems since 2024,
Memory allocation profiling is indeed a great tool and I'd like to stay
involved as a reviewer to keep up with ongoing development and not miss
any of the details. I'm happy to help review patches and contribute to
the ongoing development of this subsystem.
Link: https://lore.kernel.org/20260526092641.299399-1-hao.ge@linux.dev Signed-off-by: Hao Ge <hao.ge@linux.dev> Acked-by: Suren Baghdasaryan <surenb@google.com> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: "David Hildenbrand (Arm)" <david@kernel.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:53 +0000 (12:17 +0530)]
selftests/mm: clarify alternate unmapping in compaction_test
Add a comment explaining that every other entry in the list is unmapped to
intentionally create fragmentation with locked pages before invoking
check_compaction().
Link: https://lore.kernel.org/da5e0a8d5152e54152c0d2f456aac2fac35af291.1779296493.git.sayalip@linux.ibm.com Fixes: bd67d5c15cc1 ("Test compaction of mlocked memory") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:52 +0000 (12:17 +0530)]
selftests/mm: move hwpoison setup into run_test() and silence modprobe output for memory-failure category
run_vmtests.sh contains special handling to ensure the hwpoison_inject
module is available for the memory-failure tests. This logic was
implemented outside of run_test(), making the setup category-specific but
managed globally.
Move the hwpoison_inject handling into run_test() and restrict it
to the memory-failure category so that:
1. the module is checked and loaded only when memory-failure tests run,
2. the test is skipped if the module or the debugfs interface
(/sys/kernel/debug/hwpoison/) is not available.
3. the module is unloaded after the test if it was loaded by the script.
This localizes category-specific setup and makes the test flow
consistent with other per-category preparations.
While updating this logic, fix the module availability check.
The script previously used:
modprobe -R hwpoison_inject
The -R option prints the resolved module name to stdout, causing every
run to print:
hwpoison_inject
in the test output, even when no action is required, introducing
unnecessary noise.
Replace this with:
modprobe -n hwpoison_inject
which verifies that the module is loadable without producing output,
keeping the selftest logs clean and consistent.
Also, ensure that skipped tests do not override a previously recorded
failure. A skipped test currently sets exitcode to ksft_skip even if a
prior test has failed, which can mask failures in the final exit status.
Update the logic to only set exitcode to ksft_skip when no failure has
been recorded.
Link: https://lore.kernel.org/93441f34f7ef5add47d1a130d03daa79e21b5050.1779296493.git.sayalip@linux.ibm.com Fixes: ff4ef2fbd101 ("selftests/mm: add memory failure anonymous page test") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Reviewed-by: Miaohe Lin <linmiaohe@huawei.com> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This can occur on systems with large hugepage sizes (e.g. 1GB) and a high
number of CPUs, where the total allocated memory is sufficient overall but
not enough to provide at least one page per cpu.
In such cases, the failure is due to insufficient test resources rather
than incorrect kernel behaviour. Update the test to treat this condition
as a test skip instead of reporting an error.
[sayalip@linux.ibm.com: use ksft_exit_skip() instead of KSFT_SKIP] Link: https://lore.kernel.org/88202b56-1dc5-43e2-9d1f-a0823a9531f0@linux.ibm.com Link: https://lore.kernel.org/0707e9a0f1b3dd904c4a069b91db317f9c160faa.1779296493.git.sayalip@linux.ibm.com Fixes: db0f1c138f18 ("selftests/mm: print some details when uffd-stress gets bad params") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Acked-by: Zi Yan <ziy@nvidia.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:50 +0000 (12:17 +0530)]
selftests/mm: skip uffd-wp-mremap if UFFD write-protect is unsupported
The uffd-wp-mremap test requires the UFFD_FEATURE_PAGEFAULT_FLAG_WP
capability. On systems where userfaultfd write-protect is not supported,
uffd_register() fails and the test reports failures.
Check for the required feature at startup and skip the test when the
UFFD_FEATURE_PAGEFAULT_FLAG_WP capability is not present, preventing false
failures on unsupported configurations.
Before patch:
running ./uffd-wp-mremap
------------------------
[INFO] detected THP size: 256 KiB
[INFO] detected THP size: 512 KiB
[INFO] detected THP size: 1024 KiB
[INFO] detected THP size: 2048 KiB
[INFO] detected hugetlb page size: 2048 KiB
[INFO] detected hugetlb page size: 1048576 KiB
1..24
[RUN] test_one_folio(size=65536, private=false, swapout=false,
hugetlb=false)
not ok 1 uffd_register() failed
[RUN] test_one_folio(size=65536, private=true, swapout=false,
hugetlb=false)
not ok 2 uffd_register() failed
[RUN] test_one_folio(size=65536, private=false, swapout=true,
hugetlb=false)
not ok 3 uffd_register() failed
[RUN] test_one_folio(size=65536, private=true, swapout=true,
hugetlb=false)
not ok 4 uffd_register() failed
[RUN] test_one_folio(size=262144, private=false, swapout=false,
hugetlb=false)
not ok 5 uffd_register() failed
[RUN] test_one_folio(size=524288, private=false, swapout=false,
hugetlb=false)
not ok 6 uffd_register() failed
.
.
.
Bail out! 24 out of 24 tests failed
Totals: pass:0 fail:24 xfail:0 xpass:0 skip:0 error:0
[FAIL]
not ok 1 uffd-wp-mremap # exit=1
After patch:
running ./uffd-wp-mremap
------------------------
1..0 # SKIP uffd-wp feature not supported
[SKIP]
ok 1 uffd-wp-mremap # SKIP
Link: https://lore.kernel.org/c3c5af76d71d5f4446f773f4de94882efc33ebe4.1779296493.git.sayalip@linux.ibm.com Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:49 +0000 (12:17 +0530)]
selftests/mm: ensure destination is hugetlb-backed in hugetlb-mremap
The hugetlb-mremap selftest reserves the destination address using a
anonymous base-page mapping before calling mremap() with MREMAP_FIXED,
while the source region is hugetlb-backed.
When remapping a hugetlb mapping into a base-page VMA may fail with:
mremap: Device or resource busy
This is observed on powerpc hash MMU systems where slice constraints and
page size incompatibilities prevent the remap.
Ensure the destination region is created using MAP_HUGETLB so that both
source and destination VMAs are hugetlb-backed and compatible.
Update the FLAGS macro to include MAP_HUGETLB | MAP_SHARED so that both
mappings are hugetlb-backed and compatible. Also use the macro for the
mmap() calls to avoid repeating the flag combination.
This ensures the test reliably exercises hugetlb mremap instead of failing
due to VMA type mismatch.
Link: https://lore.kernel.org/367644df45c65098f23e3945c6a80f4b8a8964a6.1779296493.git.sayalip@linux.ibm.com Fixes: 12b613206474 ("mm, hugepages: add hugetlb vma mremap() test") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:48 +0000 (12:17 +0530)]
selftest/mm: register existing mapping with userfaultfd in hugetlb-mremap
Previously, register_region_with_uffd() created a new anonymous mapping
and overwrote the address supplied by the caller before registering the
range with userfaultfd.
As a result, userfaultfd was applied to an unrelated anonymous mapping
instead of the hugetlb region used by the test.
Remove the extra mmap() and register the caller-provided address range
directly using UFFDIO_REGISTER_MODE_MISSING, so that faults are generated
for the hugetlb mapping used by the test.
This ensures userfaultfd operates on the actual hugetlb test region and
validates the expected fault handling.
Before patch:
running ./hugetlb-mremap
-------------------------
TAP version 13
1..1
Map haddr: Returned address is 0x7eaa40000000
Map daddr: Returned address is 0x7daa40000000
Map vaddr: Returned address is 0x7faa40000000
Address returned by mmap() = 0x7fff9d000000
Mremap: Returned address is 0x7faa40000000
First hex is 0
First hex is 3020100
ok 1 Read same data
Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0
[PASS]
ok 1 hugetlb-mremap
After patch:
running ./hugetb-mremap
-------------------------
TAP version 13
1..1
Map haddr: Returned address is 0x7eaa40000000
Map daddr: Returned address is 0x7daa40000000
Map vaddr: Returned address is 0x7faa40000000
Registered memory at address 0x7eaa40000000 with userfaultfd
Mremap: Returned address is 0x7faa40000000
First hex is 0
First hex is 3020100
ok 1 Read same data
Totals: pass:1 fail:0 xfail:0 xpass:0 skip:0 error:0
[PASS]
ok 1 hugetlb-mremap
Link: https://lore.kernel.org/13845da872ed174316173e8996dbb5f181994017.1779296493.git.sayalip@linux.ibm.com Fixes: 12b613206474 ("mm, hugepages: add hugetlb vma mremap() test") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:47 +0000 (12:17 +0530)]
selftests/mm: free dynamically allocated PMD-sized buffers in split_huge_page_test
Dynamically allocated buffers of PMD size for file-backed THP operations
(file_buf1 and file_buf2) were not freed on the success path and some
failure paths. Since the function is called repeatedly in a loop for each
split order, this can cause significant memory leaks.
On architectures with large PMD sizes, repeated leaks could exhaust system
memory and trigger the OOM killer during test execution.
Ensure all allocated buffers are freed to maintain stable repeated test
runs.
Link: https://lore.kernel.org/060c673b376bbeeed2b1fb1d48a825e846654191.1779296493.git.sayalip@linux.ibm.com Fixes: 035a112e5fd5 ("selftests/mm: make file-backed THP split work by writing PMD size data") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:46 +0000 (12:17 +0530)]
selftests/mm: size tmpfs according to PMD page size in split_huge_page_test
The split_file_backed_thp() test mounts a tmpfs with a fixed size of "4m".
This works on systems with smaller PMD page sizes, but fails on
configurations where the PMD huge page size is larger (e.g. 16MB).
On such systems, the fixed 4MB tmpfs is insufficient to allocate even a
single PMD-sized THP, causing the test to fail.
Fix this by sizing the tmpfs dynamically based on the runtime
pmd_pagesize, allocating space for two PMD-sized pages.
Before patch:
running ./split_huge_page_test /tmp/xfs_dir_YTrI5E
--------------------------------------------------
TAP version 13
1..55
ok 1 Split zero filled huge pages successful
ok 2 Split huge pages to order 0 successful
ok 3 Split huge pages to order 2 successful
ok 4 Split huge pages to order 3 successful
ok 5 Split huge pages to order 4 successful
ok 6 Split huge pages to order 5 successful
ok 7 Split huge pages to order 6 successful
ok 8 Split huge pages to order 7 successful
ok 9 Split PTE-mapped huge pages successful
Please enable pr_debug in split_huge_pages_in_file() for more info.
Failed to write data to testing file: Success (0)
Bail out! Error occurred
Planned tests != run tests (55 != 9)
Totals: pass:9 fail:0 xfail:0 xpass:0 skip:0 error:0
[FAIL]
After patch:
running ./split_huge_page_test /tmp/xfs_dir_bMvj6o
--------------------------------------------------
TAP version 13
1..55
ok 1 Split zero filled huge pages successful
ok 2 Split huge pages to order 0 successful
ok 3 Split huge pages to order 2 successful
ok 4 Split huge pages to order 3 successful
ok 5 Split huge pages to order 4 successful
ok 6 Split huge pages to order 5 successful
ok 7 Split huge pages to order 6 successful
ok 8 Split huge pages to order 7 successful
ok 9 Split PTE-mapped huge pages successful
Please enable pr_debug in split_huge_pages_in_file() for more info.
Please check dmesg for more information
ok 10 File-backed THP split to order 0 test done
Please enable pr_debug in split_huge_pages_in_file() for more info.
Please check dmesg for more information
ok 11 File-backed THP split to order 1 test done
Please enable pr_debug in split_huge_pages_in_file() for more info.
Please check dmesg for more information
ok 12 File-backed THP split to order 2 test done
...
ok 55 Split PMD-mapped pagecache folio to order 7 at
in-folio offset 128 passed
Totals: pass:55 fail:0 xfail:0 xpass:0 skip:0 error:0
[PASS]
ok 1 split_huge_page_test /tmp/xfs_dir_bMvj6o
Link: https://lore.kernel.org/33e1bc10753fe82d1217613d8cd496020778cf2b.1779296493.git.sayalip@linux.ibm.com Fixes: fbe37501b252 ("mm: huge_memory: debugfs for file-backed THP split") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Reviewed-by: David Hildenbrand (Arm) <david@kernel.org> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:45 +0000 (12:17 +0530)]
selftests/mm: fix cgroup task placement and drop memory.current checks in hugetlb_reparenting_test.sh
The test currently moves the calling shell ($$) into the target cgroup
before executing write_to_hugetlbfs. This results in the shell and any
intermediate allocations being charged to the cgroup, introducing noise
and nondeterminism in accounting. It also requires moving the shell back
to the root cgroup after execution.
Spawn a helper process that joins the target cgroup and exec()'s
write_to_hugetlbfs. This ensures that only the workload is accounted to
the cgroup and avoids unintended charging from the shell.
The test currently validates both hugetlb usage and memory.current.
However, memory.current includes internal memcg allocations and per-CPU
batched accounting (MEMCG_CHARGE_BATCH), which are not synchronized and
can vary across systems, leading to non-deterministic results.
Since hugetlb memory is accounted via hugetlb.<size>.current,
memory.current is not a reliable indicator here. Drop memory.current
checks and rely only on hugetlb controller statistics for stable and
accurate validation.
Link: https://lore.kernel.org/fb57491ba83cb0a499c72922e1579b61bee514db.1779296493.git.sayalip@linux.ibm.com Fixes: 29750f71a9b4 ("hugetlb_cgroup: add hugetlb_cgroup reservation tests") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:44 +0000 (12:17 +0530)]
selftests/mm: fix hugetlb pathname construction in hugetlb_reparenting_test.sh
The hugetlb_reparenting_test.sh script constructs hugetlb cgroup memory
interface file names based on the configured huge page size. The script
formats the size only in MB units, which causes mismatches on systems
using larger huge pages where the kernel exposes normalized units (e.g.
"1GB" instead of "1024MB").
As a result, the test fails to locate the corresponding cgroup files when
1GB huge pages are configured.
Update the script to detect the huge page size and select the appropriate
unit (MB or GB) so that the constructed paths match the kernel's hugetlb
controller naming.
Also print an explicit "Fail" message when a test failure occurs to
improve result visibility.
Link: https://lore.kernel.org/837ce751965c93f74c95d89587debf1e93281364.1779296493.git.sayalip@linux.ibm.com Fixes: e487a5d513cb ("selftest/mm: make hugetlb_reparenting_test tolerant to async reparenting") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:47:43 +0000 (12:17 +0530)]
selftests/mm: restore default nr_hugepages value via exit trap in hugetlb_reparenting_test.sh
The test modifies nr_hugepages during execution and restores it from
cleanup() and again reconfigure it setup, which is invoked multiple times
across test flow. This can lead to repeated allocation/freeing of
hugepages.
With set -e, failures in cleanup (e.g., rmdir/umount) can also cause early
exit before restoring the original value at the end.
Move restoration of the original nr_hugepages value to a trap handler
registered for EXIT, INT, and TERM signals so it is always restored on all
exit paths. This also avoids unnecessary allocation churn across repeated
cleanup/setup cycles.
Link: https://lore.kernel.org/29db637c3c6ba6c168f6b33f59f059a0b39c35c8.1779296493.git.sayalip@linux.ibm.com Fixes: 585a9145886a ("selftests/mm: restore default nr_hugepages value during cleanup in hugetlb_reparenting_test.sh") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Acked-by: Zi Yan <ziy@nvidia.com> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: David Hildenbrand (Arm) <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:33:28 +0000 (12:03 +0530)]
selftests/mm: fix hugetlb pathname construction in charge_reserved_hugetlb.sh
The charge_reserved_hugetlb.sh script assumes hugetlb cgroup memory
interface file names use the "<size>MB" format
(e.g. hugetlb.1024MB.current).
This assumption breaks on systems with larger huge pages such as 1GB,
where the kernel exposes normalized units:
hugetlb.1GB.current
hugetlb.1GB.max
hugetlb.1GB.rsvd.max
...
As a result, the script attempts to access files like
hugetlb.1024MB.current, which do not exist when the kernel reports the
size in GB.
Normalize the huge page size and construct the pathname using the
appropriate unit (MB or GB), matching the hugetlb controller naming.
Link: https://lore.kernel.org/04b6b49e4a2acf46319f627caf82b09e6dc1ad7f.1779296493.git.sayalip@linux.ibm.com Fixes: 209376ed2a84 ("selftests/vm: make charge_reserved_hugetlb.sh work with existing cgroup setting") Fixes: 29750f71a9b4 ("hugetlb_cgroup: add hugetlb_cgroup reservation tests") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Sayali Patil [Thu, 21 May 2026 06:33:27 +0000 (12:03 +0530)]
selftests/mm: restore default nr_hugepages value via exit trap in charge_reserved_hugetlb.sh
Patch series "selftests/mm: fix failures and robustness improvements", v7.
Powerpc systems with a 64K base page size exposed several issues while
running mm selftests. Some tests assume specific hugetlb configurations,
use incorrect interfaces, or fail instead of skipping when the required
kernel features are not available.
This series fixes these issues and improves test robustness.
This patch (of 13):
cleanup() resets nr_hugepages to 0 on every invocation, while the test
reconfigures it again in the next iteration. This leads to repeated
allocation and freeing of large numbers of hugepages, especially when the
original value is high.
Additionally, with set -e, failures in earlier cleanup steps (e.g., rmdir
or umount returning EBUSY while background activity is still ongoing) can
cause the script to exit before restoring the original value, leaving the
system in a modified state.
Introduce a trap on EXIT, INT, and TERM to restore the original
nr_hugepages value once at script termination. This avoids unnecessary
allocation churn and ensures the original value is reliably restored on
all exit paths.
Link: https://lore.kernel.org/cover.1779296493.git.sayalip@linux.ibm.com Link: https://lore.kernel.org/5b8fbb29cd6ceffe6752e0af104f60cec072aa10.1779296493.git.sayalip@linux.ibm.com Fixes: 7d695b1c3695 ("selftests/mm: save and restore nr_hugepages value") Signed-off-by: Sayali Patil <sayalip@linux.ibm.com> Acked-by: Zi Yan <ziy@nvidia.com> Tested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Michal Hocko <mhocko@kernel.org> Cc: Oscar Salvador <osalvador@suse.de> Cc: "Ritesh Harjani (IBM)" <ritesh.list@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Hongfu Li [Wed, 13 May 2026 02:52:23 +0000 (10:52 +0800)]
selftests/mm: fix incorrect mmap() error handling with NULL instead of MAP_FAILED
mmap() returns MAP_FAILED, which is defined as (void *)-1, on error, not
NULL. Several selftests incorrectly check the return value of mmap()
using !ptr or ptr == NULL, which would erroneously treat MAP_FAILED as a
valid pointer since MAP_FAILED is non-zero and non-NULL. This can lead to
segfaults when mmap() actually fails under memory pressure.
Link: https://lore.kernel.org/20260513025223.592766-1-lihongfu@kylinos.cn Signed-off-by: Hongfu Li <lihongfu@kylinos.cn> Reviewed-by: Dev Jain <dev.jain@arm.com> Reviewed-by: Lorenzo Stoakes <ljs@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Liam R. Howlett <liam@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Chen Wandun [Wed, 13 May 2026 05:54:28 +0000 (13:54 +0800)]
mm/khugepaged: avoid underflow in madvise_collapse for sub-PMD MADV_COLLAPSE
madvise_collapse() computes the THP-aligned window:
hstart = ALIGN(start, HPAGE_PMD_SIZE); /* round up */
hend = ALIGN_DOWN(end, HPAGE_PMD_SIZE); /* round down */
The following case will cause hstart > hend, and result in underflow in
the return statement, avoid it by returning zero early when hstart > hend.
The return value is due to input is valid to madvise(), and there is
nothing to collapse.
In addition, kmalloc_obj(), mmgrab() and lru_add_drain_all() are
unnecessary when hstart == hend, so skip these operations by returning
early too.
Link: https://lore.kernel.org/20260513055428.1664898-1-chenwandun@lixiang.com Signed-off-by: Chen Wandun <chenwandun@lixiang.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Lorenzo Stoakes <ljs@kernel.org> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam R. Howlett <liam@infradead.org> Cc: Nico Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: run_vmtests.sh: drop detection and setup of HugeTLB
All the tests that use HugeTLB can detect and setup HugeTLB pages on their
own.
Drop detection and setup of HugeTLB from run_vmtests.sh.
Link: https://lore.kernel.org/20260511162840.375890-56-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: run_vmtests.sh: free memory if available memory is low
Currently when running THP and HugeTLB tests, if HAVE_HUGEPAGES is set
run_test() drops caches, compacts memory and runs the test. But if
HAVE_HUGEPAGES is not set it skips the tests entirely, even if THP tests
have nothing to do with HAVE_HUGEPAGES.
Replace the check if HAVE_HUGEPAGES is set with a check of how much memory
is available. If there is less than 256 MB of available memory, drop
caches and run compaction and then continue to run a test regardless of
HAVE_HUGEPAGES value.
Link: https://lore.kernel.org/20260511162840.375890-55-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: va_high_addr_switch.sh: drop huge pages setup
Since va_high_addr_switch takes care of setting up huge pages, there is no
need to set them up in the va_high_addr_switch.sh wrapper script.
Link: https://lore.kernel.org/20260511162840.375890-54-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Luiz Capitulino <luizcap@redhat.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: va_high_addr_switch: add setup of HugeTLB pages
va_high_addr_switch skips HugeTLB tests if there are no free huge pages
prepared by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-53-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: uffd-wp-mremap: add setup of HugeTLB pages
uffd-wp-remap skips HugeTLB tests if there are no free huge pages prepared
by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-52-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: uffd-unit-tests: add setup of HugeTLB pages
uffd-unit-tests skips HugeTLB tests if there are no free huge pages
prepared by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Replace exit() calls with _exit() to avoid restoring HugeTLB settings in
the middle of test.
Link: https://lore.kernel.org/20260511162840.375890-51-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: uffd-stress: use hugetlb_save and alloc huge pages
uffd-stress skips HugeTLB tests if there are no free huge pages prepared
by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-50-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: thuge-gen: add setup of HugeTLB pages
thuge-gen skips tests if there are no free huge pages prepared by a
wrapper script and shm liimts in proc are too low.
Replace custom detection of huge pages with the library functions and add
setup of HugeTLB pages and shm limits to the test and make sure that the
original settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-49-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: protection_keys: use library code for HugeTLB setup
protection_keys open codes setup of HugeTLB pages.
Replace it with the library functions from hugepage_setup.
Replace exit() calls with _exit() to avoid restoring HugeTLB settings in
the middle of test.
Link: https://lore.kernel.org/20260511162840.375890-48-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: pagemap_ioctl: add setup of HugeTLB pages
pagemap-ioctl skips HugeTLB tests if there are no free huge pages prepared
by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-47-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: migration: add setup of HugeTLB pages
migration skips HugeTLB tests if there are no free huge pages prepared by
a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Since kselftest_harness runs fixture setup and the tests in child
processes, use HUGETLB_SETUP_DEFAULT_PAGES() that defines a constructor
that runs in the main process and add verification that there are enough
free huge pages to the tests that use them.
Reset signal handlers to defaults in FIXTURE_SETUP() so that sending
SIGTERM and SIGHUP during the tests won't cause restoration of HugeTLB
settings.
Link: https://lore.kernel.org/20260511162840.375890-46-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugetlb-vmemmap: add setup of HugeTLB pages
hugetlb-vmemmap test fails if there are no free huge pages prepared by a
wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-45-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugetlb-soft-offline: add setup of HugeTLB pages
hugetlb-soft-offline test uses open coded access to /proc to determine
availability of huge pages and fails if there are no enough free huget
pages..
Replace open coded access to /proc with hugepage helpers and add setup of
HugeTLB pages to the test and make sure that the original settings are
restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-44-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugetlb-shm: add setup of HugeTLB pages
hugetlb-shm test fails if there are no free huge pages prepared by a
wrapper script and shm liimts in proc are too low.
Add setup of HugeTLB pages and shm limits to the test and make sure that
the original settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-43-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugetlb-mremap: add setup of HugeTLB pages
hugetlb-mremap test fails if there are no free huge pages prepared by a
wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-42-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugetlb-mmap: add setup of HugeTLB pages
hugetlb-mmap test fails if there are no free huge pages prepared by a
wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-41-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugetlb_madv_vs_map: add setup of HugeTLB pages
hugetlb_madv_vs_map test skips testing if there are no free huge pages
prepared by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-40-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugetlb-madvise: add setup of HugeTLB pages
hugetlb-madvise test skips testing if there are no free huge pages
prepared by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-39-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugetlb_fault_after_madv: add setup of HugeTLB pages
hugetlb_fault_after_madv test skips testing if there are no free huge
pages prepared by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-38-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugepage_dio: add setup of HugeTLB pages
hugepage_dio test fails if there are no free huge pages prepared by a
wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-37-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hmm-tests: add setup of HugeTLB pages
hmm-tests skips HugeTLB tests if there are no free huge pages prepared by
a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Since kselftest_harness runs fixture setup and the tests in child
processes, use HUGETLB_SETUP_DEFAULT_PAGES() that defines a constructor
that runs in the main process and add verification that there are enough
free huge pages to the tests that use them.
Replace exit() calls with _exit() to avoid restoring HugeTLB settings in
the middle of test and use SIGKILL to kill a child process in
hmm_cow_in_device test to avoid interference with signal handlers in
hugepage_restore_settings().
Link: https://lore.kernel.org/20260511162840.375890-36-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: gup_test: add setup of HugeTLB pages
gup_test fails to run HugeTLB tests if there are no free huge pages
prepared by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-35-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: gup_longterm: add setup of HugeTLB pages
gup_longterm tests skips HugeTLB tests if there are no free huge pages
prepared by a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-34-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
cow tests skips HugeTLB tests if there are no free huge pages prepared by
a wrapper script.
Add setup of HugeTLB pages to the test and make sure that the original
settings are restored on the test exit.
Link: https://lore.kernel.org/20260511162840.375890-33-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: compaction_test: use HugeTLB helpers ...
... instead of open coded access of HugeTLB parameters via /proc.
Link: https://lore.kernel.org/20260511162840.375890-32-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: vm_util: add helpers to set and restore shm limits
hugetlb-shm and thuge-gen tests require that limits defined by
/proc/sys/kernel/{shmmax,shmall} should be higher than certain values.
Add helpers that allow setting these limits and restoring their settings
on a test exit.
They will be used later in hugetlb-shm and thuge-gen.
Link: https://lore.kernel.org/20260511162840.375890-31-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: move read_file(), read_num() and write_num() to vm_util
These are useful helpers for writing and reading sysfs and proc files.
Make them available to the tests that don't use thp_settings.
While on it make write_num() use "%lu" instead of "%ld" to match 'unsigned
long num' argument type.
Link: https://lore.kernel.org/20260511162840.375890-30-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugepage_settings: add APIs for HugeTLB setup and teardown
A lot of tests require free HugeTLB pages. Some need just a few default
huge pages, some need a certain amount of memory available as HugeTLB, and
some just skip lots of tests if huge pages of all supported sizes are not
available.
This all resulted in a huge mess in run_vmtests.sh that sets up some huge
pages, adjusts them later and restores some of the settings if the stars
align.
Add APIs that allow saving the state of HugeTLB and setting up the desired
amount of HugeTLB pages.
Saving the state also registers atexit() callback and signal handler that
will ensure restoration of HugeTLB state.
Since many tests use both HugeTLB and THP, the atexit() callbacks and
signal handler are restoring both.
For kselftest_harness tests that run fixture setups and test in child
processes add a constructor that will save and restore settings in the
main process.
Link: https://lore.kernel.org/20260511162840.375890-29-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Reviewed-by: Luiz Capitulino <luizcap@redhat.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugepage_settings: rename and rework get_free_hugepages()
... to hugetlb_free_default_pages() for consistency with
hugetlb_nr_default_pages().
Make hugetlb_free_default_pages() use hugetlb_sysfs_path() helper instead
of parsing /proc/meminfo.
Link: https://lore.kernel.org/20260511162840.375890-28-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
to detect and change the amount of HugeTLB pages of different sizes.
Link: https://lore.kernel.org/20260511162840.375890-27-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: hugepage_settings: use unsigned long in detect_hugetlb_page_size
... instead of size_t to avoid type mismatch in 32 and 64 bit builds.
Link: https://lore.kernel.org/20260511162840.375890-26-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: move HugeTLB helpers to hugepage_settings
Move library functions that abstract HugeTLB /proc and /sysfs access from
vm_util to hugepage_settings.
This will help creating common helpers that save and restore HugeTLB and
THP settings.
Link: https://lore.kernel.org/20260511162840.375890-25-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: rename thp_settings.[ch] to hugepage_settings.[ch]
... for upcoming addition of HugeTLB helpers.
Link: https://lore.kernel.org/20260511162840.375890-24-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: add atexit() and signal handlers to thp_settings
khugepaged registers atexit() and signal handlers that ensure that THP
settings are restored regardless of how the test exited.
Make these handlers available for all users of thp_settings.
The call to thp_save_settings() installs thp_restore_settings as the
atexit() callback and makes sure that signals that kill a process would
still call exit() and atexit() callback.
Update child process in khugepaged tests using thp_settings to use _exit()
instead of exit() to avoid altering THP settings in the middle of a test.
Remove redundant THP cleanup from folio_split_race_test.c.
Link: https://lore.kernel.org/20260511162840.375890-23-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Tested-by: Luiz Capitulino <luizcap@redhat.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: va_high_addr_switch: use kselftest framework
Convert va_high_addr_switch test to use kselftest framework for reporting
and tracking successful and failing runs.
Link: https://lore.kernel.org/20260511162840.375890-22-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Luiz Capitulino <luizcap@redhat.com> Tested-by: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Donet Tom <donettom@linux.ibm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Mark Brown <broonie@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
selftests/mm: uffd-unit-tests: use kselftest framework
Convert uffd-unit-tests to use kselftest framework for reporting and
tracking successful and failing runs.
Link: https://lore.kernel.org/20260511162840.375890-21-rppt@kernel.org Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org> Reviewed-by: Donet Tom <donettom@linux.ibm.com> Reviewed-by: Mark Brown <broonie@kernel.org> Tested-by: Luiz Capitulino <luizcap@redhat.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Leon Romanovsky <leon@kernel.org> Cc: Liam Howlett <liam@infradead.org> Cc: Li Wang <li.wang@linux.dev> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Nico Pache <npache@redhat.com> Cc: Peter Xu <peterx@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Sarthak Sharma <sarthak.sharma@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Zi Yan <ziy@nvidia.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
projects / linux / log