kernel.git/tools/testing/selftests/mm/Makefile, branch linux-6.10.y

selftests: memfd_secret: don't build memfd_secret test on unsupported arches

2024-08-29T15:35:41Z

commit 7c5e8d212d7d81991a580e7de3904ea213d9a852 upstream. [1] mentions that memfd_secret is only supported on arm64, riscv, x86 and x86_64 for now. It doesn't support other architectures. I found the build error on arm and decided to send the fix as it was creating noise on KernelCI: memfd_secret.c: In function 'memfd_secret': memfd_secret.c:42:24: error: '__NR_memfd_secret' undeclared (first use in this function); did you mean 'memfd_secret'? 42 | return syscall(__NR_memfd_secret, flags); | ^~~~~~~~~~~~~~~~~ | memfd_secret Hence I'm adding condition that memfd_secret should only be compiled on supported architectures. Also check in run_vmtests script if memfd_secret binary is present before executing it. Link: https://lkml.kernel.org/r/20240812061522.1933054-1-usama.anjum@collabora.com Link: https://lore.kernel.org/all/20210518072034.31572-7-rppt@kernel.org/ [1] Link: https://lkml.kernel.org/r/20240809075642.403247-1-usama.anjum@collabora.com Fixes: 76fe17ef588a ("secretmem: test: add basic selftest for memfd_secret(2)") Signed-off-by: Muhammad Usama Anjum Reviewed-by: Shuah Khan Acked-by: Mike Rapoport (Microsoft) Cc: Albert Ou Cc: James Bottomley Cc: Mike Rapoport (Microsoft) Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

selftests: mm: add s390 to ARCH check

2024-08-14T13:34:34Z

commit 30b651c8bc788c068a978dc760e9d5f824f7019e upstream. commit 0518dbe97fe6 ("selftests/mm: fix cross compilation with LLVM") changed the env variable for the architecture from MACHINE to ARCH. This is preventing 3 required TEST_GEN_FILES from being included when cross compiling s390x and errors when trying to run the test suite. This is due to the ARCH variable already being set and the arch folder name being s390. Add "s390" to the filtered list to cover this case and have the 3 files included in the build. Link: https://lkml.kernel.org/r/20240724213517.23918-1-npache@redhat.com Fixes: 0518dbe97fe6 ("selftests/mm: fix cross compilation with LLVM") Signed-off-by: Nico Pache Cc: Mark Brown Cc: Albert Ou Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Shuah Khan Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

selftest mm/mseal read-only elf memory segment

2024-05-24T02:40:27Z

Sealing read-only of elf mapping so it can't be changed by mprotect. [jeffxu@chromium.org: style change] Link: https://lkml.kernel.org/r/20240416220944.2481203-2-jeffxu@chromium.org [amer.shanawany@gmail.com: fix linker error for inline function] Link: https://lkml.kernel.org/r/20240420202346.546444-1-amer.shanawany@gmail.com [jeffxu@chromium.org: fix compile warning] Link: https://lkml.kernel.org/r/20240420003515.345982-2-jeffxu@chromium.org [jeffxu@chromium.org: fix arm build] Link: https://lkml.kernel.org/r/20240502225331.3806279-2-jeffxu@chromium.org Link: https://lkml.kernel.org/r/20240415163527.626541-6-jeffxu@chromium.org Signed-off-by: Jeff Xu Signed-off-by: Amer Al Shanawany Reviewed-by: Kees Cook Reviewed-by: Liam R. Howlett Cc: Dave Hansen Cc: Greg Kroah-Hartman Cc: Guenter Roeck Cc: Jann Horn Cc: Jeff Xu Cc: Jonathan Corbet Cc: Jorge Lucangeli Obes Cc: Linus Torvalds Cc: Matthew Wilcox (Oracle) Cc: Muhammad Usama Anjum Cc: Pedro Falcato Cc: Stephen Röttger Cc: Suren Baghdasaryan Cc: Amer Al Shanawany Cc: Javier Carrasco Cc: Shuah Khan Signed-off-by: Andrew Morton

selftest mm/mseal memory sealing

2024-05-24T02:40:26Z

selftest for memory sealing change in mmap() and mseal(). Link: https://lkml.kernel.org/r/20240415163527.626541-4-jeffxu@chromium.org Signed-off-by: Jeff Xu Reviewed-by: Kees Cook Reviewed-by: Liam R. Howlett Cc: Dave Hansen Cc: Greg Kroah-Hartman Cc: Guenter Roeck Cc: Jann Horn Cc: Jeff Xu Cc: Jonathan Corbet Cc: Jorge Lucangeli Obes Cc: Linus Torvalds Cc: Matthew Wilcox (Oracle) Cc: Muhammad Usama Anjum Cc: Pedro Falcato Cc: Stephen Röttger Cc: Suren Baghdasaryan Cc: Amer Al Shanawany Cc: Javier Carrasco Cc: Shuah Khan Signed-off-by: Andrew Morton

Merge tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-05-19T16:21:03Z

Pull mm updates from Andrew Morton: "The usual shower of singleton fixes and minor series all over MM, documented (hopefully adequately) in the respective changelogs. Notable series include: - Lucas Stach has provided some page-mapping cleanup/consolidation/ maintainability work in the series "mm/treewide: Remove pXd_huge() API". - In the series "Allow migrate on protnone reference with MPOL_PREFERRED_MANY policy", Donet Tom has optimized mempolicy's MPOL_PREFERRED_MANY mode, yielding almost doubled performance in one test. - In their series "Memory allocation profiling" Kent Overstreet and Suren Baghdasaryan have contributed a means of determining (via /proc/allocinfo) whereabouts in the kernel memory is being allocated: number of calls and amount of memory. - Matthew Wilcox has provided the series "Various significant MM patches" which does a number of rather unrelated things, but in largely similar code sites. - In his series "mm: page_alloc: freelist migratetype hygiene" Johannes Weiner has fixed the page allocator's handling of migratetype requests, with resulting improvements in compaction efficiency. - In the series "make the hugetlb migration strategy consistent" Baolin Wang has fixed a hugetlb migration issue, which should improve hugetlb allocation reliability. - Liu Shixin has hit an I/O meltdown caused by readahead in a memory-tight memcg. Addressed in the series "Fix I/O high when memory almost met memcg limit". - In the series "mm/filemap: optimize folio adding and splitting" Kairui Song has optimized pagecache insertion, yielding ~10% performance improvement in one test. - Baoquan He has cleaned up and consolidated the early zone initialization code in the series "mm/mm_init.c: refactor free_area_init_core()". - Baoquan has also redone some MM initializatio code in the series "mm/init: minor clean up and improvement". - MM helper cleanups from Christoph Hellwig in his series "remove follow_pfn". - More cleanups from Matthew Wilcox in the series "Various page->flags cleanups". - Vlastimil Babka has contributed maintainability improvements in the series "memcg_kmem hooks refactoring". - More folio conversions and cleanups in Matthew Wilcox's series: "Convert huge_zero_page to huge_zero_folio" "khugepaged folio conversions" "Remove page_idle and page_young wrappers" "Use folio APIs in procfs" "Clean up __folio_put()" "Some cleanups for memory-failure" "Remove page_mapping()" "More folio compat code removal" - David Hildenbrand chipped in with "fs/proc/task_mmu: convert hugetlb functions to work on folis". - Code consolidation and cleanup work related to GUP's handling of hugetlbs in Peter Xu's series "mm/gup: Unify hugetlb, part 2". - Rick Edgecombe has developed some fixes to stack guard gaps in the series "Cover a guard gap corner case". - Jinjiang Tu has fixed KSM's behaviour after a fork+exec in the series "mm/ksm: fix ksm exec support for prctl". - Baolin Wang has implemented NUMA balancing for multi-size THPs. This is a simple first-cut implementation for now. The series is "support multi-size THP numa balancing". - Cleanups to vma handling helper functions from Matthew Wilcox in the series "Unify vma_address and vma_pgoff_address". - Some selftests maintenance work from Dev Jain in the series "selftests/mm: mremap_test: Optimizations and style fixes". - Improvements to the swapping of multi-size THPs from Ryan Roberts in the series "Swap-out mTHP without splitting". - Kefeng Wang has significantly optimized the handling of arm64's permission page faults in the series "arch/mm/fault: accelerate pagefault when badaccess" "mm: remove arch's private VM_FAULT_BADMAP/BADACCESS" - GUP cleanups from David Hildenbrand in "mm/gup: consistently call it GUP-fast". - hugetlb fault code cleanups from Vishal Moola in "Hugetlb fault path to use struct vm_fault". - selftests build fixes from John Hubbard in the series "Fix selftests/mm build without requiring "make headers"". - Memory tiering fixes/improvements from Ho-Ren (Jack) Chuang in the series "Improved Memory Tier Creation for CPUless NUMA Nodes". Fixes the initialization code so that migration between different memory types works as intended. - David Hildenbrand has improved follow_pte() and fixed an errant driver in the series "mm: follow_pte() improvements and acrn follow_pte() fixes". - David also did some cleanup work on large folio mapcounts in his series "mm: mapcount for large folios + page_mapcount() cleanups". - Folio conversions in KSM in Alex Shi's series "transfer page to folio in KSM". - Barry Song has added some sysfs stats for monitoring multi-size THP's in the series "mm: add per-order mTHP alloc and swpout counters". - Some zswap cleanups from Yosry Ahmed in the series "zswap same-filled and limit checking cleanups". - Matthew Wilcox has been looking at buffer_head code and found the documentation to be lacking. The series is "Improve buffer head documentation". - Multi-size THPs get more work, this time from Lance Yang. His series "mm/madvise: enhance lazyfreeing with mTHP in madvise_free" optimizes the freeing of these things. - Kemeng Shi has added more userspace-visible writeback instrumentation in the series "Improve visibility of writeback". - Kemeng Shi then sent some maintenance work on top in the series "Fix and cleanups to page-writeback". - Matthew Wilcox reduces mmap_lock traffic in the anon vma code in the series "Improve anon_vma scalability for anon VMAs". Intel's test bot reported an improbable 3x improvement in one test. - SeongJae Park adds some DAMON feature work in the series "mm/damon: add a DAMOS filter type for page granularity access recheck" "selftests/damon: add DAMOS quota goal test" - Also some maintenance work in the series "mm/damon/paddr: simplify page level access re-check for pageout" "mm/damon: misc fixes and improvements" - David Hildenbrand has disabled some known-to-fail selftests ni the series "selftests: mm: cow: flag vmsplice() hugetlb tests as XFAIL". - memcg metadata storage optimizations from Shakeel Butt in "memcg: reduce memory consumption by memcg stats". - DAX fixes and maintenance work from Vishal Verma in the series "dax/bus.c: Fixups for dax-bus locking"" * tag 'mm-stable-2024-05-17-19-19' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (426 commits) memcg, oom: cleanup unused memcg_oom_gfp_mask and memcg_oom_order selftests/mm: hugetlb_madv_vs_map: avoid test skipping by querying hugepage size at runtime mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_wp mm/hugetlb: add missing VM_FAULT_SET_HINDEX in hugetlb_fault selftests: cgroup: add tests to verify the zswap writeback path mm: memcg: make alloc_mem_cgroup_per_node_info() return bool mm/damon/core: fix return value from damos_wmark_metric_value mm: do not update memcg stats for NR_{FILE/SHMEM}_PMDMAPPED selftests: cgroup: remove redundant enabling of memory controller Docs/mm/damon/maintainer-profile: allow posting patches based on damon/next tree Docs/mm/damon/maintainer-profile: change the maintainer's timezone from PST to PT Docs/mm/damon/design: use a list for supported filters Docs/admin-guide/mm/damon/usage: fix wrong schemes effective quota update command Docs/admin-guide/mm/damon/usage: fix wrong example of DAMOS filter matching sysfs file selftests/damon: classify tests for functionalities and regressions selftests/damon/_damon_sysfs: use 'is' instead of '==' for 'None' selftests/damon/_damon_sysfs: find sysfs mount point from /proc/mounts selftests/damon/_damon_sysfs: check errors from nr_schemes file reads mm/damon/core: initialize ->esz_bp from damos_quota_init_priv() selftests/damon: add a test for DAMOS quota goal ...

selftests/mm: fix powerpc ARCH check

2024-05-10T19:55:36Z

In commit 0518dbe97fe6 ("selftests/mm: fix cross compilation with LLVM") the logic to detect the machine architecture in the Makefile was changed to use ARCH, and only fallback to uname -m if ARCH is unset. However the tests of ARCH were not updated to account for the fact that ARCH is "powerpc" for powerpc builds, not "ppc64". Fix it by changing the checks to look for "powerpc", and change the uname -m logic to convert "ppc64.*" into "powerpc". With that fixed the following tests now build for powerpc again: * protection_keys * va_high_addr_switch * virtual_address_range * write_to_hugetlbfs Link: https://lkml.kernel.org/r/20240506115825.66415-1-mpe@ellerman.id.au Fixes: 0518dbe97fe6 ("selftests/mm: fix cross compilation with LLVM") Signed-off-by: Michael Ellerman Cc: Mark Brown Cc: [6.4+] Signed-off-by: Andrew Morton

selftests: break the dependency upon local header files

2024-04-26T03:56:42Z

Patch series "Fix selftests/mm build without requiring "make headers"". As mentioned in each patch, this implements the solution that we discussed in December 2023, in [1]. This turned out to be very clean and easy. It should also be quite easy to maintain. This should also make Peter Zijlstra happy, because it directly addresses the root cause of his "NAK NAK NAK" reply [2]. :) [1] https://lore.kernel.org/all/783a4178-1dec-4e30-989a-5174b8176b09@redhat.com/ [2] https://lore.kernel.org/lkml/20231103121652.GA6217@noisy.programming.kicks-ass.net/ This patch (of 2): Use tools/include/uapi/ files instead. These are obtained by taking a snapshot: run "make headers" at the top level, then copy the desired header file into the appropriate subdir in tools/uapi/. This was discussed and solved in [1]. However, even before copying any additional files there, there are already quite a few in tools/include/uapi already. And these will immediately fix a number of selftests/mm build failures. So this patch: a) Adds TOOLS_INCLUDES to selftests/lib.mk, so that all selftests can immediately and easily include the snapshotted header files. b) Uses $(TOOLS_INCLUDES) in the selftests/mm build. On today's Arch Linux, this already fixes all build errors except for a few userfaultfd.h (those will be addressed in a subsequent patch). [1] https://lore.kernel.org/all/783a4178-1dec-4e30-989a-5174b8176b09@redhat.com/ Link: https://lkml.kernel.org/r/20240328033418.203790-1-jhubbard@nvidia.com Link: https://lkml.kernel.org/r/20240328033418.203790-2-jhubbard@nvidia.com Signed-off-by: John Hubbard Acked-by: David Hildenbrand Cc: Mark Brown Cc: Muhammad Usama Anjum Cc: Suren Baghdasaryan Cc: Peter Zijlstra Cc: Andrea Arcangeli Cc: Axel Rasmussen Cc: Peter Xu Cc: Shuah Khan Signed-off-by: Andrew Morton

Merge tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-03-15T01:03:09Z

Pull non-MM updates from Andrew Morton: - Kuan-Wei Chiu has developed the well-named series "lib min_heap: Min heap optimizations". - Kuan-Wei Chiu has also sped up the library sorting code in the series "lib/sort: Optimize the number of swaps and comparisons". - Alexey Gladkov has added the ability for code running within an IPC namespace to alter its IPC and MQ limits. The series is "Allow to change ipc/mq sysctls inside ipc namespace". - Geert Uytterhoeven has contributed some dhrystone maintenance work in the series "lib: dhry: miscellaneous cleanups". - Ryusuke Konishi continues nilfs2 maintenance work in the series "nilfs2: eliminate kmap and kmap_atomic calls" "nilfs2: fix kernel bug at submit_bh_wbc()" - Nathan Chancellor has updated our build tools requirements in the series "Bump the minimum supported version of LLVM to 13.0.1". - Muhammad Usama Anjum continues with the selftests maintenance work in the series "selftests/mm: Improve run_vmtests.sh". - Oleg Nesterov has done some maintenance work against the signal code in the series "get_signal: minor cleanups and fix". Plus the usual shower of singleton patches in various parts of the tree. Please see the individual changelogs for details. * tag 'mm-nonmm-stable-2024-03-14-09-36' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (77 commits) nilfs2: prevent kernel bug at submit_bh_wbc() nilfs2: fix failure to detect DAT corruption in btree and direct mappings ocfs2: enable ocfs2_listxattr for special files ocfs2: remove SLAB_MEM_SPREAD flag usage assoc_array: fix the return value in assoc_array_insert_mid_shortcut() buildid: use kmap_local_page() watchdog/core: remove sysctl handlers from public header nilfs2: use div64_ul() instead of do_div() mul_u64_u64_div_u64: increase precision by conditionally swapping a and b kexec: copy only happens before uchunk goes to zero get_signal: don't initialize ksig->info if SIGNAL_GROUP_EXIT/group_exec_task get_signal: hide_si_addr_tag_bits: fix the usage of uninitialized ksig get_signal: don't abuse ksig->info.si_signo and ksig->sig const_structs.checkpatch: add device_type Normalise "name (ad@dr)" MODULE_AUTHORs to "name " dyndbg: replace kstrdup() + strchr() with kstrdup_and_replace() list: leverage list_is_head() for list_entry_is_head() nilfs2: MAINTAINERS: drop unreachable project mirror site smp: make __smp_processor_id() 0-argument macro fat: fix uninitialized field in nostale filehandles ...

selftests/mm: run_vmtests.sh: add missing tests

2024-02-22T23:38:55Z

Add missing tests to run_vmtests.sh. The mm kselftests are run through run_vmtests.sh. If a test isn't present in this script, it'll not run with run_tests or `make -C tools/testing/selftests/mm run_tests`. [usama.anjum@collabora.com: use correct flag in the code] Link: https://lkml.kernel.org/r/20240201130538.1404897-2-usama.anjum@collabora.com Link: https://lkml.kernel.org/r/20240125154608.720072-6-usama.anjum@collabora.com Cc: Ryan Roberts Signed-off-by: Muhammad Usama Anjum Cc: Shuah Khan Signed-off-by: Andrew Morton

selftests/mm: new test that steals pages

2024-02-22T18:24:41Z

This test stresses the race between of madvise(DONTNEED), a page fault and a parallel huge page mmap, which should fail due to lack of available page available for mapping. This test case must run on a system with one and only one huge page available. # echo 1 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages During setup, the test allocates the only available page, and starts three threads: - thread 1: * madvise(MADV_DONTNEED) on the allocated huge page - thread 2: * Write to the allocated huge page - thread 3: * Tries to allocated (steal) an extra huge page (which is not available) thread 3 should never succeed in the allocation, since the only huge page was never unmapped, and should be reserved. Touching the old page after thread3 allocation will raise a SIGBUS. Link: https://lkml.kernel.org/r/20240105155419.1939484-2-leitao@debian.org Signed-off-by: Breno Leitao Cc: Mike Rapoport (IBM) Cc: Muchun Song Cc: Rik van Riel Cc: Shuah Khan Cc: Vegard Nossum Cc: Yang Shi Signed-off-by: Andrew Morton