kernel/linux.git/lib/tests/Makefile, branch v7.0-rc7

Merge tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-02-12T20:13:01+00:00

Pull non-MM updates from Andrew Morton: - "ocfs2: give ocfs2 the ability to reclaim suballocator free bg" saves disk space by teaching ocfs2 to reclaim suballocator block group space (Heming Zhao) - "Add ARRAY_END(), and use it to fix off-by-one bugs" adds the ARRAY_END() macro and uses it in various places (Alejandro Colomar) - "vmcoreinfo: support VMCOREINFO_BYTES larger than PAGE_SIZE" makes the vmcore code future-safe, if VMCOREINFO_BYTES ever exceeds the page size (Pnina Feder) - "kallsyms: Prevent invalid access when showing module buildid" cleans up kallsyms code related to module buildid and fixes an invalid access crash when printing backtraces (Petr Mladek) - "Address page fault in ima_restore_measurement_list()" fixes a kexec-related crash that can occur when booting the second-stage kernel on x86 (Harshit Mogalapalli) - "kho: ABI headers and Documentation updates" updates the kexec handover ABI documentation (Mike Rapoport) - "Align atomic storage" adds the __aligned attribute to atomic_t and atomic64_t definitions to get natural alignment of both types on csky, m68k, microblaze, nios2, openrisc and sh (Finn Thain) - "kho: clean up page initialization logic" simplifies the page initialization logic in kho_restore_page() (Pratyush Yadav) - "Unload linux/kernel.h" moves several things out of kernel.h and into more appropriate places (Yury Norov) - "don't abuse task_struct.group_leader" removes the usage of ->group_leader when it is "obviously unnecessary" (Oleg Nesterov) - "list private v2 & luo flb" adds some infrastructure improvements to the live update orchestrator (Pasha Tatashin) * tag 'mm-nonmm-stable-2026-02-12-10-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (107 commits) watchdog/hardlockup: simplify perf event probe and remove per-cpu dependency procfs: fix missing RCU protection when reading real_parent in do_task_stat() watchdog/softlockup: fix sample ring index wrap in need_counting_irqs() kcsan, compiler_types: avoid duplicate type issues in BPF Type Format kho: fix doc for kho_restore_pages() tests/liveupdate: add in-kernel liveupdate test liveupdate: luo_flb: introduce File-Lifecycle-Bound global state liveupdate: luo_file: Use private list list: add kunit test for private list primitives list: add primitives for private list manipulations delayacct: fix uapi timespec64 definition panic: add panic_force_cpu= parameter to redirect panic to a specific CPU netclassid: use thread_group_leader(p) in update_classid_task() RDMA/umem: don't abuse current->group_leader drm/pan*: don't abuse current->group_leader drm/amd: kill the outdated "Only the pthreads threading model is supported" checks drm/amdgpu: don't abuse current->group_leader android/binder: use same_thread_group(proc->tsk, current) in binder_mmap() android/binder: don't abuse current->group_leader kho: skip memoryless NUMA nodes when reserving scratch areas ...

lib/tests: add KUnit test for bitops

2026-02-08T23:47:29+00:00

Add a KUnit test suite for the bitops API. The existing 'lib/test_bitops.c' is preserved as-is because it contains ad-hoc micro-benchmarks 'test_fns' and is intended to ensure no compiler warnings from C=1 sparse checker or -Wextra compilations. Introduce 'lib/tests/bitops_kunit.c' for functional regression testing. It ports the test logic and data patterns from 'lib/test_bitops.c' to KUnit, verifying correct behavior across various input patterns and architecture-specific edge cases using isolated stack-allocated bitmaps. The following test logic has been ported from test_bitops_startup() in lib/test_bitops.c: - set_bit() / clear_bit() / find_first_bit() validation -> test_set_bit_clear_bit() - get_count_order() validation -> test_get_count_order() - get_count_order_long() validation -> test_get_count_order_long() Also improve the find_first_bit() test to check the full bitmap length (BITOPS_LENGTH) instead of omitting the last bit, ensuring the bitmap is completely empty after cleanup. Verified on x86_64, i386, and arm64 architectures. Sample KUnit output: KTAP version 1 # Subtest: bitops # module: bitops_kunit 1..3 KTAP version 1 # Subtest: test_set_bit_clear_bit ok 1 BITOPS_4 ok 2 BITOPS_7 ok 3 BITOPS_11 ok 4 BITOPS_31 ok 5 BITOPS_88 # test_set_bit_clear_bit: pass:5 fail:0 skip:0 total:5 ok 1 test_set_bit_clear_bit KTAP version 1 # Subtest: test_get_count_order ok 1 0x00000003 ok 2 0x00000004 ok 3 0x00001fff ok 4 0x00002000 ok 5 0x50000000 ok 6 0x80000000 ok 7 0x80003000 # test_get_count_order: pass:7 fail:0 skip:0 total:7 ok 2 test_get_count_order KTAP version 1 # Subtest: test_get_count_order_long ok 1 0x0000000300000000 ok 2 0x0000000400000000 ok 3 0x00001fff00000000 ok 4 0x0000200000000000 ok 5 0x5000000000000000 ok 6 0x8000000000000000 ok 7 0x8000300000000000 # test_get_count_order_long: pass:7 fail:0 skip:0 total:7 ok 3 test_get_count_order_long [Yury: trim Kconfig help message] CC: Jesse Brandeburg CC: Wei Yang Signed-off-by: Ryota Sakamoto Signed-off-by: Yury Norov

tests/liveupdate: add in-kernel liveupdate test

2026-02-08T08:13:33+00:00

Introduce an in-kernel test module to validate the core logic of the Live Update Orchestrator's File-Lifecycle-Bound feature. This provides a low-level, controlled environment to test FLB registration and callback invocation without requiring userspace interaction or actual kexec reboots. The test is enabled by the CONFIG_LIVEUPDATE_TEST Kconfig option. Link: https://lkml.kernel.org/r/20251218155752.3045808-6-pasha.tatashin@soleen.com Signed-off-by: Pasha Tatashin Cc: Alexander Graf Cc: David Gow Cc: David Matlack Cc: David Rientjes Cc: Jonathan Corbet Cc: Kees Cook Cc: Mike Rapoport Cc: Petr Mladek Cc: Pratyush Yadav Cc: Samiullah Khawaja Cc: Tamir Duberstein Signed-off-by: Andrew Morton

list: add kunit test for private list primitives

2026-02-08T08:13:32+00:00

Add a KUnit test suite for the new private list primitives. The test defines a struct with a __private list_head and exercises every macro defined in . This ensures that the macros correctly handle the ACCESS_PRIVATE() abstraction and compile without warnings when acting on private members, verifying that qualifiers are stripped and offsets are calculated correctly. Link: https://lkml.kernel.org/r/20251218155752.3045808-3-pasha.tatashin@soleen.com Signed-off-by: Pasha Tatashin Reviewed-by: David Gow Cc: Alexander Graf Cc: David Matlack Cc: David Rientjes Cc: Jonathan Corbet Cc: Kees Cook Cc: Mike Rapoport Cc: Petr Mladek Cc: Pratyush Yadav Cc: Samiullah Khawaja Cc: Tamir Duberstein Signed-off-by: Andrew Morton

lib/glob: convert selftest to KUnit

2026-01-27T03:07:13+00:00

This patch converts the existing glob selftest (lib/globtest.c) to use the KUnit framework (lib/tests/glob_kunit.c). The new test: - Migrates all 64 test cases from the original test to the KUnit suite. - Removes the custom 'verbose' module parameter as KUnit handles logging. - Updates Kconfig.debug and Makefile to support the new KUnit test. - Updates Kconfig and Makefile to remove the original selftest. - Updates GLOB_SELFTEST to GLOB_KUNIT_TEST for arch/m68k/configs. This commit is verified by `./tools/testing/kunit/kunit.py run' with the .kunit/.kunitconfig: CONFIG_KUNIT=y CONFIG_GLOB_KUNIT_TEST=y Link: https://lkml.kernel.org/r/20260108120753.27339-1-note351@hotmail.com Signed-off-by: Kir Chou Acked-by: Geert Uytterhoeven Reviewed-by: David Gow Reviewed-by: Kuan-Wei Chiu Cc: Signed-off-by: Andrew Morton

lib/tests: convert test_min_heap module to KUnit

2026-01-27T03:07:10+00:00

Move lib/test_min_heap.c to lib/tests/min_heap_kunit.c and convert it to use KUnit. This change switches the ad-hoc test code to standard KUnit test cases. The test data remains the same, but the verification logic is updated to use KUNIT_EXPECT_* macros. Also remove CONFIG_TEST_MIN_HEAP from arch/*/configs/* because it is no longer used. The new CONFIG_MIN_HEAP_KUNIT_TEST will be automatically enabled by CONFIG_KUNIT_ALL_TESTS. The reasons for converting to KUnit are: 1. Standardization: Switching from ad-hoc printk-based reporting to the standard KTAP format makes it easier for CI systems to parse and report test results 2. Better Diagnostics: Using KUNIT_EXPECT_* macros automatically provides detailed diagnostics on failure. 3. Tooling Integration: It allows the test to be managed and executed using standard KUnit tools. Link: https://lkml.kernel.org/r/20251221133516.321846-1-sakamo.ryota@gmail.com Signed-off-by: Ryota Sakamoto Acked-by: Kuan-Wei Chiu Cc: Alexander Gordeev Cc: Christian Borntraeger Cc: David Gow Cc: Geert Uytterhoeven Cc: Heiko Carstens Cc: Madhavan Srinivasan Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Sven Schnelle Cc: Vasily Gorbik Signed-off-by: Andrew Morton

lib/tests: convert test_uuid module to KUnit

2026-01-21T03:44:18+00:00

Move lib/test_uuid.c to lib/tests/uuid_kunit.c and convert it to use KUnit. This change switches the ad-hoc test code to standard KUnit test cases. The test data remains the same, but the verification logic is updated to use KUNIT_EXPECT_* macros. Also remove CONFIG_TEST_UUID from arch/*/configs/* because it is no longer used. The new CONFIG_UUID_KUNIT_TEST will be automatically enabled by CONFIG_KUNIT_ALL_TESTS. [lukas.bulwahn@redhat.com: MAINTAINERS: adjust file entry in UUID HELPERS] Link: https://lkml.kernel.org/r/20251217053907.2778515-1-lukas.bulwahn@redhat.com Link: https://lkml.kernel.org/r/20251215134322.12949-1-sakamo.ryota@gmail.com Signed-off-by: Ryota Sakamoto Signed-off-by: Lukas Bulwahn Acked-by: Geert Uytterhoeven Reviewed-by: David Gow Cc: Andriy Shevchenko Cc: Brendan Higgins Cc: Lukas Bulwahn Signed-off-by: Andrew Morton

lib: add KUnit tests for base64 encoding/decoding

2025-11-20T22:03:44+00:00

Add a KUnit test suite to validate the base64 helpers. The tests cover both encoding and decoding, including padded and unpadded forms as defined by RFC 4648 (standard base64), and add negative cases for malformed inputs and padding errors. The test suite also validates other variants (URLSAFE, IMAP) to ensure their correctness. In addition to functional checks, the suite includes simple microbenchmarks which report average encode/decode latency for small (64B) and larger (1KB) inputs. These numbers are informational only and do not gate the tests. Kconfig (BASE64_KUNIT) and lib/tests/Makefile are updated accordingly. Sample KUnit output: KTAP version 1 # Subtest: base64 # module: base64_kunit 1..4 # base64_performance_tests: [64B] encode run : 32ns # base64_performance_tests: [64B] decode run : 35ns # base64_performance_tests: [1KB] encode run : 510ns # base64_performance_tests: [1KB] decode run : 530ns ok 1 base64_performance_tests ok 2 base64_std_encode_tests ok 3 base64_std_decode_tests ok 4 base64_variant_tests # base64: pass:4 fail:0 skip:0 total:4 # Totals: pass:4 fail:0 skip:0 total:4 Link: https://lkml.kernel.org/r/20251114060157.89507-1-409411716@gms.tku.edu.tw Signed-off-by: Guan-Chun Wu <409411716@gms.tku.edu.tw> Reviewed-by: Kuan-Wei Chiu Cc: Christoph Hellwig Cc: David Laight Cc: Eric Biggers Cc: Ilya Dryomov Cc: Jaegeuk Kim Cc: Jens Axboe Cc: Keith Busch Cc: Sagi Grimberg Cc: "Theodore Y. Ts'o" Cc: Viacheslav Dubeyko Cc: Xiubo Li Cc: Yu-Sheng Huang Signed-off-by: Andrew Morton

KUnit: Introduce ffs()-family tests

2025-09-08T21:58:50+00:00

Add KUnit tests for ffs()-family bit scanning functions: ffs(), __ffs(), fls(), __fls(), fls64(), __ffs64(), and ffz(). The tests validate mathematical relationships (e.g. ffs(x) == __ffs(x) + 1), and test zero values, power-of-2 patterns, maximum values, and sparse bit patterns. Build and run tested with everything I could reach with KUnit: $ ./tools/testing/kunit/kunit.py run --arch=x86_64 ffs $ ./tools/testing/kunit/kunit.py run --arch=i386 ffs $ ./tools/testing/kunit/kunit.py run --arch=arm64 --make_options "CROSS_COMPILE=aarch64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=arm --make_options "CROSS_COMPILE=arm-linux-gnueabihf-" ffs $ ./tools/testing/kunit/kunit.py run --arch=powerpc ffs $ ./tools/testing/kunit/kunit.py run --arch=powerpc32 ffs $ ./tools/testing/kunit/kunit.py run --arch=powerpcle ffs $ ./tools/testing/kunit/kunit.py run --arch=riscv --make_options "CROSS_COMPILE=riscv64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=riscv32 --make_options "CROSS_COMPILE=riscv64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=s390 --make_options "CROSS_COMPILE=s390x-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=m68k ffs $ ./tools/testing/kunit/kunit.py run --arch=loongarch ffs $ ./tools/testing/kunit/kunit.py run --arch=mips --make_options "CROSS_COMPILE=mipsel-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=sparc --make_options "CROSS_COMPILE=sparc64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=sparc64 --make_options "CROSS_COMPILE=sparc64-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=alpha --make_options "CROSS_COMPILE=alpha-linux-gnu-" ffs $ ./tools/testing/kunit/kunit.py run --arch=sh --make_options "CROSS_COMPILE=sh4-linux-gnu-" ffs Acked-by: Peter Zijlstra (Intel) Link: https://lore.kernel.org/r/20250804164417.1612371-1-kees@kernel.org Signed-off-by: Kees Cook

Merge tag 'ratelimit.2025.07.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

2025-07-29T22:56:03+00:00

Pull ratelimit test updates from Paul McKenney: "Add functional and stress tests: - Add trivial kunit test for ratelimit - Make the ratelimit test more reliable (Petr Mladek) - Add stress test for ratelimit" * tag 'ratelimit.2025.07.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: lib: Add stress test for ratelimit lib: Make the ratelimit test more reliable lib: Add trivial kunit test for ratelimit