Following kernel regressions have been noticed on Linux next-20220426 (till date) on qemu_i386. This is a special build with KFENCE and KUNIT enabled but not KASAN on i386.
snippet of Kconfigs from the build: CONFIG_CC_HAS_KASAN_GENERIC=y CONFIG_KFENCE=y CONFIG_KFENCE_KUNIT_TEST=y CONFIG_KUNIT=y CONFIG_KUNIT_DEBUGFS=y CONFIG_KUNIT_TEST=y CONFIG_KUNIT_EXAMPLE_TEST=y CONFIG_KUNIT_ALL_TESTS=y
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
Regressions found on qemu_i386;:
- kunit/test_free_bulk - kunit/test_memcache_typesafe_by_rcu - kunit/test_out_of_bounds_read-memcache - kunit/test_invalid_access - kunit/test_krealloc - kunit/test_invalid_addr_free - kunit/test_gfpzero - kunit/test_kmalloc_aligned_oob_write - kunit/kfence - kunit/test_out_of_bounds_read - kunit/test_out_of_bounds_write - kunit/test_invalid_addr_free-memcache - kunit/test_double_free - kunit/test_corruption-memcache - kunit/test_use_after_free_read-memcache - kunit/test_corruption - kunit/test_use_after_free_read - kunit/test_shrink_memcache - kunit/test_double_free-memcache - kunit/test_out_of_bounds_write-memcache - kunit/test_kmalloc_aligned_oob_read
full test log link [1]
snippet of test log: [ 4.168302] # test_free_bulk: test_alloc: size=271, gfp=cc0, policy=right, cache=0 [ 4.271599] # test_free_bulk: test_alloc: size=271, gfp=cc0, policy=none, cache=0 [ 4.271611] # test_free_bulk: test_alloc: size=271, gfp=cc0, policy=left, cache=0 [ 4.687568] # test_free_bulk: test_alloc: size=271, gfp=cc0, policy=none, cache=0 [ 4.687581] # test_free_bulk: test_alloc: size=271, gfp=cc0, policy=none, cache=0 [ 4.687616] # test_free_bulk: ASSERTION FAILED at mm/kfence/kfence_test.c:547 [ 4.687616] Expected report_available() to be false, but is true [ 4.687789] not ok 13 - test_free_bulk ... [ 33.294007] # test_memcache_typesafe_by_rcu: EXPECTATION FAILED at mm/kfence/kfence_test.c:687 [ 33.294007] Expected report_matches(&expect) to be true, but is false [ 33.294182] not ok 23 - test_memcache_typesafe_by_rcu [ 33.294183] kunit_try_catch (209) used greatest stack depth: 5840 bytes left [ 33.294619] # test_krealloc: test_alloc: size=32, gfp=cc0, policy=any, cache=0 [ 33.391637] # test_krealloc: ASSERTION FAILED at mm/kfence/kfence_test.c:724 [ 33.391637] Expected report_available() to be false, but is true [ 33.391658] not ok 24 - test_krealloc [ 33.391902] # test_memcache_alloc_bulk: setup_test_cache: size=32, ctor=0x0 [ 33.495801] ok 25 - test_memcache_alloc_bulk [ 33.495808] # kfence: pass:3 fail:20 skip:2 total:25 [ 33.495817] # Totals: pass:3 fail:20 skip:2 total:25 [ 33.495833] not ok 1 - kfence
metadata: git_ref: master git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next git_sha: 088fb7eff3496e0f61fdf68bda89b81a4d0a4434 git_describe: next-20220426 kernel-config: https://builds.tuxbuild.com/28KafYBlDWOxI3qyNmGDwb63GuX/config
-- Linaro LKFT https://lkft.linaro.org
[1] https://lkft.validation.linaro.org/scheduler/job/4950383#L770 [2] https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20220426/tes...