- Linux-kselftest-mirror - lists.linaro.org

[PATCH AUTOSEL 6.1 08/10] kunit: alloc_string_stream_fragment error handling bug fix

by Sasha Levin

From: "YoungJun.park" <her0gyugyu(a)gmail.com> [ Upstream commit 93ef83050e597634d2c7dc838a28caf5137b9404 ] When it fails to allocate fragment, it does not free and return error. And check the pointer inappropriately. Fixed merge conflicts with commit 618887768bb7 ("kunit: update NULL vs IS_ERR() tests") Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: YoungJun.park <her0gyugyu(a)gmail.com> Reviewed-by: David Gow <davidgow(a)google.com> Signed-off-by: Shuah Khan <skhan(a)linuxfoundation.org> Signed-off-by: Sasha Levin <sashal(a)kernel.org> --- lib/kunit/string-stream.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/lib/kunit/string-stream.c b/lib/kunit/string-stream.c index a608746020a9..7aeabe1a3dc5 100644 --- a/lib/kunit/string-stream.c +++ b/lib/kunit/string-stream.c @@ -23,8 +23,10 @@ static struct string_stream_fragment *alloc_string_stream_fragment( return ERR_PTR(-ENOMEM); frag->fragment = kunit_kmalloc(test, len, gfp); - if (!frag->fragment) + if (!frag->fragment) { + kunit_kfree(test, frag); return ERR_PTR(-ENOMEM); + } return frag; } -- 2.35.1

2 years, 9 months

1
0
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[PATCH 4/5] selftests/vm: rename selftets/vm to selftests/mm

by SeongJae Park

Rename selftets/vm to selftests/mm for being more consistent with the code, documentation, and tools directories, and won't be confused with virtual machines. Signed-off-by: SeongJae Park <sj(a)kernel.org> --- Documentation/admin-guide/mm/hugetlbpage.rst | 6 +++--- Documentation/core-api/pin_user_pages.rst | 2 +- MAINTAINERS | 4 ++-- mm/Kconfig | 2 +- tools/testing/selftests/{vm => mm}/.gitignore | 0 tools/testing/selftests/{vm => mm}/Makefile | 0 .../testing/selftests/{vm => mm}/charge_reserved_hugetlb.sh | 0 tools/testing/selftests/{vm => mm}/check_config.sh | 0 tools/testing/selftests/{vm => mm}/compaction_test.c | 0 tools/testing/selftests/{vm => mm}/config | 0 tools/testing/selftests/{vm => mm}/cow.c | 0 tools/testing/selftests/{vm => mm}/gup_test.c | 0 tools/testing/selftests/{vm => mm}/hmm-tests.c | 0 tools/testing/selftests/{vm => mm}/hugepage-mmap.c | 0 tools/testing/selftests/{vm => mm}/hugepage-mremap.c | 0 tools/testing/selftests/{vm => mm}/hugepage-shm.c | 0 tools/testing/selftests/{vm => mm}/hugepage-vmemmap.c | 0 tools/testing/selftests/{vm => mm}/hugetlb-madvise.c | 0 .../selftests/{vm => mm}/hugetlb_reparenting_test.sh | 0 tools/testing/selftests/{vm => mm}/khugepaged.c | 0 tools/testing/selftests/{vm => mm}/ksm_functional_tests.c | 0 tools/testing/selftests/{vm => mm}/ksm_tests.c | 0 tools/testing/selftests/{vm => mm}/madv_populate.c | 0 tools/testing/selftests/{vm => mm}/map_fixed_noreplace.c | 0 tools/testing/selftests/{vm => mm}/map_hugetlb.c | 0 tools/testing/selftests/{vm => mm}/map_populate.c | 0 tools/testing/selftests/{vm => mm}/memfd_secret.c | 0 tools/testing/selftests/{vm => mm}/migration.c | 0 tools/testing/selftests/{vm => mm}/mlock-random-test.c | 0 tools/testing/selftests/{vm => mm}/mlock2-tests.c | 0 tools/testing/selftests/{vm => mm}/mlock2.h | 0 tools/testing/selftests/{vm => mm}/mrelease_test.c | 0 tools/testing/selftests/{vm => mm}/mremap_dontunmap.c | 0 tools/testing/selftests/{vm => mm}/mremap_test.c | 0 tools/testing/selftests/{vm => mm}/on-fault-limit.c | 0 tools/testing/selftests/{vm => mm}/pkey-helpers.h | 0 tools/testing/selftests/{vm => mm}/pkey-powerpc.h | 0 tools/testing/selftests/{vm => mm}/pkey-x86.h | 0 tools/testing/selftests/{vm => mm}/protection_keys.c | 0 tools/testing/selftests/{vm => mm}/run_vmtests.sh | 0 tools/testing/selftests/{vm => mm}/settings | 0 tools/testing/selftests/{vm => mm}/soft-dirty.c | 0 tools/testing/selftests/{vm => mm}/split_huge_page_test.c | 0 tools/testing/selftests/{vm => mm}/test_hmm.sh | 0 tools/testing/selftests/{vm => mm}/test_vmalloc.sh | 0 tools/testing/selftests/{vm => mm}/thuge-gen.c | 0 tools/testing/selftests/{vm => mm}/transhuge-stress.c | 0 tools/testing/selftests/{vm => mm}/userfaultfd.c | 0 tools/testing/selftests/{vm => mm}/util.h | 0 tools/testing/selftests/{vm => mm}/va_128TBswitch.c | 0 tools/testing/selftests/{vm => mm}/va_128TBswitch.sh | 0 tools/testing/selftests/{vm => mm}/virtual_address_range.c | 0 tools/testing/selftests/{vm => mm}/vm_util.c | 0 tools/testing/selftests/{vm => mm}/vm_util.h | 0 tools/testing/selftests/{vm => mm}/write_hugetlb_memory.sh | 0 tools/testing/selftests/{vm => mm}/write_to_hugetlbfs.c | 0 56 files changed, 7 insertions(+), 7 deletions(-) rename tools/testing/selftests/{vm => mm}/.gitignore (100%) rename tools/testing/selftests/{vm => mm}/Makefile (100%) rename tools/testing/selftests/{vm => mm}/charge_reserved_hugetlb.sh (100%) rename tools/testing/selftests/{vm => mm}/check_config.sh (100%) rename tools/testing/selftests/{vm => mm}/compaction_test.c (100%) rename tools/testing/selftests/{vm => mm}/config (100%) rename tools/testing/selftests/{vm => mm}/cow.c (100%) rename tools/testing/selftests/{vm => mm}/gup_test.c (100%) rename tools/testing/selftests/{vm => mm}/hmm-tests.c (100%) rename tools/testing/selftests/{vm => mm}/hugepage-mmap.c (100%) rename tools/testing/selftests/{vm => mm}/hugepage-mremap.c (100%) rename tools/testing/selftests/{vm => mm}/hugepage-shm.c (100%) rename tools/testing/selftests/{vm => mm}/hugepage-vmemmap.c (100%) rename tools/testing/selftests/{vm => mm}/hugetlb-madvise.c (100%) rename tools/testing/selftests/{vm => mm}/hugetlb_reparenting_test.sh (100%) rename tools/testing/selftests/{vm => mm}/khugepaged.c (100%) rename tools/testing/selftests/{vm => mm}/ksm_functional_tests.c (100%) rename tools/testing/selftests/{vm => mm}/ksm_tests.c (100%) rename tools/testing/selftests/{vm => mm}/madv_populate.c (100%) rename tools/testing/selftests/{vm => mm}/map_fixed_noreplace.c (100%) rename tools/testing/selftests/{vm => mm}/map_hugetlb.c (100%) rename tools/testing/selftests/{vm => mm}/map_populate.c (100%) rename tools/testing/selftests/{vm => mm}/memfd_secret.c (100%) rename tools/testing/selftests/{vm => mm}/migration.c (100%) rename tools/testing/selftests/{vm => mm}/mlock-random-test.c (100%) rename tools/testing/selftests/{vm => mm}/mlock2-tests.c (100%) rename tools/testing/selftests/{vm => mm}/mlock2.h (100%) rename tools/testing/selftests/{vm => mm}/mrelease_test.c (100%) rename tools/testing/selftests/{vm => mm}/mremap_dontunmap.c (100%) rename tools/testing/selftests/{vm => mm}/mremap_test.c (100%) rename tools/testing/selftests/{vm => mm}/on-fault-limit.c (100%) rename tools/testing/selftests/{vm => mm}/pkey-helpers.h (100%) rename tools/testing/selftests/{vm => mm}/pkey-powerpc.h (100%) rename tools/testing/selftests/{vm => mm}/pkey-x86.h (100%) rename tools/testing/selftests/{vm => mm}/protection_keys.c (100%) rename tools/testing/selftests/{vm => mm}/run_vmtests.sh (100%) rename tools/testing/selftests/{vm => mm}/settings (100%) rename tools/testing/selftests/{vm => mm}/soft-dirty.c (100%) rename tools/testing/selftests/{vm => mm}/split_huge_page_test.c (100%) rename tools/testing/selftests/{vm => mm}/test_hmm.sh (100%) rename tools/testing/selftests/{vm => mm}/test_vmalloc.sh (100%) rename tools/testing/selftests/{vm => mm}/thuge-gen.c (100%) rename tools/testing/selftests/{vm => mm}/transhuge-stress.c (100%) rename tools/testing/selftests/{vm => mm}/userfaultfd.c (100%) rename tools/testing/selftests/{vm => mm}/util.h (100%) rename tools/testing/selftests/{vm => mm}/va_128TBswitch.c (100%) rename tools/testing/selftests/{vm => mm}/va_128TBswitch.sh (100%) rename tools/testing/selftests/{vm => mm}/virtual_address_range.c (100%) rename tools/testing/selftests/{vm => mm}/vm_util.c (100%) rename tools/testing/selftests/{vm => mm}/vm_util.h (100%) rename tools/testing/selftests/{vm => mm}/write_hugetlb_memory.sh (100%) rename tools/testing/selftests/{vm => mm}/write_to_hugetlbfs.c (100%) diff --git a/Documentation/admin-guide/mm/hugetlbpage.rst b/Documentation/admin-guide/mm/hugetlbpage.rst index 19f27c0d92e0..a969a2c742b2 100644 --- a/Documentation/admin-guide/mm/hugetlbpage.rst +++ b/Documentation/admin-guide/mm/hugetlbpage.rst @@ -461,13 +461,13 @@ Examples .. _map_hugetlb: ``map_hugetlb`` - see tools/testing/selftests/vm/map_hugetlb.c + see tools/testing/selftests/mm/map_hugetlb.c ``hugepage-shm`` - see tools/testing/selftests/vm/hugepage-shm.c + see tools/testing/selftests/mm/hugepage-shm.c ``hugepage-mmap`` - see tools/testing/selftests/vm/hugepage-mmap.c + see tools/testing/selftests/mm/hugepage-mmap.c The `libhugetlbfs`_ library provides a wide range of userspace tools to help with huge page usability, environment setup, and control. diff --git a/Documentation/core-api/pin_user_pages.rst b/Documentation/core-api/pin_user_pages.rst index b18416f4500f..facafbdecb95 100644 --- a/Documentation/core-api/pin_user_pages.rst +++ b/Documentation/core-api/pin_user_pages.rst @@ -221,7 +221,7 @@ Unit testing ============ This file:: - tools/testing/selftests/vm/gup_test.c + tools/testing/selftests/mm/gup_test.c has the following new calls to exercise the new pin*() wrapper functions: diff --git a/MAINTAINERS b/MAINTAINERS index 65426446f09a..ba0a8d292f2d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9466,7 +9466,7 @@ F: Documentation/mm/hmm.rst F: include/linux/hmm* F: lib/test_hmm* F: mm/hmm* -F: tools/testing/selftests/vm/*hmm* +F: tools/testing/selftests/mm/*hmm* HOST AP DRIVER M: Jouni Malinen <j(a)w1.fi> @@ -13484,7 +13484,7 @@ F: include/linux/mmzone.h F: include/linux/pagewalk.h F: mm/ F: tools/mm/ -F: tools/testing/selftests/vm/ +F: tools/testing/selftests/mm/ VMALLOC M: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/mm/Kconfig b/mm/Kconfig index ff7b209dec05..39df30dcabe3 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -1073,7 +1073,7 @@ config GUP_TEST pin_user_pages*(), or pinned via get_user_pages*(), as specified by other command line arguments. - See tools/testing/selftests/vm/gup_test.c + See tools/testing/selftests/mm/gup_test.c comment "GUP_TEST needs to have DEBUG_FS enabled" depends on !GUP_TEST && !DEBUG_FS diff --git a/tools/testing/selftests/vm/.gitignore b/tools/testing/selftests/mm/.gitignore similarity index 100% rename from tools/testing/selftests/vm/.gitignore rename to tools/testing/selftests/mm/.gitignore diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/mm/Makefile similarity index 100% rename from tools/testing/selftests/vm/Makefile rename to tools/testing/selftests/mm/Makefile diff --git a/tools/testing/selftests/vm/charge_reserved_hugetlb.sh b/tools/testing/selftests/mm/charge_reserved_hugetlb.sh similarity index 100% rename from tools/testing/selftests/vm/charge_reserved_hugetlb.sh rename to tools/testing/selftests/mm/charge_reserved_hugetlb.sh diff --git a/tools/testing/selftests/vm/check_config.sh b/tools/testing/selftests/mm/check_config.sh similarity index 100% rename from tools/testing/selftests/vm/check_config.sh rename to tools/testing/selftests/mm/check_config.sh diff --git a/tools/testing/selftests/vm/compaction_test.c b/tools/testing/selftests/mm/compaction_test.c similarity index 100% rename from tools/testing/selftests/vm/compaction_test.c rename to tools/testing/selftests/mm/compaction_test.c diff --git a/tools/testing/selftests/vm/config b/tools/testing/selftests/mm/config similarity index 100% rename from tools/testing/selftests/vm/config rename to tools/testing/selftests/mm/config diff --git a/tools/testing/selftests/vm/cow.c b/tools/testing/selftests/mm/cow.c similarity index 100% rename from tools/testing/selftests/vm/cow.c rename to tools/testing/selftests/mm/cow.c diff --git a/tools/testing/selftests/vm/gup_test.c b/tools/testing/selftests/mm/gup_test.c similarity index 100% rename from tools/testing/selftests/vm/gup_test.c rename to tools/testing/selftests/mm/gup_test.c diff --git a/tools/testing/selftests/vm/hmm-tests.c b/tools/testing/selftests/mm/hmm-tests.c similarity index 100% rename from tools/testing/selftests/vm/hmm-tests.c rename to tools/testing/selftests/mm/hmm-tests.c diff --git a/tools/testing/selftests/vm/hugepage-mmap.c b/tools/testing/selftests/mm/hugepage-mmap.c similarity index 100% rename from tools/testing/selftests/vm/hugepage-mmap.c rename to tools/testing/selftests/mm/hugepage-mmap.c diff --git a/tools/testing/selftests/vm/hugepage-mremap.c b/tools/testing/selftests/mm/hugepage-mremap.c similarity index 100% rename from tools/testing/selftests/vm/hugepage-mremap.c rename to tools/testing/selftests/mm/hugepage-mremap.c diff --git a/tools/testing/selftests/vm/hugepage-shm.c b/tools/testing/selftests/mm/hugepage-shm.c similarity index 100% rename from tools/testing/selftests/vm/hugepage-shm.c rename to tools/testing/selftests/mm/hugepage-shm.c diff --git a/tools/testing/selftests/vm/hugepage-vmemmap.c b/tools/testing/selftests/mm/hugepage-vmemmap.c similarity index 100% rename from tools/testing/selftests/vm/hugepage-vmemmap.c rename to tools/testing/selftests/mm/hugepage-vmemmap.c diff --git a/tools/testing/selftests/vm/hugetlb-madvise.c b/tools/testing/selftests/mm/hugetlb-madvise.c similarity index 100% rename from tools/testing/selftests/vm/hugetlb-madvise.c rename to tools/testing/selftests/mm/hugetlb-madvise.c diff --git a/tools/testing/selftests/vm/hugetlb_reparenting_test.sh b/tools/testing/selftests/mm/hugetlb_reparenting_test.sh similarity index 100% rename from tools/testing/selftests/vm/hugetlb_reparenting_test.sh rename to tools/testing/selftests/mm/hugetlb_reparenting_test.sh diff --git a/tools/testing/selftests/vm/khugepaged.c b/tools/testing/selftests/mm/khugepaged.c similarity index 100% rename from tools/testing/selftests/vm/khugepaged.c rename to tools/testing/selftests/mm/khugepaged.c diff --git a/tools/testing/selftests/vm/ksm_functional_tests.c b/tools/testing/selftests/mm/ksm_functional_tests.c similarity index 100% rename from tools/testing/selftests/vm/ksm_functional_tests.c rename to tools/testing/selftests/mm/ksm_functional_tests.c diff --git a/tools/testing/selftests/vm/ksm_tests.c b/tools/testing/selftests/mm/ksm_tests.c similarity index 100% rename from tools/testing/selftests/vm/ksm_tests.c rename to tools/testing/selftests/mm/ksm_tests.c diff --git a/tools/testing/selftests/vm/madv_populate.c b/tools/testing/selftests/mm/madv_populate.c similarity index 100% rename from tools/testing/selftests/vm/madv_populate.c rename to tools/testing/selftests/mm/madv_populate.c diff --git a/tools/testing/selftests/vm/map_fixed_noreplace.c b/tools/testing/selftests/mm/map_fixed_noreplace.c similarity index 100% rename from tools/testing/selftests/vm/map_fixed_noreplace.c rename to tools/testing/selftests/mm/map_fixed_noreplace.c diff --git a/tools/testing/selftests/vm/map_hugetlb.c b/tools/testing/selftests/mm/map_hugetlb.c similarity index 100% rename from tools/testing/selftests/vm/map_hugetlb.c rename to tools/testing/selftests/mm/map_hugetlb.c diff --git a/tools/testing/selftests/vm/map_populate.c b/tools/testing/selftests/mm/map_populate.c similarity index 100% rename from tools/testing/selftests/vm/map_populate.c rename to tools/testing/selftests/mm/map_populate.c diff --git a/tools/testing/selftests/vm/memfd_secret.c b/tools/testing/selftests/mm/memfd_secret.c similarity index 100% rename from tools/testing/selftests/vm/memfd_secret.c rename to tools/testing/selftests/mm/memfd_secret.c diff --git a/tools/testing/selftests/vm/migration.c b/tools/testing/selftests/mm/migration.c similarity index 100% rename from tools/testing/selftests/vm/migration.c rename to tools/testing/selftests/mm/migration.c diff --git a/tools/testing/selftests/vm/mlock-random-test.c b/tools/testing/selftests/mm/mlock-random-test.c similarity index 100% rename from tools/testing/selftests/vm/mlock-random-test.c rename to tools/testing/selftests/mm/mlock-random-test.c diff --git a/tools/testing/selftests/vm/mlock2-tests.c b/tools/testing/selftests/mm/mlock2-tests.c similarity index 100% rename from tools/testing/selftests/vm/mlock2-tests.c rename to tools/testing/selftests/mm/mlock2-tests.c diff --git a/tools/testing/selftests/vm/mlock2.h b/tools/testing/selftests/mm/mlock2.h similarity index 100% rename from tools/testing/selftests/vm/mlock2.h rename to tools/testing/selftests/mm/mlock2.h diff --git a/tools/testing/selftests/vm/mrelease_test.c b/tools/testing/selftests/mm/mrelease_test.c similarity index 100% rename from tools/testing/selftests/vm/mrelease_test.c rename to tools/testing/selftests/mm/mrelease_test.c diff --git a/tools/testing/selftests/vm/mremap_dontunmap.c b/tools/testing/selftests/mm/mremap_dontunmap.c similarity index 100% rename from tools/testing/selftests/vm/mremap_dontunmap.c rename to tools/testing/selftests/mm/mremap_dontunmap.c diff --git a/tools/testing/selftests/vm/mremap_test.c b/tools/testing/selftests/mm/mremap_test.c similarity index 100% rename from tools/testing/selftests/vm/mremap_test.c rename to tools/testing/selftests/mm/mremap_test.c diff --git a/tools/testing/selftests/vm/on-fault-limit.c b/tools/testing/selftests/mm/on-fault-limit.c similarity index 100% rename from tools/testing/selftests/vm/on-fault-limit.c rename to tools/testing/selftests/mm/on-fault-limit.c diff --git a/tools/testing/selftests/vm/pkey-helpers.h b/tools/testing/selftests/mm/pkey-helpers.h similarity index 100% rename from tools/testing/selftests/vm/pkey-helpers.h rename to tools/testing/selftests/mm/pkey-helpers.h diff --git a/tools/testing/selftests/vm/pkey-powerpc.h b/tools/testing/selftests/mm/pkey-powerpc.h similarity index 100% rename from tools/testing/selftests/vm/pkey-powerpc.h rename to tools/testing/selftests/mm/pkey-powerpc.h diff --git a/tools/testing/selftests/vm/pkey-x86.h b/tools/testing/selftests/mm/pkey-x86.h similarity index 100% rename from tools/testing/selftests/vm/pkey-x86.h rename to tools/testing/selftests/mm/pkey-x86.h diff --git a/tools/testing/selftests/vm/protection_keys.c b/tools/testing/selftests/mm/protection_keys.c similarity index 100% rename from tools/testing/selftests/vm/protection_keys.c rename to tools/testing/selftests/mm/protection_keys.c diff --git a/tools/testing/selftests/vm/run_vmtests.sh b/tools/testing/selftests/mm/run_vmtests.sh similarity index 100% rename from tools/testing/selftests/vm/run_vmtests.sh rename to tools/testing/selftests/mm/run_vmtests.sh diff --git a/tools/testing/selftests/vm/settings b/tools/testing/selftests/mm/settings similarity index 100% rename from tools/testing/selftests/vm/settings rename to tools/testing/selftests/mm/settings diff --git a/tools/testing/selftests/vm/soft-dirty.c b/tools/testing/selftests/mm/soft-dirty.c similarity index 100% rename from tools/testing/selftests/vm/soft-dirty.c rename to tools/testing/selftests/mm/soft-dirty.c diff --git a/tools/testing/selftests/vm/split_huge_page_test.c b/tools/testing/selftests/mm/split_huge_page_test.c similarity index 100% rename from tools/testing/selftests/vm/split_huge_page_test.c rename to tools/testing/selftests/mm/split_huge_page_test.c diff --git a/tools/testing/selftests/vm/test_hmm.sh b/tools/testing/selftests/mm/test_hmm.sh similarity index 100% rename from tools/testing/selftests/vm/test_hmm.sh rename to tools/testing/selftests/mm/test_hmm.sh diff --git a/tools/testing/selftests/vm/test_vmalloc.sh b/tools/testing/selftests/mm/test_vmalloc.sh similarity index 100% rename from tools/testing/selftests/vm/test_vmalloc.sh rename to tools/testing/selftests/mm/test_vmalloc.sh diff --git a/tools/testing/selftests/vm/thuge-gen.c b/tools/testing/selftests/mm/thuge-gen.c similarity index 100% rename from tools/testing/selftests/vm/thuge-gen.c rename to tools/testing/selftests/mm/thuge-gen.c diff --git a/tools/testing/selftests/vm/transhuge-stress.c b/tools/testing/selftests/mm/transhuge-stress.c similarity index 100% rename from tools/testing/selftests/vm/transhuge-stress.c rename to tools/testing/selftests/mm/transhuge-stress.c diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/mm/userfaultfd.c similarity index 100% rename from tools/testing/selftests/vm/userfaultfd.c rename to tools/testing/selftests/mm/userfaultfd.c diff --git a/tools/testing/selftests/vm/util.h b/tools/testing/selftests/mm/util.h similarity index 100% rename from tools/testing/selftests/vm/util.h rename to tools/testing/selftests/mm/util.h diff --git a/tools/testing/selftests/vm/va_128TBswitch.c b/tools/testing/selftests/mm/va_128TBswitch.c similarity index 100% rename from tools/testing/selftests/vm/va_128TBswitch.c rename to tools/testing/selftests/mm/va_128TBswitch.c diff --git a/tools/testing/selftests/vm/va_128TBswitch.sh b/tools/testing/selftests/mm/va_128TBswitch.sh similarity index 100% rename from tools/testing/selftests/vm/va_128TBswitch.sh rename to tools/testing/selftests/mm/va_128TBswitch.sh diff --git a/tools/testing/selftests/vm/virtual_address_range.c b/tools/testing/selftests/mm/virtual_address_range.c similarity index 100% rename from tools/testing/selftests/vm/virtual_address_range.c rename to tools/testing/selftests/mm/virtual_address_range.c diff --git a/tools/testing/selftests/vm/vm_util.c b/tools/testing/selftests/mm/vm_util.c similarity index 100% rename from tools/testing/selftests/vm/vm_util.c rename to tools/testing/selftests/mm/vm_util.c diff --git a/tools/testing/selftests/vm/vm_util.h b/tools/testing/selftests/mm/vm_util.h similarity index 100% rename from tools/testing/selftests/vm/vm_util.h rename to tools/testing/selftests/mm/vm_util.h diff --git a/tools/testing/selftests/vm/write_hugetlb_memory.sh b/tools/testing/selftests/mm/write_hugetlb_memory.sh similarity index 100% rename from tools/testing/selftests/vm/write_hugetlb_memory.sh rename to tools/testing/selftests/mm/write_hugetlb_memory.sh diff --git a/tools/testing/selftests/vm/write_to_hugetlbfs.c b/tools/testing/selftests/mm/write_to_hugetlbfs.c similarity index 100% rename from tools/testing/selftests/vm/write_to_hugetlbfs.c rename to tools/testing/selftests/mm/write_to_hugetlbfs.c -- 2.25.1

2 years, 9 months

1
0
0 0

[PATCH v3 2/2] selftests/kexec: enable lockdown tests

by Coiby Xu

When lockdown is enabled, kexec_load syscall should always fail. For kexec_file_load, when lockdown is enabled, it should - fail of missing PE signature when KEXEC_SIG is enabled - fail of missing IMA signature when KEXEC_SIG is disabled Before this patch, test_kexec_load.sh fails (false positive) and test_kexec_file_load.sh fails without a reason when lockdown enabled and KEXEC_SIG disabled, # kexec_load failed [FAIL] not ok 1 selftests: kexec: test_kexec_load.sh # exit=1 # kexec_file_load failed [PASS] ok 2 selftests: kexec: test_kexec_file_load.sh After this patch, test_kexec_load.sh succeeds and test_kexec_file_load.sh fails with the correct reason when lockdown enabled and KEXEC_SIG disabled, # kexec_load failed [PASS] ok 1 selftests: kexec: test_kexec_load.sh # kexec_file_load failed (missing IMA sig) [PASS] ok 2 selftests: kexec: test_kexec_file_load.sh Cc: kexec(a)lists.infradead.org Cc: linux-integrity(a)vger.kernel.org Suggested-by: Mimi Zohar <zohar(a)linux.ibm.com> Signed-off-by: Coiby Xu <coxu(a)redhat.com> --- .../selftests/kexec/kexec_common_lib.sh | 16 +++++++++++ .../selftests/kexec/test_kexec_file_load.sh | 27 +++++++++++++++++++ .../selftests/kexec/test_kexec_load.sh | 12 ++++++--- 3 files changed, 52 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/kexec/kexec_common_lib.sh b/tools/testing/selftests/kexec/kexec_common_lib.sh index 641ef05863b2..06c298b46788 100755 --- a/tools/testing/selftests/kexec/kexec_common_lib.sh +++ b/tools/testing/selftests/kexec/kexec_common_lib.sh @@ -110,6 +110,22 @@ get_secureboot_mode() return $secureboot_mode; } +is_lockdown_enabled() +{ + local ret=0 + + if [ -f /sys/kernel/security/lockdown ] \ + && ! grep -qs "\[none\]" /sys/kernel/security/lockdown; then + ret=1 + fi + + if [ $ret -eq 0 ]; then + log_info "lockdown not enabled" + fi + + return $ret +} + require_root_privileges() { if [ $(id -ru) -ne 0 ]; then diff --git a/tools/testing/selftests/kexec/test_kexec_file_load.sh b/tools/testing/selftests/kexec/test_kexec_file_load.sh index c9ccb3c93d72..790f96938083 100755 --- a/tools/testing/selftests/kexec/test_kexec_file_load.sh +++ b/tools/testing/selftests/kexec/test_kexec_file_load.sh @@ -139,6 +139,16 @@ kexec_file_load_test() log_fail "$succeed_msg (missing IMA sig)" fi + if [ $lockdown -eq 1 ] && [ $kexec_sig_enabled -eq 1 ] \ + && [ $pe_signed -eq 0 ]; then + log_fail "$succeed_msg (missing PE sig)" + fi + + if [ $lockdown -eq 1 ] && [ $kexec_sig_enabled -eq 0 ] && [ $ima_signed -eq 0 ] \ + && [ $ima_modsig -eq 0 ]; then + log_fail "$succeed_msg (missing IMA sig)" + fi + if [ $pe_sig_required -eq 0 ] && [ $ima_appraise -eq 1 ] \ && [ $ima_sig_required -eq 0 ] && [ $ima_signed -eq 0 ] \ && [ $ima_read_policy -eq 0 ]; then @@ -181,6 +191,16 @@ kexec_file_load_test() log_pass "$failed_msg (possibly missing IMA sig)" fi + if [ $lockdown -eq 1 ] && [ $kexec_sig_enabled -eq 1 ] \ + && [ $pe_signed -eq 0 ]; then + log_pass "$failed_msg (missing PE sig)" + fi + + if [ $lockdown -eq 1 ] && [ $kexec_sig_enabled -eq 0 ] \ + && [ $ima_signed -eq 0 ] && [ $ima_modsig -eq 0 ]; then + log_pass "$failed_msg (missing IMA sig)" + fi + log_pass "$failed_msg" return 0 } @@ -215,6 +235,10 @@ kconfig_enabled "CONFIG_KEXEC_SIG_FORCE=y" \ "kexec signed kernel image required" kexec_sig_required=$? +kconfig_enabled "CONFIG_KEXEC_SIG=y" \ + "KEXEC_SIG enabled" +kexec_sig_enabled=$? + kconfig_enabled "CONFIG_KEXEC_BZIMAGE_VERIFY_SIG=y" \ "PE signed kernel image required" pe_sig_required=$? @@ -225,6 +249,9 @@ ima_sig_required=$? get_secureboot_mode secureboot=$? +is_lockdown_enabled +lockdown=$? + # Are there pe and ima signatures if [ "$(get_arch)" == 'ppc64le' ]; then pe_signed=0 diff --git a/tools/testing/selftests/kexec/test_kexec_load.sh b/tools/testing/selftests/kexec/test_kexec_load.sh index 49c6aa929137..0542887866c0 100755 --- a/tools/testing/selftests/kexec/test_kexec_load.sh +++ b/tools/testing/selftests/kexec/test_kexec_load.sh @@ -28,18 +28,24 @@ arch_policy=$? get_secureboot_mode secureboot=$? -# kexec_load should fail in secure boot mode and CONFIG_IMA_ARCH_POLICY enabled +is_lockdown_enabled +lockdown=$? + +# kexec_load should fail in either +# a) secure boot mode and CONFIG_IMA_ARCH_POLICY enabled +# or +# b) lockdown enabled kexec --load $KERNEL_IMAGE > /dev/null 2>&1 if [ $? -eq 0 ]; then kexec --unload - if [ $secureboot -eq 1 ] && [ $arch_policy -eq 1 ]; then + if [ $secureboot -eq 1 -a $arch_policy -eq 1 ] || [ $lockdown -eq 1 ]; then log_fail "kexec_load succeeded" elif [ $ima_appraise -eq 0 -o $arch_policy -eq 0 ]; then log_info "Either IMA or the IMA arch policy is not enabled" fi log_pass "kexec_load succeeded" else - if [ $secureboot -eq 1 ] && [ $arch_policy -eq 1 ] ; then + if [ $secureboot -eq 1 -a $arch_policy -eq 1 ] || [ $lockdown -eq 1 ]; then log_pass "kexec_load failed" else log_fail "kexec_load failed" -- 2.38.1

2 years, 9 months

2
1
0 0

PATCH [1/1]: Bug with sockaddr size in net/af_unix/test_unix_oob.c

by Mirsad Goran Todorovac

Hi all, There is a minor issue that prevents self test net/af_unix to run on my platform: # ./test_unix_oob Connect failed: No such file or directory Terminated Tracing reveals that bind tried to open a shorter AF_UNIX socket address: # strace -f ./test_unix_oob . . . socket(AF_UNIX, SOCK_STREAM, 0) = 3 getpid() = 453059 unlink("unix_oob_453059") = -1 ENOENT (No such file or directory) bind(3, {sa_family=AF_UNIX, sun_path="unix_oob_453059"}, 110) = 0 pipe2([4, 5], 0) = 0 listen(3, 1) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7fa6a6577a10) = 453060 rt_sigaction(SIGURG, {sa_handler=0x5601e2d014c9, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fa6a623bcf0}, NULL, 8) = 0 write(5, "S", 1) = 1 accept(3, strace: Process 453060 attached <unfinished ...> [pid 453060] set_robust_list(0x7fa6a6577a20, 24) = 0 [pid 453060] socket(AF_UNIX, SOCK_STREAM, 0) = 6 [pid 453060] read(4, "S", 5) = 1 [pid 453060] connect(6, {sa_family=AF_UNIX, sun_path="unix_oob_45305"}, 16) = -1 ENOENT (No such file or directory) . . . NOTE: bind used UNIX_AF addr "unix_oob_453059", while producer tries to connect to "unix_oob_45305". When pids were up to 5 digits it probably did not manifest, but logically the size of the consumer_addr is sizeof(struct sockaddr_un). Please find the patch attached: Thanks, Mirsad ------------------------------------------------------------------------------------------------ diff --git a/tools/testing/selftests/net/af_unix/test_unix_oob.c b/tools/testing/selftests/net/af_unix/test_unix_oob.c index b57e91e1c3f2..7ea733239cd9 100644 --- a/tools/testing/selftests/net/af_unix/test_unix_oob.c +++ b/tools/testing/selftests/net/af_unix/test_unix_oob.c @@ -124,7 +124,7 @@ void producer(struct sockaddr_un *consumer_addr) wait_for_signal(pipefd[0]); if (connect(cfd, (struct sockaddr *)consumer_addr, - sizeof(struct sockaddr)) != 0) { + sizeof(struct sockaddr_un)) != 0) { perror("Connect failed"); kill(0, SIGTERM); exit(1); -- Mirsad Goran Todorovac Sistem inženjer Grafički fakultet | Akademija likovnih umjetnosti Sveučilište u Zagrebu -- System engineer Faculty of Graphic Arts | Academy of Fine Arts University of Zagreb, Republic of Croatia The European Union

2 years, 9 months

2
1
0 0

[PATCH] selftests/mount_setattr: Remove redefinition of struct mount_attr

by Siddh Raman Pant

It is already included via sys/mount.h on line 10. GCC error reproducible by: make kselftest TARGETS="mount_setattr" mount_setattr_test.c:107:8: error: redefinition of ‘struct mount_attr’ 107 | struct mount_attr { | ^~~~~~~~~~ In file included from /usr/include/x86_64-linux-gnu/sys/mount.h:32, from mount_setattr_test.c:10: ../../../../usr/include/linux/mount.h:129:8: note: originally defined here 129 | struct mount_attr { | ^~~~~~~~~~ Signed-off-by: Siddh Raman Pant <code(a)siddh.me> --- tools/testing/selftests/mount_setattr/mount_setattr_test.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/tools/testing/selftests/mount_setattr/mount_setattr_test.c b/tools/testing/selftests/mount_setattr/mount_setattr_test.c index 8c5fea68ae67..582669ca38e9 100644 --- a/tools/testing/selftests/mount_setattr/mount_setattr_test.c +++ b/tools/testing/selftests/mount_setattr/mount_setattr_test.c @@ -103,13 +103,6 @@ #else #define __NR_mount_setattr 442 #endif - -struct mount_attr { - __u64 attr_set; - __u64 attr_clr; - __u64 propagation; - __u64 userns_fd; -}; #endif #ifndef __NR_open_tree -- 2.35.1

2 years, 9 months

2
2
0 0

[PATCH v4 0/7] kselftest/alsa: pcm-test improvements

by Mark Brown

This series provides a bunch of quick updates which should make the coverage from pcm-test a bit more useful, it adds some support for skipping tests when the hardware/driver is unable to support the requested configuration, support for providing user visible descriptions and then expands the set of cases we cover to include more sample rates and channel counts. This should exercise switching between 8kHz and 44.1kHz based rates and ensure that clocking doesn't get confused by non-stereo channel counts, both of which are I expect common real world errors, at least for embedded cards. v4: - Rebase onto v6.2-rc1. v3: - "Rebase" onto Takashi's current tree (with a revert). - Include Jaroslav's changes to specify all tests in the configuration file parsing. - Add a new "description" field to the configuration instead of trying to name the tests. - Always run both default and per-system tests, logging our success at setting the per-system configurations as a separate test since they shouldn't fail. v2: - Rebase onto Takashi's current tree. - Tweak the buffer sizes for the newly added cases, don't be quite so ambitious in how big a buffer we request for 96kHz and don't go quite so small for 8kHz since some devices start hitting lower limits on period size and struggle to deliver accurate timing. To: Takashi Iwai <tiwai(a)suse.com> To: Jaroslav Kysela <perex(a)perex.cz> To: Shuah Khan <shuah(a)kernel.org> Cc: alsa-devel(a)alsa-project.org Cc: linux-kselftest(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Signed-off-by: Mark Brown <broonie(a)kernel.org> --- Jaroslav Kysela (1): kselftest/alsa: pcm - move more configuration to configuration files Mark Brown (6): kselftest/alsa: pcm - Drop recent coverage improvement changes kselftest/alsa: pcm - Always run the default set of tests kselftest/alsa: pcm - skip tests when we fail to set params kselftest/alsa: pcm - Support optional description for tests kselftest/alsa: pcm - Provide descriptions for the default tests kselftest/alsa: pcm - Add more coverage by default tools/testing/selftests/alsa/Makefile | 2 +- tools/testing/selftests/alsa/alsa-local.h | 3 + tools/testing/selftests/alsa/conf.c | 26 ++- .../alsa/conf.d/Lenovo_ThinkPad_P1_Gen2.conf | 43 +++-- tools/testing/selftests/alsa/pcm-test.c | 205 ++++++++++++++------- tools/testing/selftests/alsa/pcm-test.conf | 63 +++++++ 6 files changed, 250 insertions(+), 92 deletions(-) --- base-commit: 1b929c02afd37871d5afb9d498426f83432e71c2 change-id: 20221208-alsa-pcm-test-hacks-f6c1aa76bd2c Best regards, -- Mark Brown <broonie(a)kernel.org>

2 years, 9 months

2
8
0 0

[PATCH v4] selftest/vm: add mremap expand merge offset test

by Lorenzo Stoakes

Add a test to assert that we can mremap() and expand a mapping starting from an offset within an existing mapping. We unmap the last page in a 3 page mapping to ensure that the remap should always succeed, before remapping from the 2nd page. This is additionally a regression test for the issue solved in "mm, mremap: fix mremap() expanding vma with addr inside vma" and confirmed to fail prior to the change and pass after it. Finally, this patch updates the existing mremap expand merge test to check error conditions and reduce code duplication between the two tests. Signed-off-by: Lorenzo Stoakes <lstoakes(a)gmail.com> --- tools/testing/selftests/vm/mremap_test.c | 117 ++++++++++++++++++----- 1 file changed, 95 insertions(+), 22 deletions(-) diff --git a/tools/testing/selftests/vm/mremap_test.c b/tools/testing/selftests/vm/mremap_test.c index 9496346973d4..a705dfe7b259 100644 --- a/tools/testing/selftests/vm/mremap_test.c +++ b/tools/testing/selftests/vm/mremap_test.c @@ -119,47 +119,109 @@ static unsigned long long get_mmap_min_addr(void) } /* - * This test validates that merge is called when expanding a mapping. - * Mapping containing three pages is created, middle page is unmapped - * and then the mapping containing the first page is expanded so that - * it fills the created hole. The two parts should merge creating - * single mapping with three pages. + * Using /proc/self/maps, assert that the specified address range is contained + * within a single mapping. */ -static void mremap_expand_merge(unsigned long page_size) +static bool is_range_mapped(FILE *maps_fp, void *start, void *end) { - char *test_name = "mremap expand merge"; - FILE *fp; char *line = NULL; size_t len = 0; bool success = false; - char *start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - - munmap(start + page_size, page_size); - mremap(start, page_size, 2 * page_size, 0); - fp = fopen("/proc/self/maps", "r"); - if (fp == NULL) { - ksft_test_result_fail("%s\n", test_name); - return; - } + rewind(maps_fp); - while (getline(&line, &len, fp) != -1) { + while (getline(&line, &len, maps_fp) != -1) { char *first = strtok(line, "- "); void *first_val = (void *)strtol(first, NULL, 16); char *second = strtok(NULL, "- "); void *second_val = (void *) strtol(second, NULL, 16); - if (first_val == start && second_val == start + 3 * page_size) { + if (first_val <= start && second_val >= end) { success = true; break; } } + + return success; +} + +/* + * This test validates that merge is called when expanding a mapping. + * Mapping containing three pages is created, middle page is unmapped + * and then the mapping containing the first page is expanded so that + * it fills the created hole. The two parts should merge creating + * single mapping with three pages. + */ +static void mremap_expand_merge(FILE *maps_fp, unsigned long page_size) +{ + char *test_name = "mremap expand merge"; + bool success = false; + char *remap, *start; + + start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (start == MAP_FAILED) { + ksft_print_msg("mmap failed: %s\n", strerror(errno)); + goto out; + } + + munmap(start + page_size, page_size); + remap = mremap(start, page_size, 2 * page_size, 0); + if (remap == MAP_FAILED) { + ksft_print_msg("mremap failed: %s\n", strerror(errno)); + munmap(start, page_size); + munmap(start + 2 * page_size, page_size); + goto out; + } + + success = is_range_mapped(maps_fp, start, start + 3 * page_size); + munmap(start, 3 * page_size); + +out: + if (success) + ksft_test_result_pass("%s\n", test_name); + else + ksft_test_result_fail("%s\n", test_name); +} + +/* + * Similar to mremap_expand_merge() except instead of removing the middle page, + * we remove the last then attempt to remap offset from the second page. This + * should result in the mapping being restored to its former state. + */ +static void mremap_expand_merge_offset(FILE *maps_fp, unsigned long page_size) +{ + + char *test_name = "mremap expand merge offset"; + bool success = false; + char *remap, *start; + + start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (start == MAP_FAILED) { + ksft_print_msg("mmap failed: %s\n", strerror(errno)); + goto out; + } + + /* Unmap final page to ensure we have space to expand. */ + munmap(start + 2 * page_size, page_size); + remap = mremap(start + page_size, page_size, 2 * page_size, 0); + if (remap == MAP_FAILED) { + ksft_print_msg("mremap failed: %s\n", strerror(errno)); + munmap(start, 2 * page_size); + goto out; + } + + success = is_range_mapped(maps_fp, start, start + 3 * page_size); + munmap(start, 3 * page_size); + +out: if (success) ksft_test_result_pass("%s\n", test_name); else ksft_test_result_fail("%s\n", test_name); - fclose(fp); } /* @@ -385,6 +447,7 @@ int main(int argc, char **argv) struct test perf_test_cases[MAX_PERF_TEST]; int page_size; time_t t; + FILE *maps_fp; pattern_seed = (unsigned int) time(&t); @@ -458,7 +521,17 @@ int main(int argc, char **argv) run_mremap_test_case(test_cases[i], &failures, threshold_mb, pattern_seed); - mremap_expand_merge(page_size); + maps_fp = fopen("/proc/self/maps", "r"); + + if (maps_fp == NULL) { + ksft_print_msg("Failed to read /proc/self/maps: %s\n", strerror(errno)); + exit(KSFT_FAIL); + } + + mremap_expand_merge(maps_fp, page_size); + mremap_expand_merge_offset(maps_fp, page_size); + + fclose(maps_fp); if (run_perf_tests) { ksft_print_msg("\n%s\n", -- 2.39.0

2 years, 9 months

2
1
0 0

[PATCH v3] selftest/vm: add mremap expand merge offset test

by Lorenzo Stoakes

Add a test to assert that we can mremap() and expand a mapping starting from an offset within an existing mapping. We unmap the last page in a 3 page mapping to ensure that the remap should always succeed, before remapping from the 2nd page. This is additionally a regression test for the issue solved in "mm, mremap: fix mremap() expanding vma with addr inside vma" and confirmed to fail prior to the change and pass after it. Finally, this patch updates the existing mremap expand merge test to check error conditions and reduce code duplication between the two tests. Signed-off-by: Lorenzo Stoakes <lstoakes(a)gmail.com> --- tools/testing/selftests/vm/mremap_test.c | 116 ++++++++++++++++++----- 1 file changed, 94 insertions(+), 22 deletions(-) diff --git a/tools/testing/selftests/vm/mremap_test.c b/tools/testing/selftests/vm/mremap_test.c index 9496346973d4..b8e427b2538c 100644 --- a/tools/testing/selftests/vm/mremap_test.c +++ b/tools/testing/selftests/vm/mremap_test.c @@ -119,47 +119,109 @@ static unsigned long long get_mmap_min_addr(void) } /* - * This test validates that merge is called when expanding a mapping. - * Mapping containing three pages is created, middle page is unmapped - * and then the mapping containing the first page is expanded so that - * it fills the created hole. The two parts should merge creating - * single mapping with three pages. + * Using /proc/self/maps, assert that the specified address range is contained + * within a single mapping. */ -static void mremap_expand_merge(unsigned long page_size) +static bool is_range_mapped(FILE *maps_fp, void *start, void *end) { - char *test_name = "mremap expand merge"; - FILE *fp; char *line = NULL; size_t len = 0; bool success = false; - char *start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - - munmap(start + page_size, page_size); - mremap(start, page_size, 2 * page_size, 0); - fp = fopen("/proc/self/maps", "r"); - if (fp == NULL) { - ksft_test_result_fail("%s\n", test_name); - return; - } + rewind(maps_fp); - while (getline(&line, &len, fp) != -1) { + while (getline(&line, &len, maps_fp) != -1) { char *first = strtok(line, "- "); void *first_val = (void *)strtol(first, NULL, 16); char *second = strtok(NULL, "- "); void *second_val = (void *) strtol(second, NULL, 16); - if (first_val == start && second_val == start + 3 * page_size) { + if (first_val <= start && second_val >= end) { success = true; break; } } + + return success; +} + +/* + * This test validates that merge is called when expanding a mapping. + * Mapping containing three pages is created, middle page is unmapped + * and then the mapping containing the first page is expanded so that + * it fills the created hole. The two parts should merge creating + * single mapping with three pages. + */ +static void mremap_expand_merge(FILE *maps_fp, unsigned long page_size) +{ + char *test_name = "mremap expand merge"; + bool success = false; + char *remap, *start; + + start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (start == MAP_FAILED) { + ksft_print_msg("mmap failed: %s\n", strerror(errno)); + goto out; + } + + munmap(start + page_size, page_size); + remap = mremap(start, page_size, 2 * page_size, 0); + if (remap == MAP_FAILED) { + ksft_print_msg("mremap failed: %s\n", strerror(errno)); + munmap(start, page_size); + munmap(start + 2 * page_size, page_size); + goto out; + } + + success = is_range_mapped(maps_fp, start, start + 3 * page_size); + munmap(start, 3 * page_size); + +out: + if (success) + ksft_test_result_pass("%s\n", test_name); + else + ksft_test_result_fail("%s\n", test_name); +} + +/* + * Similar to mremap_expand_merge() except instead of removing the middle page, + * we remove the last then attempt to remap offset from the second page. This + * should result in the mapping being restored to its former state. + */ +static void mremap_expand_merge_offset(FILE *maps_fp, unsigned long page_size) +{ + + char *test_name = "mremap expand merge offset"; + bool success = false; + char *remap, *start; + + start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (start == MAP_FAILED) { + ksft_print_msg("mmap failed: %s\n", strerror(errno)); + goto out; + } + + /* Unmap final page to ensure we have space to expand. */ + munmap(start + 2 * page_size, page_size); + remap = mremap(start + page_size, page_size, 2 * page_size, 0); + if (remap == MAP_FAILED) { + ksft_print_msg("mremap failed: %s\n", strerror(errno)); + munmap(start, 2 * page_size); + goto out; + } + + success = is_range_mapped(maps_fp, start, start + 3 * page_size); + munmap(start, 3 * page_size); + +out: if (success) ksft_test_result_pass("%s\n", test_name); else ksft_test_result_fail("%s\n", test_name); - fclose(fp); } /* @@ -385,6 +447,7 @@ int main(int argc, char **argv) struct test perf_test_cases[MAX_PERF_TEST]; int page_size; time_t t; + FILE *maps_fp; pattern_seed = (unsigned int) time(&t); @@ -458,7 +521,16 @@ int main(int argc, char **argv) run_mremap_test_case(test_cases[i], &failures, threshold_mb, pattern_seed); - mremap_expand_merge(page_size); + maps_fp = fopen("/proc/self/maps", "r"); + if (maps_fp == NULL) { + ksft_print_msg("Failed to read /proc/self/maps: %s\n", strerror(errno)); + exit(KSFT_FAIL); + } else { + mremap_expand_merge(maps_fp, page_size); + mremap_expand_merge_offset(maps_fp, page_size); + + fclose(maps_fp); + } if (run_perf_tests) { ksft_print_msg("\n%s\n", -- 2.39.0

2 years, 9 months

2
6
0 0

[PATCH v2] selftest/vm: add mremap expand merge offset test

by Lorenzo Stoakes

Add a test to assert that we can mremap() and expand a mapping starting from an offset within an existing mapping. We unmap the last page in a 3 page mapping to ensure that the remap should always succeed, before remapping from the 2nd page. This is additionally a regression test for the issue solved in "mm, mremap: fix mremap() expanding vma with addr inside vma" and confirmed to fail prior to the change and pass after it. Finally, this patch updates the existing mremap expand merge test to check error conditions and reduce code duplication between the two tests. Signed-off-by: Lorenzo Stoakes <lstoakes(a)gmail.com> --- tools/testing/selftests/vm/mremap_test.c | 115 ++++++++++++++++++----- 1 file changed, 93 insertions(+), 22 deletions(-) diff --git a/tools/testing/selftests/vm/mremap_test.c b/tools/testing/selftests/vm/mremap_test.c index 9496346973d4..8946283b0ba5 100644 --- a/tools/testing/selftests/vm/mremap_test.c +++ b/tools/testing/selftests/vm/mremap_test.c @@ -119,47 +119,109 @@ static unsigned long long get_mmap_min_addr(void) } /* - * This test validates that merge is called when expanding a mapping. - * Mapping containing three pages is created, middle page is unmapped - * and then the mapping containing the first page is expanded so that - * it fills the created hole. The two parts should merge creating - * single mapping with three pages. + * Using /proc/self/maps, assert that the specified address range is contained + * within a single mapping. */ -static void mremap_expand_merge(unsigned long page_size) +static bool is_range_mapped(FILE *maps_fp, void *start, void *end) { - char *test_name = "mremap expand merge"; - FILE *fp; char *line = NULL; size_t len = 0; bool success = false; - char *start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - - munmap(start + page_size, page_size); - mremap(start, page_size, 2 * page_size, 0); - fp = fopen("/proc/self/maps", "r"); - if (fp == NULL) { - ksft_test_result_fail("%s\n", test_name); - return; - } + rewind(maps_fp); - while (getline(&line, &len, fp) != -1) { + while (getline(&line, &len, maps_fp) != -1) { char *first = strtok(line, "- "); void *first_val = (void *)strtol(first, NULL, 16); char *second = strtok(NULL, "- "); void *second_val = (void *) strtol(second, NULL, 16); - if (first_val == start && second_val == start + 3 * page_size) { + if (first_val <= start && second_val >= end) { success = true; break; } } + + return success; +} + +/* + * This test validates that merge is called when expanding a mapping. + * Mapping containing three pages is created, middle page is unmapped + * and then the mapping containing the first page is expanded so that + * it fills the created hole. The two parts should merge creating + * single mapping with three pages. + */ +static void mremap_expand_merge(FILE *maps_fp, unsigned long page_size) +{ + char *test_name = "mremap expand merge"; + bool success = false; + char *remap, *start; + + start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (start == MAP_FAILED) { + ksft_print_msg("mmap failed: %s\n", strerror(errno)); + goto out; + } + + munmap(start + page_size, page_size); + remap = mremap(start, page_size, 2 * page_size, 0); + if (remap == MAP_FAILED) { + ksft_print_msg("mremap failed: %s\n", strerror(errno)); + munmap(start, page_size); + munmap(start + 2 * page_size, page_size); + goto out; + } + + success = is_range_mapped(maps_fp, start, start + 3 * page_size); + munmap(start, 3 * page_size); + +out: + if (success) + ksft_test_result_pass("%s\n", test_name); + else + ksft_test_result_fail("%s\n", test_name); +} + +/* + * Similar to mremap_expand_merge() except instead of removing the middle page, + * we remove the last then attempt to remap offset from the second page. This + * should result in the mapping being restored to its former state. + */ +static void mremap_expand_merge_offset(FILE *maps_fp, unsigned long page_size) +{ + + char *test_name = "mremap expand merge offset"; + bool success = false; + char *remap, *start; + + start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (start == MAP_FAILED) { + ksft_print_msg("mmap failed: %s\n", strerror(errno)); + goto out; + } + + /* Unmap final page to ensure we have space to expand. */ + munmap(start + 2 * page_size, page_size); + remap = mremap(start + page_size, page_size, 2 * page_size, 0); + if (remap == MAP_FAILED) { + ksft_print_msg("mremap failed: %s\n", strerror(errno)); + munmap(start, 2 * page_size); + goto out; + } + + success = is_range_mapped(maps_fp, start, start + 3 * page_size); + munmap(start, 3 * page_size); + +out: if (success) ksft_test_result_pass("%s\n", test_name); else ksft_test_result_fail("%s\n", test_name); - fclose(fp); } /* @@ -385,6 +447,7 @@ int main(int argc, char **argv) struct test perf_test_cases[MAX_PERF_TEST]; int page_size; time_t t; + FILE *maps_fp; pattern_seed = (unsigned int) time(&t); @@ -458,7 +521,15 @@ int main(int argc, char **argv) run_mremap_test_case(test_cases[i], &failures, threshold_mb, pattern_seed); - mremap_expand_merge(page_size); + maps_fp = fopen("/proc/self/maps", "r"); + if (maps_fp == NULL) { + ksft_print_msg("Failed to read /proc/self/maps: %s\n", strerror(errno)); + } else { + mremap_expand_merge(maps_fp, page_size); + mremap_expand_merge_offset(maps_fp, page_size); + + fclose(maps_fp); + } if (run_perf_tests) { ksft_print_msg("\n%s\n", -- 2.39.0

2 years, 9 months

2
3
0 0

[PATCH] selftest/vm: add mremap expand merge offset test

by Lorenzo Stoakes

Add a test to assert that we can mremap() and expand a mapping starting from an offset within an existing mapping. We unmap the last page in a 3 page mapping to ensure that the remap should always succeed, before remapping from the 2nd page. This is additionally a regression test for the issue solved in "mm, mremap: fix mremap() expanding vma with addr inside vma" and confirmed to fail prior to the change and pass after it. Finally, this patch updates the existing mremap expand merge test to check error conditions and reduce code duplication between the two tests. Signed-off-by: Lorenzo Stoakes <lstoakes(a)gmail.com> --- tools/testing/selftests/vm/mremap_test.c | 111 +++++++++++++++++++---- 1 file changed, 93 insertions(+), 18 deletions(-) diff --git a/tools/testing/selftests/vm/mremap_test.c b/tools/testing/selftests/vm/mremap_test.c index 9496346973d4..28a17d4e8afd 100644 --- a/tools/testing/selftests/vm/mremap_test.c +++ b/tools/testing/selftests/vm/mremap_test.c @@ -119,30 +119,19 @@ static unsigned long long get_mmap_min_addr(void) } /* - * This test validates that merge is called when expanding a mapping. - * Mapping containing three pages is created, middle page is unmapped - * and then the mapping containing the first page is expanded so that - * it fills the created hole. The two parts should merge creating - * single mapping with three pages. + * Using /proc/self/maps, assert that the specified address range is contained + * within a single mapping. */ -static void mremap_expand_merge(unsigned long page_size) +static bool is_range_mapped(void *start, void *end) { - char *test_name = "mremap expand merge"; FILE *fp; char *line = NULL; size_t len = 0; bool success = false; - char *start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - - munmap(start + page_size, page_size); - mremap(start, page_size, 2 * page_size, 0); fp = fopen("/proc/self/maps", "r"); - if (fp == NULL) { - ksft_test_result_fail("%s\n", test_name); - return; - } + if (fp == NULL) + return false; while (getline(&line, &len, fp) != -1) { char *first = strtok(line, "- "); @@ -150,16 +139,101 @@ static void mremap_expand_merge(unsigned long page_size) char *second = strtok(NULL, "- "); void *second_val = (void *) strtol(second, NULL, 16); - if (first_val == start && second_val == start + 3 * page_size) { + if (first_val <= start && second_val >= end) { success = true; break; } } + + fclose(fp); + return success; +} + +/* + * This test validates that merge is called when expanding a mapping. + * Mapping containing three pages is created, middle page is unmapped + * and then the mapping containing the first page is expanded so that + * it fills the created hole. The two parts should merge creating + * single mapping with three pages. + */ +static void mremap_expand_merge(unsigned long page_size) +{ + char *test_name = "mremap expand merge"; + bool success = false; + int errsv = 0; + char *remap; + char *start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (start == MAP_FAILED) { + errsv = errno; + goto error; + } + + munmap(start + page_size, page_size); + remap = mremap(start, page_size, 2 * page_size, 0); + if (remap == MAP_FAILED) { + errsv = errno; + munmap(start, page_size); + munmap(start + 2 * page_size, page_size); + goto error; + } + + success = is_range_mapped(start, start + 3 * page_size); + + munmap(start, 3 * page_size); + goto out; + +error: + ksft_print_msg("Unexpected mapping/remapping error: %s\n", + strerror(errsv)); +out: + if (success) + ksft_test_result_pass("%s\n", test_name); + else + ksft_test_result_fail("%s\n", test_name); +} + +/* + * Similar to mremap_expand_merge() except instead of removing the middle page, + * we remove the last then attempt to remap offset from the second page. This + * should result in the mapping being restored to its former state. + */ +static void mremap_expand_merge_offset(unsigned long page_size) +{ + + char *test_name = "mremap expand merge offset"; + bool success = false; + int errsv = 0; + char *remap; + char *start = mmap(NULL, 3 * page_size, PROT_READ | PROT_WRITE, + MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); + + if (start == MAP_FAILED) { + errsv = errno; + goto error; + } + + /* Unmap final page to ensure we have space to expand. */ + munmap(start + 2 * page_size, page_size); + remap = mremap(start + page_size, page_size, 2 * page_size, 0); + if (remap == MAP_FAILED) { + errsv = errno; + munmap(start, 2 * page_size); + goto error; + } + + success = is_range_mapped(start, start + 3 * page_size); + goto out; + +error: + ksft_print_msg("Unexpected mapping/remapping error: %s\n", + strerror(errsv)); +out: if (success) ksft_test_result_pass("%s\n", test_name); else ksft_test_result_fail("%s\n", test_name); - fclose(fp); } /* @@ -459,6 +533,7 @@ int main(int argc, char **argv) pattern_seed); mremap_expand_merge(page_size); + mremap_expand_merge_offset(page_size); if (run_perf_tests) { ksft_print_msg("\n%s\n", -- 2.38.1

2 years, 9 months

2
2
0 0

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