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Remove duplicate inclusion of unistd.h in memory-failure.c to clean up
redundant code.
Link: https://lkml.kernel.org/r/20260211064311.2981726-1-nichen@iscas.ac.cn
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Dev Jain <dev.jain@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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This patch adds a new testcase to validate memory failure handling for
dirty pagecache. This performs similar operations as clean pagecaches
except fsync() is not used to keep pages dirty.
This test helps ensure that memory failure handling for dirty pagecache
works correctly, including proper SIGBUS delivery, page isolation, and
recovery paths.
Link: https://lkml.kernel.org/r/20260206031639.2707102-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: kernel test robot <lkp@intel.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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This patch adds a new testcase to validate memory failure handling for
clean pagecache. This test performs similar operations as anonymous pages
except allocating memory using mmap() with a file fd.
This test helps ensure that memory failure handling for clean pagecache
works correctly, including unchanged page content, page isolation, and
recovery paths.
Link: https://lkml.kernel.org/r/20260206031639.2707102-3-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202601221142.mDWA1ucw-lkp@intel.com/
Cc: David Hildenbrand <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Patch series "selftests/mm: add memory failure selftests", v4.
Introduce selftests to validate the functionality of memory failure.
These tests help ensure that memory failure handling for anonymous pages,
pagecaches pages works correctly, including proper SIGBUS delivery to user
processes, page isolation, and recovery paths.
Currently madvise syscall is used to inject memory failures. And only
anonymous pages and pagecaches are tested. More test scenarios, e.g.
hugetlb, shmem, thp, will be added. Also more memory failure injecting
methods will be supported, e.g. APEI Error INJection, if required.
This patch (of 3):
This patch adds a new kselftest to validate memory failure handling for
anonymous pages. The test performs the following operations:
1. Allocates anonymous pages using mmap().
2. Injects memory failure via madvise syscall.
3. Verifies expected error handling behavior.
4. Unpoison memory.
This test helps ensure that memory failure handling for anonymous pages
works correctly, including proper SIGBUS delivery to user processes, page
isolation and recovery paths.
Link: https://lkml.kernel.org/r/20260206031639.2707102-1-linmiaohe@huawei.com
Link: https://lkml.kernel.org/r/20260206031639.2707102-2-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: David Hildenbrand <david@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: kernel test robot <lkp@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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