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b=HraFFJ/xcLLuJ6o1wjBP6cPlh87ajBGgHxo1MRoTGAy4BNHUr01Z8zde9bUM+tvf7 nmnuA30z8KEgrXu6TLPQmXmrbHXNliphc6zgOhjje0A4KOCbtrpro/0IczJ6rcbYwZ bxbIP7Z4nXzoHu/r/8H35agquZuMzRJcj/JCNQaHBQMXnJpw4PFOONMPxad1nyIbbP yf8JMQhBAAcYPxL7FhHOEJQQFwtx7aca0fBm0vDNVDhYnQq4A+fM+zJNKv5hfIFrAH jvLr2s7xwE3QIUY+um05rBfxS+dwZuxbsRqlpNl50OL9Cr/YQa+H0Dqrb56PNtMYpM /nDxFpzqDGXbQ== Message-ID: <9413a995-9182-493e-a28a-6d2d3a17236b@kernel.org> Date: Fri, 9 Jan 2026 14:45:33 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/3] selftests/mm: add memory failure selftests To: Miaohe Lin , akpm@linux-foundation.org, shuah@kernel.org Cc: lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, nao.horiguchi@gmail.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org References: <20260107093710.3928374-1-linmiaohe@huawei.com> From: "David Hildenbrand (Red Hat)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: zmosxmf6ipm84nf6iyg84ej38unbcbqm X-Rspamd-Queue-Id: 0D25F1C0018 X-Rspamd-Server: rspam04 X-HE-Tag: 1767966338-842458 X-HE-Meta: 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 aNGpcOtB j2UZdQI/XKLS5tUK9hvTbUmPAqCUQ3cE/Pqy2rnNMet5ONUowkA09wol8uJ/0qf/TGyCZvRHHIHvo4bz0TiS/kWV22lVaz131sSVajzYYIkDP0prYZf1Agkg2levRx/IrOJEKLfk9dE9HAIbYI1QABwWliq3B+XvhE7W+LB7gXm0cYw895N6Abaks8A06qs5f+JTMzBNz6MEFtwMyCNqLYu22E+Q2eoJr+nBU9paqYeoeaPdcoUmTe3Ne0PX3zyT7EypkwSvuta5JetQF5l+ePZMzgqCLwYh/+suoYk6P4PFzbG2j4ztDbwKGIAf8ziLGOanm8TTzoxzylqM= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 1/7/26 10:37, Miaohe Lin wrote: > 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. 0day reports that these tests fail: # # ------------------------ # # running ./memory-failure # # ------------------------ # # TAP version 13 # # 1..6 # # # Starting 6 tests from 2 test cases. # # # RUN memory_failure.madv_hard.anon ... # # # OK memory_failure.madv_hard.anon # # ok 1 memory_failure.madv_hard.anon # # # RUN memory_failure.madv_hard.clean_pagecache ... # # # memory-failure.c:166:clean_pagecache:Expected setjmp (1) == 0 (0) # # # clean_pagecache: Test terminated by assertion # # # FAIL memory_failure.madv_hard.clean_pagecache # # not ok 2 memory_failure.madv_hard.clean_pagecache # # # RUN memory_failure.madv_hard.dirty_pagecache ... # # # memory-failure.c:207:dirty_pagecache:Expected unpoison_memory(self->pfn) (-16) == 0 (0) # # # dirty_pagecache: Test terminated by assertion # # # FAIL memory_failure.madv_hard.dirty_pagecache # # not ok 3 memory_failure.madv_hard.dirty_pagecache # # # RUN memory_failure.madv_soft.anon ... # # # OK memory_failure.madv_soft.anon # # ok 4 memory_failure.madv_soft.anon # # # RUN memory_failure.madv_soft.clean_pagecache ... # # # memory-failure.c:282:clean_pagecache:Expected variant->inject(self, addr) (-1) == 0 (0) # # # clean_pagecache: Test terminated by assertion # # # FAIL memory_failure.madv_soft.clean_pagecache # # not ok 5 memory_failure.madv_soft.clean_pagecache # # # RUN memory_failure.madv_soft.dirty_pagecache ... # # # memory-failure.c:319:dirty_pagecache:Expected variant->inject(self, addr) (-1) == 0 (0) # # # dirty_pagecache: Test terminated by assertion # # # FAIL memory_failure.madv_soft.dirty_pagecache # # not ok 6 memory_failure.madv_soft.dirty_pagecache # # # FAILED: 2 / 6 tests passed. # # # Totals: pass:2 fail:4 xfail:0 xpass:0 skip:0 error:0 # # [FAIL] # not ok 71 memory-failure # exit=1 Can the test maybe not deal with running in certain environments (config options etc)? -- Cheers David