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[175.177.40.153]) by smtp.gmail.com with ESMTPSA id e13sm178278pfi.199.2021.04.20.17.57.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Apr 2021 17:57:38 -0700 (PDT) From: Naoya Horiguchi To: linux-mm@kvack.org, Tony Luck , Aili Yao Cc: Andrew Morton , Oscar Salvador , David Hildenbrand , Borislav Petkov , Andy Lutomirski , Naoya Horiguchi , Jue Wang , linux-kernel@vger.kernel.org Subject: [PATCH v3 0/3] mm,hwpoison: fix sending SIGBUS for Action Required MCE Date: Wed, 21 Apr 2021 09:57:25 +0900 Message-Id: <20210421005728.1994268-1-nao.horiguchi@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Rspamd-Queue-Id: 4ABCF3C1 X-Stat-Signature: t1wkurtnfpopw19ef6ayptpogr78wdzd X-Rspamd-Server: rspam02 Received-SPF: none (gmail.com>: No applicable sender policy available) receiver=imf04; identity=mailfrom; envelope-from=""; helo=mail-pg1-f175.google.com; client-ip=209.85.215.175 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1618966658-158289 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000003, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Hi, I updated the series based on previous feedbacks/discussions. Changelog v2 -> v3: - 1/3 aligned returning code with "goto out" approach, - 3/3 added one Tested-by tag, - 3/3 fixed comment on kill_accessing_process(). Changelog v1 -> v2: - 3/3 fixed on initializing local variables and calculation logic of error virtual address, v1: https://lore.kernel.org/linux-mm/20210412224320.1747638-1-nao.horiguchi@gmail.com/ v2 (only 3/3 is posted): https://lore.kernel.org/linux-mm/20210419023658.GA1962954@u2004/ Thanks, Naoya Horiguchi --- quote from cover letter of v1 --- I wrote this patchset to materialize what I think is the current allowable solution mentioned by the previous discussion [1]. I simply borrowed Tony's mutex patch and Aili's return code patch, then I queued another one to find error virtual address in the best effort manner. I know that this is not a perfect solution, but should work for some typical case. [1]: https://lore.kernel.org/linux-mm/20210331192540.2141052f@alex-virtual-machine/ Tested-by: Tony Luck --- Summary: Aili Yao (1): mm,hwpoison: return -EHWPOISON when page already Naoya Horiguchi (1): mm,hwpoison: add kill_accessing_process() to find error virtual address Tony Luck (1): mm/memory-failure: Use a mutex to avoid memory_failure() races arch/x86/kernel/cpu/mce/core.c | 13 ++- include/linux/swapops.h | 5 ++ mm/memory-failure.c | 181 +++++++++++++++++++++++++++++++++++++---- 3 files changed, 183 insertions(+), 16 deletions(-)