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[175.177.40.153]) by smtp.gmail.com with ESMTPSA id t9sm902704pgg.6.2021.04.26.23.30.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Apr 2021 23:30:03 -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 v4 0/2] mm,hwpoison: fix sending SIGBUS for Action Required MCE Date: Tue, 27 Apr 2021 15:29:51 +0900 Message-Id: <20210427062953.2080293-1-nao.horiguchi@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I updated the series based on Boris's review. I folded 2/3 and 3/3 into one patch, updated description, added some refactored and rebased onto v5.12. There's no essential change in how the problem is solved. 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/ v3: https://lore.kernel.org/linux-mm/20210421005728.1994268-1-nao.horiguchi@gmail.com/ 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/ --- Summary: Naoya Horiguchi (1): mm,hwpoison: send SIGBUS when the page has already been poisoned 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 | 180 +++++++++++++++++++++++++++++++++++++---- 3 files changed, 182 insertions(+), 16 deletions(-)