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[2a03:2880:31ff:74::face:b00c]) by smtp.gmail.com with ESMTPSA id u7-20020a1709067d0700b00a26b057df46sm1084391ejo.126.2024.01.05.09.40.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Jan 2024 09:40:43 -0800 (PST) Date: Fri, 5 Jan 2024 09:40:41 -0800 From: Breno Leitao To: Andrew Morton Cc: riel@surriel.com, linux-mm@kvack.org, vegard.nossum@oracle.com, rppt@kernel.org, songmuchun@bytedance.com, shy828301@gmail.com, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/1] selftest/mm/hugetlb: SIGBUS on stolen page Message-ID: References: <20240105155419.1939484-1-leitao@debian.org> <20240105084238.306269c3f3a63cb0fd130baa@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240105084238.306269c3f3a63cb0fd130baa@linux-foundation.org> X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: F3BB9A001A X-Stat-Signature: ut681g3stceor3ttfhkg1waerwm95hi5 X-Rspam-User: X-HE-Tag: 1704476444-818567 X-HE-Meta: U2FsdGVkX1++FxX6mGp67jd1V+iEdTEqLpftDfpGz2enlDjCn34U15QYdJQLeK0OdzhPuPZ1MYrf0POlpnLvNwGFRHapIT3iiwTrP41WbwEfQCHuVGeE6vwnSBdk7W6akVQSvGope8gLP8mrv8vz2dyjK/tis6n1R/V8xkuKKzXEG6zdMsVbGUsh50WEVDdYzMOL3kVVc/QzQQHNPVRupCOaYd5Qbo5hO0I08YKN3I69xM/lsNQNZx4r9ggdqAOZ6uFSVlZXsksGpsUNLEfPyL+4evyUKz//dn2f6YdWapEvv0FngikVPbW18a2ru+3wPSyzpEiQASYyuVJFUYH4R+R1/d1StknYs2/dflkQqZMBxOk0FUURLdaVGjAtqydwX02+rlqr4dXuo6DKseworJeq4soVxeQDVIdEOWxQ03MnxsXg9b+kIXoHQvjVM76ZNWO026j4LOFCqWwzBfGirE/V8AFxF6ILtRLYgMihaiUL5+22sv4OHXCxVXvPF5sBxRwvlXwKHou3oDwNehyJgpkDiAUFQ6kXGGG2xxl/4qTm5ojoggQfRUd7AWq6AKG/tlPqBNxwwdJE80EYA3VbvFV/8yJNY8lHR2HjiPsXbIqpBDe7TN1wweu+u+t5+ygLjOxai45NWAbLiWp7aacQ1FeXgi6IDttkI6B7EKAWs0W2VIerGiQQ62rMe2UNPVRm4h2/ZdONqC4xcluvHXCIJ4q8VPhQYyAJwiC69WzLXk6fu/FZEih8qyb8OT+0F/C3dkK05J890dTHZpliybiX5FCIcvwtGjkAAT2lCxK0HH3joMoSw367ywopeNWuLMv+j/lebctdv7+DgrxG+lQdXuSLzjA8ZUOhdgXrkQkqcyDK6ic58aMy3sy9IxpecaxC0eouPouv4DYr7m3FSdDBXortuX4RQgyEDntjb1pWyJ24sy5bcVr+UdPP/HANQ8vgmZmzoWHNpgsyVzsiRow SxQLoxXR bzSxsMKORDJDmCAZsZ77lZgCbHoTnZTo7oTbdYjmzfQiuLoUXjUj3C+Fd+AvO5SSYUbhXorKqakNH/x4/Byk++uwdQpl1rUdcK+jZzzVzs1PLr9Yixa+3wiH0HBqakNo0BMNAalFEBkvT0YyLeacKfUEYBKs45EYypM+eRSgFIGrR0EFidrlLsD/dqwwwjxITOPDBNwGMeRD8CpOyWqeONLr2HY/NOfD9MbLbzr/47x2y1RgAqcndIWHQ3zr5J++YAh2V6aYu9HFcHDMg/29rOL+UxvZNcmlfM8ei/SPF515Y4Ghkhy3iTkfJRxq2YkwxNhpIAWdjucvpK1B3wYSnuOZW25uTpaxIDOmQ5oUtgFmuBObhu4t+l2CwK31UAX0QAhvX9MyIi7MwVAd68kzv+gPdkKgzFSHxn8SA7u4DqA4cQFK00SUQsvWcftTftsSYEXaa X-Bogosity: Ham, tests=bogofilter, spamicity=0.000006, 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 Fri, Jan 05, 2024 at 08:42:38AM -0800, Andrew Morton wrote: > On Fri, 5 Jan 2024 07:54:18 -0800 Breno Leitao wrote: > > > This test case triggers a race between madvise(MADV_DONTNEED) and > > mmap() in a single huge page, which got stolen (while reserved). > > > > Once the only page is stolen, the memory previously mmaped (and > > madvise(MADV_DONTNEED) got a SIGBUS when accessed. > > > > I am not adding this test to the un_vmtests.sh scripts, since this test > > fails at upstream. > > Oh. Is a fix for this in the pipeline? If so, I assume that once the > fix is merged, we enable this test in run_vmtests? The fix is not ready yet. As soon as the fix lands, I will enable the test in run_vmtests.