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b=lg62Go09lt5PN6BwUrRzJfTp2ZKmCZv99fkqpYccFXk8KzAuH82zBMdPnpVc7+8gv hXS7Ki2pnq5+P6Jgpxmn1UBe7EiLF3LRDSVkq1FSD5uFkG2xpHlP5RVC31UzrgrAC2 ZwbfvM03IkQRo2YKEdSnmWvBPtVJnnlG3RsShiJk= Date: Fri, 5 Jan 2024 08:42:38 -0800 From: Andrew Morton To: Breno Leitao 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: <20240105084238.306269c3f3a63cb0fd130baa@linux-foundation.org> In-Reply-To: <20240105155419.1939484-1-leitao@debian.org> References: <20240105155419.1939484-1-leitao@debian.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 31E1E40006 X-Stat-Signature: pdagc3pjkob5rsdz9hr9o85ksjbjxt9s X-Rspam-User: X-HE-Tag: 1704472961-673731 X-HE-Meta: U2FsdGVkX191KdriL0VG2L91h5r9wu1H9HzrcrDKAKi17iFHm3N7zxPQaksHjUvv5ZoHISMtv0Th9gPG0NOWdpahtktnjdb9Y+126ajnuBfpxYQDhOG45aDQRwO9gioIitOt+9GF2BYr9HR+N4yz35631yQ5wJ7XH6OYFLkIKvNBBdgN4R5lK7chuOfP4bR48OXXuCNXbScebrPT4hDhzmMhALYr/iNfZAjLLLXa/abJi0WJhr7HR//rHr+9uCN84a0vS02ph0V7am91o+qYcrozW1KrxyVup+8Jo1ObzCm01PQnHNxy63EtayagizWmP8gLZSM9NqYnR3pDJ7g+hsKs6rXkclFzbJGa0Zk+QUcre3uR4WJSy3anlIY6LDMGWvaEI/jNEpxTdgg9rPgoSuAncqKCGW81mwsb7b/hdYG/uRp0RllUlgPqNEtLfHiuM0XaXfnAHxSWEexlhtht1rJjf1ycM+fHvvX9pTpInMVaDFBMsrOX4dkYJLZF7TZdqXIN0fkxkiUWB1dGrDApLRjra3dO46j/0wbPAE1uEVbUMH98f4eUk7Ow1UkhWLh/Wctkki5LuGN7hB9Zl/Vf2rMC6zieXfEsMwniyngtAx8pn7B/pHC2rNsitL8qskv+jKUHQbot4SC9KA2f35Qva7Fk/Ld62TDGPF9yXaT9hyIpyY8KSGwOXpFXMTRpsV0/AmEZWtqLdA0yzBxAWjBQcdVHNC8k9KVLE20cS8qJF2Aodzmx22GAJEwZs4Td1a4llPVKv+s588yThv2o+7QtVr8BScH6MMP+mp/x4JbZuNHLbOI3aTrqTNWe9Sjr9kmCQ7U6bmBQ3Vm8bsRUrkfWfZmAXxosrXQCJqLxoe2nDO1rm1vcqsWqf4/egcin/Eox0b5w1slcLydE6b2Zrb9ngTlWo0wNNdLR9I6C3FjaqIfHKI/BCFrblAyIrIhiztBAmrUHC0W8vdZbakpUic0 uDXImNni H4Lk4jc2l5kc8wuwRGzQ7//ZjIwhpmX8wIqPiwO0ivGNyrNKwYy/VaL5EYLXEMNhh1eZ6qfpiaVehUInGHJksueJzcq2lXdfByZ9slQs9sSnXyliofX30TSn8nRWXP0LdHlV7Cv4mPMqB6YJByMgzNIpt9uuc69MQjGYlte36oad6umA2WRItjTpPAv4ye0mgarhLra2SrxpAb8qL9WONogI86AVT1npJknu5P1lTOfYZfw4U1rfK5+FhG+8ORc33YDwubJI4lwyvNMDzhr4pzY86VHDyPekxlO5b 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 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?