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Thu, 26 Sep 2024 21:20:02 -0700 (PDT) Date: Thu, 26 Sep 2024 21:20:02 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <66f63272.050a0220.38ace9.0009.GAE@google.com> Subject: Re: [syzbot] [mm?] WARNING in copy_huge_pmd From: syzbot To: akpm@linux-foundation.org, bp@alien8.de, dave.hansen@linux.intel.com, david@redhat.com, hpa@zytor.com, jgg@ziepe.ca, leitao@debian.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, mingo@redhat.com, peterx@redhat.com, rppt@kernel.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Stat-Signature: o3n9go5m1qzxxjzaaahkrc5o8jmxbqwf X-Rspamd-Queue-Id: EA93A1C000E X-Rspamd-Server: rspam11 X-HE-Tag: 1727410803-870210 X-HE-Meta: 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 8xSlv9sI N3nVAs7j7MaoSm5p064SzUewRYEUzWddGBnRcz0Vd+u7DyNTiZiws//CPj8moPJ1Op41xmUaK4fiqk8lXRrywTvMGqYJ+DqAu1hz0s/00o6QR651depteVwolDEK7WFZiZpgSWRxa7WBojeJBFWBLqYdaIiCDCl058YTdV6qpke30uyvgnV/iLseWAuQEhPsdAFElhfIrqxUVs64Mhvf0FMCz1R7chuNBv/Q6wcNQXQP9d2yY31xvMib86qdSYPeX6yMwEZcm9RpAFHjESdwzyV1XDImxPNxNjdR2OxqjeaiGUDOgCTQ231ceT1n8iBVcPGVlEizJlmgIAkCOpEhjITHCDFRPQkEtgvBm9+C0gPzAVdJs3veMPkAEa3M/VUH047z8Tn/TLs6xiCQFpue8RAqj3ncn5UYtF9lbXgktUfLpWTtYnJyJOHtEPn8/X41GxUEW24bwWKLPvCX/AtyNYTmN7eNm/tqDQbgBvDxUhxjJlU6tUrIf2DrY11cvVQNmTAj6YY26Vyoqaptp5Mniriy2PEGOox9EoxQPMyuAtYHHfl3xZu2RHl7fAOO/h3EtfC7dUvGf5M6fQkMyeYrvS6ur893UyyfcLbNGKHFtDpXD/4dc87BVQ36kGiEHZvacfqJnwC0ef5KPXFu1jbxW0I72awn/nLvaXVoNCbUnOvhPk4s+BIkhzhZCh5ygHuBiucFtn6H0pliQ3jRjcG+MKC+2NoubiyQdPX/FkUjFkPvxkKb201UX59WaENq5/s85EpFwrpHjsBF4XpvT5yQSGu6hQ5cebXSWi1qfcon/ra+FkAb+ymKBde+8le/cElxoxTuiyb8vYLH0nuMUQI6IvGL5AFjvcVGc9JzSGslcbQGyzsumywSRqiV6Hfc3JbwJE2BD5/G6N7jf8BRgg3bAEZ5ptisRY2V/aRJKU/aauqnz9+vpTT3wIrukuX4Q/WhVHfMZO6LCG73ef7sXV86YsrCFCjK1 6COOroB6 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: Hello, syzbot has tested the proposed patch and the reproducer did not trigger any issue: Reported-by: syzbot+bf2c35fa302ebe3c7471@syzkaller.appspotmail.com Tested-by: syzbot+bf2c35fa302ebe3c7471@syzkaller.appspotmail.com Tested on: commit: 08768b86 mm/huge_memory: check pmd_special() only afte.. git tree: https://github.com/davidhildenbrand/linux.git copy_huge_pmd_pfn console output: https://syzkaller.appspot.com/x/log.txt?x=1087aaa9980000 kernel config: https://syzkaller.appspot.com/x/.config?x=bc30a30374b0753 dashboard link: https://syzkaller.appspot.com/bug?extid=bf2c35fa302ebe3c7471 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied. Note: testing is done by a robot and is best-effort only.