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Wed, 22 Jan 2025 21:06:01 -0800 (PST) Date: Wed, 22 Jan 2025 21:06:01 -0800 In-Reply-To: <67432dee.050a0220.1cc393.0041.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6791ce39.050a0220.194594.0020.GAE@google.com> Subject: Re: [syzbot] [btrfs?] kernel BUG in __folio_start_writeback From: syzbot To: akpm@linux-foundation.org, clm@fb.com, dsterba@suse.com, fdmanana@kernel.org, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, nogikh@google.com, peterz@infradead.org, quwenruo.btrfs@gmx.com, syzkaller-bugs@googlegroups.com, willy@infradead.org, wqu@suse.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 82D8740011 X-Stat-Signature: rmrmbdwywhqwykr6gpghb7hdhb7i3w87 X-Rspamd-Server: rspam08 X-Rspam-User: X-HE-Tag: 1737608762-121249 X-HE-Meta: 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 ySD9Wyfe Nvxrs+vWVhJbO7elk4uVRrgB7v3FAprwcSVNOP46uIQrF2z0xW739UGmOX2TYT8SB3vl6zqak5qiFhFS6z83uCQbBCJ1PjnVeqRpL4zQ7gHojHDc7Mnc+FAFefToxldRMpTZ6toTFq6C+PI1AAXVvUeEUKmk1BjvGaUayK28vS3F658puJRE1fmUxoZvzjAmmPbbdJA9joG5fhJ93sEc3D+WZE9u4/U0EBnASRwYRtTXwtMwhMlmSdmtoBV4T6poBFToPO4XbKT/qDtdsdsXg9+K2oRN+wjDmy8uXrDheePfYIAC6X/RuemsTrVGo6wH2531MWcmfWfOG4oF5YLN8T20Fz0IF2Hrh7X2I6aEqw2uihsj28A6uR8xAOXzzhfpIBG441WPVlCy+LcjeuqYI9bQKLyqYrOMmHntmeqSff7y9Ac+VSrB1uoh2ToRzHTLPUbAdqo0dKdZGjwmHwYc6CWiNjU1lgcPkG3yVBpb1lsDIjyYsjTZUCb9I06Jshi/AXsc/AJgocFRk7OixYFkBe1/1Huhk7c2SjDuoHjpIKp/r6Sp98CaXbbEMF11gcIJslQKPtLP4T1MoNeVoHWTnVBthZWPd+HucusCHm6XnwU2RyUfFXI4DTth3ON7HBhXduTPp9kAh/4QovE2JHpT5KlaKenvjDadefB7HAa7R7Q5ehqckrlkl7G2nx/FDJXLxjSzYEdq8lw+9n9kZtVXJZOP4wX/luM4zSJU1TBP9tWg1Qx82QTbnsnIZOPPrjGqcym6l0W+P5sueC/68v01TdZb0erav1Z6+ZKcq3U2RRkuL0cMzFKEGxRJ12EB3Z9ZeJvAzmWoYVTYQwqx0Vw3zWbCC5bI6VwU/1PZpzpo6SqmTIGk3J5VnvAzNRB3H03/OWPhmbnP+mOdNhpL5JM+9iXBvMDf4ltdWoCMKg77Yb2Z1cCk36G4yCKjEhWyilH++6C+ohGEHFGy9hXpyejHjhFnGkOJo yqZReuRF IhWnADH+a7D/hU2ZEeH0fKfc58/KRxE8LFKNejuXHMnwAfFpatrAaKJTGCQyteKBZmnk4X7oL2fDWMUxgLTD1J96xAakNuZe+fcvVs/OTyq8mMZkqIBhAncTj4I5T1hGPqjeXO2PUgKIdLc/BIg1lw== 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: syzbot suspects this issue was fixed by commit: commit 66951e4860d3c688bfa550ea4a19635b57e00eca Author: Peter Zijlstra Date: Mon Jan 13 12:50:11 2025 +0000 sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11c129f8580000 start commit: 228a1157fb9f Merge tag '6.13-rc-part1-SMB3-client-fixes' o.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=402159daa216c89d dashboard link: https://syzkaller.appspot.com/bug?extid=aac7bff85be224de5156 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13840778580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17840778580000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: sched/fair: Fix update_cfs_group() vs DELAY_DEQUEUE For information about bisection process see: https://goo.gl/tpsmEJ#bisection