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Mon, 27 Jan 2025 07:31:03 -0800 (PST) Date: Mon, 27 Jan 2025 07:31:03 -0800 In-Reply-To: <67555b72.050a0220.2477f.0026.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6797a6b7.050a0220.ac840.01cd.GAE@google.com> Subject: Re: [syzbot] [mm?] INFO: rcu detected stall in sys_umount (3) From: syzbot To: andrii@kernel.org, ast@kernel.org, bigeasy@linutronix.de, bpf@vger.kernel.org, daniel@iogearbox.net, davem@davemloft.net, eddyz87@gmail.com, edumazet@google.com, haoluo@google.com, jiri@resnulli.us, john.fastabend@gmail.com, jolsa@kernel.org, kerneljasonxing@gmail.com, kpsingh@kernel.org, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, martin.lau@linux.dev, netdev@vger.kernel.org, pabeni@redhat.com, sdf@fomichev.me, song@kernel.org, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, yonghong.song@linux.dev Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 826994000C X-Stat-Signature: yu34rdx419zo3ky3gaib9yaw8f57tzx8 X-Rspam-User: X-HE-Tag: 1737991864-212034 X-HE-Meta: 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 twCraI4o H7m0WT8+iz2VFHaD266MyP7sDYpuAv5xqOhc7ZPRgt3Q6p+mMXO/9AZzebWXGyuzQRRaouFgU2myz+9xvfT4dCVbB9XKaB5onpQwG20t08atHtCGgZZ177h2bVMxPI8N/Y+eR/zMX1ikKYtU3RtQePoSv351QwsbSbBcw7Ed6hM3LVNkY/s4TUHVsoQfoEesaOlnwbgcP4P+WYekJi9w8GshE2x1SFtr6gYLa465GpOJ5VfDFhhR5kJIl0M2qiQgQDmAzn/J1AG7KD131uZy48cklUb0hhLR63TMABC//vt5c9EJbA04mkW9tbL/BFi7s8jFJrZu5ql0YfREI1IzzjnVZkbgF004BTJknkG8uMi6dKe+ca7Tl7ixgephXnMwKvoHpD59AY0b+/NXYTEpOgZL0N+1mEUuL8WvqDi7iYCdexPoGgCvLn8ThgLrp1DROXV9pp13iwGdAoH9eUu4j+gDBSm6c4GD8vmEYLCGVOYOjmmGMS7HALRLRtkF75fqARqOiDFs5TwcgG5l8XxwEG6Pd3/l2eJk/19lDuWphtpbNkkFXkhuX6kfSTJ7yIWaIg+C6BY1Hu7Odym06MjGMH/TK6GF5i1g2PDvg4oB59S0DFrqgAV7EughziiGMHtxs0T9uLb2U6izHF85AplacZWGRgNXrZ5/xOzgO5/q3Z6B9zoc98DKNRZ5ufUPd2ZwGTzbk2mNsndNwx/kvoClgH0mLTiP+VGmQsTlUJPncBg1Q/ZHYDGyKuXQhr8RnGDHqRgQ/JE48gI/tfKSaK++2m/5bcbiRISxYaW87HOr16oZhaHJrvIQvPaVHvOvqTHCruECsVDiQxxIgq0wDCxAAUBmFrLO0Vk5T9Nh17kGtb/H+WlRUnjTfv6gPMHwrTEUrg3THeiXrNxNvwqqHZDtU0nfAkKmTzN5w22Vr0+7tRRbtLxVST3KeZ0/pAYrwJud7X3a0JaE5cW1tJAnsMvfDHRvm038l 0ZVxDB6x baXFa1M3xM7QDYrnhE7uNYVrxuXljqr7RSKLqdAM407emR8EOeaQIAAsFhqfIf4THOV9GTsGvNbpjqH+TdY0GrWYeXwucA+BK4LgHchQMQ4alQXe/jSCImRtvAtwHEVeRk4ufvC2nPP/i3frKysYBMUV0pn9Wp4+Lt53CR4Oz1Uvf7uZ5Yr3TrNsr5fYgcBhWcV0KjKHJepzNi1pceuHcg== 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 has bisected this issue to: commit d15121be7485655129101f3960ae6add40204463 Author: Paolo Abeni Date: Mon May 8 06:17:44 2023 +0000 Revert "softirq: Let ksoftirqd do its job" bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1066f9f8580000 start commit: feffde684ac2 Merge tag 'for-6.13-rc1-tag' of git://git.ker.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=1266f9f8580000 console output: https://syzkaller.appspot.com/x/log.txt?x=1466f9f8580000 kernel config: https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7 dashboard link: https://syzkaller.appspot.com/bug?extid=1ec0f904ba50d06110b1 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13c060f8580000 Reported-by: syzbot+1ec0f904ba50d06110b1@syzkaller.appspotmail.com Fixes: d15121be7485 ("Revert "softirq: Let ksoftirqd do its job"") For information about bisection process see: https://goo.gl/tpsmEJ#bisection