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Tue, 07 Jan 2025 15:18:02 -0800 (PST) Date: Tue, 07 Jan 2025 15:18:02 -0800 In-Reply-To: <6730d6bd.050a0220.1fb99c.0139.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <677db62a.050a0220.a40f5.0026.GAE@google.com> Subject: Re: [syzbot] [mm?] INFO: rcu detected stall in sys_pipe2 (2) From: syzbot To: akpm@linux-foundation.org, bigeasy@linutronix.de, edumazet@google.com, kerneljasonxing@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, netdev@vger.kernel.org, pabeni@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: A41E140010 X-Stat-Signature: 6ji1us7b4cb7yiedg7w7xxnb3nisuf9n X-Rspam-User: X-HE-Tag: 1736291883-331911 X-HE-Meta: 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 AiKYh8uj 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 DFsSHAI7 30EcGiydfX2sbN8vS5DcCgUFa2lHb0UDNumW9T4YdV/f+B/i6tqMK7BrMMnLjBtI33IdDzcZb6PpzfexZZSwsdw5zw736NCJBG0BT9kluKbtyHxMyy9/l9ijaFA/IajMEkSzcoQ1tJk= 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=1668e4b0580000 start commit: 9268abe611b0 Merge branch 'net-lan969x-add-rgmii-support' git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=1168e4b0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=b087c24b921cdc16 dashboard link: https://syzkaller.appspot.com/bug?extid=693a483dd6ac06c62b09 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16e7c2f8580000 Reported-by: syzbot+693a483dd6ac06c62b09@syzkaller.appspotmail.com Fixes: d15121be7485 ("Revert "softirq: Let ksoftirqd do its job"") For information about bisection process see: https://goo.gl/tpsmEJ#bisection