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Mon, 26 Oct 2026 17:17:04 -0700 (PDT) Date: Mon, 26 Oct 2026 17:17:04 -0700 In-Reply-To: <6ad78978.b5bd089a.6b57.008d.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6adfed80.6200f071.51519.0efd.GAE@google.com> Subject: Re: [syzbot] [block?] possible deadlock in blkdev_buffered_write From: syzbot To: axboe@kernel.dk, bvanassche@acm.org, hch@lst.de, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, mzx199711@gmail.com, sunjunchao@bytedance.com, syzkaller-bugs@googlegroups.com, tz2294@columbia.edu Content-Type: text/plain; charset="UTF-8" syzbot has bisected this issue to: commit 1b1be9ea4e34ccede1e7cf9ff2b6317328a5b6ad Author: Julian Sun Date: Thu Oct 15 09:11:05 2026 +0000 block: take the inode lock for buffered write fallback bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=165121e1580000 start commit: 21a7f44fd076 Merge tag 'devicetree-for-7.4' of git://git.k.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=155121e1580000 console output: https://syzkaller.appspot.com/x/log.txt?x=115121e1580000 kernel config: https://syzkaller.appspot.com/x/.config?x=cb217ea80b9f9fe dashboard link: https://syzkaller.appspot.com/bug?extid=bd975ef54294bec73f0e syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1634b469580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=108dd695580000 Reported-by: syzbot+bd975ef54294bec73f0e@syzkaller.appspotmail.com Fixes: 1b1be9ea4e34 ("block: take the inode lock for buffered write fallback") For information about bisection process see: https://goo.gl/tpsmEJ#bisection