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Message-ID: <683da0ca.a00a0220.d8eae.0051.GAE@google.com>
Date: Mon, 02 Jun 2025 06:02:02 -0700
From: syzbot <syzbot+cbc79a37b5fa23efd23b@...kaller.appspotmail.com>
To: agordeev@...ux.ibm.com, boqun.feng@...il.com, guoweikang.kernel@...il.com,
hdanton@...a.com, kent.overstreet@...ux.dev, kpsingh@...nel.org,
linux-bcachefs@...r.kernel.org, linux-kernel@...r.kernel.org,
paulmck@...nel.org, pmladek@...e.com, rppt@...nel.org, rrangel@...omium.org,
syzkaller-bugs@...glegroups.com, urezki@...il.com
Subject: Re: [syzbot] [bcachefs?] possible deadlock in start_poll_synchronize_rcu_expedited
syzbot has bisected this issue to:
commit 82067c916994dd1bfec65496144dc16e17899e36
Author: Kent Overstreet <kent.overstreet@...ux.dev>
Date: Fri May 9 03:21:28 2025 +0000
bcachefs: buckets_in_flight on stack
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12fc7970580000
start commit: 3a83b350b5be Add linux-next specific files for 20250530
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=11fc7970580000
console output: https://syzkaller.appspot.com/x/log.txt?x=16fc7970580000
kernel config: https://syzkaller.appspot.com/x/.config?x=28859360c84ac63d
dashboard link: https://syzkaller.appspot.com/bug?extid=cbc79a37b5fa23efd23b
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=106ebed4580000
Reported-by: syzbot+cbc79a37b5fa23efd23b@...kaller.appspotmail.com
Fixes: 82067c916994 ("bcachefs: buckets_in_flight on stack")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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