syzbot suspects this issue was fixed by commit: commit b0ad381fa7690244802aed119b478b4bdafc31dd Author: Josef Bacik <josef@xxxxxxxxxxxxxx> Date: Mon Feb 12 16:56:02 2024 +0000 btrfs: fix deadlock with fiemap and extent locking bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=101316f5180000 start commit: 7521f258ea30 Merge tag 'mm-hotfixes-stable-2024-02-10-11-1.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=89a5d896b14c4565 dashboard link: https://syzkaller.appspot.com/bug?extid=eaa05fbc7563874b7ad2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14c0d1e0180000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10aff5b8180000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: btrfs: fix deadlock with fiemap and extent locking For information about bisection process see: https://goo.gl/tpsmEJ#bisection