syzbot suspects this issue was fixed by commit: commit 6f861765464f43a71462d52026fbddfc858239a5 Author: Jan Kara <jack@xxxxxxx> Date: Wed Nov 1 17:43:10 2023 +0000 fs: Block writes to mounted block devices bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16fbb3dc180000 start commit: f5837722ffec Merge tag 'mm-hotfixes-stable-2023-12-27-15-0.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=da1c95d4e55dda83 dashboard link: https://syzkaller.appspot.com/bug?extid=63cebbb27f598a7f901b syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1230c7e9e80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=133d189ae80000 If the result looks correct, please mark the issue as fixed by replying with: #syz fix: fs: Block writes to mounted block devices For information about bisection process see: https://goo.gl/tpsmEJ#bisection