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=152ff3f2180000 start commit: 421ca22e3138 Merge tag 'nfs-for-6.4-2' of git://git.linux-.. git tree: upstream kernel config: https://syzkaller.appspot.com/x/.config?x=7d8067683055e3f5 dashboard link: https://syzkaller.appspot.com/bug?extid=0a684c061589dcc30e51 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14312791280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12da8605280000 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