------------[ cut here ]------------
WARNING: CPU: 1 PID: 4432 at fs/buffer.c:1081 mark_buffer_dirty+0x328/0x5c0 fs/buffer.c:1081
Modules linked in:
CPU: 1 PID: 4432 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026
pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : mark_buffer_dirty+0x328/0x5c0 fs/buffer.c:1081
lr : mark_buffer_dirty+0x328/0x5c0 fs/buffer.c:1081
sp : ffff800021037920
x29: ffff800021037920 x28: ffff0000c469d200 x27: ffff0000c469d200
x26: dfff800000000000 x25: 0000000000000002 x24: 0000000000000001
x23: 1fffe0001babd8cf x22: dfff800000000000 x21: ffff0000d1545a48
x20: 0000000000000418 x19: ffff0000c0635488 x18: 1fffe00033e6db7e
x17: ffff8000153bd000 x16: ffff8000082dbd78 x15: 0000000000000000
x14: 0000000000000001 x13: 1fffe000180c6a91 x12: 0000000000000000
x11: ff00800008a9ffe8 x10: 0000000000000000 x9 : ffff800008a9ffe8
x8 : ffff0000cfc91c00 x7 : ffff80000a61e654 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008a9fcf0
x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 mark_buffer_dirty+0x328/0x5c0 fs/buffer.c:1081
 minix_put_super+0x118/0x394 fs/minix/inode.c:49
 generic_shutdown_super+0x138/0x32c fs/super.c:501
 kill_block_super+0x78/0xe0 fs/super.c:1481
 deactivate_locked_super+0xb4/0x128 fs/super.c:332
 deactivate_super+0xe4/0x104 fs/super.c:363
 cleanup_mnt+0x3a8/0x430 fs/namespace.c:1191
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1198
 task_work_run+0x1f4/0x280 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x20f8/0x2c84 arch/arm64/kernel/signal.c:1151
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x98/0x128 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 242002
hardirqs last  enabled at (242001): [<ffff8000083614c0>] call_rcu+0x5d8/0x958 kernel/rcu/tree.c:2884
hardirqs last disabled at (242002): [<ffff800011bb2834>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (241900): [<ffff800008031254>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (241898): [<ffff800008031220>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---