ocfs2: Unmounting device (7,4) on (node local)
VFS: Busy inodes after unmount of loop4 (ocfs2)
------------[ cut here ]------------
kernel BUG at fs/super.c:505!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4480 Comm: syz.4.20 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : generic_shutdown_super+0x328/0x32c fs/super.c:503
lr : generic_shutdown_super+0x328/0x32c fs/super.c:503
sp : ffff8000212e7790
x29: ffff8000212e7790 x28: ffff0000d32aa480 x27: ffff0000d32aa480
x26: dfff800000000000 x25: 0000000000000002 x24: 1fffe0001a95bcfb
x23: ffff0000d4ade7d8 x22: dfff800000000000 x21: ffff80001210d920
x20: ffff800015a8c9a0 x19: ffff0000d4ade000 x18: 1fffe00033e62d7e
x17: ffff8000153cd000 x16: ffff800011bc8ec8 x15: 0000000000000000
x14: 0000000000000001 x13: 1fffe00033e62da3 x12: 0000000000000000
x11: ff008000083170c8 x10: 0000000000000000 x9 : 4cd13d115a583100
x8 : 4cd13d115a583100 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000212e7258 x4 : ffff8000154b4f40 x3 : ffff800008542f08
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000002f
Call trace:
 generic_shutdown_super+0x328/0x32c fs/super.c:503
 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
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0x54c/0x19ac kernel/exit.c:887
 do_group_exit+0x198/0x238 kernel/exit.c:1030
 get_signal+0x11f4/0x133c kernel/signal.c:2884
 do_signal arch/arm64/kernel/signal.c:1095 [inline]
 do_notify_resume+0x364/0x2c84 arch/arm64/kernel/signal.c:1148
 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+0x9c/0x12c 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
Code: b004a120 910e8000 911aa261 97d97232 (d4210000) 
---[ end trace 0000000000000000 ]---