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: 1 PID: 5541 Comm: syz.4.225 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026
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 : ffff8000219b7790
x29: ffff8000219b7790 x28: ffff0000d50a0300 x27: ffff0000d50a0300
x26: dfff800000000000 x25: 0000000000000002 x24: 1fffe0001bff28fb
x23: ffff0000dff947d8 x22: dfff800000000000 x21: ffff8000120cb440
x20: ffff800015a39600 x19: ffff0000dff94000 x18: 1fffe00033e7697e
x17: ffff80001537d000 x16: ffff800011b8ee98 x15: 0000000000000000
x14: 0000000000000001 x13: 1ffff00004336e58 x12: 0000000000000000
x11: ff00800008315174 x10: 0000000000000000 x9 : 2ec310e7b082c200
x8 : 2ec310e7b082c200 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000219b7258 x4 : ffff800015464e60 x3 : ffff80000a91ef3c
x2 : ffff00019f3b4d10 x1 : 0000000100000000 x0 : 000000000000002f
Call trace:
 generic_shutdown_super+0x328/0x32c fs/super.c:503
 kill_block_super+0x78/0xe0 fs/super.c:1470
 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:881
 do_group_exit+0x198/0x238 kernel/exit.c:1024
 get_signal+0x11f4/0x133c kernel/signal.c:2872
 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+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
Code: d0049f40 91358000 911aa261 97d9879c (d4210000) 
---[ end trace 0000000000000000 ]---