tblock:ffffc900030c9750: 00000000 00000000 00000000 00000000
tblock:ffffc900030c9760: 8b4d1c40 ffffffff 00000200 00000000
tblock:ffffc900030c9770: 00000000 00000000 00000000 00000000
tblock:ffffc900030c9780: 00000000 00000000 999527e0 ffffffff
tblock:ffffc900030c9790: 00000000 00000000 00000000 00000000
tblock:ffffc900030c97a0: 8b8be7e0 ffffffff 00000300 00000000
tblock:ffffc900030c97b0: 030c97b0 ffffc900 030c97b0 ffffc900
tblock:ffffc900030c97c0: 60860440 ffff8880 0000000b 00000000
VFS: Busy inodes after unmount of loop7 (jfs)
------------[ cut here ]------------
kernel BUG at fs/super.c:657!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 12334 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:generic_shutdown_super+0x2c4/0x2d0 fs/super.c:655
Code: 03 42 80 3c 28 00 74 08 4c 89 f7 e8 d6 85 f1 ff 49 8b 16 48 81 c3 48 08 00 00 48 c7 c7 80 c1 5d 8b 48 89 de e8 1d 80 ea fe 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90004c87d10 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffff88805c71c848 RCX: 4d33f83263efb300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1100b8e392a R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000990f51 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8e450560 R15: ffff88805c71c950
FS:  000055557b7e0500(0000) GS:ffff888126144000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557190797cd8 CR3: 00000000330fc000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kill_block_super+0x44/0x90 fs/super.c:1665
 deactivate_locked_super+0xbc/0x130 fs/super.c:477
 cleanup_mnt+0x3d3/0x460 fs/namespace.c:1317
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:70 [inline]
 exit_to_user_mode_loop+0x1fa/0x730 kernel/entry/common.c:101
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc18a1ae097
Code: a2 c7 05 5c 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc2dc49d68 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007fc18a1ae097
RDX: 0000000000000200 RSI: 0000000000000009 RDI: 00007ffc2dc4af10
RBP: 00007fc18a2422ca R08: 00000000000105a0 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffc2dc4af10
R13: 00007fc18a2422ca R14: 000055557b7e04e8 R15: 00007ffc2dc4bfe0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:generic_shutdown_super+0x2c4/0x2d0 fs/super.c:655
Code: 03 42 80 3c 28 00 74 08 4c 89 f7 e8 d6 85 f1 ff 49 8b 16 48 81 c3 48 08 00 00 48 c7 c7 80 c1 5d 8b 48 89 de e8 1d 80 ea fe 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90004c87d10 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffff88805c71c848 RCX: 4d33f83263efb300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1100b8e392a R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000990f51 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8e450560 R15: ffff88805c71c950
FS:  000055557b7e0500(0000) GS:ffff888126144000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7ff1b3feb CR3: 00000000330fc000 CR4: 00000000003526f0