tblock:ffffc900031b1a70: 92d1a1c8 ffffffff 00000000 00000000
tblock:ffffc900031b1a80: 8b2d2200 ffffffff 00000200 00000000
tblock:ffffc900031b1a90: 00000000 00000000 00000000 00000000
tblock:ffffc900031b1aa0: 00000000 00000000 994ff6a0 ffffffff
tblock:ffffc900031b1ab0: 92dab790 ffffffff 00000000 00000000
tblock:ffffc900031b1ac0: 8b6a9760 ffffffff 00000300 00000000
tblock:ffffc900031b1ad0: 031b1ad0 ffffc900 031b1ad0 ffffc900
tblock:ffffc900031b1ae0: 609f5c00 ffff8880 00000040 00000000
VFS: Busy inodes after unmount of loop8 (jfs)
------------[ cut here ]------------
kernel BUG at fs/super.c:656!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 6731 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:generic_shutdown_super+0x2c4/0x2d0 fs/super.c:654
Code: 03 42 80 3c 28 00 74 08 4c 89 f7 e8 66 65 f2 ff 49 8b 16 48 81 c3 c8 07 00 00 48 c7 c7 80 11 3d 8b 48 89 de e8 7d 92 f1 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:ffffc90004ca7d00 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffff8880295467c8 RCX: 8406250988a81e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff110052a8d1a R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017124923 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8e03c260 R15: ffff8880295468d0
FS:  000055556ff4a500(0000) GS:ffff888126695000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563d9c96e138 CR3: 0000000029958000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 kill_block_super+0x44/0x90 fs/super.c:1725
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 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:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6460eed1d7
Code: a2 c7 05 bc e3 24 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:00007ffeb71fc718 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000064 RCX: 00007f6460eed1d7
RDX: 0000000000000200 RSI: 0000000000000009 RDI: 00007ffeb71fd8c0
RBP: 00007f6460f81c3b R08: 00000000000105a0 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffeb71fd8c0
R13: 00007f6460f81c3b R14: 000055556ff4a4e8 R15: 00007ffeb71fe990
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:generic_shutdown_super+0x2c4/0x2d0 fs/super.c:654
Code: 03 42 80 3c 28 00 74 08 4c 89 f7 e8 66 65 f2 ff 49 8b 16 48 81 c3 c8 07 00 00 48 c7 c7 80 11 3d 8b 48 89 de e8 7d 92 f1 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:ffffc90004ca7d00 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffff8880295467c8 RCX: 8406250988a81e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff110052a8d1a R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017124923 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8e03c260 R15: ffff8880295468d0
FS:  000055556ff4a500(0000) GS:ffff888126695000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563d9c96e138 CR3: 0000000029958000 CR4: 00000000003526f0