tblock:ffffc900031d98f0: 8b4d1580 ffffffff 00000200 00000000
tblock:ffffc900031d9900: 00000000 00000000 00000000 00000000
tblock:ffffc900031d9910: 00000000 00000000 997594c0 ffffffff
tblock:ffffc900031d9920: 930169a8 ffffffff 00000000 00000000
tblock:ffffc900031d9930: 8b8ad960 ffffffff 00000300 00000000
tblock:ffffc900031d9940: 031d9940 ffffc900 031d9940 ffffc900
tblock:ffffc900031d9950: 5b62a180 ffff8880 00000007 00000000
VFS: Busy inodes after unmount of loop1 (jfs)
------------[ cut here ]------------
kernel BUG at fs/super.c:656!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 5797 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:generic_shutdown_super+0x2c4/0x2d0 fs/super.c:654
Code: 03 42 80 3c 28 00 74 08 4c 89 f7 e8 76 38 f2 ff 49 8b 16 48 81 c3 c8 07 00 00 48 c7 c7 80 24 5d 8b 48 89 de e8 6d 24 ef 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:ffffc90004807ba0 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffff88806013e7c8 RCX: a43517473d20e300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1100c027d1a R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000900f25 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8e243540 R15: ffff88806013e8d0
FS:  0000000000000000(0000) GS:ffff88812643c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd3b26b9e80 CR3: 0000000024524000 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
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x70f/0x23c0 kernel/exit.c:976
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1118
 __do_sys_exit_group kernel/exit.c:1129 [inline]
 __se_sys_exit_group kernel/exit.c:1127 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1127
 x64_sys_call+0x221a/0x2240 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7f1f86c799
Code: Unable to access opcode bytes at 0x7f7f1f86c76f.
RSP: 002b:00007ffe412fe368 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f7f1f9020c2 RCX: 00007f7f1f86c799
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000016 R08: 0000000000000000 R09: 00007f7f1f902050
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe412ff620
R13: 00007f7f1f902050 R14: 00005555643774e8 R15: 00007ffe413039c0
 </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 76 38 f2 ff 49 8b 16 48 81 c3 c8 07 00 00 48 c7 c7 80 24 5d 8b 48 89 de e8 6d 24 ef 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:ffffc90004807ba0 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffff88806013e7c8 RCX: a43517473d20e300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 1ffff1100c027d1a R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52000900f25 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8e243540 R15: ffff88806013e8d0
FS:  0000000000000000(0000) GS:ffff88812643c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd3b26b9e80 CR3: 0000000024524000 CR4: 00000000003526f0