tblock:ffffc90002739510: 00000000 00000000 00000000 00000000
tblock:ffffc90002739520: 8c632d80 ffffffff 00000300 00000000
tblock:ffffc90002739530: 02739530 ffffc900 02739530 ffffc900
tblock:ffffc90002739540: 6d9d16a0 ffff8880 00000000 00000000
VFS: Busy inodes after unmount of loop4 (jfs)
------------[ cut here ]------------
kernel BUG at fs/super.c:652!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 5968 Comm: syz-executor Not tainted 6.14.0-rc4-syzkaller-00295-gb91872c56940 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 fs/super.c:650
Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 09 0f ee ff 48 8b 13 48 c7 c7 c0 93 38 8c 4c 89 e6 e8 f7 9d ee fe 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90003bc7b80 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffffffff8ef50c20 RCX: 762e67a6d5fa3a00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1100f8f4cf0 R08: ffffffff81a114cc R09: 1ffff92000778f0c
R10: dffffc0000000000 R11: fffff52000778f0d R12: ffff88807c7a6668
R13: dffffc0000000000 R14: ffffffff8c62a958 R15: ffff88807c7a6780
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcf4a1ff78 CR3: 0000000029e46000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kill_block_super+0x44/0x90 fs/super.c:1710
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1413
 task_work_run+0x24f/0x310 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0xa2a/0x28e0 kernel/exit.c:938
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 __do_sys_exit_group kernel/exit.c:1098 [inline]
 __se_sys_exit_group kernel/exit.c:1096 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1096
 x64_sys_call+0x26a8/0x26b0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f29bcb8d169
Code: Unable to access opcode bytes at 0x7f29bcb8d13f.
RSP: 002b:00007ffc52f91898 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f29bcc0e0b1 RCX: 00007f29bcb8d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000002 R08: 00007ffc52f8f637 R09: 00007ffc52f92b50
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc52f92b50
R13: 00007f29bcc0e08c R14: 0000000000022c4f R15: 00007ffc52f94d10
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:generic_shutdown_super+0x2ca/0x2d0 fs/super.c:650
Code: 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 09 0f ee ff 48 8b 13 48 c7 c7 c0 93 38 8c 4c 89 e6 e8 f7 9d ee fe 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90003bc7b80 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffffffff8ef50c20 RCX: 762e67a6d5fa3a00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1100f8f4cf0 R08: ffffffff81a114cc R09: 1ffff92000778f0c
R10: dffffc0000000000 R11: fffff52000778f0d R12: ffff88807c7a6668
R13: dffffc0000000000 R14: ffffffff8c62a958 R15: ffff88807c7a6780
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdbdfd5d000 CR3: 0000000012376000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400