tblock:ffffc900027092a0: 00000001 00000000 00000100 dead0000
tblock:ffffc900027092b0: 00000122 dead0000 00003cbc 00000000
tblock:ffffc900027092c0: 4477f700 ffff8881 00000003 00000cbc
tblock:ffffc900027092d0: 00000000 dead4ead ffffffff 00000000
tblock:ffffc900027092e0: ffffffff ffffffff 99a1e3c0 ffffffff
tblock:ffffc900027092f0: 93304340 ffffffff 00000000 00000000
tblock:ffffc90002709300: 8ba58ea0 ffffffff 00000300 00000000
tblock:ffffc90002709310: 02709310 ffffc900 02709310 ffffc900
tblock:ffffc90002709320: 55ce0d58 ffff8880 00000000 00000000
VFS: Busy inodes after unmount of loop4 (jfs)
------------[ cut here ]------------
kernel BUG at fs/super.c:653!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5828 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:generic_shutdown_super+0x2bc/0x2c0 fs/super.c:651
Code: 03 42 80 3c 28 00 74 08 4c 89 f7 e8 8e fa ed ff 49 8b 16 48 81 c3 68 06 00 00 48 c7 c7 20 b2 79 8b 48 89 de e8 b5 8b ee fe 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f
RSP: 0018:ffffc90003fefba0 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffff88807a2ec668 RCX: be2ad12328bb0700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1100f45d8f0 R08: ffffffff8f822077 R09: 1ffffffff1f0440e
R10: dffffc0000000000 R11: fffffbfff1f0440f R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8e38be20 R15: ffff88807a2ec780
FS:  0000000000000000(0000) GS:ffff888125e21000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc58d371fb8 CR3: 0000000048b96000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 kill_block_super+0x44/0x90 fs/super.c:1722
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1318
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x694/0x22f0 kernel/exit.c:971
 do_group_exit+0x21c/0x2d0 kernel/exit.c:1112
 __do_sys_exit_group kernel/exit.c:1123 [inline]
 __se_sys_exit_group kernel/exit.c:1121 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121
 x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f89d078f749
Code: Unable to access opcode bytes at 0x7f89d078f71f.
RSP: 002b:00007ffcf8242a88 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f89d0813da2 RCX: 00007f89d078f749
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000002 R08: 00007ffcf8240827 R09: 00007ffcf8243d40
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcf8243d40
R13: 00007f89d0813d7d R14: 000000000004b423 R15: 00007ffcf8246ff0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:generic_shutdown_super+0x2bc/0x2c0 fs/super.c:651
Code: 03 42 80 3c 28 00 74 08 4c 89 f7 e8 8e fa ed ff 49 8b 16 48 81 c3 68 06 00 00 48 c7 c7 20 b2 79 8b 48 89 de e8 b5 8b ee fe 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f
RSP: 0018:ffffc90003fefba0 EFLAGS: 00010246
RAX: 000000000000002d RBX: ffff88807a2ec668 RCX: be2ad12328bb0700
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1100f45d8f0 R08: ffffffff8f822077 R09: 1ffffffff1f0440e
R10: dffffc0000000000 R11: fffffbfff1f0440f R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8e38be20 R15: ffff88807a2ec780
FS:  0000000000000000(0000) GS:ffff888125e21000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc58d371fb8 CR3: 0000000048b96000 CR4: 0000000000350ef0