NILFS (loop7): discard dirty block: blocknr=10, size=2048
NILFS (loop7): discard dirty page: offset=4096, ino=3
NILFS (loop7): discard dirty block: blocknr=11, size=2048
NILFS (loop7): discard dirty block: blocknr=18446744073709551615, size=2048
VFS: Busy inodes after unmount of loop7 (nilfs2)
------------[ cut here ]------------
kernel BUG at fs/super.c:697!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 32058 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:generic_shutdown_super+0x2ad/0x2b0 fs/super.c:695
Code: e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 9c 4a f0 ff 49 8b 16 48 81 c3 60 06 00 00 48 c7 c7 20 b7 d7 8a 48 89 de e8 a3 35 97 08 <0f> 0b 90 66 0f 1f 00 55 41 57 41 56 53 48 89 fb 49 bf 00 00 00 00
RSP: 0018:ffffc900032c7d30 EFLAGS: 00010246
RAX: 0000000000000030 RBX: ffff88806b7fe660 RCX: 8d8f880e7847f000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1100d6ffcf2 R08: ffff8880b8e28c53 R09: 1ffff110171c518a
R10: dffffc0000000000 R11: ffffed10171c518b R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8d5fc760 R15: ffff88806b7fe790
FS:  0000555580c2f500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f66c9ab1ff8 CR3: 000000002d9ff000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 kill_block_super+0x44/0x90 fs/super.c:1668
 deactivate_locked_super+0x97/0x100 fs/super.c:481
 cleanup_mnt+0x3d7/0x460 fs/namespace.c:1259
 task_work_run+0x1d4/0x260 kernel/task_work.c:245
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:180
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213
 __syscall_exit_to_user_mode_work kernel/entry/common.c:294 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:305
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7effb839f397
Code: a2 c7 05 5c 43 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:00007ffe11595c38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007effb84344bb RCX: 00007effb839f397
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe11595cf0
RBP: 00007ffe11595cf0 R08: 00007ffe11596cf0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe11596d80
R13: 00007effb84344bb R14: 000000000011e029 R15: 00007ffe11596dc0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:generic_shutdown_super+0x2ad/0x2b0 fs/super.c:695
Code: e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 9c 4a f0 ff 49 8b 16 48 81 c3 60 06 00 00 48 c7 c7 20 b7 d7 8a 48 89 de e8 a3 35 97 08 <0f> 0b 90 66 0f 1f 00 55 41 57 41 56 53 48 89 fb 49 bf 00 00 00 00
RSP: 0018:ffffc900032c7d30 EFLAGS: 00010246
RAX: 0000000000000030 RBX: ffff88806b7fe660 RCX: 8d8f880e7847f000
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 1ffff1100d6ffcf2 R08: ffff8880b8e28c53 R09: 1ffff110171c518a
R10: dffffc0000000000 R11: ffffed10171c518b R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff8d5fc760 R15: ffff88806b7fe790
FS:  0000555580c2f500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe1f1fc000 CR3: 000000002d9ff000 CR4: 00000000003506f0