------------[ cut here ]------------
WARNING: CPU: 0 PID: 5776 at fs/buffer.c:1188 mark_buffer_dirty+0x2bb/0x4d0 fs/buffer.c:1188
Modules linked in:
CPU: 0 PID: 5776 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:mark_buffer_dirty+0x2bb/0x4d0 fs/buffer.c:1188
Code: 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 ff 97 fc ff e8 3a 58 88 ff 48 89 df 5b 41 5c 41 5e 41 5f 5d e9 ea 03 e8 ff e8 25 58 88 ff <0f> 0b e9 84 fd ff ff e8 19 58 88 ff 0f 0b e9 b0 fd ff ff e8 0d 58
RSP: 0000:ffffc900046efcf0 EFLAGS: 00010293
RAX: ffffffff81ff2a4b RBX: ffff888056094570 RCX: ffff8880276eda00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 1ffff11004d19001 R08: ffff888056094577 R09: 1ffff1100ac128ae
R10: dffffc0000000000 R11: ffffed100ac128af R12: 0000000000000000
R13: dffffc0000000000 R14: ffffffff825c6880 R15: ffff8880268c8790
FS:  000055558f371500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c413f1d CR3: 000000006065d000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 hfs_put_super+0x49/0x60 fs/hfs/super.c:49
 generic_shutdown_super+0x134/0x2b0 fs/super.c:693
 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:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcaaf39f397
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:00007ffc1af38b08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007fcaaf43448b RCX: 00007fcaaf39f397
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc1af38bc0
RBP: 00007ffc1af38bc0 R08: 00007ffc1af39bc0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc1af39c50
R13: 00007fcaaf43448b R14: 000000000001afc8 R15: 00007ffc1af39c90
 </TASK>