------------[ cut here ]------------
WARNING: CPU: 1 PID: 4421 at fs/buffer.c:1081 mark_buffer_dirty+0x383/0x7a0 fs/buffer.c:1081
Modules linked in:
CPU: 1 PID: 4421 Comm: syz.2.9 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:mark_buffer_dirty+0x383/0x7a0 fs/buffer.c:1081
Code: 83 71 e2 ff 49 8b 3f be 04 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 fc a9 fc ff e8 27 65 91 ff e9 43 ff ff ff e8 1d 65 91 ff <0f> 0b e9 ba fc ff ff e8 11 65 91 ff 0f 0b e9 00 fd ff ff e8 05 65
RSP: 0018:ffffc90004c9fc00 EFLAGS: 00010283
RAX: ffffffff81f11033 RBX: ffff888066e343a0 RCX: 0000000000080000
RDX: ffffc9000f624000 RSI: 000000000004a074 RDI: 000000000004a075
RBP: 1ffff11004864801 R08: ffff888066e343a7 R09: 1ffff1100cdc6874
R10: dffffc0000000000 R11: ffffed100cdc6875 R12: dffffc0000000000
R13: ffff888024324678 R14: ffff88804f514c0b R15: ffff888051c80492
FS:  00007fb7806676c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f9c415000 CR3: 000000007e47b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_mdb_commit+0x7cb/0x1100 fs/hfs/mdb.c:302
 hfs_sync_fs+0x11/0x20 fs/hfs/super.c:35
 sync_filesystem+0x1be/0x220 fs/sync.c:66
 hfs_remount+0x2b/0x220 fs/hfs/super.c:115
 reconfigure_super+0x219/0x8a0 fs/super.c:977
 vfs_fsconfig_locked+0x18d/0x3f0 fs/fsopen.c:260
 __do_sys_fsconfig fs/fsopen.c:445 [inline]
 __se_sys_fsconfig+0x65a/0x790 fs/fsopen.c:320
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb77f79ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb780667028 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007fb77fa16090 RCX: 00007fb77f79ce59
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007
RBP: 00007fb77f832d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb77fa16128 R14: 00007fb77fa16090 R15: 00007ffecf52b828
 </TASK>