loop0: detected capacity change from 0 to 64
------------[ cut here ]------------
!buffer_uptodate(bh)
WARNING: fs/buffer.c:1180 at mark_buffer_dirty+0x299/0x440 fs/buffer.c:1180, CPU#0: syz.0.0/5330
Modules linked in:
CPU: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:mark_buffer_dirty+0x299/0x440 fs/buffer.c:1180
Code: 4c 89 f7 e8 b9 fd d9 ff 49 8b 3e be 40 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 e4 60 fb ff e8 6f 2d 6e ff eb 8c e8 68 2d 6e ff 90 <0f> 0b 90 e9 a5 fd ff ff e8 5a 2d 6e ff 90 0f 0b 90 e9 cf fd ff ff
RSP: 0018:ffffc9000de87bc8 EFLAGS: 00010293
RAX: ffffffff82578338 RBX: ffff888047c35828 RCX: ffff88803d830000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 1ffff11003fa7c01 R08: ffff888047c3582f R09: 1ffff11008f86b05
R10: dffffc0000000000 R11: ffffed1008f86b06 R12: dffffc0000000000
R13: ffff88801fd3e638 R14: ffff8880131d2c0b R15: ffff888013181492
FS:  00007f73d29866c0(0000) GS:ffff88808ca51000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559326336ee0 CR3: 0000000011846000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hfs_mdb_commit+0x84b/0x1150 fs/hfs/mdb.c:328
 hfs_sync_fs+0x1d/0x30 fs/hfs/super.c:38
 sync_filesystem+0x1cf/0x230 fs/sync.c:66
 hfs_reconfigure+0x66/0x270 fs/hfs/super.c:122
 reconfigure_super+0x227/0x8a0 fs/super.c:1080
 vfs_cmd_reconfigure fs/fsopen.c:268 [inline]
 vfs_fsconfig_locked+0x171/0x320 fs/fsopen.c:297
 __do_sys_fsconfig fs/fsopen.c:463 [inline]
 __se_sys_fsconfig+0x6c9/0x820 fs/fsopen.c:350
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f73d1b9c799
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:00007f73d2985fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f73d1e15fa0 RCX: 00007f73d1b9c799
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007
RBP: 00007f73d1c32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f73d1e16038 R14: 00007f73d1e15fa0 R15: 00007fff492c7668
 </TASK>