loop0: detected capacity change from 0 to 64
Buffer I/O error on dev loop0, logical block 62, lost sync page write
getblk(): invalid block size 512 requested
logical block size: 32768
CPU: 0 UID: 0 PID: 5310 Comm: syz.0.0 Not tainted 6.15.0-rc4-syzkaller-00256-g95d3481af6dc #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 __getblk_slow fs/buffer.c:1133 [inline]
 bdev_getblk+0x59e/0x670 fs/buffer.c:1466
 __bread_gfp+0x89/0x3c0 fs/buffer.c:1520
 sb_bread include/linux/buffer_head.h:348 [inline]
 hfs_mdb_commit+0xc0a/0x1160 fs/hfs/mdb.c:318
 hfs_sync_fs+0x15/0x20 fs/hfs/super.c:37
 sync_filesystem+0xeb/0x230 fs/sync.c:56
 hfs_reconfigure+0x66/0x270 fs/hfs/super.c:119
 reconfigure_super+0x224/0x890 fs/super.c:1083
 vfs_cmd_reconfigure fs/fsopen.c:262 [inline]
 vfs_fsconfig_locked+0x171/0x320 fs/fsopen.c:291
 __do_sys_fsconfig fs/fsopen.c:467 [inline]
 __se_sys_fsconfig+0x78e/0x8d0 fs/fsopen.c:344
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f8718e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8f835f5038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f8f873b5fa0 RCX: 00007f8f8718e969
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000008
RBP: 00007f8f87210ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8f873b5fa0 R15: 00007ffee301d448
 </TASK>
hfs: unable to read volume bitmap
Buffer I/O error on dev loop0, logical block 2, lost async page write
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5310 at fs/buffer.c:1186 mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1186
Modules linked in:
CPU: 0 UID: 0 PID: 5310 Comm: syz.0.0 Not tainted 6.15.0-rc4-syzkaller-00256-g95d3481af6dc #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:mark_buffer_dirty+0x2a9/0x410 fs/buffer.c:1186
Code: 4c 89 f7 e8 79 0d de ff 49 8b 3e be 20 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 c4 34 fc ff e8 8f 18 7c ff eb 8c e8 88 18 7c ff 90 <0f> 0b 90 e9 95 fd ff ff e8 7a 18 7c ff 90 0f 0b 90 e9 bf fd ff ff
RSP: 0018:ffffc9000d2d7be8 EFLAGS: 00010287
RAX: ffffffff8243a7c8 RBX: ffff8880427cd2b8 RCX: 0000000000100000
RDX: ffffc9000dce2000 RSI: 000000000001102a RDI: 000000000001102b
RBP: 1ffff1100a488401 R08: ffff8880427cd2bf R09: 1ffff110084f9a57
R10: dffffc0000000000 R11: ffffed10084f9a58 R12: dffffc0000000000
R13: ffff888052442638 R14: ffff88804c77445b R15: ffff88804c774400
FS:  00007f8f835f56c0(0000) GS:ffff88808d6cb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002c80 CR3: 0000000042000000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_mdb_commit+0x489/0x1160 fs/hfs/mdb.c:283
 hfs_sync_fs+0x15/0x20 fs/hfs/super.c:37
 sync_filesystem+0x1cc/0x230 fs/sync.c:66
 hfs_reconfigure+0x66/0x270 fs/hfs/super.c:119
 reconfigure_super+0x224/0x890 fs/super.c:1083
 vfs_cmd_reconfigure fs/fsopen.c:262 [inline]
 vfs_fsconfig_locked+0x171/0x320 fs/fsopen.c:291
 __do_sys_fsconfig fs/fsopen.c:467 [inline]
 __se_sys_fsconfig+0x78e/0x8d0 fs/fsopen.c:344
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8f8718e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8f835f5038 EFLAGS: 00000246 ORIG_RAX: 00000000000001af
RAX: ffffffffffffffda RBX: 00007f8f873b5fa0 RCX: 00007f8f8718e969
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000008
RBP: 00007f8f87210ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8f873b5fa0 R15: 00007ffee301d448
 </TASK>