syzbot

loop0: detected capacity change from 0 to 64
------------[ cut here ]------------
kernel BUG at fs/hfs/btree.c:41!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 25107 Comm: syz-executor.0 Not tainted 6.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:hfs_btree_open+0xf09/0xf20 fs/hfs/btree.c:41
Code: 7e ff e9 7e fa ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 9b fa ff ff 4c 89 f7 e8 21 79 7e ff e9 8e fa ff ff e8 97 06 24 ff <0f> 0b e8 90 06 24 ff 0f 0b e8 89 06 24 ff 0f 0b 0f 1f 80 00 00 00
RSP: 0000:ffffc900106c7738 EFLAGS: 00010283
RAX: ffffffff826a03d9 RBX: ffff888075f89fd0 RCX: 0000000000040000
RDX: ffffc900044d1000 RSI: 0000000000005a22 RDI: 0000000000005a23
RBP: 0000000000000000 R08: ffffffff8269f637 R09: 1ffff1100ebf1415
R10: dffffc0000000000 R11: ffffed100ebf1416 R12: ffff88807a9aa000
R13: ffff88802019c008 R14: ffff88802019c000 R15: dffffc0000000000
FS:  00007fbbb65a26c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc0b74e9000 CR3: 0000000021897000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_mdb_get+0x1443/0x21b0 fs/hfs/mdb.c:199
 hfs_fill_super+0x107d/0x1790 fs/hfs/super.c:406
 mount_bdev+0x237/0x300 fs/super.c:1629
 legacy_get_tree+0xef/0x190 fs/fs_context.c:638
 vfs_get_tree+0x8c/0x280 fs/super.c:1750
 do_new_mount+0x28f/0xae0 fs/namespace.c:3335
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbbb587e1ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbbb65a1ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbbb65a1f80 RCX: 00007fbbb587e1ea
RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 00007fbbb65a1f40
RBP: 00000000200000c0 R08: 00007fbbb65a1f80 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000100
R13: 00007fbbb65a1f40 R14: 000000000000029f R15: 00000000200001c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfs_btree_open+0xf09/0xf20 fs/hfs/btree.c:41
Code: 7e ff e9 7e fa ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 9b fa ff ff 4c 89 f7 e8 21 79 7e ff e9 8e fa ff ff e8 97 06 24 ff <0f> 0b e8 90 06 24 ff 0f 0b e8 89 06 24 ff 0f 0b 0f 1f 80 00 00 00
RSP: 0000:ffffc900106c7738 EFLAGS: 00010283
RAX: ffffffff826a03d9 RBX: ffff888075f89fd0 RCX: 0000000000040000
RDX: ffffc900044d1000 RSI: 0000000000005a22 RDI: 0000000000005a23
RBP: 0000000000000000 R08: ffffffff8269f637 R09: 1ffff1100ebf1415
R10: dffffc0000000000 R11: ffffed100ebf1416 R12: ffff88807a9aa000
R13: ffff88802019c008 R14: ffff88802019c000 R15: dffffc0000000000
FS:  00007fbbb65a26c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f359e2c66e4 CR3: 0000000021897000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400