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: 2 PID: 32623 Comm: syz-executor.0 Not tainted 6.6.0-rc3-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:hfs_btree_open+0xc87/0x1050 fs/hfs/btree.c:41
Code: 2d ff 41 83 ff 25 0f 84 4d ff ff ff e8 d2 11 2d ff 8b 34 24 48 c7 c7 80 e0 a7 8a e8 a3 33 10 ff e9 01 fe ff ff e8 b9 11 2d ff <0f> 0b e8 b2 11 2d ff 8b 34 24 48 c7 c7 20 e0 a7 8a e8 83 33 10 ff
RSP: 0018:ffffc9000358f860 EFLAGS: 00010287
RAX: 00000000000185fa RBX: ffff8880406dc000 RCX: ffffc90027b73000
RDX: 0000000000040000 RSI: ffffffff825ab507 RDI: 0000000000000007
RBP: ffff88802a449870 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000258 R12: 0000000000000003
R13: ffff8880406dc008 R14: ffff8880633dc000 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000f7fb3b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7356178 CR3: 00000000259f4000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_mdb_get+0x15d0/0x2020 fs/hfs/mdb.c:199
 hfs_fill_super+0xb1e/0x16e0 fs/hfs/super.c:406
 mount_bdev+0x1f3/0x2e0 fs/super.c:1629
 legacy_get_tree+0x109/0x220 fs/fs_context.c:638
 vfs_get_tree+0x8c/0x370 fs/super.c:1750
 do_new_mount fs/namespace.c:3335 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount fs/namespace.c:3861 [inline]
 __ia32_sys_mount+0x291/0x310 fs/namespace.c:3861
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
 entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7fb8579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7fb33f0 EFLAGS: 00000296 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00000000f7fb3460 RCX: 0000000020000200
RDX: 0000000020000040 RSI: 0000000003004002 RDI: 00000000f7fb34a0
RBP: 0000000020000040 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:hfs_btree_open+0xc87/0x1050 fs/hfs/btree.c:41
Code: 2d ff 41 83 ff 25 0f 84 4d ff ff ff e8 d2 11 2d ff 8b 34 24 48 c7 c7 80 e0 a7 8a e8 a3 33 10 ff e9 01 fe ff ff e8 b9 11 2d ff <0f> 0b e8 b2 11 2d ff 8b 34 24 48 c7 c7 20 e0 a7 8a e8 83 33 10 ff
RSP: 0018:ffffc9000358f860 EFLAGS: 00010287
RAX: 00000000000185fa RBX: ffff8880406dc000 RCX: ffffc90027b73000
RDX: 0000000000040000 RSI: ffffffff825ab507 RDI: 0000000000000007
RBP: ffff88802a449870 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000258 R12: 0000000000000003
R13: ffff8880406dc008 R14: ffff8880633dc000 R15: 0000000000000003
FS:  0000000000000000(0000) GS:ffff88802c800000(0063) knlGS:00000000f7fb3b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7356178 CR3: 00000000259f4000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi