loop0: detected capacity change from 0 to 32768
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with writeback data mode.
(syz.0.0,5329,0):ocfs2_dio_end_io:2424 ERROR: Direct IO failed, bytes = -28
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted 6.12.0-rc7-syzkaller-00187-gf868cd251776 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3407 [inline]
RIP: 0010:ocfs2_prepare_dir_for_insert+0x3305/0x5c60 fs/ocfs2/dir.c:4271
Code: 00 00 e8 1e 86 0c fe e9 ba 06 00 00 e8 14 86 0c fe e9 4f 01 00 00 e8 0a 86 0c fe 49 8d 7f 08 49 8d 5f 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bd 23 00 00 48 89 d8 48 c1 e8 03 42 0f
RSP: 0018:ffffc9000db0eec0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000009 RCX: 0000000000040000
RDX: ffffc9000d2d1000 RSI: 00000000000006dd RDI: 0000000000000008
RBP: ffffc9000db0f6d0 R08: ffffffff8388373b R09: ffffffff83888e77
R10: 0000000000000002 R11: ffff88801eeea440 R12: dffffc0000000000
R13: ffff888043fa5df8 R14: 00000000000001c0 R15: 0000000000000000
FS:  00007f59413056c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200000c0 CR3: 00000000413a0000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ocfs2_prepare_orphan_dir+0x146/0x310 fs/ocfs2/namei.c:2175
 ocfs2_prepare_orphan_dir+0x193/0x4d0 fs/ocfs2/namei.c:2220
 ocfs2_unlink+0x9de/0x1c90 fs/ocfs2/namei.c:958
 vfs_unlink+0x365/0x650 fs/namei.c:4469
 do_unlinkat+0x4ae/0x830 fs/namei.c:4533
 __do_sys_unlink fs/namei.c:4581 [inline]
 __se_sys_unlink fs/namei.c:4579 [inline]
 __x64_sys_unlink+0x47/0x50 fs/namei.c:4579
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f594057e719
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:00007f5941305038 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 00007f5940735f80 RCX: 00007f594057e719
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 00007f59405f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5940735f80 R15: 00007ffe9db23ce8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3407 [inline]
RIP: 0010:ocfs2_prepare_dir_for_insert+0x3305/0x5c60 fs/ocfs2/dir.c:4271
Code: 00 00 e8 1e 86 0c fe e9 ba 06 00 00 e8 14 86 0c fe e9 4f 01 00 00 e8 0a 86 0c fe 49 8d 7f 08 49 8d 5f 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 bd 23 00 00 48 89 d8 48 c1 e8 03 42 0f
RSP: 0018:ffffc9000db0eec0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000009 RCX: 0000000000040000
RDX: ffffc9000d2d1000 RSI: 00000000000006dd RDI: 0000000000000008
RBP: ffffc9000db0f6d0 R08: ffffffff8388373b R09: ffffffff83888e77
R10: 0000000000000002 R11: ffff88801eeea440 R12: dffffc0000000000
R13: ffff888043fa5df8 R14: 00000000000001c0 R15: 0000000000000000
FS:  00007f59413056c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200000c0 CR3: 00000000413a0000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	e8 1e 86 0c fe       	call   0xfe0c8625
   7:	e9 ba 06 00 00       	jmp    0x6c6
   c:	e8 14 86 0c fe       	call   0xfe0c8625
  11:	e9 4f 01 00 00       	jmp    0x165
  16:	e8 0a 86 0c fe       	call   0xfe0c8625
  1b:	49 8d 7f 08          	lea    0x8(%r15),%rdi
  1f:	49 8d 5f 09          	lea    0x9(%r15),%rbx
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 bd 23 00 00    	jne    0x23f4
  37:	48 89 d8             	mov    %rbx,%rax
  3a:	48 c1 e8 03          	shr    $0x3,%rax
  3e:	42                   	rex.X
  3f:	0f                   	.byte 0xf