loop0: detected capacity change from 0 to 32768
JBD2: Ignoring recovery information on journal
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 5345 Comm: syz.0.0 Not tainted 6.16.0-rc6-syzkaller-00121-g6832a9317eee #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:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3424 [inline]
RIP: 0010:ocfs2_prepare_dir_for_insert+0x2f41/0x5450 fs/ocfs2/dir.c:4288
Code: ca 8b e8 52 8f 19 00 e9 fd 11 00 00 e8 58 77 26 fe e9 a7 02 00 00 e8 4e 77 26 fe 49 8d 7f 08 4d 8d 77 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 41 20 00 00 4c 89 f0 48 c1 e8 03 42 0f
RSP: 0018:ffffc9000d35f0a0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff888043eede48 RCX: 0000000000100000
RDX: ffffc9000dfda000 RSI: 00000000000006a8 RDI: 0000000000000008
RBP: ffffc9000d35f7b0 R08: ffffc9000d35fac0 R09: 608b7c562adf3b03
R10: 23ec6d672c196c9a R11: 608b7c562adf3b03 R12: dffffc0000000000
R13: ffff888043eeddf8 R14: 0000000000000009 R15: 0000000000000000
FS:  00007f1522a1b6c0(0000) GS:ffff88808d21a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1521dae0d8 CR3: 000000003fe26000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __ocfs2_prepare_orphan_dir+0x145/0x2c0 fs/ocfs2/namei.c:2176
 ocfs2_prepare_orphan_dir+0xf9/0x3f0 fs/ocfs2/namei.c:2221
 ocfs2_unlink+0x90d/0x1940 fs/ocfs2/namei.c:959
 vfs_rmdir+0x3ba/0x520 fs/namei.c:4470
 do_rmdir+0x2ac/0x630 fs/namei.c:4525
 __do_sys_rmdir fs/namei.c:4544 [inline]
 __se_sys_rmdir fs/namei.c:4542 [inline]
 __x64_sys_rmdir+0x47/0x50 fs/namei.c:4542
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1521b8e9a9
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:00007f1522a1b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007f1521db5fa0 RCX: 00007f1521b8e9a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000000
RBP: 00007f1521c10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1521db5fa0 R15: 00007ffcfe0361f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_find_dir_space_id fs/ocfs2/dir.c:3424 [inline]
RIP: 0010:ocfs2_prepare_dir_for_insert+0x2f41/0x5450 fs/ocfs2/dir.c:4288
Code: ca 8b e8 52 8f 19 00 e9 fd 11 00 00 e8 58 77 26 fe e9 a7 02 00 00 e8 4e 77 26 fe 49 8d 7f 08 4d 8d 77 09 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 41 20 00 00 4c 89 f0 48 c1 e8 03 42 0f
RSP: 0018:ffffc9000d35f0a0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff888043eede48 RCX: 0000000000100000
RDX: ffffc9000dfda000 RSI: 00000000000006a8 RDI: 0000000000000008
RBP: ffffc9000d35f7b0 R08: ffffc9000d35fac0 R09: 608b7c562adf3b03
R10: 23ec6d672c196c9a R11: 608b7c562adf3b03 R12: dffffc0000000000
R13: ffff888043eeddf8 R14: 0000000000000009 R15: 0000000000000000
FS:  00007f1522a1b6c0(0000) GS:ffff88808d21a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1521dae0d8 CR3: 000000003fe26000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	e8 52 8f 19 00       	call   0x198f57
   5:	e9 fd 11 00 00       	jmp    0x1207
   a:	e8 58 77 26 fe       	call   0xfe267767
   f:	e9 a7 02 00 00       	jmp    0x2bb
  14:	e8 4e 77 26 fe       	call   0xfe267767
  19:	49 8d 7f 08          	lea    0x8(%r15),%rdi
  1d:	4d 8d 77 09          	lea    0x9(%r15),%r14
  21:	48 89 f8             	mov    %rdi,%rax
  24:	48 c1 e8 03          	shr    $0x3,%rax
* 28:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2d:	84 c0                	test   %al,%al
  2f:	0f 85 41 20 00 00    	jne    0x2076
  35:	4c 89 f0             	mov    %r14,%rax
  38:	48 c1 e8 03          	shr    $0x3,%rax
  3c:	42                   	rex.X
  3d:	0f                   	.byte 0xf