Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 UID: 0 PID: 6697 Comm: syz.6.72 Not tainted 6.12.0-rc4-syzkaller-00161-gae90f6a6170d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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 6e ee 0f fe e9 ba 06 00 00 e8 64 ee 0f fe e9 4f 01 00 00 e8 5a ee 0f 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:ffffc900044fef80 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000009 RCX: ffff8880240e3c00
RDX: 0000000000000000 RSI: 0000000000000400 RDI: 0000000000000008
RBP: ffffc900044ff790 R08: ffffffff8384bc4b R09: ffffffff83851387
R10: 0000000000000002 R11: ffff8880240e3c00 R12: dffffc0000000000
R13: ffff8880782f8878 R14: 00000000000001c0 R15: 0000000000000000
FS:  00007f1992b7f6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1992b5df98 CR3: 000000007a0b4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_mknod+0xcaf/0x2b40 fs/ocfs2/namei.c:292
 ocfs2_mkdir+0x1ab/0x480 fs/ocfs2/namei.c:655
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4257
 do_mkdirat+0x264/0x3a0 fs/namei.c:4280
 __do_sys_mkdir fs/namei.c:4300 [inline]
 __se_sys_mkdir fs/namei.c:4298 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4298
 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: 0033:0x7f1991d7e719
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:00007f1992b7f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f1991f36058 RCX: 00007f1991d7e719
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000200000c0
RBP: 00007f1991df132e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1991f36058 R15: 00007ffc32813e58
 </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 6e ee 0f fe e9 ba 06 00 00 e8 64 ee 0f fe e9 4f 01 00 00 e8 5a ee 0f 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:ffffc900044fef80 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000009 RCX: ffff8880240e3c00
RDX: 0000000000000000 RSI: 0000000000000400 RDI: 0000000000000008
RBP: ffffc900044ff790 R08: ffffffff8384bc4b R09: ffffffff83851387
R10: 0000000000000002 R11: ffff8880240e3c00 R12: dffffc0000000000
R13: ffff8880782f8878 R14: 00000000000001c0 R15: 0000000000000000
FS:  00007f1992b7f6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0551a855a0 CR3: 000000007a0b4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	e8 6e ee 0f fe       	call   0xfe0fee75
   7:	e9 ba 06 00 00       	jmp    0x6c6
   c:	e8 64 ee 0f fe       	call   0xfe0fee75
  11:	e9 4f 01 00 00       	jmp    0x165
  16:	e8 5a ee 0f fe       	call   0xfe0fee75
  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