VFS_BUG_ON_INODE(!S_ISDIR(inode->i_mode)) encountered for inode ffff888012d30878
fs ocfs2 mode 100000 opflags 0x2 flags 0x20 state 0x0 count 2
------------[ cut here ]------------
kernel BUG at fs/namei.c:630!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:lookup_inode_permission_may_exec fs/namei.c:630 [inline]
RIP: 0010:may_lookup fs/namei.c:1908 [inline]
RIP: 0010:link_path_walk+0x18cb/0x18d0 fs/namei.c:2545
Code: e8 ca 2c e3 fe 90 0f 0b e8 42 6f 7f ff 44 89 fd e9 6a fd ff ff e8 35 6f 7f ff 48 89 ef 48 c7 c6 60 e9 bd 8b e8 a6 2c e3 fe 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55
RSP: 0018:ffffc9000a647a20 EFLAGS: 00010286
RAX: 000000000000008e RBX: ffffc9000a647b98 RCX: c1d906d6209ebd00
RDX: ffffc90021003000 RSI: 0000000000000859 RDI: 000000000000085a
RBP: ffff888012d30878 R08: ffffc9000a647747 R09: 1ffff920014c8ee8
R10: dffffc0000000000 R11: fffff520014c8ee9 R12: 0000000000008000
R13: ffffc9000a647b60 R14: 0000000000008000 R15: ffff88802302e620
FS:  00007fd43268e6c0(0000) GS:ffff88808cce8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055862d14b7c8 CR3: 000000001f493000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 path_parentat fs/namei.c:2801 [inline]
 __filename_parentat+0x27f/0x6f0 fs/namei.c:2825
 filename_parentat fs/namei.c:2843 [inline]
 filename_create+0xd9/0x370 fs/namei.c:4869
 do_mkdirat+0xd2/0x4b0 fs/namei.c:5165
 __do_sys_mkdir fs/namei.c:5200 [inline]
 __se_sys_mkdir fs/namei.c:5198 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:5198
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd43179af79
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd43268e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fd431a16090 RCX: 00007fd43179af79
RDX: 0000000000000000 RSI: 0000000000000050 RDI: 0000200000000280
RBP: 00007fd4318316e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd431a16128 R14: 00007fd431a16090 R15: 00007ffe832e76a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:lookup_inode_permission_may_exec fs/namei.c:630 [inline]
RIP: 0010:may_lookup fs/namei.c:1908 [inline]
RIP: 0010:link_path_walk+0x18cb/0x18d0 fs/namei.c:2545
Code: e8 ca 2c e3 fe 90 0f 0b e8 42 6f 7f ff 44 89 fd e9 6a fd ff ff e8 35 6f 7f ff 48 89 ef 48 c7 c6 60 e9 bd 8b e8 a6 2c e3 fe 90 <0f> 0b 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55
RSP: 0018:ffffc9000a647a20 EFLAGS: 00010286
RAX: 000000000000008e RBX: ffffc9000a647b98 RCX: c1d906d6209ebd00
RDX: ffffc90021003000 RSI: 0000000000000859 RDI: 000000000000085a
RBP: ffff888012d30878 R08: ffffc9000a647747 R09: 1ffff920014c8ee8
R10: dffffc0000000000 R11: fffff520014c8ee9 R12: 0000000000008000
R13: ffffc9000a647b60 R14: 0000000000008000 R15: ffff88802302e620
FS:  00007fd43268e6c0(0000) GS:ffff88808cce8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2fe81a5120 CR3: 000000001f493000 CR4: 0000000000352ef0