syzbot

VFS_BUG_ON_INODE(!S_ISDIR(inode->i_mode)): inode:ffff888043cc5c60 fs:ocfs2 mode:100000 opflags:0x2 flags:0x20 state:0x0 count:2
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kernel BUG at fs/namei.c:687!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5811 Comm: syz.0.72 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:687 [inline]
RIP: 0010:may_lookup fs/namei.c:1961 [inline]
RIP: 0010:link_path_walk+0x1904/0x1910 fs/namei.c:2604
Code: e8 91 69 03 00 90 0f 0b e8 19 48 79 ff 45 89 fc e9 54 fd ff ff e8 0c 48 79 ff 4c 89 e7 48 c7 c6 40 c6 de 8b e8 6d 69 03 00 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000369f968 EFLAGS: 00010246
RAX: 91554290a6aeef00 RBX: ffffc9000369fc58 RCX: 91554290a6aeef00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000008000 R08: ffffc9000369f547 R09: 1ffff920006d3ea8
R10: dffffc0000000000 R11: fffff520006d3ea9 R12: ffff888043cc5c60
R13: ffffc9000369fc70 R14: 0000000000008000 R15: ffff888041245e18
FS:  0000555574274500(0000) GS:ffff88808c815000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb8791456b8 CR3: 000000004f982000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 path_openat+0x236/0x3830 fs/namei.c:4855
 do_file_open+0x23e/0x4a0 fs/namei.c:4888
 do_sys_openat2+0x115/0x200 fs/open.c:1368
 do_sys_open fs/open.c:1374 [inline]
 __do_sys_open fs/open.c:1382 [inline]
 __se_sys_open fs/open.c:1378 [inline]
 __x64_sys_open+0x11e/0x150 fs/open.c:1378
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f773ff9ce59
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:00007fffd1f0ef18 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f7740215fa0 RCX: 00007f773ff9ce59
RDX: 0000000000000004 RSI: 0000000000101000 RDI: 00002000000001c0
RBP: 00007f7740032e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7740215fac R14: 00007f7740215fa0 R15: 00007f7740215fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:lookup_inode_permission_may_exec fs/namei.c:687 [inline]
RIP: 0010:may_lookup fs/namei.c:1961 [inline]
RIP: 0010:link_path_walk+0x1904/0x1910 fs/namei.c:2604
Code: e8 91 69 03 00 90 0f 0b e8 19 48 79 ff 45 89 fc e9 54 fd ff ff e8 0c 48 79 ff 4c 89 e7 48 c7 c6 40 c6 de 8b e8 6d 69 03 00 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000369f968 EFLAGS: 00010246
RAX: 91554290a6aeef00 RBX: ffffc9000369fc58 RCX: 91554290a6aeef00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000008000 R08: ffffc9000369f547 R09: 1ffff920006d3ea8
R10: dffffc0000000000 R11: fffff520006d3ea9 R12: ffff888043cc5c60
R13: ffffc9000369fc70 R14: 0000000000008000 R15: ffff888041245e18
FS:  0000555574274500(0000) GS:ffff88808c815000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0810d86480 CR3: 000000004f982000 CR4: 0000000000352ef0