------------[ cut here ]------------
!(inode_state_read_once(inode) & I_LINKABLE)
WARNING: fs/inode.c:475 at inc_nlink+0x122/0x150 fs/inode.c:475, CPU#1: syz.1.15/6018
Modules linked in:
CPU: 1 UID: 0 PID: 6018 Comm: syz.1.15 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:inc_nlink+0x122/0x150 fs/inode.c:475
Code: ea ff e9 3a ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4c ff ff ff 48 89 df e8 39 dd ea ff e9 3f ff ff ff e8 ff b8 84 ff 90 <0f> 0b 90 eb 80 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 50 ff ff ff
RSP: 0018:ffffc900055474f0 EFLAGS: 00010287
RAX: ffffffff823fccc1 RBX: ffff888041373a08 RCX: 0000000000080000
RDX: ffffc9000f8de000 RSI: 000000000000191a RDI: 000000000000191b
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1ed4f17 R12: dffffc0000000000
R13: 1ffff1100826e741 R14: ffff8880413739c0 R15: ffff888041373ad0
FS:  00007f25ec6a56c0(0000) GS:ffff888126432000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f000ff8 CR3: 0000000036574000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 inode_inc_link_count include/linux/fs.h:2247 [inline]
 minix_mkdir+0x44/0x120 fs/minix/namei.c:117
 vfs_mkdir+0x40b/0x630 fs/namei.c:5239
 ovl_do_mkdir fs/overlayfs/overlayfs.h:257 [inline]
 ovl_workdir_create+0x4d7/0x940 fs/overlayfs/super.c:345
 ovl_make_workdir fs/overlayfs/super.c:682 [inline]
 ovl_get_workdir fs/overlayfs/super.c:840 [inline]
 ovl_fill_super_creds fs/overlayfs/super.c:1453 [inline]
 ovl_fill_super+0x1a56/0x5e40 fs/overlayfs/super.c:1564
 vfs_get_super fs/super.c:1327 [inline]
 get_tree_nodev+0xbb/0x150 fs/super.c:1346
 vfs_get_tree+0x92/0x2a0 fs/super.c:1754
 fc_mount fs/namespace.c:1193 [inline]
 do_new_mount_fc fs/namespace.c:3763 [inline]
 do_new_mount+0x341/0xd30 fs/namespace.c:3839
 do_mount fs/namespace.c:4172 [inline]
 __do_sys_mount fs/namespace.c:4361 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4338
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f25ee46c819
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:00007f25ec6a5028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f25ee6e6090 RCX: 00007f25ee46c819
RDX: 0000200000000b80 RSI: 0000200000000000 RDI: 0000000000000000
RBP: 00007f25ee502c91 R08: 0000200000000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f25ee6e6128 R14: 00007f25ee6e6090 R15: 00007ffe0ed8e558
 </TASK>