------------[ cut here ]------------
!(inode_state_read_once(inode) & I_LINKABLE)
WARNING: fs/inode.c:472 at inc_nlink+0x122/0x150 fs/inode.c:472, CPU#1: syz.2.109/6442
Modules linked in:
CPU: 1 UID: 0 PID: 6442 Comm: syz.2.109 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:inc_nlink+0x122/0x150 fs/inode.c:472
Code: eb 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 f9 2a eb ff e9 3f ff ff ff e8 3f 1c 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:ffffc90007e3fac8 EFLAGS: 00010287
RAX: ffffffff82405d51 RBX: ffff88805e0134d0 RCX: 0000000000080000
RDX: ffffc90010814000 RSI: 0000000000001aa9 RDI: 0000000000001aaa
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1f1209f R12: dffffc0000000000
R13: 1ffff1100bc0269a R14: ffff88805e013488 R15: ffff88805e013598
FS:  00007f027a58d6c0(0000) GS:ffff888126271000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f027236c000 CR3: 000000002ab06000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 jfs_mkdir+0x877/0xb00 fs/jfs/namei.c:287
 vfs_mkdir+0x40b/0x630 fs/namei.c:5261
 filename_mkdirat+0x289/0x520 fs/namei.c:5294
 __do_sys_mkdirat fs/namei.c:5315 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5312
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f027c35bcc7
Code: 00 66 90 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 db f7 ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 b8 02 01 00 00 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:00007f027a58ce58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f027a58cee0 RCX: 00007f027c35bcc7
RDX: 00000000000001ff RSI: 00002000000002c0 RDI: 00000000ffffff9c
RBP: 0000200000000000 R08: 0000200000000140 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 00002000000002c0
R13: 00007f027a58cea0 R14: 0000000000000000 R15: 0000000000000000
 </TASK>