------------[ cut here ]------------
WARNING: CPU: 0 PID: 7010 at fs/inode.c:474 inc_nlink+0x122/0x150 fs/inode.c:474
Modules linked in:
CPU: 0 UID: 0 PID: 7010 Comm: syz.5.135 Not tainted 6.15.0-syzkaller-03645-g3d413f0cfd7e #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:inc_nlink+0x122/0x150 fs/inode.c:474
Code: e8 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 c9 47 e8 ff e9 3f ff ff ff e8 df 8c 87 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:ffffc9000b57f348 EFLAGS: 00010283
RAX: ffffffff82386d01 RBX: ffff88805b8469e0 RCX: 0000000000080000
RDX: ffffc900045c1000 RSI: 00000000000016b9 RDI: 00000000000016ba
RBP: 0000000000000000 R08: ffffffff8f7ebfb7 R09: 1ffffffff1efd7f6
R10: dffffc0000000000 R11: fffffbfff1efd7f7 R12: dffffc0000000000
R13: 1ffff1100b708d3c R14: ffff88805b846998 R15: ffff88805b846a68
FS:  00007f2a9e12c6c0(0000) GS:ffff8881260c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32a1fffc CR3: 000000006665e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 jfs_mkdir+0x7e0/0xa70 fs/jfs/namei.c:286
 vfs_mkdir+0x306/0x510 fs/namei.c:4366
 ovl_do_mkdir fs/overlayfs/overlayfs.h:249 [inline]
 ovl_workdir_create+0x48f/0x860 fs/overlayfs/super.c:330
 ovl_make_workdir fs/overlayfs/super.c:669 [inline]
 ovl_get_workdir+0x32c/0x1730 fs/overlayfs/super.c:827
 ovl_fill_super+0x1386/0x35d0 fs/overlayfs/super.c:1406
 vfs_get_super fs/super.c:1330 [inline]
 get_tree_nodev+0xb8/0x150 fs/super.c:1349
 vfs_get_tree+0x8f/0x2b0 fs/super.c:1809
 do_new_mount+0x24a/0xa40 fs/namespace.c:3882
 do_mount fs/namespace.c:4222 [inline]
 __do_sys_mount fs/namespace.c:4433 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4410
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2a9d38e969
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:00007f2a9e12c038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2a9d5b6080 RCX: 00007f2a9d38e969
RDX: 0000200000000200 RSI: 00002000000003c0 RDI: 0000000000000000
RBP: 00007f2a9d410ab1 R08: 0000200000001100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2a9d5b6080 R15: 00007fffad4862b8
 </TASK>