------------[ cut here ]------------
WARNING: CPU: 1 PID: 6976 at fs/inode.c:474 inc_nlink+0x120/0x170 fs/inode.c:474
Modules linked in:
CPU: 1 UID: 0 PID: 6976 Comm: syz.2.69 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : inc_nlink+0x120/0x170 fs/inode.c:474
lr : inc_nlink+0x120/0x170 fs/inode.c:474
sp : ffff8000a4f57020
x29: ffff8000a4f57020 x28: ffff7000149eae14 x27: dfff800000000000
x26: 1ffff00011fbeb68 x25: 0000000000000000 x24: ffff80008fdf5000
x23: 1fffe0001ebc3404 x22: dfff800000000000 x21: 0000000000002038
x20: ffff0000f5e19fd8 x19: ffff0000f5e1a020 x18: 00000000ffffffff
x17: ffff800093524000 x16: ffff80008b0155d8 x15: 0000000000000001
x14: 1fffe0001ebf1259 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 000000000000b609 x9 : ffff8000a68cf000
x8 : 000000000000b60a x7 : ffff800081c1e4d4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : ffff8000a4f56e28 x3 : ffff800081bbd220
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 inc_nlink+0x120/0x170 fs/inode.c:474 (P)
 jfs_mkdir+0x664/0x8b4 fs/jfs/namei.c:286
 vfs_mkdir+0x284/0x424 fs/namei.c:4366
 ovl_do_mkdir fs/overlayfs/overlayfs.h:251 [inline]
 ovl_workdir_create+0x3a0/0x6f4 fs/overlayfs/super.c:330
 ovl_make_workdir fs/overlayfs/super.c:669 [inline]
 ovl_get_workdir+0x2bc/0x1280 fs/overlayfs/super.c:827
 ovl_fill_super+0xff4/0x2c38 fs/overlayfs/super.c:1406
 vfs_get_super fs/super.c:1325 [inline]
 get_tree_nodev+0xb4/0x144 fs/super.c:1344
 ovl_get_tree+0x28/0x38 fs/overlayfs/params.c:699
 vfs_get_tree+0x90/0x28c fs/super.c:1815
 do_new_mount+0x278/0x7f4 fs/namespace.c:3808
 path_mount+0x5b4/0xde0 fs/namespace.c:4123
 do_mount fs/namespace.c:4136 [inline]
 __do_sys_mount fs/namespace.c:4347 [inline]
 __se_sys_mount fs/namespace.c:4324 [inline]
 __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4324
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 646756
hardirqs last  enabled at (646755): [<ffff800080c6f95c>] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234
hardirqs last disabled at (646756): [<ffff80008b00e86c>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434
softirqs last  enabled at (646444): [<ffff800080201608>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (646442): [<ffff8000802015d4>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---
overlayfs: upper fs needs to support d_type.
overlayfs: upper fs does not support tmpfile.
overlayfs: upper fs does not support RENAME_WHITEOUT.
ERROR: (device loop2): dbAlloc: the hint is outside the map

overlayfs: failed to set uuid (/file0, err=-5); falling back to uuid=null.
ERROR: (device loop2): dbAlloc: the hint is outside the map

overlayfs: failed to verify upper root origin