overlayfs: fs on './file0' does not support file handles, falling back to index=off,nfs_export=off.
BUG: MAX_LOCKDEP_ENTRIES too low!
turning off the locking correctness validator.
CPU: 1 PID: 15300 Comm: syz-executor.3 Not tainted 5.12.0-rc8-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 alloc_list_entry kernel/locking/lockdep.c:1353 [inline]
 add_lock_to_list.constprop.0.cold+0x11/0x18 kernel/locking/lockdep.c:1374
 check_prev_add kernel/locking/lockdep.c:3007 [inline]
 check_prevs_add kernel/locking/lockdep.c:3060 [inline]
 validate_chain kernel/locking/lockdep.c:3675 [inline]
 __lock_acquire+0x2f37/0x54c0 kernel/locking/lockdep.c:4901
 lock_acquire kernel/locking/lockdep.c:5511 [inline]
 lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5476
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
 spin_lock include/linux/spinlock.h:354 [inline]
 configfs_dirent_is_ready fs/configfs/dir.c:348 [inline]
 configfs_lookup+0x70/0x740 fs/configfs/dir.c:470
 __lookup_slow+0x24c/0x480 fs/namei.c:1630
 lookup_slow fs/namei.c:1647 [inline]
 lookup_one_len_unlocked+0x120/0x140 fs/namei.c:2680
 ovl_lookup_positive_unlocked fs/overlayfs/namei.c:205 [inline]
 ovl_lookup_single+0x66/0xb60 fs/overlayfs/namei.c:230
 ovl_lookup_layer+0x3d3/0x480 fs/overlayfs/namei.c:314
 ovl_lookup+0xca4/0x1bf0 fs/overlayfs/namei.c:914
 __lookup_hash+0x117/0x180 fs/namei.c:1531
 filename_create+0x186/0x490 fs/namei.c:3599
 user_path_create fs/namei.c:3656 [inline]
 do_mkdirat+0xa0/0x310 fs/namei.c:3834
 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
 __do_fast_syscall_32+0x56/0x90 arch/x86/entry/common.c:140
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:165
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7fe3549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f55bc5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000027
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 0000000000000088
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000