BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 21787 Comm: syz.7.1743 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 register_lock_class+0x2dc/0x320 kernel/locking/lockdep.c:1332
 __lock_acquire+0xae/0x2cf0 kernel/locking/lockdep.c:5112
 lock_acquire+0x117/0x340 kernel/locking/lockdep.c:5868
 touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:3940
 __flush_workqueue+0x121/0x14b0 kernel/workqueue.c:3982
 drain_workqueue+0xd3/0x390 kernel/workqueue.c:4146
 destroy_workqueue+0xbb/0xc60 kernel/workqueue.c:5903
 btrfs_stop_all_workers+0xf4/0x260 fs/btrfs/disk-io.c:1770
 open_ctree+0x1444/0x3d20 fs/btrfs/disk-io.c:3662
 btrfs_fill_super fs/btrfs/super.c:983 [inline]
 btrfs_get_tree_super fs/btrfs/super.c:1946 [inline]
 btrfs_get_tree_subvol fs/btrfs/super.c:2089 [inline]
 btrfs_get_tree+0x1061/0x1920 fs/btrfs/super.c:2123
 vfs_get_tree+0x92/0x2a0 fs/super.c:1751
 fc_mount fs/namespace.c:1199 [inline]
 do_new_mount_fc fs/namespace.c:3636 [inline]
 do_new_mount+0x302/0xa10 fs/namespace.c:3712
 do_mount fs/namespace.c:4035 [inline]
 __do_sys_mount fs/namespace.c:4224 [inline]
 __se_sys_mount+0x313/0x410 fs/namespace.c:4201
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6cd28d0eea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f6cd0b35e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6cd0b35ef0 RCX: 00007f6cd28d0eea
RDX: 00002000000055c0 RSI: 0000200000005600 RDI: 00007f6cd0b35eb0
RBP: 00002000000055c0 R08: 00007f6cd0b35ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000005600
R13: 00007f6cd0b35eb0 R14: 00000000000055a2 R15: 0000200000005640
 </TASK>
BTRFS error (device loop7): open_ctree failed: -4