BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 0 PID: 29244 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-00260-gfa4b851b4ad6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 register_lock_class+0x822/0x980 kernel/locking/lockdep.c:1321
 __lock_acquire+0xd9/0x1fd0 kernel/locking/lockdep.c:5014
 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
 __flush_workqueue+0x174/0x1630 kernel/workqueue.c:3146
 drain_workqueue+0xc9/0x390 kernel/workqueue.c:3311
 destroy_workqueue+0xbe/0xc50 kernel/workqueue.c:4793
 btrfs_destroy_workqueue+0x45/0x240 fs/btrfs/async-thread.c:361
 btrfs_stop_all_workers+0x1f2/0x2a0 fs/btrfs/disk-io.c:1796
 close_ctree+0x664/0xd40 fs/btrfs/disk-io.c:4368
 open_ctree+0x27d6/0x2a00
 btrfs_fill_super fs/btrfs/super.c:940 [inline]
 btrfs_get_tree_super fs/btrfs/super.c:1860 [inline]
 btrfs_get_tree+0xe7a/0x1920 fs/btrfs/super.c:2086
 vfs_get_tree+0x90/0x2a0 fs/super.c:1779
 fc_mount+0x1b/0xb0 fs/namespace.c:1125
 btrfs_get_tree_subvol fs/btrfs/super.c:2049 [inline]
 btrfs_get_tree+0x652/0x1920 fs/btrfs/super.c:2087
 vfs_get_tree+0x90/0x2a0 fs/super.c:1779
 do_new_mount+0x2be/0xb40 fs/namespace.c:3352
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3875
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7efdf927f4aa
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efdf9facef8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007efdf9facf80 RCX: 00007efdf927f4aa
RDX: 00000000200051c0 RSI: 0000000020005200 RDI: 00007efdf9facf40
RBP: 00000000200051c0 R08: 00007efdf9facf80 R09: 0000000001000008
R10: 0000000001000008 R11: 0000000000000202 R12: 0000000020005200
R13: 00007efdf9facf40 R14: 00000000000051ab R15: 0000000020000280
 </TASK>
BTRFS error (device loop2): open_ctree failed