BUG: MAX_LOCKDEP_KEYS too low! turning off the locking correctness validator. CPU: 0 UID: 0 PID: 2207 Comm: kworker/u8:6 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Workqueue: netns cleanup_net Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 register_lock_class+0x419/0x4c0 kernel/locking/lockdep.c:1332 __lock_acquire+0x9f/0x1ce0 kernel/locking/lockdep.c:5112 lock_acquire kernel/locking/lockdep.c:5868 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5825 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] dev_reset_queue+0xa9/0x1d0 net/sched/sch_generic.c:1312 netdev_for_each_tx_queue include/linux/netdevice.h:2660 [inline] dev_deactivate_many+0x4e5/0xd50 net/sched/sch_generic.c:1378 __dev_close_many+0x150/0x760 net/core/dev.c:1739 netif_close_many+0x233/0x630 net/core/dev.c:1780 unregister_netdevice_many_notify+0x563/0x24c0 net/core/dev.c:12136 ops_exit_rtnl_list net/core/net_namespace.c:186 [inline] ops_undo_list+0x8fc/0xab0 net/core/net_namespace.c:247 cleanup_net+0x408/0x890 net/core/net_namespace.c:682 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c2/0x780 kernel/kthread.c:463 ret_from_fork+0x56a/0x730 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245