BUG: MAX_LOCKDEP_KEYS too low!
turning off the locking correctness validator.
CPU: 3 UID: 0 PID: 1142 Comm: kworker/u32:5 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 __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
 touch_wq_lockdep_map+0xad/0x1c0 kernel/workqueue.c:3907
 __flush_workqueue+0x128/0x1230 kernel/workqueue.c:3949
 ieee80211_stop_device+0xad/0x110 net/mac80211/util.c:1571
 ieee80211_do_stop+0x1ac8/0x2520 net/mac80211/iface.c:721
 ieee80211_stop+0x169/0x320 net/mac80211/iface.c:814
 __dev_close_many+0x29b/0x760 net/core/dev.c:1755
 netif_close_many+0x233/0x630 net/core/dev.c:1780
 netif_close net/core/dev.c:1797 [inline]
 netif_close+0x17f/0x230 net/core/dev.c:1791
 dev_close+0xaa/0x240 net/core/dev_api.c:220
 cfg80211_shutdown_all_interfaces+0x9a/0x220 net/wireless/core.c:277
 ieee80211_remove_interfaces+0xc3/0x740 net/mac80211/iface.c:2364
 ieee80211_unregister_hw+0x55/0x3a0 net/mac80211/main.c:1664
 mac80211_hwsim_del_radio drivers/net/wireless/virtual/mac80211_hwsim.c:5674 [inline]
 hwsim_exit_net+0x3ac/0x7d0 drivers/net/wireless/virtual/mac80211_hwsim.c:6554
 ops_exit_list net/core/net_namespace.c:198 [inline]
 ops_undo_list+0x2eb/0xab0 net/core/net_namespace.c:251
 cleanup_net+0x408/0x890 net/core/net_namespace.c:682
 process_one_work+0x9cf/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+0x5d7/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
hsr_slave_0: left promiscuous mode
hsr_slave_1: left promiscuous mode
batman_adv: batadv0: Interface deactivated: batadv_slave_0
batman_adv: batadv0: Removing interface: batadv_slave_0
batman_adv: batadv0: Interface deactivated: batadv_slave_1
batman_adv: batadv0: Removing interface: batadv_slave_1
veth1_macvtap: left promiscuous mode
veth0_macvtap: left promiscuous mode
veth1_vlan: left promiscuous mode
veth0_vlan: left promiscuous mode
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed
wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50