BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 1 PID: 5199 Comm: kworker/u4:16 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: netns cleanup_net
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack+0x30/0x40 lib/dump_stack.c:88
 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106
 dump_stack+0x1c/0x5c lib/dump_stack.c:113
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3772 [inline]
 validate_chain kernel/locking/lockdep.c:3793 [inline]
 __lock_acquire+0x1b40/0x6544 kernel/locking/lockdep.c:5049
 lock_acquire+0x20c/0x644 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x6c/0xb4 kernel/locking/spinlock.c:162
 debug_object_activate+0x7c/0x468 lib/debugobjects.c:698
 debug_rcu_head_queue kernel/rcu/rcu.h:190 [inline]
 kvfree_call_rcu+0x5c/0x6f0 kernel/rcu/tree.c:3396
 __hw_addr_del_entry net/core/dev_addr_lists.c:161 [inline]
 __hw_addr_del_ex+0x344/0x428 net/core/dev_addr_lists.c:200
 __dev_mc_del net/core/dev_addr_lists.c:908 [inline]
 dev_mc_del+0x88/0xfc net/core/dev_addr_lists.c:926
 ip_mc_filter_del net/ipv4/igmp.c:1168 [inline]
 __igmp_group_dropped+0x180/0x658 net/ipv4/igmp.c:1301
 igmp_group_dropped net/ipv4/igmp.c:1332 [inline]
 ip_mc_down+0x130/0x3b8 net/ipv4/igmp.c:1741
 inetdev_event+0x228/0x12ec net/ipv4/devinet.c:1601
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:2001 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2039 [inline]
 call_netdevice_notifiers net/core/dev.c:2053 [inline]
 dev_close_many+0x2cc/0x440 net/core/dev.c:1601
 unregister_netdevice_many+0x3c4/0x1740 net/core/dev.c:10964
 unregister_netdevice_queue+0x2ac/0x2f8 net/core/dev.c:10921
 unregister_netdevice include/linux/netdevice.h:3075 [inline]
 nsim_destroy+0x58/0x164 drivers/net/netdevsim/netdev.c:382
 __nsim_dev_port_del+0x144/0x1a4 drivers/net/netdevsim/dev.c:1433
 nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1445 [inline]
 nsim_dev_reload_destroy+0x240/0x43c drivers/net/netdevsim/dev.c:1662
 nsim_dev_reload_down+0x9c/0xd4 drivers/net/netdevsim/dev.c:968
 devlink_reload+0x1b4/0x570 net/devlink/leftover.c:4472
 devlink_pernet_pre_exit+0x118/0x2a8 net/devlink/leftover.c:12501
 ops_pre_exit_list net/core/net_namespace.c:162 [inline]
 cleanup_net+0x470/0xa74 net/core/net_namespace.c:620
 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292
 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850
netdevsim netdevsim7 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim7 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim7 netdevsim1 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim7 netdevsim0 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
device hsr_slave_0 left promiscuous mode
device 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
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
device veth1_macvtap left promiscuous mode
device veth0_macvtap left promiscuous mode
device veth1_vlan left promiscuous mode
device veth0_vlan left promiscuous mode
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed
bond0 (unregistering): (slave bond_slave_1): Releasing backup interface
bond0 (unregistering): (slave bond_slave_0): Releasing backup interface
bond0 (unregistering): Released all slaves
netdevsim netdevsim8 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0
netdevsim netdevsim8 netdevsim2 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0