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
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 1 UID: 0 PID: 42 Comm: kworker/u8:3 Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
Workqueue: netns cleanup_net
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 add_chain_cache kernel/locking/lockdep.c:-1 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3855 [inline]
 validate_chain kernel/locking/lockdep.c:3876 [inline]
 __lock_acquire+0xf9c/0x30a4 kernel/locking/lockdep.c:5237
 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5868
 local_lock_acquire+0x3c/0x98 include/linux/local_lock_internal.h:38
 ___slab_alloc+0x1a8/0xf24 mm/slub.c:3768
 __slab_alloc+0x74/0xd0 mm/slub.c:3981
 __slab_alloc_node mm/slub.c:4056 [inline]
 slab_alloc_node mm/slub.c:4217 [inline]
 kmem_cache_alloc_noprof+0x2e0/0x3e8 mm/slub.c:4236
 kmem_alloc_batch lib/debugobjects.c:371 [inline]
 fill_pool+0x120/0x4e0 lib/debugobjects.c:403
 debug_objects_fill_pool+0x84/0xa0 lib/debugobjects.c:725
 debug_object_activate+0x48/0x460 lib/debugobjects.c:814
 debug_rcu_head_queue kernel/rcu/rcu.h:236 [inline]
 kvfree_call_rcu+0x4c/0x3f0 mm/slab_common.c:1953
 node_free net/ipv6/ip6_fib.c:203 [inline]
 fib6_repair_tree+0x98c/0xf20 net/ipv6/ip6_fib.c:1952
 fib6_del_route net/ipv6/ip6_fib.c:2039 [inline]
 fib6_del+0xbb8/0x11e4 net/ipv6/ip6_fib.c:2087
 fib6_clean_node+0x224/0x49c net/ipv6/ip6_fib.c:2249
 fib6_walk_continue+0x654/0x878 net/ipv6/ip6_fib.c:2171
 fib6_walk+0x140/0x254 net/ipv6/ip6_fib.c:2219
 fib6_clean_tree net/ipv6/ip6_fib.c:2299 [inline]
 __fib6_clean_all+0x1dc/0x310 net/ipv6/ip6_fib.c:2315
 fib6_clean_all+0x3c/0x50 net/ipv6/ip6_fib.c:2326
 rt6_sync_down_dev net/ipv6/route.c:5005 [inline]
 rt6_disable_ip+0x104/0x6cc net/ipv6/route.c:5010
 addrconf_ifdown+0x148/0x148c net/ipv6/addrconf.c:3853
 addrconf_notify+0x2f4/0xcdc net/ipv6/addrconf.c:-1
 notifier_call_chain+0x1b8/0x4e4 kernel/notifier.c:85
 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
 call_netdevice_notifiers_info net/core/dev.c:2229 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
 call_netdevice_notifiers net/core/dev.c:2281 [inline]
 netif_close_many+0x2d4/0x448 net/core/dev.c:1784
 unregister_netdevice_many_notify+0x4a8/0x1de0 net/core/dev.c:12110
 unregister_netdevice_many net/core/dev.c:12211 [inline]
 default_device_exit_batch+0x838/0x8b4 net/core/dev.c:12715
 ops_exit_list net/core/net_namespace.c:204 [inline]
 ops_undo_list+0x428/0x7ec net/core/net_namespace.c:251
 cleanup_net+0x3e4/0x6c0 net/core/net_namespace.c:682
 process_one_work+0x7e8/0x155c kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3400
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
veth1_macvtap: left promiscuous mode
veth0_macvtap: left promiscuous mode
veth1_vlan: left promiscuous mode
veth0_vlan: left promiscuous mode
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
team0 (unregistering): Port device team_slave_1 removed
team0 (unregistering): Port device team_slave_0 removed