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 BUG: MAX_LOCK_DEPTH too low! turning off the locking correctness validator. depth: 48 max: 48! 48 locks held by kworker/u8:4/60: #0: ffff88801bae6948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3238 [inline] #0: ffff88801bae6948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3346 #1: ffffc9000211fba0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3239 [inline] #1: ffffc9000211fba0 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3346 #2: ffffffff8f730f10 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xf7/0x820 net/core/net_namespace.c:669 #3: ffffffff8f73e048 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0xdc/0x890 net/core/dev.c:12820 #4: ffff8880421c2d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #4: ffff8880421c2d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #5: ffff88807851cd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #5: ffff88807851cd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #6: ffff888064270d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #6: ffff888064270d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #7: ffff888066f54d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #7: ffff888066f54d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #8: ffff888058320d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #8: ffff888058320d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #9: ffff88805829cd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #9: ffff88805829cd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #10: ffff888062f52d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #10: ffff888062f52d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #11: ffff888030c10d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #11: ffff888030c10d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #12: ffff888062a96d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #12: ffff888062a96d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #13: ffff8880338dcd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #13: ffff8880338dcd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #14: ffff8880372b4d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #14: ffff8880372b4d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #15: ffff88803eebcd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #15: ffff88803eebcd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #16: ffff88803df2ad40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #16: ffff88803df2ad40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #17: ffff88807904cd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #17: ffff88807904cd40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #18: ffff88805a7d4d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #18: ffff88805a7d4d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #19: ffff88807851ad40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #19: ffff88807851ad40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #20: ffff88805e04ad40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #20: ffff88805e04ad40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #21: ffff88808dc36d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #21: ffff88808dc36d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #22: ffff888060c58d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #22: ffff888060c58d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #23: ffff8880528d4d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #23: ffff8880528d4d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #24: ffff888076ff2d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #24: ffff888076ff2d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #25: ffff888065748d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #25: ffff888065748d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #26: ffff88804839ed40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #26: ffff88804839ed40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #27: ffff88807d63ed40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #27: ffff88807d63ed40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #28: ffff8880640a6d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #28: ffff8880640a6d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #29: ffff888022336d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #29: ffff888022336d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #30: ffff888032a7ad40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #30: ffff888032a7ad40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #31: ffff888068506d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #31: ffff888068506d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #32: ffff88806c190d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #32: ffff88806c190d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #33: ffff88805bb62d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #33: ffff88805bb62d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #34: ffff88805a196d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #34: ffff88805a196d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #35: ffff88805a394d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #35: ffff88805a394d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #36: ffff888063ee2d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #36: ffff888063ee2d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #37: ffff888030974d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #37: ffff888030974d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #38: ffff888065818d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #38: ffff888065818d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #39: ffff888061414d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #39: ffff888061414d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #40: ffff8880620f2d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #40: ffff8880620f2d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #41: ffff88804d596d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #41: ffff88804d596d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #42: ffff8880622d4d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: netdev_lock include/linux/netdevice.h:2768 [inline] #42: ffff8880622d4d40 (&dev_instance_lock_key#3){+.+.}-{4:4}, at: unregister_netdevice_many_notify+0x52f/0x1ff0 net/core/dev.c:12226 #43: ffffffff8e33d360 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #43: ffffffff8e33d360 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline] #43: ffffffff8e33d360 (rcu_read_lock){....}-{1:3}, at: __fib6_clean_all+0x9b/0x380 net/ipv6/ip6_fib.c:2310 #44: ffff888091e31430 (&tb->tb6_lock){+.-.}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:356 [inline] #44: ffff888091e31430 (&tb->tb6_lock){+.-.}-{3:3}, at: __fib6_clean_all+0x1ce/0x380 net/ipv6/ip6_fib.c:2314 #45: ffffffff8e33d360 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #45: ffffffff8e33d360 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:867 [inline] #45: ffffffff8e33d360 (rcu_read_lock){....}-{1:3}, at: inet6_rt_notify+0xaf/0x470 net/ipv6/route.c:6342 #46: ffff88801cefba98 (&n->list_lock){-.-.}-{3:3}, at: get_partial_node+0x4e/0x4a0 mm/slub.c:3463 #47: ffff8880b8742a40 ((local_lock_t *)&c->lock){..-.}-{3:3}, at: local_trylock_acquire include/linux/local_lock_internal.h:48 [inline] #47: ffff8880b8742a40 ((local_lock_t *)&c->lock){..-.}-{3:3}, at: put_cpu_partial+0xb2/0x2e0 mm/slub.c:3888 INFO: lockdep is turned off. CPU: 1 UID: 0 PID: 60 Comm: kworker/u8:4 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_lvl+0x189/0x250 lib/dump_stack.c:120 __lock_acquire+0xca0/0xd20 kernel/locking/lockdep.c:5260 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868 local_trylock_acquire include/linux/local_lock_internal.h:48 [inline] put_cpu_partial+0xcd/0x2e0 mm/slub.c:3888 get_partial_node+0x197/0x4a0 mm/slub.c:3491 get_partial mm/slub.c:3579 [inline] ___slab_alloc+0xdea/0x1920 mm/slub.c:4601 __slab_alloc+0x65/0x100 mm/slub.c:4745 __slab_alloc_node mm/slub.c:4821 [inline] slab_alloc_node mm/slub.c:5232 [inline] kmem_cache_alloc_node_noprof+0x4c5/0x710 mm/slub.c:5296 __alloc_skb+0x112/0x2d0 net/core/skbuff.c:660 alloc_skb include/linux/skbuff.h:1383 [inline] nlmsg_new include/net/netlink.h:1055 [inline] inet6_rt_notify+0x170/0x470 net/ipv6/route.c:6345 fib6_del_route net/ipv6/ip6_fib.c:2052 [inline] fib6_del+0x1094/0x1550 net/ipv6/ip6_fib.c:2087 fib6_clean_node+0x29f/0x590 net/ipv6/ip6_fib.c:2249 fib6_walk_continue+0x67b/0x910 net/ipv6/ip6_fib.c:2171 fib6_walk+0x149/0x290 net/ipv6/ip6_fib.c:2219 fib6_clean_tree net/ipv6/ip6_fib.c:2299 [inline] __fib6_clean_all+0x234/0x380 net/ipv6/ip6_fib.c:2315 rt6_sync_down_dev net/ipv6/route.c:5003 [inline] rt6_disable_ip+0x121/0x7d0 net/ipv6/route.c:5008 addrconf_ifdown+0x15d/0x1880 net/ipv6/addrconf.c:3853 addrconf_notify+0x1bc/0x1010 net/ipv6/addrconf.c:-1 notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline] call_netdevice_notifiers net/core/dev.c:2281 [inline] netif_close_many+0x29c/0x410 net/core/dev.c:1784 unregister_netdevice_many_notify+0x5a7/0x1ff0 net/core/dev.c:12229 unregister_netdevice_many net/core/dev.c:12330 [inline] default_device_exit_batch+0x819/0x890 net/core/dev.c:12834 ops_exit_list net/core/net_namespace.c:205 [inline] ops_undo_list+0x525/0x990 net/core/net_namespace.c:252 cleanup_net+0x4d8/0x820 net/core/net_namespace.c:695 process_one_work kernel/workqueue.c:3263 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 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 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 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 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 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 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 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 team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed team_slave_1 (unregistering): left promiscuous mode team_slave_1 (unregistering): left allmulticast mode team0 (unregistering): Port device team_slave_1 removed team_slave_0 (unregistering): left promiscuous mode team_slave_0 (unregistering): left allmulticast mode team0 (unregistering): Port device team_slave_0 removed 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 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 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 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