[ 45.281024][ T719] eth3: renamed from tmp [ 46.280844][ T726] eth2: renamed from tmp [ 47.699479][ T736] eth0: renamed from tmp [ 48.114652][ T739] br0: port 1(eth0) entered blocking state [ 48.115228][ T739] br0: port 1(eth0) entered disabled state [ 48.115489][ T739] eth0: entered allmulticast mode [ 48.116728][ T739] eth0: entered promiscuous mode [ 48.118482][ T739] br0: port 1(eth0) entered blocking state [ 48.118798][ T739] br0: port 1(eth0) entered forwarding state [ 48.696563][ T743] eth1: renamed from tmp [ 49.118129][ T746] br0: port 2(eth1) entered blocking state [ 49.118374][ T746] br0: port 2(eth1) entered disabled state [ 49.118604][ T746] eth1: entered allmulticast mode [ 49.119757][ T746] eth1: entered promiscuous mode [ 49.120690][ T746] br0: port 2(eth1) entered blocking state [ 49.120911][ T746] br0: port 2(eth1) entered forwarding state [ 53.668001][ T11] br0: port 1(eth0) entered disabled state [ 53.808902][ T11] eth0 (unregistering): left allmulticast mode [ 53.809231][ T11] eth0 (unregistering): left promiscuous mode [ 53.809426][ T11] br0: port 1(eth0) entered disabled state [ 53.810707][ T11] [ 53.810800][ T11] ============================================ [ 53.810976][ T11] WARNING: possible recursive locking detected [ 53.811154][ T11] 6.13.0-rc5-virtme #1 Not tainted [ 53.811295][ T11] -------------------------------------------- [ 53.811469][ T11] kworker/u16:0/11 is trying to acquire lock: [ 53.811640][ T11] ffffffffaf7f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 53.811932][ T11] [ 53.811932][ T11] but task is already holding lock: [ 53.812134][ T11] ffffffffaf7f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 53.812419][ T11] [ 53.812419][ T11] other info that might help us debug this: [ 53.812622][ T11] Possible unsafe locking scenario: [ 53.812622][ T11] [ 53.812825][ T11] CPU0 [ 53.812930][ T11] ---- [ 53.813035][ T11] lock((netdev_chain).rwsem); [ 53.813176][ T11] lock((netdev_chain).rwsem); [ 53.813315][ T11] [ 53.813315][ T11] *** DEADLOCK *** [ 53.813315][ T11] [ 53.813522][ T11] May be due to missing lock nesting notation [ 53.813522][ T11] [ 53.813735][ T11] 5 locks held by kworker/u16:0/11: [ 53.813875][ T11] #0: ffff8880010b5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0 [ 53.814164][ T11] #1: ffffc900000b7da0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0 [ 53.814416][ T11] #2: ffffffffaf7ec4d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbc/0xba0 [ 53.814671][ T11] #3: ffffffffaf807e88 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x81/0x2e0 [ 53.814956][ T11] #4: ffffffffaf7f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 53.815244][ T11] [ 53.815244][ T11] stack backtrace: [ 53.815417][ T11] CPU: 1 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.13.0-rc5-virtme #1 [ 53.815663][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 53.815841][ T11] Workqueue: netns cleanup_net [ 53.815989][ T11] Call Trace: [ 53.816096][ T11] [ 53.816170][ T11] dump_stack_lvl+0x82/0xd0 [ 53.816319][ T11] print_deadlock_bug+0x40a/0x650 [ 53.816463][ T11] validate_chain+0x5bf/0xae0 [ 53.816606][ T11] ? __pfx_validate_chain+0x10/0x10 [ 53.816750][ T11] ? hlock_class+0x4e/0x130 [ 53.816893][ T11] ? mark_lock+0x38/0x3e0 [ 53.817001][ T11] __lock_acquire+0xb9a/0x1680 [ 53.817146][ T11] lock_acquire.part.0+0xeb/0x330 [ 53.817287][ T11] ? blocking_notifier_call_chain+0x50/0x90 [ 53.817470][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 53.817617][ T11] ? trace_lock_acquire+0x14c/0x1f0 [ 53.817758][ T11] ? lock_acquire+0x32/0xc0 [ 53.817898][ T11] ? blocking_notifier_call_chain+0x50/0x90 [ 53.818079][ T11] down_read+0x9f/0x340 [ 53.818186][ T11] ? blocking_notifier_call_chain+0x50/0x90 [ 53.818360][ T11] ? __pfx_down_read+0x10/0x10 [ 53.818501][ T11] ? __pfx___lock_release+0x10/0x10 [ 53.818648][ T11] blocking_notifier_call_chain+0x50/0x90 [ 53.818790][ T11] __netdev_upper_dev_unlink+0xd9/0x220 [ 53.818932][ T11] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 53.819106][ T11] ? find_held_lock+0x2c/0x110 [ 53.819247][ T11] ? del_nbp+0x377/0xbe0 [ 53.819356][ T11] ? hlock_class+0x4e/0x130 [ 53.819496][ T11] netdev_upper_dev_unlink+0x71/0xa0 [ 53.819640][ T11] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 53.819815][ T11] ? mutex_is_locked+0x12/0x60 [ 53.819955][ T11] ? rtnl_is_locked+0x15/0x20 [ 53.820095][ T11] del_nbp+0x602/0xbe0 [ 53.820204][ T11] br_del_if+0xa3/0x1f0 [ 53.820312][ T11] br_device_event+0x53d/0x800 [ 53.820453][ T11] ? __pfx_br_device_event+0x10/0x10 [ 53.820593][ T11] ? packet_notifier+0x3b0/0x810 [ 53.820738][ T11] notifier_call_chain+0xcd/0x150 [ 53.820880][ T11] blocking_notifier_call_chain+0x66/0x90 [ 53.821021][ T11] unregister_netdevice_many_notify+0xa83/0x1580 [ 53.821199][ T11] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 53.821375][ T11] ? default_device_exit_batch+0x81/0x2e0 [ 53.821517][ T11] ? rtnl_is_locked+0x15/0x20 [ 53.821657][ T11] ? unregister_netdevice_queue+0x70/0x410 [ 53.821833][ T11] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 53.822009][ T11] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 53.822184][ T11] default_device_exit_batch+0x241/0x2e0 [ 53.822324][ T11] ? __pfx_default_device_exit_batch+0x10/0x10 [ 53.822499][ T11] ? ops_exit_list+0xb4/0x170 [ 53.822641][ T11] cleanup_net+0x4ef/0xba0 [ 53.822784][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 53.822925][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 53.823068][ T11] ? trace_lock_acquire+0x14c/0x1f0 [ 53.823210][ T11] ? lock_acquire+0x32/0xc0 [ 53.823351][ T11] ? process_one_work+0xe0b/0x16d0 [ 53.823492][ T11] process_one_work+0xe55/0x16d0 [ 53.823637][ T11] ? __pfx___lock_release+0x10/0x10 [ 53.823789][ T11] ? __pfx_process_one_work+0x10/0x10 [ 53.823930][ T11] ? assign_work+0x16c/0x240 [ 53.824073][ T11] worker_thread+0x58c/0xce0 [ 53.824217][ T11] ? __pfx_worker_thread+0x10/0x10 [ 53.824358][ T11] kthread+0x28a/0x350 [ 53.824466][ T11] ? __pfx_kthread+0x10/0x10 [ 53.824607][ T11] ret_from_fork+0x31/0x70 [ 53.824749][ T11] ? __pfx_kthread+0x10/0x10 [ 53.824894][ T11] ret_from_fork_asm+0x1a/0x30 [ 53.825039][ T11] [ 54.154203][ T11] eth1: left allmulticast mode [ 54.154400][ T11] eth1: left promiscuous mode [ 54.154646][ T11] br0: port 2(eth1) entered disabled state [ 57.777974][ T822] eth1: renamed from tmp [ 58.752225][ T831] eth2: renamed from tmp