[ 47.751700][ T812] veth0: renamed from veth-hv-1 [ 48.516785][ T828] br0: port 1(vxlan0) entered blocking state [ 48.517188][ T828] br0: port 1(vxlan0) entered disabled state [ 48.517643][ T828] vxlan0: entered allmulticast mode [ 48.518959][ T828] vxlan0: entered promiscuous mode [ 48.596460][ T829] br0: port 1(vxlan0) entered blocking state [ 48.596966][ T829] br0: port 1(vxlan0) entered forwarding state [ 48.762163][ T831] veth0: renamed from veth-hv-2 [ 49.376382][ T839] br0: port 1(vxlan0) entered blocking state [ 49.376660][ T839] br0: port 1(vxlan0) entered disabled state [ 49.376914][ T839] vxlan0: entered allmulticast mode [ 49.378092][ T839] vxlan0: entered promiscuous mode [ 49.460620][ T840] br0: port 1(vxlan0) entered blocking state [ 49.460973][ T840] br0: port 1(vxlan0) entered forwarding state [ 49.868682][ T846] br0: port 2(veth-tap) entered blocking state [ 49.868922][ T846] br0: port 2(veth-tap) entered disabled state [ 49.869161][ T846] veth-tap: entered allmulticast mode [ 49.870340][ T846] veth-tap: entered promiscuous mode [ 50.285231][ T39] br0: port 2(veth-tap) entered blocking state [ 50.285809][ T39] br0: port 2(veth-tap) entered forwarding state [ 50.580371][ T856] br0: port 2(veth-tap) entered blocking state [ 50.580617][ T856] br0: port 2(veth-tap) entered disabled state [ 50.580853][ T856] veth-tap: entered allmulticast mode [ 50.582019][ T856] veth-tap: entered promiscuous mode [ 50.987098][ T37] br0: port 2(veth-tap) entered blocking state [ 50.987347][ T37] br0: port 2(veth-tap) entered forwarding state [ 51.453962][ T866] br0: port 1(vxlan0) entered disabled state [ 51.527622][ T867] br0: port 1(vxlan0) entered blocking state [ 51.528022][ T867] br0: port 1(vxlan0) entered forwarding state [ 51.723400][ T869] br0: port 1(vxlan0) entered disabled state [ 51.795307][ T870] br0: port 1(vxlan0) entered blocking state [ 51.795574][ T870] br0: port 1(vxlan0) entered forwarding state [ 52.485080][ T67] veth-tap: left allmulticast mode [ 52.485403][ T67] veth-tap: left promiscuous mode [ 52.485694][ T67] br0: port 2(veth-tap) entered disabled state [ 52.488143][ T67] vxlan0: left allmulticast mode [ 52.488331][ T67] vxlan0: left promiscuous mode [ 52.488595][ T67] br0: port 1(vxlan0) entered disabled state [ 52.843588][ T67] [ 52.843764][ T67] ============================================ [ 52.843935][ T67] WARNING: possible recursive locking detected [ 52.844105][ T67] 6.13.0-rc5-virtme #1 Not tainted [ 52.844249][ T67] -------------------------------------------- [ 52.844425][ T67] kworker/u16:1/67 is trying to acquire lock: [ 52.844594][ T67] ffffffff895f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 52.844879][ T67] [ 52.844879][ T67] but task is already holding lock: [ 52.845077][ T67] ffffffff895f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 52.845359][ T67] [ 52.845359][ T67] other info that might help us debug this: [ 52.845563][ T67] Possible unsafe locking scenario: [ 52.845563][ T67] [ 52.845765][ T67] CPU0 [ 52.845870][ T67] ---- [ 52.845977][ T67] lock((netdev_chain).rwsem); [ 52.846116][ T67] lock((netdev_chain).rwsem); [ 52.846251][ T67] [ 52.846251][ T67] *** DEADLOCK *** [ 52.846251][ T67] [ 52.846449][ T67] May be due to missing lock nesting notation [ 52.846449][ T67] [ 52.846654][ T67] 5 locks held by kworker/u16:1/67: [ 52.846792][ T67] #0: ffff8880010b5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0 [ 52.847078][ T67] #1: ffffc90000487da0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0 [ 52.847336][ T67] #2: ffffffff895ec4d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbc/0xba0 [ 52.847590][ T67] #3: ffffffff89607e88 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x81/0x2e0 [ 52.847871][ T67] #4: ffffffff895f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 52.848149][ T67] [ 52.848149][ T67] stack backtrace: [ 52.848318][ T67] CPU: 0 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.13.0-rc5-virtme #1 [ 52.848568][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 52.848738][ T67] Workqueue: netns cleanup_net [ 52.848879][ T67] Call Trace: [ 52.848983][ T67] [ 52.849055][ T67] dump_stack_lvl+0x82/0xd0 [ 52.849200][ T67] print_deadlock_bug+0x40a/0x650 [ 52.849344][ T67] validate_chain+0x5bf/0xae0 [ 52.849487][ T67] ? __pfx_validate_chain+0x10/0x10 [ 52.849627][ T67] ? hlock_class+0x4e/0x130 [ 52.849765][ T67] ? mark_lock+0x38/0x3e0 [ 52.849872][ T67] __lock_acquire+0xb9a/0x1680 [ 52.850013][ T67] lock_acquire.part.0+0xeb/0x330 [ 52.850153][ T67] ? blocking_notifier_call_chain+0x50/0x90 [ 52.850326][ T67] ? __lock_acquire+0xb9a/0x1680 [ 52.850466][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 52.850608][ T67] ? trace_lock_acquire+0x14c/0x1f0 [ 52.850747][ T67] ? lock_acquire+0x32/0xc0 [ 52.850881][ T67] ? blocking_notifier_call_chain+0x50/0x90 [ 52.851051][ T67] down_read+0x9f/0x340 [ 52.851159][ T67] ? blocking_notifier_call_chain+0x50/0x90 [ 52.851327][ T67] ? __pfx_down_read+0x10/0x10 [ 52.851461][ T67] ? __lock_release+0x103/0x460 [ 52.851601][ T67] blocking_notifier_call_chain+0x50/0x90 [ 52.851737][ T67] __netdev_upper_dev_unlink+0xd9/0x220 [ 52.851875][ T67] ? mark_held_locks+0x9e/0xe0 [ 52.852011][ T67] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 52.852181][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 52.852350][ T67] ? __try_to_del_timer_sync+0xe7/0x140 [ 52.852494][ T67] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 52.852663][ T67] ? mark_held_locks+0x9e/0xe0 [ 52.852798][ T67] netdev_upper_dev_unlink+0x71/0xa0 [ 52.852934][ T67] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 52.853101][ T67] ? mutex_is_locked+0x1c/0x60 [ 52.853239][ T67] ? rtnl_is_locked+0x15/0x20 [ 52.853377][ T67] ? netdev_master_upper_dev_get+0x13/0x120 [ 52.853550][ T67] vrf_device_event+0x78/0xe0 [ 52.853688][ T67] notifier_call_chain+0xcd/0x150 [ 52.853828][ T67] blocking_notifier_call_chain+0x66/0x90 [ 52.853966][ T67] unregister_netdevice_many_notify+0xa83/0x1580 [ 52.854136][ T67] ? unregister_netdevice_queue+0x70/0x410 [ 52.854304][ T67] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 52.854475][ T67] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 52.854646][ T67] ? rtnl_is_locked+0x15/0x20 [ 52.854782][ T67] ? unregister_netdevice_queue+0x70/0x410 [ 52.854952][ T67] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 52.855119][ T67] ? vrf_dellink+0x100/0x150 [ 52.855262][ T67] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 52.855434][ T67] default_device_exit_batch+0x241/0x2e0 [ 52.855573][ T67] ? __pfx_default_device_exit_batch+0x10/0x10 [ 52.855742][ T67] ? ops_exit_list+0xb4/0x170 [ 52.855883][ T67] cleanup_net+0x4ef/0xba0 [ 52.856021][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 52.856160][ T67] ? __pfx_cleanup_net+0x10/0x10 [ 52.856297][ T67] ? trace_lock_acquire+0x14c/0x1f0 [ 52.856434][ T67] ? lock_acquire+0x32/0xc0 [ 52.856573][ T67] ? process_one_work+0xe0b/0x16d0 [ 52.856711][ T67] process_one_work+0xe55/0x16d0 [ 52.856845][ T67] ? __pfx___lock_release+0x10/0x10 [ 52.856982][ T67] ? __pfx_process_one_work+0x10/0x10 [ 52.857120][ T67] ? assign_work+0x16c/0x240 [ 52.857260][ T67] worker_thread+0x58c/0xce0 [ 52.857396][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 52.857570][ T67] ? __pfx_worker_thread+0x10/0x10 [ 52.857706][ T67] ? __pfx_worker_thread+0x10/0x10 [ 52.857842][ T67] kthread+0x28a/0x350 [ 52.857947][ T67] ? __pfx_kthread+0x10/0x10 [ 52.858083][ T67] ret_from_fork+0x31/0x70 [ 52.858222][ T67] ? __pfx_kthread+0x10/0x10 [ 52.858356][ T67] ret_from_fork_asm+0x1a/0x30 [ 52.858497][ T67] [ 52.869158][ T67] br0: port 1(vxlan0) entered disabled state [ 52.881606][ T67] vxlan0 (unregistering): left allmulticast mode [ 52.881796][ T67] vxlan0 (unregistering): left promiscuous mode [ 52.881971][ T67] br0: port 1(vxlan0) entered disabled state [ 52.930725][ T67] veth-tap: left allmulticast mode [ 52.930877][ T67] veth-tap: left promiscuous mode [ 52.931110][ T67] br0: port 2(veth-tap) entered disabled state