[ 10.672130][ T268] ip (268) used greatest stack depth: 23752 bytes left [ 11.404873][ T281] veth0: renamed from veth-hv-1 [ 12.280271][ T296] br0: port 1(vxlan0) entered blocking state [ 12.281167][ T296] br0: port 1(vxlan0) entered disabled state [ 12.281448][ T296] vxlan0: entered allmulticast mode [ 12.283021][ T296] vxlan0: entered promiscuous mode [ 12.361852][ T297] br0: port 1(vxlan0) entered blocking state [ 12.362295][ T297] br0: port 1(vxlan0) entered forwarding state [ 12.546951][ T299] veth0: renamed from veth-hv-2 [ 13.203447][ T307] br0: port 1(vxlan0) entered blocking state [ 13.203780][ T307] br0: port 1(vxlan0) entered disabled state [ 13.204022][ T307] vxlan0: entered allmulticast mode [ 13.205219][ T307] vxlan0: entered promiscuous mode [ 13.283977][ T308] br0: port 1(vxlan0) entered blocking state [ 13.284263][ T308] br0: port 1(vxlan0) entered forwarding state [ 13.717892][ T314] br0: port 2(veth-tap) entered blocking state [ 13.718212][ T314] br0: port 2(veth-tap) entered disabled state [ 13.718495][ T314] veth-tap: entered allmulticast mode [ 13.727453][ T314] veth-tap: entered promiscuous mode [ 14.156674][ T40] br0: port 2(veth-tap) entered blocking state [ 14.157353][ T40] br0: port 2(veth-tap) entered forwarding state [ 14.440978][ T325] br0: port 2(veth-tap) entered blocking state [ 14.441270][ T325] br0: port 2(veth-tap) entered disabled state [ 14.441941][ T325] veth-tap: entered allmulticast mode [ 14.443178][ T325] veth-tap: entered promiscuous mode [ 14.903131][ T37] br0: port 2(veth-tap) entered blocking state [ 14.903377][ T37] br0: port 2(veth-tap) entered forwarding state [ 15.396457][ T335] br0: port 1(vxlan0) entered disabled state [ 15.477921][ T336] br0: port 1(vxlan0) entered blocking state [ 15.478208][ T336] br0: port 1(vxlan0) entered forwarding state [ 15.649113][ T338] br0: port 1(vxlan0) entered disabled state [ 15.746522][ T339] br0: port 1(vxlan0) entered blocking state [ 15.746888][ T339] br0: port 1(vxlan0) entered forwarding state [ 16.482409][ T68] veth-tap: left allmulticast mode [ 16.482734][ T68] veth-tap: left promiscuous mode [ 16.483085][ T68] br0: port 2(veth-tap) entered disabled state [ 16.491602][ T68] vxlan0: left allmulticast mode [ 16.491807][ T68] vxlan0: left promiscuous mode [ 16.492095][ T68] br0: port 1(vxlan0) entered disabled state [ 16.791766][ T68] [ 16.791898][ T68] ============================================ [ 16.792092][ T68] WARNING: possible recursive locking detected [ 16.792291][ T68] 6.13.0-rc5-virtme #1 Not tainted [ 16.792452][ T68] -------------------------------------------- [ 16.792642][ T68] kworker/u16:1/68 is trying to acquire lock: [ 16.792834][ T68] ffffffffa37f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 16.793153][ T68] [ 16.793153][ T68] but task is already holding lock: [ 16.793381][ T68] ffffffffa37f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 16.793707][ T68] [ 16.793707][ T68] other info that might help us debug this: [ 16.793939][ T68] Possible unsafe locking scenario: [ 16.793939][ T68] [ 16.794166][ T68] CPU0 [ 16.794284][ T68] ---- [ 16.794399][ T68] lock((netdev_chain).rwsem); [ 16.794558][ T68] lock((netdev_chain).rwsem); [ 16.794714][ T68] [ 16.794714][ T68] *** DEADLOCK *** [ 16.794714][ T68] [ 16.794941][ T68] May be due to missing lock nesting notation [ 16.794941][ T68] [ 16.795168][ T68] 5 locks held by kworker/u16:1/68: [ 16.795327][ T68] #0: ffff8880010b5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0 [ 16.795649][ T68] #1: ffffc90000497da0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0 [ 16.795929][ T68] #2: ffffffffa37ec4d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbc/0xba0 [ 16.796211][ T68] #3: ffffffffa3807e88 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x81/0x2e0 [ 16.796551][ T68] #4: ffffffffa37f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 16.796870][ T68] [ 16.796870][ T68] stack backtrace: [ 16.797069][ T68] CPU: 3 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.13.0-rc5-virtme #1 [ 16.797345][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.797546][ T68] Workqueue: netns cleanup_net [ 16.797705][ T68] Call Trace: [ 16.797824][ T68] [ 16.797903][ T68] dump_stack_lvl+0x82/0xd0 [ 16.798061][ T68] print_deadlock_bug+0x40a/0x650 [ 16.798214][ T68] validate_chain+0x5bf/0xae0 [ 16.798367][ T68] ? __pfx_validate_chain+0x10/0x10 [ 16.798521][ T68] ? hlock_class+0x4e/0x130 [ 16.798676][ T68] ? mark_lock+0x38/0x3e0 [ 16.798799][ T68] __lock_acquire+0xb9a/0x1680 [ 16.798956][ T68] lock_acquire.part.0+0xeb/0x330 [ 16.799114][ T68] ? blocking_notifier_call_chain+0x50/0x90 [ 16.799304][ T68] ? __lock_acquire+0xb9a/0x1680 [ 16.799461][ T68] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 16.799616][ T68] ? trace_lock_acquire+0x14c/0x1f0 [ 16.799770][ T68] ? lock_acquire+0x32/0xc0 [ 16.799929][ T68] ? blocking_notifier_call_chain+0x50/0x90 [ 16.800122][ T68] down_read+0x9f/0x340 [ 16.800244][ T68] ? blocking_notifier_call_chain+0x50/0x90 [ 16.800439][ T68] ? __pfx_down_read+0x10/0x10 [ 16.800597][ T68] ? __lock_release+0x103/0x460 [ 16.800754][ T68] blocking_notifier_call_chain+0x50/0x90 [ 16.800914][ T68] __netdev_upper_dev_unlink+0xd9/0x220 [ 16.801077][ T68] ? mark_held_locks+0x9e/0xe0 [ 16.801234][ T68] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 16.801427][ T68] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 16.801623][ T68] ? __try_to_del_timer_sync+0xe7/0x140 [ 16.801794][ T68] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 16.801985][ T68] ? mark_held_locks+0x9e/0xe0 [ 16.802142][ T68] netdev_upper_dev_unlink+0x71/0xa0 [ 16.802301][ T68] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 16.802491][ T68] ? mutex_is_locked+0x1c/0x60 [ 16.802663][ T68] ? rtnl_is_locked+0x15/0x20 [ 16.802815][ T68] ? netdev_master_upper_dev_get+0x13/0x120 [ 16.803007][ T68] vrf_device_event+0x78/0xe0 [ 16.803166][ T68] notifier_call_chain+0xcd/0x150 [ 16.803324][ T68] blocking_notifier_call_chain+0x66/0x90 [ 16.803488][ T68] unregister_netdevice_many_notify+0xa83/0x1580 [ 16.803690][ T68] ? unregister_netdevice_queue+0x70/0x410 [ 16.803881][ T68] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 16.804076][ T68] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 16.804263][ T68] ? rtnl_is_locked+0x15/0x20 [ 16.804419][ T68] ? unregister_netdevice_queue+0x70/0x410 [ 16.804613][ T68] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 16.804801][ T68] ? vrf_dellink+0x100/0x150 [ 16.804958][ T68] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 16.805151][ T68] default_device_exit_batch+0x241/0x2e0 [ 16.805319][ T68] ? __pfx_default_device_exit_batch+0x10/0x10 [ 16.805521][ T68] ? ops_exit_list+0xb4/0x170 [ 16.805688][ T68] cleanup_net+0x4ef/0xba0 [ 16.805856][ T68] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 16.806027][ T68] ? __pfx_cleanup_net+0x10/0x10 [ 16.806182][ T68] ? trace_lock_acquire+0x14c/0x1f0 [ 16.806361][ T68] ? lock_acquire+0x32/0xc0 [ 16.806531][ T68] ? process_one_work+0xe0b/0x16d0 [ 16.806692][ T68] process_one_work+0xe55/0x16d0 [ 16.806847][ T68] ? __pfx___lock_release+0x10/0x10 [ 16.807008][ T68] ? __pfx_process_one_work+0x10/0x10 [ 16.807166][ T68] ? assign_work+0x16c/0x240 [ 16.807326][ T68] worker_thread+0x58c/0xce0 [ 16.807482][ T68] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 16.807675][ T68] ? __pfx_worker_thread+0x10/0x10 [ 16.807842][ T68] ? __pfx_worker_thread+0x10/0x10 [ 16.807994][ T68] kthread+0x28a/0x350 [ 16.808113][ T68] ? __pfx_kthread+0x10/0x10 [ 16.808268][ T68] ret_from_fork+0x31/0x70 [ 16.808422][ T68] ? __pfx_kthread+0x10/0x10 [ 16.808577][ T68] ret_from_fork_asm+0x1a/0x30 [ 16.808734][ T68] [ 16.824206][ T68] br0: port 1(vxlan0) entered disabled state [ 16.836727][ T68] vxlan0 (unregistering): left allmulticast mode [ 16.836983][ T68] vxlan0 (unregistering): left promiscuous mode [ 16.837171][ T68] br0: port 1(vxlan0) entered disabled state [ 16.886318][ T68] veth-tap: left allmulticast mode [ 16.886534][ T68] veth-tap: left promiscuous mode [ 16.886798][ T68] br0: port 2(veth-tap) entered disabled state