[ 11.258420][ T282] veth0: renamed from veth-hv-1 [ 12.024709][ T297] br0: port 1(vxlan0) entered blocking state [ 12.025204][ T297] br0: port 1(vxlan0) entered disabled state [ 12.025517][ T297] vxlan0: entered allmulticast mode [ 12.027122][ T297] vxlan0: entered promiscuous mode [ 12.111868][ T298] br0: port 1(vxlan0) entered blocking state [ 12.112390][ T298] br0: port 1(vxlan0) entered forwarding state [ 12.273234][ T300] veth0: renamed from veth-hv-2 [ 12.895150][ T308] br0: port 1(vxlan0) entered blocking state [ 12.896097][ T308] br0: port 1(vxlan0) entered disabled state [ 12.896353][ T308] vxlan0: entered allmulticast mode [ 12.897504][ T308] vxlan0: entered promiscuous mode [ 12.976938][ T309] br0: port 1(vxlan0) entered blocking state [ 12.977302][ T309] br0: port 1(vxlan0) entered forwarding state [ 13.204213][ T311] ip (311) used greatest stack depth: 23664 bytes left [ 13.408941][ T315] br0: port 2(veth-tap) entered blocking state [ 13.409648][ T315] br0: port 2(veth-tap) entered disabled state [ 13.409917][ T315] veth-tap: entered allmulticast mode [ 13.411113][ T315] veth-tap: entered promiscuous mode [ 13.815010][ T140] br0: port 2(veth-tap) entered blocking state [ 13.815423][ T140] br0: port 2(veth-tap) entered forwarding state [ 14.096601][ T325] br0: port 2(veth-tap) entered blocking state [ 14.096856][ T325] br0: port 2(veth-tap) entered disabled state [ 14.097102][ T325] veth-tap: entered allmulticast mode [ 14.098404][ T325] veth-tap: entered promiscuous mode [ 14.512035][ T69] br0: port 2(veth-tap) entered blocking state [ 14.512362][ T69] br0: port 2(veth-tap) entered forwarding state [ 14.964687][ T335] br0: port 1(vxlan0) entered disabled state [ 15.050971][ T336] br0: port 1(vxlan0) entered blocking state [ 15.051343][ T336] br0: port 1(vxlan0) entered forwarding state [ 15.219034][ T338] br0: port 1(vxlan0) entered disabled state [ 15.297461][ T339] br0: port 1(vxlan0) entered blocking state [ 15.297817][ T339] br0: port 1(vxlan0) entered forwarding state [ 15.989501][ T11] veth-tap: left allmulticast mode [ 15.989802][ T11] veth-tap: left promiscuous mode [ 15.990121][ T11] br0: port 2(veth-tap) entered disabled state [ 15.992643][ T11] vxlan0: left allmulticast mode [ 15.992820][ T11] vxlan0: left promiscuous mode [ 15.993099][ T11] br0: port 1(vxlan0) entered disabled state [ 16.291550][ T11] [ 16.291669][ T11] ============================================ [ 16.291852][ T11] WARNING: possible recursive locking detected [ 16.292030][ T11] 6.13.0-rc5-virtme #1 Not tainted [ 16.292180][ T11] -------------------------------------------- [ 16.292359][ T11] kworker/u16:0/11 is trying to acquire lock: [ 16.292540][ T11] ffffffff887f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 16.292848][ T11] [ 16.292848][ T11] but task is already holding lock: [ 16.293066][ T11] ffffffff887f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 16.293362][ T11] [ 16.293362][ T11] other info that might help us debug this: [ 16.293580][ T11] Possible unsafe locking scenario: [ 16.293580][ T11] [ 16.293798][ T11] CPU0 [ 16.293908][ T11] ---- [ 16.294017][ T11] lock((netdev_chain).rwsem); [ 16.294165][ T11] lock((netdev_chain).rwsem); [ 16.294308][ T11] [ 16.294308][ T11] *** DEADLOCK *** [ 16.294308][ T11] [ 16.294526][ T11] May be due to missing lock nesting notation [ 16.294526][ T11] [ 16.294742][ T11] 5 locks held by kworker/u16:0/11: [ 16.294889][ T11] #0: ffff8880010b5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0 [ 16.295192][ T11] #1: ffffc900000b7da0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0 [ 16.295458][ T11] #2: ffffffff887ec4d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbc/0xba0 [ 16.295722][ T11] #3: ffffffff88807e88 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x81/0x2e0 [ 16.296018][ T11] #4: ffffffff887f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 16.296314][ T11] [ 16.296314][ T11] stack backtrace: [ 16.296496][ T11] CPU: 2 UID: 0 PID: 11 Comm: kworker/u16:0 Not tainted 6.13.0-rc5-virtme #1 [ 16.296750][ T11] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 16.296930][ T11] Workqueue: netns cleanup_net [ 16.297084][ T11] Call Trace: [ 16.297193][ T11] [ 16.297269][ T11] dump_stack_lvl+0x82/0xd0 [ 16.297420][ T11] print_deadlock_bug+0x40a/0x650 [ 16.297571][ T11] validate_chain+0x5bf/0xae0 [ 16.297722][ T11] ? __pfx_validate_chain+0x10/0x10 [ 16.297869][ T11] ? hlock_class+0x4e/0x130 [ 16.298014][ T11] ? mark_lock+0x38/0x3e0 [ 16.298130][ T11] __lock_acquire+0xb9a/0x1680 [ 16.298279][ T11] lock_acquire.part.0+0xeb/0x330 [ 16.298427][ T11] ? blocking_notifier_call_chain+0x50/0x90 [ 16.298614][ T11] ? __lock_acquire+0xb9a/0x1680 [ 16.298762][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 16.298907][ T11] ? trace_lock_acquire+0x14c/0x1f0 [ 16.299053][ T11] ? lock_acquire+0x32/0xc0 [ 16.299199][ T11] ? blocking_notifier_call_chain+0x50/0x90 [ 16.299383][ T11] down_read+0x9f/0x340 [ 16.299498][ T11] ? blocking_notifier_call_chain+0x50/0x90 [ 16.299684][ T11] ? __pfx_down_read+0x10/0x10 [ 16.299855][ T11] ? __lock_release+0x103/0x460 [ 16.300005][ T11] blocking_notifier_call_chain+0x50/0x90 [ 16.300154][ T11] __netdev_upper_dev_unlink+0xd9/0x220 [ 16.300305][ T11] ? mark_held_locks+0x9e/0xe0 [ 16.300454][ T11] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 16.300639][ T11] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 16.300828][ T11] ? __try_to_del_timer_sync+0xe7/0x140 [ 16.300990][ T11] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 16.301174][ T11] ? mark_held_locks+0x9e/0xe0 [ 16.301320][ T11] netdev_upper_dev_unlink+0x71/0xa0 [ 16.301467][ T11] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 16.301652][ T11] ? mutex_is_locked+0x1c/0x60 [ 16.301796][ T11] ? rtnl_is_locked+0x15/0x20 [ 16.301944][ T11] ? netdev_master_upper_dev_get+0x13/0x120 [ 16.302123][ T11] vrf_device_event+0x78/0xe0 [ 16.302274][ T11] notifier_call_chain+0xcd/0x150 [ 16.302425][ T11] blocking_notifier_call_chain+0x66/0x90 [ 16.302574][ T11] unregister_netdevice_many_notify+0xa83/0x1580 [ 16.302762][ T11] ? unregister_netdevice_queue+0x70/0x410 [ 16.302944][ T11] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 16.303131][ T11] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 16.303320][ T11] ? rtnl_is_locked+0x15/0x20 [ 16.303467][ T11] ? unregister_netdevice_queue+0x70/0x410 [ 16.303651][ T11] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 16.303829][ T11] ? vrf_dellink+0x100/0x150 [ 16.303976][ T11] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 16.304156][ T11] default_device_exit_batch+0x241/0x2e0 [ 16.304305][ T11] ? __pfx_default_device_exit_batch+0x10/0x10 [ 16.304485][ T11] ? ops_exit_list+0xb4/0x170 [ 16.304630][ T11] cleanup_net+0x4ef/0xba0 [ 16.304777][ T11] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 16.304924][ T11] ? __pfx_cleanup_net+0x10/0x10 [ 16.305069][ T11] ? trace_lock_acquire+0x14c/0x1f0 [ 16.305215][ T11] ? lock_acquire+0x32/0xc0 [ 16.305362][ T11] ? process_one_work+0xe0b/0x16d0 [ 16.305509][ T11] process_one_work+0xe55/0x16d0 [ 16.305657][ T11] ? __pfx___lock_release+0x10/0x10 [ 16.305803][ T11] ? __pfx_process_one_work+0x10/0x10 [ 16.305949][ T11] ? assign_work+0x16c/0x240 [ 16.306096][ T11] worker_thread+0x58c/0xce0 [ 16.306261][ T11] ? __pfx_worker_thread+0x10/0x10 [ 16.306409][ T11] kthread+0x28a/0x350 [ 16.306521][ T11] ? __pfx_kthread+0x10/0x10 [ 16.306669][ T11] ret_from_fork+0x31/0x70 [ 16.306817][ T11] ? __pfx_kthread+0x10/0x10 [ 16.306965][ T11] ret_from_fork_asm+0x1a/0x30 [ 16.307115][ T11] [ 16.320426][ T11] br0: port 1(vxlan0) entered disabled state [ 16.330579][ T11] vxlan0 (unregistering): left allmulticast mode [ 16.330816][ T11] vxlan0 (unregistering): left promiscuous mode [ 16.331028][ T11] br0: port 1(vxlan0) entered disabled state [ 16.371670][ T11] veth-tap: left allmulticast mode [ 16.371861][ T11] veth-tap: left promiscuous mode [ 16.372128][ T11] br0: port 2(veth-tap) entered disabled state