[ 13.795483][ T299] eth0: renamed from r1h1 [ 13.805298][ T299] ip (299) used greatest stack depth: 24144 bytes left [ 13.996818][ T301] eth0: renamed from r2h1 [ 14.269684][ T304] eth2: renamed from r2h2 [ 14.552926][ T307] eth1: renamed from r2r1 [ 14.967946][ T312] br0: port 1(eth0) entered blocking state [ 14.968431][ T312] br0: port 1(eth0) entered disabled state [ 14.968678][ T312] eth0: entered allmulticast mode [ 14.969899][ T312] eth0: entered promiscuous mode [ 14.972939][ T45] br0: port 1(eth0) entered blocking state [ 14.973243][ T45] br0: port 1(eth0) entered forwarding state [ 14.982157][ T312] ip (312) used greatest stack depth: 24080 bytes left [ 15.053503][ T313] br0: port 2(eth1) entered blocking state [ 15.054120][ T313] br0: port 2(eth1) entered disabled state [ 15.054751][ T313] eth1: entered allmulticast mode [ 15.056069][ T313] eth1: entered promiscuous mode [ 15.057821][ T39] br0: port 2(eth1) entered blocking state [ 15.058066][ T39] br0: port 2(eth1) entered forwarding state [ 31.660364][ T67] eth1: left allmulticast mode [ 31.660683][ T67] eth1: left promiscuous mode [ 31.661036][ T67] br0: port 2(eth1) entered disabled state [ 31.664149][ T67] eth0: left allmulticast mode [ 31.664361][ T67] eth0: left promiscuous mode [ 31.664653][ T67] br0: port 1(eth0) entered disabled state [ 36.973975][ T513] ip (513) used greatest stack depth: 23776 bytes left [ 37.072782][ T514] eth0: renamed from r1h1 [ 37.257765][ T516] eth0: renamed from r2h1 [ 37.543747][ T519] eth2: renamed from r2h2 [ 37.810908][ T522] eth1: renamed from r2r1 [ 39.020540][ T537] br0: port 1(eth0) entered blocking state [ 39.020857][ T537] br0: port 1(eth0) entered disabled state [ 39.021094][ T537] eth0: entered allmulticast mode [ 39.022283][ T537] eth0: entered promiscuous mode [ 39.024497][ T45] br0: port 1(eth0) entered blocking state [ 39.024753][ T45] br0: port 1(eth0) entered forwarding state [ 39.119690][ T538] br0: port 2(eth1) entered blocking state [ 39.119939][ T538] br0: port 2(eth1) entered disabled state [ 39.120166][ T538] eth1: entered allmulticast mode [ 39.121356][ T538] eth1: entered promiscuous mode [ 39.123711][ T45] br0: port 2(eth1) entered blocking state [ 39.123973][ T45] br0: port 2(eth1) entered forwarding state [ 55.832781][ T67] eth1: left allmulticast mode [ 55.832994][ T67] eth1: left promiscuous mode [ 55.833295][ T67] br0: port 2(eth1) entered disabled state [ 55.834745][ T67] eth0: left allmulticast mode [ 55.834915][ T67] eth0: left promiscuous mode [ 55.835193][ T67] br0: port 1(eth0) entered disabled state [ 55.857050][ T67] [ 55.857263][ T67] ============================================ [ 55.857521][ T67] WARNING: possible recursive locking detected [ 55.857784][ T67] 6.13.0-rc5-virtme #1 Not tainted [ 55.857995][ T67] -------------------------------------------- [ 55.858257][ T67] kworker/u16:1/67 is trying to acquire lock: [ 55.858517][ T67] ffffffffaa7f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 55.858962][ T67] [ 55.858962][ T67] but task is already holding lock: [ 55.859267][ T67] ffffffffaa7f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 55.859716][ T67] [ 55.859716][ T67] other info that might help us debug this: [ 55.860011][ T67] Possible unsafe locking scenario: [ 55.860011][ T67] [ 55.860319][ T67] CPU0 [ 55.860475][ T67] ---- [ 55.860634][ T67] lock((netdev_chain).rwsem); [ 55.860844][ T67] lock((netdev_chain).rwsem); [ 55.861063][ T67] [ 55.861063][ T67] *** DEADLOCK *** [ 55.861063][ T67] [ 55.861362][ T67] May be due to missing lock nesting notation [ 55.861362][ T67] [ 55.861667][ T67] 5 locks held by kworker/u16:1/67: [ 55.861877][ T67] #0: ffff8880010b5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0 [ 55.862308][ T67] #1: ffffc90000487da0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0 [ 55.862682][ T67] #2: ffffffffaa7ec4d0 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbc/0xba0 [ 55.863054][ T67] #3: ffffffffaa807e88 (rtnl_mutex){+.+.}-{4:4}, at: cleanup_net+0x45e/0xba0 [ 55.863431][ T67] #4: ffffffffaa7f6a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 55.863857][ T67] [ 55.863857][ T67] stack backtrace: [ 55.864119][ T67] CPU: 2 UID: 0 PID: 67 Comm: kworker/u16:1 Not tainted 6.13.0-rc5-virtme #1 [ 55.864488][ T67] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 55.864755][ T67] Workqueue: netns cleanup_net [ 55.865003][ T67] Call Trace: [ 55.865166][ T67] [ 55.865271][ T67] dump_stack_lvl+0x82/0xd0 [ 55.865473][ T67] print_deadlock_bug+0x40a/0x650 [ 55.865679][ T67] validate_chain+0x5bf/0xae0 [ 55.865873][ T67] ? __pfx_validate_chain+0x10/0x10 [ 55.866069][ T67] ? hlock_class+0x4e/0x130 [ 55.866272][ T67] ? mark_lock+0x38/0x3e0 [ 55.866434][ T67] __lock_acquire+0xb9a/0x1680 [ 55.866635][ T67] lock_acquire.part.0+0xeb/0x330 [ 55.866839][ T67] ? blocking_notifier_call_chain+0x50/0x90 [ 55.867093][ T67] ? __lock_acquire+0xb9a/0x1680 [ 55.867288][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 55.867477][ T67] ? trace_lock_acquire+0x14c/0x1f0 [ 55.867664][ T67] ? lock_acquire+0x32/0xc0 [ 55.867865][ T67] ? blocking_notifier_call_chain+0x50/0x90 [ 55.868125][ T67] down_read+0x9f/0x340 [ 55.868279][ T67] ? blocking_notifier_call_chain+0x50/0x90 [ 55.868541][ T67] ? __pfx_down_read+0x10/0x10 [ 55.868749][ T67] ? __lock_release+0x103/0x460 [ 55.868955][ T67] blocking_notifier_call_chain+0x50/0x90 [ 55.869160][ T67] __netdev_upper_dev_unlink+0xd9/0x220 [ 55.869369][ T67] ? mark_held_locks+0x9e/0xe0 [ 55.869574][ T67] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 55.869824][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 55.870214][ T67] ? __try_to_del_timer_sync+0xe7/0x140 [ 55.870424][ T67] ? __pfx___try_to_del_timer_sync+0x10/0x10 [ 55.870682][ T67] ? mark_held_locks+0x9e/0xe0 [ 55.871032][ T67] netdev_upper_dev_unlink+0x71/0xa0 [ 55.871237][ T67] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 55.871490][ T67] ? mutex_is_locked+0x1c/0x60 [ 55.871688][ T67] ? rtnl_is_locked+0x15/0x20 [ 55.872029][ T67] ? netdev_master_upper_dev_get+0x13/0x120 [ 55.872278][ T67] vrf_device_event+0x78/0xe0 [ 55.872486][ T67] notifier_call_chain+0xcd/0x150 [ 55.872692][ T67] blocking_notifier_call_chain+0x66/0x90 [ 55.873024][ T67] unregister_netdevice_many_notify+0xa83/0x1580 [ 55.873273][ T67] ? mark_held_locks+0x9e/0xe0 [ 55.873474][ T67] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 55.873849][ T67] ? mutex_is_locked+0x1c/0x60 [ 55.874062][ T67] ? rtnl_is_locked+0x15/0x20 [ 55.874266][ T67] ? mutex_is_locked+0x1c/0x60 [ 55.874473][ T67] ? nexthop_net_exit_batch_rtnl+0x83/0x210 [ 55.874857][ T67] cleanup_net+0x4cf/0xba0 [ 55.875065][ T67] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 55.875278][ T67] ? __pfx_cleanup_net+0x10/0x10 [ 55.875487][ T67] ? trace_lock_acquire+0x14c/0x1f0 [ 55.875839][ T67] ? lock_acquire+0x32/0xc0 [ 55.876047][ T67] ? process_one_work+0xe0b/0x16d0 [ 55.876258][ T67] process_one_work+0xe55/0x16d0 [ 55.876471][ T67] ? __pfx___lock_release+0x10/0x10 [ 55.876817][ T67] ? __pfx_process_one_work+0x10/0x10 [ 55.877022][ T67] ? assign_work+0x16c/0x240 [ 55.877220][ T67] worker_thread+0x58c/0xce0 [ 55.877428][ T67] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 55.877815][ T67] ? __pfx_worker_thread+0x10/0x10 [ 55.878022][ T67] ? __pfx_worker_thread+0x10/0x10 [ 55.878229][ T67] kthread+0x28a/0x350 [ 55.878404][ T67] ? __pfx_kthread+0x10/0x10 [ 55.878749][ T67] ret_from_fork+0x31/0x70 [ 55.878955][ T67] ? __pfx_kthread+0x10/0x10 [ 55.879153][ T67] ret_from_fork_asm+0x1a/0x30 [ 55.879352][ T67] [ 60.001348][ T741] eth0: renamed from r1h1 [ 60.152482][ T743] eth0: renamed from r2h1 [ 60.362584][ T746] eth2: renamed from r2h2 [ 60.576619][ T749] eth1: renamed from r2r1 [ 60.868894][ T754] br0: port 1(eth0) entered blocking state [ 60.869101][ T754] br0: port 1(eth0) entered disabled state [ 60.869280][ T754] eth0: entered allmulticast mode [ 60.876301][ T754] eth0: entered promiscuous mode [ 60.877921][ T45] br0: port 1(eth0) entered blocking state [ 60.878167][ T45] br0: port 1(eth0) entered forwarding state [ 60.936914][ T755] br0: port 2(eth1) entered blocking state [ 60.937182][ T755] br0: port 2(eth1) entered disabled state [ 60.937379][ T755] eth1: entered allmulticast mode [ 60.938278][ T755] eth1: entered promiscuous mode [ 60.939586][ T45] br0: port 2(eth1) entered blocking state [ 60.939799][ T45] br0: port 2(eth1) entered forwarding state [ 76.184656][ T67] eth1: left allmulticast mode [ 76.184834][ T67] eth1: left promiscuous mode [ 76.185126][ T67] br0: port 2(eth1) entered disabled state [ 76.186284][ T67] eth0: left allmulticast mode [ 76.186465][ T67] eth0: left promiscuous mode [ 76.186708][ T67] br0: port 1(eth0) entered disabled state [ 80.220567][ T969] eth0: renamed from r1h1 [ 80.374218][ T971] eth0: renamed from r2h1 [ 80.579195][ T974] eth2: renamed from r2h2 [ 80.785217][ T977] eth1: renamed from r2r1 [ 81.663178][ T992] br0: port 1(eth0) entered blocking state [ 81.663546][ T992] br0: port 1(eth0) entered disabled state [ 81.663734][ T992] eth0: entered allmulticast mode [ 81.664656][ T992] eth0: entered promiscuous mode [ 81.666223][ T45] br0: port 1(eth0) entered blocking state [ 81.666447][ T45] br0: port 1(eth0) entered forwarding state [ 81.731876][ T993] br0: port 2(eth1) entered blocking state [ 81.732181][ T993] br0: port 2(eth1) entered disabled state [ 81.732374][ T993] eth1: entered allmulticast mode [ 81.733282][ T993] eth1: entered promiscuous mode [ 81.734542][ T45] br0: port 2(eth1) entered blocking state [ 81.734725][ T45] br0: port 2(eth1) entered forwarding state [ 96.960380][ T67] eth1: left allmulticast mode [ 96.960558][ T67] eth1: left promiscuous mode [ 96.960817][ T67] br0: port 2(eth1) entered disabled state [ 96.961956][ T67] eth0: left allmulticast mode [ 96.962098][ T67] eth0: left promiscuous mode [ 96.962366][ T67] br0: port 1(eth0) entered disabled state