[ 11.039080][ T247] ip (247) used greatest stack depth: 23008 bytes left
[ 13.844074][ T300] bond0: (slave veth0): Enslaving as a backup interface with a down link
[ 13.925310][ T301] bond0: (slave veth1): Enslaving as a backup interface with a down link
[ 14.016741][ T302] br0: port 1(veth0) entered blocking state
[ 14.017410][ T302] br0: port 1(veth0) entered disabled state
[ 14.017692][ T302] veth0: entered allmulticast mode
[ 14.019046][ T302] veth0: entered promiscuous mode
[ 14.115892][ T303] br0: port 2(veth1) entered blocking state
[ 14.116220][ T303] br0: port 2(veth1) entered disabled state
[ 14.116489][ T303] veth1: entered allmulticast mode
[ 14.117739][ T303] veth1: entered promiscuous mode
[ 14.548426][ T214] br0: port 1(veth0) entered blocking state
[ 14.548846][ T214] br0: port 1(veth0) entered forwarding state
[ 14.550671][ T214] br0: port 2(veth1) entered blocking state
[ 14.550905][ T214] br0: port 2(veth1) entered forwarding state
[ 15.826987][ T68] bond0: (slave veth1): link status definitely up
[ 15.827470][ T68] bond0: (slave veth1): making interface the new active one
[ 15.828725][ T68] bond0: active interface up!
[ 16.192084][ T68] veth1: left allmulticast mode
[ 16.192429][ T68] veth1: left promiscuous mode
[ 16.192817][ T68] br0: port 2(veth1) entered disabled state
[ 16.195608][ T68] veth0: left allmulticast mode
[ 16.195796][ T68] veth0: left promiscuous mode
[ 16.196085][ T68] br0: port 1(veth0) entered disabled state
[ 16.347646][ T68]
[ 16.347772][ T68] ============================================
[ 16.347992][ T68] WARNING: possible recursive locking detected
[ 16.348171][ T68] 6.13.0-rc5-virtme #1 Not tainted
[ 16.348318][ T68] --------------------------------------------
[ 16.348502][ T68] kworker/u16:1/68 is trying to acquire lock:
[ 16.348680][ T68] ffffffff9f1f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[ 16.348982][ T68]
[ 16.348982][ T68] but task is already holding lock:
[ 16.349195][ T68] ffffffff9f1f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[ 16.349573][ T68]
[ 16.349573][ T68] other info that might help us debug this:
[ 16.349786][ T68] Possible unsafe locking scenario:
[ 16.349786][ T68]
[ 16.350009][ T68] CPU0
[ 16.350118][ T68] ----
[ 16.350226][ T68] lock((netdev_chain).rwsem);
[ 16.350386][ T68] lock((netdev_chain).rwsem);
[ 16.350547][ T68]
[ 16.350547][ T68] *** DEADLOCK ***
[ 16.350547][ T68]
[ 16.350760][ T68] May be due to missing lock nesting notation
[ 16.350760][ T68]
[ 16.350977][ T68] 5 locks held by kworker/u16:1/68:
[ 16.351133][ T68] #0: ffff8880010ad948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7ec/0x16d0
[ 16.351450][ T68] #1: ffffc90000497da0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xe0b/0x16d0
[ 16.351712][ T68] #2: ffffffff9f1e6550 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xbc/0xa50
[ 16.351983][ T68] #3: ffffffff9f201dc8 (rtnl_mutex){+.+.}-{4:4}, at: default_device_exit_batch+0x81/0x2e0
[ 16.352281][ T68] #4: ffffffff9f1f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90
[ 16.352574][ T68]
[ 16.352574][ T68] stack backtrace:
[ 16.352768][ T68] CPU: 1 UID: 0 PID: 68 Comm: kworker/u16:1 Not tainted 6.13.0-rc5-virtme #1
[ 16.353025][ T68] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.353205][ T68] Workqueue: netns cleanup_net
[ 16.353364][ T68] Call Trace:
[ 16.353486][ T68] <TASK>
[ 16.353563][ T68] dump_stack_lvl+0x82/0xd0
[ 16.353714][ T68] print_deadlock_bug+0x40a/0x650
[ 16.353874][ T68] validate_chain+0x5bf/0xae0
[ 16.354022][ T68] ? __pfx_validate_chain+0x10/0x10
[ 16.354169][ T68] ? hlock_class+0x4e/0x130
[ 16.354315][ T68] ? mark_lock+0x38/0x3e0
[ 16.354427][ T68] __lock_acquire+0xb9a/0x1680
[ 16.354575][ T68] lock_acquire.part.0+0xeb/0x330
[ 16.354720][ T68] ? blocking_notifier_call_chain+0x50/0x90
[ 16.354898][ T68] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 16.355054][ T68] ? trace_lock_acquire+0x14c/0x1f0
[ 16.355204][ T68] ? lock_acquire+0x32/0xc0
[ 16.355347][ T68] ? blocking_notifier_call_chain+0x50/0x90
[ 16.355524][ T68] down_read+0x9f/0x340
[ 16.355647][ T68] ? blocking_notifier_call_chain+0x50/0x90
[ 16.355829][ T68] ? __pfx_down_read+0x10/0x10
[ 16.355973][ T68] ? __pfx_validate_chain+0x10/0x10
[ 16.356116][ T68] ? hlock_class+0x4e/0x130
[ 16.356266][ T68] ? mark_lock+0x38/0x3e0
[ 16.356383][ T68] blocking_notifier_call_chain+0x50/0x90
[ 16.356527][ T68] netdev_lower_state_changed+0xa3/0x130
[ 16.356677][ T68] ? __pfx_netdev_lower_state_changed+0x10/0x10
[ 16.356855][ T68] ? __pfx_netdev_has_upper_dev+0x10/0x10
[ 16.357002][ T68] __bond_release_one+0xcc7/0x13f0
[ 16.357157][ T68] ? __lock_release+0x103/0x460
[ 16.357304][ T68] ? __try_to_del_timer_sync+0xe7/0x140
[ 16.357453][ T68] ? __pfx___bond_release_one+0x10/0x10
[ 16.357609][ T68] ? hlock_class+0x4e/0x130
[ 16.357752][ T68] ? mark_lock+0x38/0x3e0
[ 16.357867][ T68] ? mark_held_locks+0x9e/0xe0
[ 16.358029][ T68] ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 16.358214][ T68] ? __try_to_del_timer_sync+0xe7/0x140
[ 16.358360][ T68] ? __pfx___try_to_del_timer_sync+0x10/0x10
[ 16.358552][ T68] ? mark_held_locks+0x9e/0xe0
[ 16.358699][ T68] bond_slave_netdev_event+0x73a/0x870
[ 16.358841][ T68] ? ipmr_device_event+0x3d/0x1b0
[ 16.358986][ T68] notifier_call_chain+0xcd/0x150
[ 16.359147][ T68] blocking_notifier_call_chain+0x66/0x90
[ 16.359293][ T68] unregister_netdevice_many_notify+0xa7b/0x1580
[ 16.359474][ T68] ? __pfx_unregister_netdevice_many_notify+0x10/0x10
[ 16.359653][ T68] ? default_device_exit_batch+0x81/0x2e0
[ 16.359799][ T68] ? rtnl_is_locked+0x15/0x20
[ 16.359945][ T68] ? unregister_netdevice_queue+0x70/0x410
[ 16.360121][ T68] ? __pfx_unregister_netdevice_queue+0x10/0x10
[ 16.360301][ T68] ? __pfx_unregister_netdevice_queue+0x10/0x10
[ 16.360486][ T68] default_device_exit_batch+0x241/0x2e0
[ 16.360631][ T68] ? __pfx_default_device_exit_batch+0x10/0x10
[ 16.360812][ T68] ? mutex_is_locked+0x1c/0x60
[ 16.360959][ T68] ? nexthop_net_exit_batch_rtnl+0x83/0x210
[ 16.361154][ T68] cleanup_net+0x4ef/0xa50
[ 16.361299][ T68] ? __pfx_lock_acquire.part.0+0x10/0x10
[ 16.361463][ T68] ? __pfx_cleanup_net+0x10/0x10
[ 16.361606][ T68] ? trace_lock_acquire+0x14c/0x1f0
[ 16.361753][ T68] ? lock_acquire+0x32/0xc0
[ 16.361897][ T68] ? process_one_work+0xe0b/0x16d0
[ 16.362043][ T68] process_one_work+0xe55/0x16d0
[ 16.362194][ T68] ? __pfx___lock_release+0x10/0x10
[ 16.362339][ T68] ? __pfx_process_one_work+0x10/0x10
[ 16.362499][ T68] ? assign_work+0x16c/0x240
[ 16.362641][ T68] worker_thread+0x58c/0xce0
[ 16.362784][ T68] ? lockdep_hardirqs_on_prepare+0x275/0x410
[ 16.362970][ T68] ? __pfx_worker_thread+0x10/0x10
[ 16.363114][ T68] ? __pfx_worker_thread+0x10/0x10
[ 16.363275][ T68] kthread+0x28a/0x350
[ 16.363388][ T68] ? __pfx_kthread+0x10/0x10
[ 16.363534][ T68] ret_from_fork+0x31/0x70
[ 16.363679][ T68] ? __pfx_kthread+0x10/0x10
[ 16.363821][ T68] ret_from_fork_asm+0x1a/0x30
[ 16.363976][ T68] </TASK>
[ 16.364387][ T68] bond0: (slave veth1): Releasing backup interface