[ 10.926512][ T250] ip (250) used greatest stack depth: 23984 bytes left [ 13.256674][ T308] 8021q: 802.1Q VLAN Support v1.8 [ 16.378136][ T378] GACT probability NOT on [ 17.756227][ T414] br10: port 1(veth1.10) entered blocking state [ 17.756785][ T414] br10: port 1(veth1.10) entered disabled state [ 17.757355][ T414] veth1.10: entered allmulticast mode [ 17.757640][ T414] veth1: entered allmulticast mode [ 17.759756][ T414] veth1.10: entered promiscuous mode [ 17.760057][ T414] veth1: entered promiscuous mode [ 18.233189][ T431] br11: port 1(veth1.11) entered blocking state [ 18.233513][ T431] br11: port 1(veth1.11) entered disabled state [ 18.233783][ T431] veth1.11: entered allmulticast mode [ 18.235757][ T431] veth1.11: entered promiscuous mode [ 19.074384][ T461] br10: port 2(veth2.10) entered blocking state [ 19.074671][ T461] br10: port 2(veth2.10) entered disabled state [ 19.074940][ T461] veth2.10: entered allmulticast mode [ 19.075118][ T461] veth2: entered allmulticast mode [ 19.077064][ T461] veth2.10: entered promiscuous mode [ 19.078135][ T461] veth2: entered promiscuous mode [ 19.595352][ T478] br11: port 2(veth2.11) entered blocking state [ 19.595662][ T478] br11: port 2(veth2.11) entered disabled state [ 19.595950][ T478] veth2.11: entered allmulticast mode [ 19.598406][ T478] veth2.11: entered promiscuous mode [ 20.040869][ T490] br10: port 2(veth2.10) entered blocking state [ 20.041297][ T490] br10: port 2(veth2.10) entered forwarding state [ 20.041995][ T490] br10: port 1(veth1.10) entered blocking state [ 20.042266][ T490] br10: port 1(veth1.10) entered forwarding state [ 20.051692][ T490] ip (490) used greatest stack depth: 23952 bytes left [ 20.176178][ T495] br11: port 2(veth2.11) entered blocking state [ 20.176724][ T495] br11: port 2(veth2.11) entered forwarding state [ 20.177540][ T495] br11: port 1(veth1.11) entered blocking state [ 20.178016][ T495] br11: port 1(veth1.11) entered forwarding state [ 46.823835][ T620] br11: port 2(veth2.11) entered disabled state [ 46.824976][ T620] br11: port 1(veth1.11) entered disabled state [ 46.851099][ T620] ip (620) used greatest stack depth: 23632 bytes left [ 46.967127][ T622] br10: port 2(veth2.10) entered disabled state [ 46.967756][ T622] br10: port 1(veth1.10) entered disabled state [ 47.167704][ T626] veth2.11: left allmulticast mode [ 47.167931][ T626] veth2.11: left promiscuous mode [ 47.168251][ T626] br11: port 2(veth2.11) entered disabled state [ 47.383313][ T630] veth2: left allmulticast mode [ 47.383986][ T630] veth2: left promiscuous mode [ 47.472275][ T633] veth2.10: left allmulticast mode [ 47.472513][ T633] veth2.10: left promiscuous mode [ 47.472838][ T633] br10: port 2(veth2.10) entered disabled state [ 47.991140][ T644] veth1.11: left allmulticast mode [ 47.991367][ T644] veth1.11: left promiscuous mode [ 47.991695][ T644] br11: port 1(veth1.11) entered disabled state [ 48.231550][ T648] veth1: left allmulticast mode [ 48.231784][ T648] veth1: left promiscuous mode [ 48.327118][ T650] veth1.10: left allmulticast mode [ 48.327482][ T650] veth1.10: left promiscuous mode [ 48.327973][ T650] br10: port 1(veth1.10) entered disabled state [ 49.244341][ T664] [ 49.244576][ T664] ============================================ [ 49.244804][ T664] WARNING: possible recursive locking detected [ 49.245035][ T664] 6.13.0-rc5-virtme #1 Not tainted [ 49.245183][ T664] -------------------------------------------- [ 49.245365][ T664] ip/664 is trying to acquire lock: [ 49.245537][ T664] ffffffff8fdd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 49.245848][ T664] [ 49.245848][ T664] but task is already holding lock: [ 49.246069][ T664] ffffffff8fdd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 49.246369][ T664] [ 49.246369][ T664] other info that might help us debug this: [ 49.246648][ T664] Possible unsafe locking scenario: [ 49.246648][ T664] [ 49.246970][ T664] CPU0 [ 49.247079][ T664] ---- [ 49.247186][ T664] lock((netdev_chain).rwsem); [ 49.247333][ T664] lock((netdev_chain).rwsem); [ 49.247478][ T664] [ 49.247478][ T664] *** DEADLOCK *** [ 49.247478][ T664] [ 49.247710][ T664] May be due to missing lock nesting notation [ 49.247710][ T664] [ 49.247936][ T664] 2 locks held by ip/664: [ 49.248095][ T664] #0: ffffffff8fde7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 49.248363][ T664] #1: ffffffff8fdd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 49.248676][ T664] [ 49.248676][ T664] stack backtrace: [ 49.248855][ T664] CPU: 0 UID: 0 PID: 664 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 49.249135][ T664] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 49.249357][ T664] Call Trace: [ 49.249475][ T664] [ 49.249587][ T664] dump_stack_lvl+0x82/0xd0 [ 49.249748][ T664] print_deadlock_bug+0x40a/0x650 [ 49.249949][ T664] validate_chain+0x5bf/0xae0 [ 49.250131][ T664] ? __pfx_validate_chain+0x10/0x10 [ 49.250330][ T664] ? hlock_class+0x4e/0x130 [ 49.250483][ T664] ? mark_lock+0x38/0x3e0 [ 49.250658][ T664] __lock_acquire+0xb9a/0x1680 [ 49.250857][ T664] lock_acquire.part.0+0xeb/0x330 [ 49.251004][ T664] ? blocking_notifier_call_chain+0x50/0x90 [ 49.251195][ T664] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 49.251390][ T664] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 49.251601][ T664] ? trace_lock_acquire+0x14c/0x1f0 [ 49.251748][ T664] ? lock_acquire+0x32/0xc0 [ 49.251897][ T664] ? blocking_notifier_call_chain+0x50/0x90 [ 49.252083][ T664] down_read+0x9f/0x340 [ 49.252197][ T664] ? blocking_notifier_call_chain+0x50/0x90 [ 49.252413][ T664] ? __pfx_down_read+0x10/0x10 [ 49.252610][ T664] ? __lock_release+0x103/0x460 [ 49.252789][ T664] ? netconsole_netdev_event+0x2c1/0x620 [ 49.252955][ T664] ? __pfx___lock_release+0x10/0x10 [ 49.253102][ T664] blocking_notifier_call_chain+0x50/0x90 [ 49.253312][ T664] __netdev_upper_dev_unlink+0xd9/0x220 [ 49.253514][ T664] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 49.253784][ T664] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 49.253934][ T664] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 49.254156][ T664] ? rtnl_is_locked+0x15/0x20 [ 49.254323][ T664] netdev_upper_dev_unlink+0x71/0xa0 [ 49.254470][ T664] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 49.254696][ T664] ? netconsole_netdev_event+0x2c1/0x620 [ 49.254853][ T664] ? mutex_is_locked+0x1c/0x60 [ 49.255002][ T664] ? rtnl_is_locked+0x15/0x20 [ 49.255148][ T664] ? netdev_master_upper_dev_get+0x13/0x120 [ 49.255340][ T664] vrf_device_event+0x78/0xe0 [vrf] [ 49.255551][ T664] notifier_call_chain+0xcd/0x150 [ 49.255749][ T664] blocking_notifier_call_chain+0x66/0x90 [ 49.255898][ T664] unregister_netdevice_many_notify+0xa7b/0x1580 [ 49.256137][ T664] ? hlock_class+0x4e/0x130 [ 49.256284][ T664] ? mark_lock+0x38/0x3e0 [ 49.256395][ T664] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 49.256608][ T664] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 49.256860][ T664] ? kfree+0xf3/0x330 [ 49.257005][ T664] ? vlan_vid_del+0x310/0x5e0 [ 49.257154][ T664] ? vlan_vid_del+0x310/0x5e0 [ 49.257321][ T664] rtnl_dellink+0x348/0xa40 [ 49.257525][ T664] ? __pfx_rtnl_dellink+0x10/0x10 [ 49.257719][ T664] ? find_held_lock+0x2c/0x110 [ 49.257925][ T664] ? __lock_release+0x103/0x460 [ 49.258073][ T664] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 49.258219][ T664] ? __pfx___lock_release+0x10/0x10 [ 49.258418][ T664] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 49.258616][ T664] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 49.258802][ T664] ? __pfx_rtnl_dellink+0x10/0x10 [ 49.258952][ T664] rtnetlink_rcv_msg+0x712/0xc10 [ 49.259101][ T664] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 49.259272][ T664] ? hlock_class+0x4e/0x130 [ 49.259450][ T664] ? mark_lock+0x38/0x3e0 [ 49.259579][ T664] ? __lock_acquire+0xb9a/0x1680 [ 49.259789][ T664] netlink_rcv_skb+0x130/0x360 [ 49.260001][ T664] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 49.260152][ T664] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 49.260302][ T664] ? netlink_deliver_tap+0x13e/0x340 [ 49.260452][ T664] ? netlink_deliver_tap+0xc3/0x340 [ 49.260616][ T664] netlink_unicast+0x44b/0x710 [ 49.260799][ T664] ? __pfx_netlink_unicast+0x10/0x10 [ 49.260983][ T664] ? find_held_lock+0x2c/0x110 [ 49.261140][ T664] netlink_sendmsg+0x723/0xbe0 [ 49.261286][ T664] ? __pfx_netlink_sendmsg+0x10/0x10 [ 49.261433][ T664] ____sys_sendmsg+0x7ac/0xa10 [ 49.261609][ T664] ? __pfx_____sys_sendmsg+0x10/0x10 [ 49.261770][ T664] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 49.261954][ T664] ___sys_sendmsg+0xee/0x170 [ 49.262104][ T664] ? __pfx____sys_sendmsg+0x10/0x10 [ 49.262254][ T664] ? kasan_save_stack+0x34/0x50 [ 49.262403][ T664] ? kasan_save_stack+0x24/0x50 [ 49.262590][ T664] ? __kasan_record_aux_stack+0x8e/0xa0 [ 49.262809][ T664] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 49.262997][ T664] ? __x64_sys_close+0x7c/0xd0 [ 49.263143][ T664] ? do_syscall_64+0xc1/0x1d0 [ 49.263288][ T664] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.263477][ T664] ? __lock_acquire+0xb9a/0x1680 [ 49.263640][ T664] ? find_held_lock+0x2c/0x110 [ 49.263787][ T664] ? __lock_release+0x103/0x460 [ 49.263932][ T664] ? __virt_addr_valid+0x22b/0x430 [ 49.264079][ T664] ? __pfx___lock_release+0x10/0x10 [ 49.264227][ T664] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 49.264375][ T664] __sys_sendmsg+0x109/0x1a0 [ 49.264539][ T664] ? __pfx___sys_sendmsg+0x10/0x10 [ 49.264690][ T664] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 49.264881][ T664] do_syscall_64+0xc1/0x1d0 [ 49.265026][ T664] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.265207][ T664] RIP: 0033:0x7f09f859d9a7 [ 49.265362][ T664] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 49.265912][ T664] RSP: 002b:00007ffee2676488 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.266134][ T664] RAX: ffffffffffffffda RBX: 00007ffee2676bb0 RCX: 00007f09f859d9a7 [ 49.266354][ T664] RDX: 0000000000000000 RSI: 00007ffee26764f0 RDI: 0000000000000005 [ 49.266626][ T664] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 49.266879][ T664] R10: 00007f09f845bef8 R11: 0000000000000246 R12: 0000000000000002 [ 49.267098][ T664] R13: 0000000067795749 R14: 0000000000498600 R15: 0000000000000000 [ 49.267320][ T664]