[ 10.499118][ T249] ip (249) used greatest stack depth: 24336 bytes left [ 13.163073][ T299] 8021q: 802.1Q VLAN Support v1.8 [ 16.191947][ T339] ip (339) used greatest stack depth: 23256 bytes left [ 16.342915][ T343] br1: port 1(vx100) entered blocking state [ 16.343420][ T343] br1: port 1(vx100) entered disabled state [ 16.344047][ T343] vx100: entered allmulticast mode [ 16.346123][ T343] vx100: entered promiscuous mode [ 16.347125][ T343] br1: port 1(vx100) entered blocking state [ 16.347682][ T343] br1: port 1(vx100) entered forwarding state [ 16.504519][ T345] br1: port 2(veth1) entered blocking state [ 16.504797][ T345] br1: port 2(veth1) entered disabled state [ 16.505097][ T345] veth1: entered allmulticast mode [ 16.507916][ T345] veth1: entered promiscuous mode [ 16.588094][ T251] br1: port 2(veth1) entered blocking state [ 16.588510][ T251] br1: port 2(veth1) entered forwarding state [ 16.731484][ T348] br1: port 3(veth2) entered blocking state [ 16.731798][ T348] br1: port 3(veth2) entered disabled state [ 16.732085][ T348] veth2: entered allmulticast mode [ 16.735093][ T348] veth2: entered promiscuous mode [ 16.824903][ T55] br1: port 3(veth2) entered blocking state [ 16.825213][ T55] br1: port 3(veth2) entered forwarding state [ 19.970358][ T397] br2: port 1(w1) entered blocking state [ 19.970663][ T397] br2: port 1(w1) entered disabled state [ 19.970898][ T397] w1: entered allmulticast mode [ 19.972885][ T397] w1: entered promiscuous mode [ 20.511498][ T404] br2: port 2(vx100) entered blocking state [ 20.511767][ T404] br2: port 2(vx100) entered disabled state [ 20.512039][ T404] vx100: entered allmulticast mode [ 20.514517][ T404] vx100: entered promiscuous mode [ 20.515027][ T404] br2: port 2(vx100) entered blocking state [ 20.515264][ T404] br2: port 2(vx100) entered forwarding state [ 21.172739][ T251] br2: port 1(w1) entered blocking state [ 21.173155][ T251] br2: port 1(w1) entered forwarding state [ 23.366532][ T444] br2: port 1(w1) entered blocking state [ 23.366865][ T444] br2: port 1(w1) entered disabled state [ 23.367108][ T444] w1: entered allmulticast mode [ 23.369086][ T444] w1: entered promiscuous mode [ 23.943363][ T451] br2: port 2(vx100) entered blocking state [ 23.943658][ T451] br2: port 2(vx100) entered disabled state [ 23.943924][ T451] vx100: entered allmulticast mode [ 23.945845][ T451] vx100: entered promiscuous mode [ 23.946346][ T451] br2: port 2(vx100) entered blocking state [ 23.946596][ T451] br2: port 2(vx100) entered forwarding state [ 24.652701][ T55] br2: port 1(w1) entered blocking state [ 24.653231][ T55] br2: port 1(w1) entered forwarding state [ 36.764915][ T11] vx100: left allmulticast mode [ 36.765422][ T11] vx100: left promiscuous mode [ 36.766067][ T11] br2: port 2(vx100) entered disabled state [ 36.772795][ T11] w1: left allmulticast mode [ 36.773201][ T11] w1: left promiscuous mode [ 36.774851][ T11] br2: port 1(w1) entered disabled state [ 37.331993][ T11] vx100: left allmulticast mode [ 37.332343][ T11] vx100: left promiscuous mode [ 37.332712][ T11] br2: port 2(vx100) entered disabled state [ 37.335350][ T11] w1: left allmulticast mode [ 37.335763][ T11] w1: left promiscuous mode [ 37.336095][ T11] br2: port 1(w1) entered disabled state [ 39.561365][ T574] br1: port 3(veth2) entered disabled state [ 39.634491][ T575] veth2: left allmulticast mode [ 39.634748][ T575] veth2: left promiscuous mode [ 39.635085][ T575] br1: port 3(veth2) entered disabled state [ 39.815698][ T577] br1: port 2(veth1) entered disabled state [ 39.899730][ T578] veth1: left allmulticast mode [ 39.899949][ T578] veth1: left promiscuous mode [ 39.900255][ T578] br1: port 2(veth1) entered disabled state [ 39.985921][ T579] vx100: left allmulticast mode [ 39.986287][ T579] vx100: left promiscuous mode [ 39.986737][ T579] br1: port 1(vx100) entered disabled state [ 40.833284][ T588] [ 40.833456][ T588] ============================================ [ 40.833686][ T588] WARNING: possible recursive locking detected [ 40.833905][ T588] 6.13.0-rc5-virtme #1 Not tainted [ 40.834082][ T588] -------------------------------------------- [ 40.834301][ T588] ip/588 is trying to acquire lock: [ 40.834478][ T588] ffffffff9b5d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 40.834855][ T588] [ 40.834855][ T588] but task is already holding lock: [ 40.835119][ T588] ffffffff9b5d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 40.835477][ T588] [ 40.835477][ T588] other info that might help us debug this: [ 40.835744][ T588] Possible unsafe locking scenario: [ 40.835744][ T588] [ 40.836003][ T588] CPU0 [ 40.836138][ T588] ---- [ 40.836271][ T588] lock((netdev_chain).rwsem); [ 40.836448][ T588] lock((netdev_chain).rwsem); [ 40.836623][ T588] [ 40.836623][ T588] *** DEADLOCK *** [ 40.836623][ T588] [ 40.836884][ T588] May be due to missing lock nesting notation [ 40.836884][ T588] [ 40.837149][ T588] 2 locks held by ip/588: [ 40.837287][ T588] #0: ffffffff9b5e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 40.837613][ T588] #1: ffffffff9b5d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 40.837978][ T588] [ 40.837978][ T588] stack backtrace: [ 40.838202][ T588] CPU: 2 UID: 0 PID: 588 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 40.838474][ T588] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 40.838700][ T588] Call Trace: [ 40.838837][ T588] [ 40.838932][ T588] dump_stack_lvl+0x82/0xd0 [ 40.839119][ T588] print_deadlock_bug+0x40a/0x650 [ 40.839303][ T588] validate_chain+0x5bf/0xae0 [ 40.839487][ T588] ? __pfx_validate_chain+0x10/0x10 [ 40.839669][ T588] ? hlock_class+0x4e/0x130 [ 40.839846][ T588] ? mark_lock+0x38/0x3e0 [ 40.839983][ T588] __lock_acquire+0xb9a/0x1680 [ 40.840165][ T588] lock_acquire.part.0+0xeb/0x330 [ 40.840349][ T588] ? blocking_notifier_call_chain+0x50/0x90 [ 40.840571][ T588] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 40.840795][ T588] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.840975][ T588] ? trace_lock_acquire+0x14c/0x1f0 [ 40.841170][ T588] ? lock_acquire+0x32/0xc0 [ 40.841355][ T588] ? blocking_notifier_call_chain+0x50/0x90 [ 40.841582][ T588] down_read+0x9f/0x340 [ 40.841722][ T588] ? blocking_notifier_call_chain+0x50/0x90 [ 40.841951][ T588] ? __pfx_down_read+0x10/0x10 [ 40.842138][ T588] ? __lock_release+0x103/0x460 [ 40.842316][ T588] ? netconsole_netdev_event+0x2c1/0x620 [ 40.842497][ T588] ? __pfx___lock_release+0x10/0x10 [ 40.842676][ T588] blocking_notifier_call_chain+0x50/0x90 [ 40.842856][ T588] __netdev_upper_dev_unlink+0xd9/0x220 [ 40.843036][ T588] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 40.843259][ T588] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 40.843445][ T588] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 40.843666][ T588] ? rtnl_is_locked+0x15/0x20 [ 40.843848][ T588] netdev_upper_dev_unlink+0x71/0xa0 [ 40.844027][ T588] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 40.844249][ T588] ? netconsole_netdev_event+0x2c1/0x620 [ 40.844428][ T588] ? mutex_is_locked+0x1c/0x60 [ 40.844614][ T588] ? rtnl_is_locked+0x15/0x20 [ 40.844793][ T588] ? netdev_master_upper_dev_get+0x13/0x120 [ 40.845015][ T588] vrf_device_event+0x78/0xe0 [vrf] [ 40.845197][ T588] notifier_call_chain+0xcd/0x150 [ 40.845376][ T588] blocking_notifier_call_chain+0x66/0x90 [ 40.845555][ T588] unregister_netdevice_many_notify+0xa7b/0x1580 [ 40.845778][ T588] ? hlock_class+0x4e/0x130 [ 40.845960][ T588] ? mark_lock+0x38/0x3e0 [ 40.846098][ T588] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 40.846319][ T588] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 40.846544][ T588] ? kfree+0xf3/0x330 [ 40.846680][ T588] ? vlan_vid_del+0x310/0x5e0 [ 40.846861][ T588] ? vlan_vid_del+0x310/0x5e0 [ 40.847041][ T588] rtnl_dellink+0x348/0xa40 [ 40.847222][ T588] ? __pfx_rtnl_dellink+0x10/0x10 [ 40.847418][ T588] ? find_held_lock+0x2c/0x110 [ 40.847600][ T588] ? __lock_release+0x103/0x460 [ 40.847778][ T588] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 40.847957][ T588] ? __pfx___lock_release+0x10/0x10 [ 40.848136][ T588] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.848317][ T588] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 40.848495][ T588] ? __pfx_rtnl_dellink+0x10/0x10 [ 40.848680][ T588] rtnetlink_rcv_msg+0x712/0xc10 [ 40.848859][ T588] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 40.849038][ T588] ? hlock_class+0x4e/0x130 [ 40.849216][ T588] ? mark_lock+0x38/0x3e0 [ 40.849352][ T588] ? __lock_acquire+0xb9a/0x1680 [ 40.849533][ T588] netlink_rcv_skb+0x130/0x360 [ 40.849722][ T588] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 40.849907][ T588] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 40.850088][ T588] ? netlink_deliver_tap+0x13e/0x340 [ 40.850268][ T588] ? netlink_deliver_tap+0xc3/0x340 [ 40.850449][ T588] netlink_unicast+0x44b/0x710 [ 40.850626][ T588] ? __pfx_netlink_unicast+0x10/0x10 [ 40.850803][ T588] ? find_held_lock+0x2c/0x110 [ 40.850983][ T588] netlink_sendmsg+0x723/0xbe0 [ 40.851178][ T588] ? __pfx_netlink_sendmsg+0x10/0x10 [ 40.851360][ T588] ____sys_sendmsg+0x7ac/0xa10 [ 40.851539][ T588] ? __pfx_____sys_sendmsg+0x10/0x10 [ 40.851717][ T588] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 40.851942][ T588] ___sys_sendmsg+0xee/0x170 [ 40.852120][ T588] ? __pfx____sys_sendmsg+0x10/0x10 [ 40.852298][ T588] ? kasan_save_stack+0x34/0x50 [ 40.852481][ T588] ? kasan_save_stack+0x24/0x50 [ 40.852659][ T588] ? __kasan_record_aux_stack+0x8e/0xa0 [ 40.852838][ T588] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 40.853059][ T588] ? __x64_sys_close+0x7c/0xd0 [ 40.853236][ T588] ? do_syscall_64+0xc1/0x1d0 [ 40.853416][ T588] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 40.853638][ T588] ? __lock_acquire+0xb9a/0x1680 [ 40.853818][ T588] ? find_held_lock+0x2c/0x110 [ 40.854014][ T588] ? __lock_release+0x103/0x460 [ 40.854191][ T588] ? __virt_addr_valid+0x22b/0x430 [ 40.854372][ T588] ? __pfx___lock_release+0x10/0x10 [ 40.854549][ T588] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.854729][ T588] __sys_sendmsg+0x109/0x1a0 [ 40.854908][ T588] ? __pfx___sys_sendmsg+0x10/0x10 [ 40.855085][ T588] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 40.855314][ T588] do_syscall_64+0xc1/0x1d0 [ 40.855491][ T588] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 40.855711][ T588] RIP: 0033:0x7efc7eacb9a7 [ 40.855897][ T588] 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 [ 40.856524][ T588] RSP: 002b:00007ffdfb18daf8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 40.856793][ T588] RAX: ffffffffffffffda RBX: 00007ffdfb18e220 RCX: 00007efc7eacb9a7 [ 40.857057][ T588] RDX: 0000000000000000 RSI: 00007ffdfb18db60 RDI: 0000000000000005 [ 40.857321][ T588] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 40.857593][ T588] R10: 00007efc7e989ef8 R11: 0000000000000246 R12: 0000000000000002 [ 40.857859][ T588] R13: 0000000067790485 R14: 0000000000498600 R15: 0000000000000000 [ 40.858131][ T588]