[ 11.323450][ T249] ip (249) used greatest stack depth: 23248 bytes left [ 14.066701][ T299] 8021q: 802.1Q VLAN Support v1.8 [ 17.451240][ T345] br1: port 1(vx100) entered blocking state [ 17.452815][ T345] br1: port 1(vx100) entered disabled state [ 17.453261][ T345] vx100: entered allmulticast mode [ 17.455768][ T345] vx100: entered promiscuous mode [ 17.456808][ T345] br1: port 1(vx100) entered blocking state [ 17.457221][ T345] br1: port 1(vx100) entered forwarding state [ 17.655056][ T347] br1: port 2(veth1) entered blocking state [ 17.655485][ T347] br1: port 2(veth1) entered disabled state [ 17.655794][ T347] veth1: entered allmulticast mode [ 17.667113][ T347] veth1: entered promiscuous mode [ 17.750246][ T149] br1: port 2(veth1) entered blocking state [ 17.750675][ T149] br1: port 2(veth1) entered forwarding state [ 17.905081][ T351] br1: port 3(veth2) entered blocking state [ 17.906664][ T351] br1: port 3(veth2) entered disabled state [ 17.906982][ T351] veth2: entered allmulticast mode [ 17.908977][ T351] veth2: entered promiscuous mode [ 17.990912][ T45] br1: port 3(veth2) entered blocking state [ 17.991332][ T45] br1: port 3(veth2) entered forwarding state [ 21.173907][ T398] br2: port 1(w1) entered blocking state [ 21.174220][ T398] br2: port 1(w1) entered disabled state [ 21.174521][ T398] w1: entered allmulticast mode [ 21.177640][ T398] w1: entered promiscuous mode [ 21.739362][ T405] br2: port 2(vx100) entered blocking state [ 21.740188][ T405] br2: port 2(vx100) entered disabled state [ 21.740525][ T405] vx100: entered allmulticast mode [ 21.742640][ T405] vx100: entered promiscuous mode [ 21.743210][ T405] br2: port 2(vx100) entered blocking state [ 21.743508][ T405] br2: port 2(vx100) entered forwarding state [ 22.458610][ T349] br2: port 1(w1) entered blocking state [ 22.459232][ T349] br2: port 1(w1) entered forwarding state [ 24.651280][ T445] br2: port 1(w1) entered blocking state [ 24.651575][ T445] br2: port 1(w1) entered disabled state [ 24.651903][ T445] w1: entered allmulticast mode [ 24.653981][ T445] w1: entered promiscuous mode [ 25.197890][ T452] br2: port 2(vx100) entered blocking state [ 25.198202][ T452] br2: port 2(vx100) entered disabled state [ 25.198498][ T452] vx100: entered allmulticast mode [ 25.200369][ T452] vx100: entered promiscuous mode [ 25.201885][ T452] br2: port 2(vx100) entered blocking state [ 25.202150][ T452] br2: port 2(vx100) entered forwarding state [ 25.870428][ T349] br2: port 1(w1) entered blocking state [ 25.870682][ T349] br2: port 1(w1) entered forwarding state [ 37.964215][ T11] vx100: left allmulticast mode [ 37.964539][ T11] vx100: left promiscuous mode [ 37.965038][ T11] br2: port 2(vx100) entered disabled state [ 37.967703][ T11] w1: left allmulticast mode [ 37.967915][ T11] w1: left promiscuous mode [ 37.968228][ T11] br2: port 1(w1) entered disabled state [ 38.490857][ T11] vx100: left allmulticast mode [ 38.491068][ T11] vx100: left promiscuous mode [ 38.491447][ T11] br2: port 2(vx100) entered disabled state [ 38.493723][ T11] w1: left allmulticast mode [ 38.493902][ T11] w1: left promiscuous mode [ 38.494227][ T11] br2: port 1(w1) entered disabled state [ 40.638176][ T574] br1: port 3(veth2) entered disabled state [ 40.711653][ T576] veth2: left allmulticast mode [ 40.711954][ T576] veth2: left promiscuous mode [ 40.712462][ T576] br1: port 3(veth2) entered disabled state [ 40.881265][ T578] br1: port 2(veth1) entered disabled state [ 40.948548][ T579] veth1: left allmulticast mode [ 40.948785][ T579] veth1: left promiscuous mode [ 40.949090][ T579] br1: port 2(veth1) entered disabled state [ 41.041641][ T580] vx100: left allmulticast mode [ 41.041915][ T580] vx100: left promiscuous mode [ 41.042270][ T580] br1: port 1(vx100) entered disabled state [ 41.881860][ T589] [ 41.882044][ T589] ============================================ [ 41.882268][ T589] WARNING: possible recursive locking detected [ 41.882484][ T589] 6.13.0-rc5-virtme #1 Not tainted [ 41.882658][ T589] -------------------------------------------- [ 41.882866][ T589] ip/589 is trying to acquire lock: [ 41.883035][ T589] ffffffffb4bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 41.883381][ T589] [ 41.883381][ T589] but task is already holding lock: [ 41.883634][ T589] ffffffffb4bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 41.883977][ T589] [ 41.883977][ T589] other info that might help us debug this: [ 41.884232][ T589] Possible unsafe locking scenario: [ 41.884232][ T589] [ 41.884491][ T589] CPU0 [ 41.884622][ T589] ---- [ 41.884746][ T589] lock((netdev_chain).rwsem); [ 41.884919][ T589] lock((netdev_chain).rwsem); [ 41.885092][ T589] [ 41.885092][ T589] *** DEADLOCK *** [ 41.885092][ T589] [ 41.885344][ T589] May be due to missing lock nesting notation [ 41.885344][ T589] [ 41.885597][ T589] 2 locks held by ip/589: [ 41.885728][ T589] #0: ffffffffb4be7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 41.886036][ T589] #1: ffffffffb4bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 41.886391][ T589] [ 41.886391][ T589] stack backtrace: [ 41.886609][ T589] CPU: 3 UID: 0 PID: 589 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 41.886865][ T589] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 41.887093][ T589] Call Trace: [ 41.887228][ T589] [ 41.887322][ T589] dump_stack_lvl+0x82/0xd0 [ 41.887500][ T589] print_deadlock_bug+0x40a/0x650 [ 41.887673][ T589] validate_chain+0x5bf/0xae0 [ 41.887857][ T589] ? __pfx_validate_chain+0x10/0x10 [ 41.888032][ T589] ? hlock_class+0x4e/0x130 [ 41.888202][ T589] ? mark_lock+0x38/0x3e0 [ 41.888336][ T589] __lock_acquire+0xb9a/0x1680 [ 41.888511][ T589] lock_acquire.part.0+0xeb/0x330 [ 41.888682][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 41.888894][ T589] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 41.889121][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.889310][ T589] ? trace_lock_acquire+0x14c/0x1f0 [ 41.889485][ T589] ? lock_acquire+0x32/0xc0 [ 41.889657][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 41.889874][ T589] down_read+0x9f/0x340 [ 41.890007][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 41.890219][ T589] ? __pfx_down_read+0x10/0x10 [ 41.890393][ T589] ? __lock_release+0x103/0x460 [ 41.890567][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 41.890742][ T589] ? __pfx___lock_release+0x10/0x10 [ 41.890912][ T589] blocking_notifier_call_chain+0x50/0x90 [ 41.891089][ T589] __netdev_upper_dev_unlink+0xd9/0x220 [ 41.891264][ T589] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 41.891476][ T589] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 41.891653][ T589] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 41.891868][ T589] ? rtnl_is_locked+0x15/0x20 [ 41.892040][ T589] netdev_upper_dev_unlink+0x71/0xa0 [ 41.892211][ T589] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 41.892422][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 41.892597][ T589] ? mutex_is_locked+0x1c/0x60 [ 41.892774][ T589] ? rtnl_is_locked+0x15/0x20 [ 41.892944][ T589] ? netdev_master_upper_dev_get+0x13/0x120 [ 41.893155][ T589] vrf_device_event+0x78/0xe0 [vrf] [ 41.893336][ T589] notifier_call_chain+0xcd/0x150 [ 41.893505][ T589] blocking_notifier_call_chain+0x66/0x90 [ 41.893677][ T589] unregister_netdevice_many_notify+0xa7b/0x1580 [ 41.893892][ T589] ? hlock_class+0x4e/0x130 [ 41.894068][ T589] ? mark_lock+0x38/0x3e0 [ 41.894199][ T589] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 41.894417][ T589] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 41.894639][ T589] ? kfree+0xf3/0x330 [ 41.894773][ T589] ? vlan_vid_del+0x310/0x5e0 [ 41.894947][ T589] ? vlan_vid_del+0x310/0x5e0 [ 41.895122][ T589] rtnl_dellink+0x348/0xa40 [ 41.895297][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 41.895485][ T589] ? find_held_lock+0x2c/0x110 [ 41.895660][ T589] ? __lock_release+0x103/0x460 [ 41.895830][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 41.896005][ T589] ? __pfx___lock_release+0x10/0x10 [ 41.896180][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.896352][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 41.896521][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 41.896701][ T589] rtnetlink_rcv_msg+0x712/0xc10 [ 41.896873][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 41.897043][ T589] ? hlock_class+0x4e/0x130 [ 41.897216][ T589] ? mark_lock+0x38/0x3e0 [ 41.897350][ T589] ? __lock_acquire+0xb9a/0x1680 [ 41.897523][ T589] netlink_rcv_skb+0x130/0x360 [ 41.897697][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 41.897869][ T589] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 41.898044][ T589] ? netlink_deliver_tap+0x13e/0x340 [ 41.898219][ T589] ? netlink_deliver_tap+0xc3/0x340 [ 41.898396][ T589] netlink_unicast+0x44b/0x710 [ 41.898567][ T589] ? __pfx_netlink_unicast+0x10/0x10 [ 41.898736][ T589] ? find_held_lock+0x2c/0x110 [ 41.898910][ T589] netlink_sendmsg+0x723/0xbe0 [ 41.899091][ T589] ? __pfx_netlink_sendmsg+0x10/0x10 [ 41.899269][ T589] ____sys_sendmsg+0x7ac/0xa10 [ 41.899444][ T589] ? __pfx_____sys_sendmsg+0x10/0x10 [ 41.899613][ T589] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 41.899834][ T589] ___sys_sendmsg+0xee/0x170 [ 41.900005][ T589] ? __pfx____sys_sendmsg+0x10/0x10 [ 41.900181][ T589] ? kasan_save_stack+0x34/0x50 [ 41.900356][ T589] ? kasan_save_stack+0x24/0x50 [ 41.900524][ T589] ? __kasan_record_aux_stack+0x8e/0xa0 [ 41.900697][ T589] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 41.900916][ T589] ? __x64_sys_close+0x7c/0xd0 [ 41.901089][ T589] ? do_syscall_64+0xc1/0x1d0 [ 41.901263][ T589] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 41.901481][ T589] ? __lock_acquire+0xb9a/0x1680 [ 41.901656][ T589] ? find_held_lock+0x2c/0x110 [ 41.901831][ T589] ? __lock_release+0x103/0x460 [ 41.902004][ T589] ? __virt_addr_valid+0x22b/0x430 [ 41.902177][ T589] ? __pfx___lock_release+0x10/0x10 [ 41.902350][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.902524][ T589] __sys_sendmsg+0x109/0x1a0 [ 41.902697][ T589] ? __pfx___sys_sendmsg+0x10/0x10 [ 41.902866][ T589] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 41.903095][ T589] do_syscall_64+0xc1/0x1d0 [ 41.903270][ T589] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 41.903487][ T589] RIP: 0033:0x7f77868589a7 [ 41.903671][ T589] 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 [ 41.904282][ T589] RSP: 002b:00007ffc13acc1c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 41.904542][ T589] RAX: ffffffffffffffda RBX: 00007ffc13acc8f0 RCX: 00007f77868589a7 [ 41.904804][ T589] RDX: 0000000000000000 RSI: 00007ffc13acc230 RDI: 0000000000000005 [ 41.905060][ T589] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 41.905327][ T589] R10: 00007f7786716ef8 R11: 0000000000000246 R12: 0000000000000002 [ 41.905583][ T589] R13: 00000000677957c8 R14: 0000000000498600 R15: 0000000000000000 [ 41.905853][ T589]