[ 11.063183][ T249] ip (249) used greatest stack depth: 23248 bytes left [ 14.084714][ T300] 8021q: 802.1Q VLAN Support v1.8 [ 17.668598][ T345] br1: port 1(vx10) entered blocking state [ 17.669230][ T345] br1: port 1(vx10) entered disabled state [ 17.669744][ T345] vx10: entered allmulticast mode [ 17.672213][ T345] vx10: entered promiscuous mode [ 17.673639][ T345] br1: port 1(vx10) entered blocking state [ 17.674069][ T345] br1: port 1(vx10) entered forwarding state [ 18.043181][ T350] br1: port 2(vx20) entered blocking state [ 18.043513][ T350] br1: port 2(vx20) entered disabled state [ 18.043817][ T350] vx20: entered allmulticast mode [ 18.046114][ T350] vx20: entered promiscuous mode [ 18.047000][ T350] br1: port 2(vx20) entered blocking state [ 18.047312][ T350] br1: port 2(vx20) entered forwarding state [ 18.202844][ T352] br1: port 3(veth1) entered blocking state [ 18.203140][ T352] br1: port 3(veth1) entered disabled state [ 18.203551][ T352] veth1: entered allmulticast mode [ 18.205520][ T352] veth1: entered promiscuous mode [ 18.301137][ T149] br1: port 3(veth1) entered blocking state [ 18.301715][ T149] br1: port 3(veth1) entered forwarding state [ 18.552641][ T356] br1: port 4(veth2) entered blocking state [ 18.553007][ T356] br1: port 4(veth2) entered disabled state [ 18.553497][ T356] veth2: entered allmulticast mode [ 18.555582][ T356] veth2: entered promiscuous mode [ 18.643564][ T149] br1: port 4(veth2) entered blocking state [ 18.643922][ T149] br1: port 4(veth2) entered forwarding state [ 22.307131][ T406] br2: port 1(w1) entered blocking state [ 22.307581][ T406] br2: port 1(w1) entered disabled state [ 22.307961][ T406] w1: entered allmulticast mode [ 22.310931][ T406] w1: entered promiscuous mode [ 22.975560][ T414] br2: port 2(vx10) entered blocking state [ 22.975930][ T414] br2: port 2(vx10) entered disabled state [ 22.976448][ T414] vx10: entered allmulticast mode [ 22.978418][ T414] vx10: entered promiscuous mode [ 22.978951][ T414] br2: port 2(vx10) entered blocking state [ 22.979190][ T414] br2: port 2(vx10) entered forwarding state [ 23.593019][ T421] br2: port 3(vx20) entered blocking state [ 23.593472][ T421] br2: port 3(vx20) entered disabled state [ 23.593779][ T421] vx20: entered allmulticast mode [ 23.595697][ T421] vx20: entered promiscuous mode [ 23.596278][ T421] br2: port 3(vx20) entered blocking state [ 23.596572][ T421] br2: port 3(vx20) entered forwarding state [ 24.272732][ T39] br2: port 1(w1) entered blocking state [ 24.273193][ T39] br2: port 1(w1) entered forwarding state [ 26.452909][ T462] br2: port 1(w1) entered blocking state [ 26.453258][ T462] br2: port 1(w1) entered disabled state [ 26.453607][ T462] w1: entered allmulticast mode [ 26.455651][ T462] w1: entered promiscuous mode [ 27.077943][ T470] br2: port 2(vx10) entered blocking state [ 27.078309][ T470] br2: port 2(vx10) entered disabled state [ 27.078600][ T470] vx10: entered allmulticast mode [ 27.080583][ T470] vx10: entered promiscuous mode [ 27.081117][ T470] br2: port 2(vx10) entered blocking state [ 27.081636][ T470] br2: port 2(vx10) entered forwarding state [ 27.661023][ T477] br2: port 3(vx20) entered blocking state [ 27.661378][ T477] br2: port 3(vx20) entered disabled state [ 27.661679][ T477] vx20: entered allmulticast mode [ 27.663956][ T477] vx20: entered promiscuous mode [ 27.664510][ T477] br2: port 3(vx20) entered blocking state [ 27.664775][ T477] br2: port 3(vx20) entered forwarding state [ 28.338079][ T39] br2: port 1(w1) entered blocking state [ 28.338399][ T39] br2: port 1(w1) entered forwarding state [ 44.348384][ T65] vx20: left allmulticast mode [ 44.348834][ T65] vx20: left promiscuous mode [ 44.349231][ T65] br2: port 3(vx20) entered disabled state [ 44.352436][ T65] vx10: left allmulticast mode [ 44.352674][ T65] vx10: left promiscuous mode [ 44.353069][ T65] br2: port 2(vx10) entered disabled state [ 44.356177][ T65] w1: left allmulticast mode [ 44.356422][ T65] w1: left promiscuous mode [ 44.356749][ T65] br2: port 1(w1) entered disabled state [ 44.945822][ T65] vx20: left allmulticast mode [ 44.946083][ T65] vx20: left promiscuous mode [ 44.946426][ T65] br2: port 3(vx20) entered disabled state [ 44.949008][ T65] vx10: left allmulticast mode [ 44.949228][ T65] vx10: left promiscuous mode [ 44.949563][ T65] br2: port 2(vx10) entered disabled state [ 44.951858][ T65] w1: left allmulticast mode [ 44.952084][ T65] w1: left promiscuous mode [ 44.952477][ T65] br2: port 1(w1) entered disabled state [ 47.382249][ T617] br1: port 4(veth2) entered disabled state [ 47.457136][ T618] veth2: left allmulticast mode [ 47.457464][ T618] veth2: left promiscuous mode [ 47.457792][ T618] br1: port 4(veth2) entered disabled state [ 47.749316][ T621] br1: port 3(veth1) entered disabled state [ 47.838954][ T622] veth1: left allmulticast mode [ 47.839294][ T622] veth1: left promiscuous mode [ 47.839639][ T622] br1: port 3(veth1) entered disabled state [ 47.992757][ T624] vx20: left allmulticast mode [ 47.993028][ T624] vx20: left promiscuous mode [ 47.994737][ T624] br1: port 2(vx20) entered disabled state [ 48.367851][ T628] vx10: left allmulticast mode [ 48.368079][ T628] vx10: left promiscuous mode [ 48.368402][ T628] br1: port 1(vx10) entered disabled state [ 49.228146][ T637] [ 49.228342][ T637] ============================================ [ 49.228594][ T637] WARNING: possible recursive locking detected [ 49.228848][ T637] 6.13.0-rc5-virtme #1 Not tainted [ 49.229048][ T637] -------------------------------------------- [ 49.229292][ T637] ip/637 is trying to acquire lock: [ 49.229471][ T637] ffffffff9e1d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 49.229862][ T637] [ 49.229862][ T637] but task is already holding lock: [ 49.230139][ T637] ffffffff9e1d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 49.230503][ T637] [ 49.230503][ T637] other info that might help us debug this: [ 49.230771][ T637] Possible unsafe locking scenario: [ 49.230771][ T637] [ 49.231028][ T637] CPU0 [ 49.231158][ T637] ---- [ 49.231289][ T637] lock((netdev_chain).rwsem); [ 49.231463][ T637] lock((netdev_chain).rwsem); [ 49.231647][ T637] [ 49.231647][ T637] *** DEADLOCK *** [ 49.231647][ T637] [ 49.231907][ T637] May be due to missing lock nesting notation [ 49.231907][ T637] [ 49.232168][ T637] 2 locks held by ip/637: [ 49.232301][ T637] #0: ffffffff9e1e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 49.232620][ T637] #1: ffffffff9e1d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 49.233017][ T637] [ 49.233017][ T637] stack backtrace: [ 49.233219][ T637] CPU: 3 UID: 0 PID: 637 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 49.233470][ T637] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 49.233679][ T637] Call Trace: [ 49.233805][ T637] [ 49.233899][ T637] dump_stack_lvl+0x82/0xd0 [ 49.234077][ T637] print_deadlock_bug+0x40a/0x650 [ 49.234265][ T637] validate_chain+0x5bf/0xae0 [ 49.234437][ T637] ? __pfx_validate_chain+0x10/0x10 [ 49.234613][ T637] ? hlock_class+0x4e/0x130 [ 49.234789][ T637] ? mark_lock+0x38/0x3e0 [ 49.234919][ T637] __lock_acquire+0xb9a/0x1680 [ 49.235095][ T637] lock_acquire.part.0+0xeb/0x330 [ 49.235279][ T637] ? blocking_notifier_call_chain+0x50/0x90 [ 49.235510][ T637] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 49.235760][ T637] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 49.235969][ T637] ? trace_lock_acquire+0x14c/0x1f0 [ 49.236167][ T637] ? lock_acquire+0x32/0xc0 [ 49.236364][ T637] ? blocking_notifier_call_chain+0x50/0x90 [ 49.236603][ T637] down_read+0x9f/0x340 [ 49.236754][ T637] ? blocking_notifier_call_chain+0x50/0x90 [ 49.236998][ T637] ? __pfx_down_read+0x10/0x10 [ 49.237190][ T637] ? __lock_release+0x103/0x460 [ 49.237378][ T637] ? netconsole_netdev_event+0x2c1/0x620 [ 49.237574][ T637] ? __pfx___lock_release+0x10/0x10 [ 49.237771][ T637] blocking_notifier_call_chain+0x50/0x90 [ 49.237946][ T637] __netdev_upper_dev_unlink+0xd9/0x220 [ 49.238131][ T637] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 49.238364][ T637] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 49.238546][ T637] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 49.238770][ T637] ? rtnl_is_locked+0x15/0x20 [ 49.238962][ T637] netdev_upper_dev_unlink+0x71/0xa0 [ 49.239134][ T637] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 49.239369][ T637] ? netconsole_netdev_event+0x2c1/0x620 [ 49.239559][ T637] ? mutex_is_locked+0x1c/0x60 [ 49.239752][ T637] ? rtnl_is_locked+0x15/0x20 [ 49.239936][ T637] ? netdev_master_upper_dev_get+0x13/0x120 [ 49.240179][ T637] vrf_device_event+0x78/0xe0 [vrf] [ 49.240345][ T637] notifier_call_chain+0xcd/0x150 [ 49.240516][ T637] blocking_notifier_call_chain+0x66/0x90 [ 49.240684][ T637] unregister_netdevice_many_notify+0xa7b/0x1580 [ 49.240913][ T637] ? hlock_class+0x4e/0x130 [ 49.241096][ T637] ? mark_lock+0x38/0x3e0 [ 49.241228][ T637] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 49.241433][ T637] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 49.241642][ T637] ? kfree+0xf3/0x330 [ 49.241764][ T637] ? vlan_vid_del+0x310/0x5e0 [ 49.241936][ T637] ? vlan_vid_del+0x310/0x5e0 [ 49.242097][ T637] rtnl_dellink+0x348/0xa40 [ 49.242273][ T637] ? __pfx_rtnl_dellink+0x10/0x10 [ 49.242446][ T637] ? find_held_lock+0x2c/0x110 [ 49.242606][ T637] ? __lock_release+0x103/0x460 [ 49.242762][ T637] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 49.242920][ T637] ? __pfx___lock_release+0x10/0x10 [ 49.243087][ T637] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 49.243245][ T637] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 49.243404][ T637] ? __pfx_rtnl_dellink+0x10/0x10 [ 49.243571][ T637] rtnetlink_rcv_msg+0x712/0xc10 [ 49.243728][ T637] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 49.243892][ T637] ? hlock_class+0x4e/0x130 [ 49.244044][ T637] ? mark_lock+0x38/0x3e0 [ 49.244179][ T637] ? __lock_acquire+0xb9a/0x1680 [ 49.244359][ T637] netlink_rcv_skb+0x130/0x360 [ 49.244530][ T637] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 49.244717][ T637] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 49.244910][ T637] ? netlink_deliver_tap+0x13e/0x340 [ 49.245079][ T637] ? netlink_deliver_tap+0xc3/0x340 [ 49.245236][ T637] netlink_unicast+0x44b/0x710 [ 49.245392][ T637] ? __pfx_netlink_unicast+0x10/0x10 [ 49.245548][ T637] ? find_held_lock+0x2c/0x110 [ 49.245717][ T637] netlink_sendmsg+0x723/0xbe0 [ 49.245902][ T637] ? __pfx_netlink_sendmsg+0x10/0x10 [ 49.246088][ T637] ____sys_sendmsg+0x7ac/0xa10 [ 49.246269][ T637] ? __pfx_____sys_sendmsg+0x10/0x10 [ 49.246437][ T637] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 49.246643][ T637] ___sys_sendmsg+0xee/0x170 [ 49.246815][ T637] ? __pfx____sys_sendmsg+0x10/0x10 [ 49.246998][ T637] ? kasan_save_stack+0x34/0x50 [ 49.247174][ T637] ? kasan_save_stack+0x24/0x50 [ 49.247349][ T637] ? __kasan_record_aux_stack+0x8e/0xa0 [ 49.247537][ T637] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 49.247777][ T637] ? __x64_sys_close+0x7c/0xd0 [ 49.247968][ T637] ? do_syscall_64+0xc1/0x1d0 [ 49.248162][ T637] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.248401][ T637] ? __lock_acquire+0xb9a/0x1680 [ 49.248609][ T637] ? find_held_lock+0x2c/0x110 [ 49.248803][ T637] ? __lock_release+0x103/0x460 [ 49.248979][ T637] ? __virt_addr_valid+0x22b/0x430 [ 49.249161][ T637] ? __pfx___lock_release+0x10/0x10 [ 49.249340][ T637] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 49.249524][ T637] __sys_sendmsg+0x109/0x1a0 [ 49.249704][ T637] ? __pfx___sys_sendmsg+0x10/0x10 [ 49.249898][ T637] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 49.250134][ T637] do_syscall_64+0xc1/0x1d0 [ 49.250310][ T637] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.250526][ T637] RIP: 0033:0x7f0a673599a7 [ 49.250717][ T637] 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 [ 49.251363][ T637] RSP: 002b:00007ffc064783d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.251635][ T637] RAX: ffffffffffffffda RBX: 00007ffc06478b00 RCX: 00007f0a673599a7 [ 49.251911][ T637] RDX: 0000000000000000 RSI: 00007ffc06478440 RDI: 0000000000000005 [ 49.252173][ T637] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 49.252456][ T637] R10: 00007f0a67217ef8 R11: 0000000000000246 R12: 0000000000000002 [ 49.252722][ T637] R13: 0000000067792b3c R14: 0000000000498600 R15: 0000000000000000 [ 49.252985][ T637] [ 49.267948][ T637] ip (637) used greatest stack depth: 23120 bytes left