[ 14.717002][ T301] 8021q: 802.1Q VLAN Support v1.8 [ 18.246482][ T346] br1: port 1(vx10) entered blocking state [ 18.246917][ T346] br1: port 1(vx10) entered disabled state [ 18.247296][ T346] vx10: entered allmulticast mode [ 18.250061][ T346] vx10: entered promiscuous mode [ 18.250991][ T346] br1: port 1(vx10) entered blocking state [ 18.251335][ T346] br1: port 1(vx10) entered forwarding state [ 18.259916][ T346] ip (346) used greatest stack depth: 24400 bytes left [ 18.591542][ T351] br1: port 2(vx20) entered blocking state [ 18.591948][ T351] br1: port 2(vx20) entered disabled state [ 18.592394][ T351] vx20: entered allmulticast mode [ 18.595711][ T351] vx20: entered promiscuous mode [ 18.603116][ T351] br1: port 2(vx20) entered blocking state [ 18.603389][ T351] br1: port 2(vx20) entered forwarding state [ 18.754937][ T353] br1: port 3(veth1) entered blocking state [ 18.755252][ T353] br1: port 3(veth1) entered disabled state [ 18.755542][ T353] veth1: entered allmulticast mode [ 18.757806][ T353] veth1: entered promiscuous mode [ 18.877616][ T40] br1: port 3(veth1) entered blocking state [ 18.878081][ T40] br1: port 3(veth1) entered forwarding state [ 19.104096][ T358] br1: port 4(veth2) entered blocking state [ 19.104447][ T358] br1: port 4(veth2) entered disabled state [ 19.104733][ T358] veth2: entered allmulticast mode [ 19.106880][ T358] veth2: entered promiscuous mode [ 19.189143][ T37] br1: port 4(veth2) entered blocking state [ 19.189450][ T37] br1: port 4(veth2) entered forwarding state [ 19.786336][ T366] ip (366) used greatest stack depth: 24256 bytes left [ 22.746934][ T408] br2: port 1(w1) entered blocking state [ 22.747179][ T408] br2: port 1(w1) entered disabled state [ 22.747828][ T408] w1: entered allmulticast mode [ 22.749821][ T408] w1: entered promiscuous mode [ 23.419307][ T416] br2: port 2(vx10) entered blocking state [ 23.419656][ T416] br2: port 2(vx10) entered disabled state [ 23.419951][ T416] vx10: entered allmulticast mode [ 23.422167][ T416] vx10: entered promiscuous mode [ 23.422759][ T416] br2: port 2(vx10) entered blocking state [ 23.423032][ T416] br2: port 2(vx10) entered forwarding state [ 24.122525][ T423] br2: port 3(vx20) entered blocking state [ 24.122845][ T423] br2: port 3(vx20) entered disabled state [ 24.123161][ T423] vx20: entered allmulticast mode [ 24.125929][ T423] vx20: entered promiscuous mode [ 24.126499][ T423] br2: port 3(vx20) entered blocking state [ 24.126769][ T423] br2: port 3(vx20) entered forwarding state [ 24.960757][ T40] br2: port 1(w1) entered blocking state [ 24.961304][ T40] br2: port 1(w1) entered forwarding state [ 27.483143][ T463] br2: port 1(w1) entered blocking state [ 27.483424][ T463] br2: port 1(w1) entered disabled state [ 27.484113][ T463] w1: entered allmulticast mode [ 27.487507][ T463] w1: entered promiscuous mode [ 28.178009][ T471] br2: port 2(vx10) entered blocking state [ 28.178364][ T471] br2: port 2(vx10) entered disabled state [ 28.178665][ T471] vx10: entered allmulticast mode [ 28.180911][ T471] vx10: entered promiscuous mode [ 28.181555][ T471] br2: port 2(vx10) entered blocking state [ 28.181841][ T471] br2: port 2(vx10) entered forwarding state [ 28.828132][ T478] br2: port 3(vx20) entered blocking state [ 28.828594][ T478] br2: port 3(vx20) entered disabled state [ 28.828885][ T478] vx20: entered allmulticast mode [ 28.830867][ T478] vx20: entered promiscuous mode [ 28.831493][ T478] br2: port 3(vx20) entered blocking state [ 28.831748][ T478] br2: port 3(vx20) entered forwarding state [ 29.516242][ T40] br2: port 1(w1) entered blocking state [ 29.516558][ T40] br2: port 1(w1) entered forwarding state [ 45.331933][ T11] vx20: left allmulticast mode [ 45.332256][ T11] vx20: left promiscuous mode [ 45.332669][ T11] br2: port 3(vx20) entered disabled state [ 45.335770][ T11] vx10: left allmulticast mode [ 45.335981][ T11] vx10: left promiscuous mode [ 45.336361][ T11] br2: port 2(vx10) entered disabled state [ 45.338408][ T11] w1: left allmulticast mode [ 45.338639][ T11] w1: left promiscuous mode [ 45.338945][ T11] br2: port 1(w1) entered disabled state [ 45.930995][ T11] vx20: left allmulticast mode [ 45.931252][ T11] vx20: left promiscuous mode [ 45.931605][ T11] br2: port 3(vx20) entered disabled state [ 45.934824][ T11] vx10: left allmulticast mode [ 45.935052][ T11] vx10: left promiscuous mode [ 45.935440][ T11] br2: port 2(vx10) entered disabled state [ 45.937913][ T11] w1: left allmulticast mode [ 45.938142][ T11] w1: left promiscuous mode [ 45.938463][ T11] br2: port 1(w1) entered disabled state [ 46.466789][ T597] ip (597) used greatest stack depth: 23928 bytes left [ 48.367289][ T619] br1: port 4(veth2) entered disabled state [ 48.450182][ T620] veth2: left allmulticast mode [ 48.450684][ T620] veth2: left promiscuous mode [ 48.451018][ T620] br1: port 4(veth2) entered disabled state [ 48.466690][ T620] ip (620) used greatest stack depth: 23736 bytes left [ 48.696003][ T623] br1: port 3(veth1) entered disabled state [ 48.794499][ T624] veth1: left allmulticast mode [ 48.794746][ T624] veth1: left promiscuous mode [ 48.795061][ T624] br1: port 3(veth1) entered disabled state [ 48.965737][ T626] vx20: left allmulticast mode [ 48.965975][ T626] vx20: left promiscuous mode [ 48.966289][ T626] br1: port 2(vx20) entered disabled state [ 49.353836][ T630] vx10: left allmulticast mode [ 49.354219][ T630] vx10: left promiscuous mode [ 49.354669][ T630] br1: port 1(vx10) entered disabled state [ 50.206437][ T639] [ 50.206612][ T639] ============================================ [ 50.206802][ T639] WARNING: possible recursive locking detected [ 50.206984][ T639] 6.13.0-rc5-virtme #1 Not tainted [ 50.207136][ T639] -------------------------------------------- [ 50.207318][ T639] ip/639 is trying to acquire lock: [ 50.207467][ T639] ffffffff911d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 50.207773][ T639] [ 50.207773][ T639] but task is already holding lock: [ 50.207985][ T639] ffffffff911d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 50.208302][ T639] [ 50.208302][ T639] other info that might help us debug this: [ 50.208522][ T639] Possible unsafe locking scenario: [ 50.208522][ T639] [ 50.208737][ T639] CPU0 [ 50.208845][ T639] ---- [ 50.208955][ T639] lock((netdev_chain).rwsem); [ 50.209100][ T639] lock((netdev_chain).rwsem); [ 50.209247][ T639] [ 50.209247][ T639] *** DEADLOCK *** [ 50.209247][ T639] [ 50.209461][ T639] May be due to missing lock nesting notation [ 50.209461][ T639] [ 50.209678][ T639] 2 locks held by ip/639: [ 50.209790][ T639] #0: ffffffff911e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 50.210064][ T639] #1: ffffffff911d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 50.210364][ T639] [ 50.210364][ T639] stack backtrace: [ 50.210547][ T639] CPU: 0 UID: 0 PID: 639 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 50.210771][ T639] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 50.210956][ T639] Call Trace: [ 50.211068][ T639] [ 50.211148][ T639] dump_stack_lvl+0x82/0xd0 [ 50.211305][ T639] print_deadlock_bug+0x40a/0x650 [ 50.211456][ T639] validate_chain+0x5bf/0xae0 [ 50.211611][ T639] ? __pfx_validate_chain+0x10/0x10 [ 50.211785][ T639] ? hlock_class+0x4e/0x130 [ 50.211937][ T639] ? mark_lock+0x38/0x3e0 [ 50.212052][ T639] __lock_acquire+0xb9a/0x1680 [ 50.212204][ T639] lock_acquire.part.0+0xeb/0x330 [ 50.212351][ T639] ? blocking_notifier_call_chain+0x50/0x90 [ 50.212544][ T639] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 50.212738][ T639] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 50.212883][ T639] ? trace_lock_acquire+0x14c/0x1f0 [ 50.213029][ T639] ? lock_acquire+0x32/0xc0 [ 50.213179][ T639] ? blocking_notifier_call_chain+0x50/0x90 [ 50.213360][ T639] down_read+0x9f/0x340 [ 50.213474][ T639] ? blocking_notifier_call_chain+0x50/0x90 [ 50.213662][ T639] ? __pfx_down_read+0x10/0x10 [ 50.213808][ T639] ? __lock_release+0x103/0x460 [ 50.213954][ T639] ? netconsole_netdev_event+0x2c1/0x620 [ 50.214101][ T639] ? __pfx___lock_release+0x10/0x10 [ 50.214248][ T639] blocking_notifier_call_chain+0x50/0x90 [ 50.214396][ T639] __netdev_upper_dev_unlink+0xd9/0x220 [ 50.214545][ T639] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 50.214732][ T639] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 50.214880][ T639] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 50.215062][ T639] ? rtnl_is_locked+0x15/0x20 [ 50.215209][ T639] netdev_upper_dev_unlink+0x71/0xa0 [ 50.215356][ T639] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 50.215538][ T639] ? netconsole_netdev_event+0x2c1/0x620 [ 50.215698][ T639] ? mutex_is_locked+0x1c/0x60 [ 50.215851][ T639] ? rtnl_is_locked+0x15/0x20 [ 50.215999][ T639] ? netdev_master_upper_dev_get+0x13/0x120 [ 50.216180][ T639] vrf_device_event+0x78/0xe0 [vrf] [ 50.216332][ T639] notifier_call_chain+0xcd/0x150 [ 50.216479][ T639] blocking_notifier_call_chain+0x66/0x90 [ 50.216628][ T639] unregister_netdevice_many_notify+0xa7b/0x1580 [ 50.216814][ T639] ? hlock_class+0x4e/0x130 [ 50.216964][ T639] ? mark_lock+0x38/0x3e0 [ 50.217078][ T639] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 50.217261][ T639] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 50.217448][ T639] ? kfree+0xf3/0x330 [ 50.217563][ T639] ? vlan_vid_del+0x310/0x5e0 [ 50.217712][ T639] ? vlan_vid_del+0x310/0x5e0 [ 50.217866][ T639] rtnl_dellink+0x348/0xa40 [ 50.218018][ T639] ? __pfx_rtnl_dellink+0x10/0x10 [ 50.218177][ T639] ? find_held_lock+0x2c/0x110 [ 50.218325][ T639] ? __lock_release+0x103/0x460 [ 50.218470][ T639] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 50.218618][ T639] ? __pfx___lock_release+0x10/0x10 [ 50.218763][ T639] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 50.218911][ T639] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 50.219060][ T639] ? __pfx_rtnl_dellink+0x10/0x10 [ 50.219206][ T639] rtnetlink_rcv_msg+0x712/0xc10 [ 50.219352][ T639] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 50.219498][ T639] ? hlock_class+0x4e/0x130 [ 50.219646][ T639] ? mark_lock+0x38/0x3e0 [ 50.219758][ T639] ? __lock_acquire+0xb9a/0x1680 [ 50.219904][ T639] netlink_rcv_skb+0x130/0x360 [ 50.220053][ T639] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 50.220201][ T639] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 50.220352][ T639] ? netlink_deliver_tap+0x13e/0x340 [ 50.220500][ T639] ? netlink_deliver_tap+0xc3/0x340 [ 50.220647][ T639] netlink_unicast+0x44b/0x710 [ 50.220793][ T639] ? __pfx_netlink_unicast+0x10/0x10 [ 50.220939][ T639] ? find_held_lock+0x2c/0x110 [ 50.221088][ T639] netlink_sendmsg+0x723/0xbe0 [ 50.221236][ T639] ? __pfx_netlink_sendmsg+0x10/0x10 [ 50.221385][ T639] ____sys_sendmsg+0x7ac/0xa10 [ 50.221534][ T639] ? __pfx_____sys_sendmsg+0x10/0x10 [ 50.221679][ T639] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 50.221865][ T639] ___sys_sendmsg+0xee/0x170 [ 50.222013][ T639] ? __pfx____sys_sendmsg+0x10/0x10 [ 50.222161][ T639] ? kasan_save_stack+0x34/0x50 [ 50.222312][ T639] ? kasan_save_stack+0x24/0x50 [ 50.222456][ T639] ? __kasan_record_aux_stack+0x8e/0xa0 [ 50.222606][ T639] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 50.222790][ T639] ? __x64_sys_close+0x7c/0xd0 [ 50.222936][ T639] ? do_syscall_64+0xc1/0x1d0 [ 50.223084][ T639] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.223270][ T639] ? __lock_acquire+0xb9a/0x1680 [ 50.223421][ T639] ? find_held_lock+0x2c/0x110 [ 50.223569][ T639] ? __lock_release+0x103/0x460 [ 50.223717][ T639] ? __virt_addr_valid+0x22b/0x430 [ 50.223867][ T639] ? __pfx___lock_release+0x10/0x10 [ 50.224014][ T639] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 50.224166][ T639] __sys_sendmsg+0x109/0x1a0 [ 50.224312][ T639] ? __pfx___sys_sendmsg+0x10/0x10 [ 50.224461][ T639] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 50.224648][ T639] do_syscall_64+0xc1/0x1d0 [ 50.224798][ T639] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 50.224988][ T639] RIP: 0033:0x7f25387b69a7 [ 50.225143][ T639] 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 [ 50.225665][ T639] RSP: 002b:00007fff445d1288 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 50.225891][ T639] RAX: ffffffffffffffda RBX: 00007fff445d19b0 RCX: 00007f25387b69a7 [ 50.226116][ T639] RDX: 0000000000000000 RSI: 00007fff445d12f0 RDI: 0000000000000005 [ 50.226347][ T639] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 50.226583][ T639] R10: 00007f2538674ef8 R11: 0000000000000246 R12: 0000000000000002 [ 50.226807][ T639] R13: 00000000677900bc R14: 0000000000498600 R15: 0000000000000000 [ 50.227046][ T639] [ 50.245303][ T639] ip (639) used greatest stack depth: 23536 bytes left