[ 11.798915][ T251] ip (251) used greatest stack depth: 24336 bytes left [ 14.027474][ T309] 8021q: 802.1Q VLAN Support v1.8 [ 17.269910][ T379] GACT probability NOT on [ 18.615310][ T414] br10: port 1(veth1.10) entered blocking state [ 18.615786][ T414] br10: port 1(veth1.10) entered disabled state [ 18.616211][ T414] veth1.10: entered allmulticast mode [ 18.616433][ T414] veth1: entered allmulticast mode [ 18.619225][ T414] veth1.10: entered promiscuous mode [ 18.619478][ T414] veth1: entered promiscuous mode [ 19.059194][ T431] br11: port 1(veth1.11) entered blocking state [ 19.059471][ T431] br11: port 1(veth1.11) entered disabled state [ 19.059740][ T431] veth1.11: entered allmulticast mode [ 19.062225][ T431] veth1.11: entered promiscuous mode [ 19.933409][ T461] br10: port 2(veth2.10) entered blocking state [ 19.933721][ T461] br10: port 2(veth2.10) entered disabled state [ 19.934003][ T461] veth2.10: entered allmulticast mode [ 19.934198][ T461] veth2: entered allmulticast mode [ 19.937379][ T461] veth2.10: entered promiscuous mode [ 19.937691][ T461] veth2: entered promiscuous mode [ 20.469565][ T478] br11: port 2(veth2.11) entered blocking state [ 20.469837][ T478] br11: port 2(veth2.11) entered disabled state [ 20.470103][ T478] veth2.11: entered allmulticast mode [ 20.472487][ T478] veth2.11: entered promiscuous mode [ 20.863148][ T490] br10: port 2(veth2.10) entered blocking state [ 20.863769][ T490] br10: port 2(veth2.10) entered forwarding state [ 20.864849][ T490] br10: port 1(veth1.10) entered blocking state [ 20.865281][ T490] br10: port 1(veth1.10) entered forwarding state [ 21.004885][ T495] br11: port 2(veth2.11) entered blocking state [ 21.005340][ T495] br11: port 2(veth2.11) entered forwarding state [ 21.005937][ T495] br11: port 1(veth1.11) entered blocking state [ 21.006283][ T495] br11: port 1(veth1.11) entered forwarding state [ 102.117386][ T838] br11: port 2(veth2.11) entered disabled state [ 102.118433][ T838] br11: port 1(veth1.11) entered disabled state [ 102.213867][ T840] br10: port 2(veth2.10) entered disabled state [ 102.214500][ T840] br10: port 1(veth1.10) entered disabled state [ 102.408707][ T844] veth2.11: left allmulticast mode [ 102.408973][ T844] veth2.11: left promiscuous mode [ 102.409316][ T844] br11: port 2(veth2.11) entered disabled state [ 102.625467][ T848] veth2: left allmulticast mode [ 102.625717][ T848] veth2: left promiscuous mode [ 102.725578][ T852] veth2.10: left allmulticast mode [ 102.725804][ T852] veth2.10: left promiscuous mode [ 102.726133][ T852] br10: port 2(veth2.10) entered disabled state [ 103.278035][ T863] veth1.11: left allmulticast mode [ 103.278324][ T863] veth1.11: left promiscuous mode [ 103.278654][ T863] br11: port 1(veth1.11) entered disabled state [ 103.512310][ T867] veth1: left allmulticast mode [ 103.512652][ T867] veth1: left promiscuous mode [ 103.611325][ T869] veth1.10: left allmulticast mode [ 103.611600][ T869] veth1.10: left promiscuous mode [ 103.611924][ T869] br10: port 1(veth1.10) entered disabled state [ 104.495952][ T883] [ 104.496081][ T883] ============================================ [ 104.496279][ T883] WARNING: possible recursive locking detected [ 104.496462][ T883] 6.13.0-rc5-virtme #1 Not tainted [ 104.496612][ T883] -------------------------------------------- [ 104.496789][ T883] ip/883 is trying to acquire lock: [ 104.496934][ T883] ffffffffaa3d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 104.497249][ T883] [ 104.497249][ T883] but task is already holding lock: [ 104.497463][ T883] ffffffffaa3d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 104.497762][ T883] [ 104.497762][ T883] other info that might help us debug this: [ 104.497976][ T883] Possible unsafe locking scenario: [ 104.497976][ T883] [ 104.498188][ T883] CPU0 [ 104.498298][ T883] ---- [ 104.498410][ T883] lock((netdev_chain).rwsem); [ 104.498560][ T883] lock((netdev_chain).rwsem); [ 104.498710][ T883] [ 104.498710][ T883] *** DEADLOCK *** [ 104.498710][ T883] [ 104.498932][ T883] May be due to missing lock nesting notation [ 104.498932][ T883] [ 104.499141][ T883] 2 locks held by ip/883: [ 104.499252][ T883] #0: ffffffffaa3e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 104.499517][ T883] #1: ffffffffaa3d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 104.499819][ T883] [ 104.499819][ T883] stack backtrace: [ 104.500001][ T883] CPU: 3 UID: 0 PID: 883 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 104.500227][ T883] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 104.500414][ T883] Call Trace: [ 104.500525][ T883] [ 104.500602][ T883] dump_stack_lvl+0x82/0xd0 [ 104.500755][ T883] print_deadlock_bug+0x40a/0x650 [ 104.500903][ T883] validate_chain+0x5bf/0xae0 [ 104.501051][ T883] ? __pfx_validate_chain+0x10/0x10 [ 104.501203][ T883] ? hlock_class+0x4e/0x130 [ 104.501347][ T883] ? mark_lock+0x38/0x3e0 [ 104.501463][ T883] __lock_acquire+0xb9a/0x1680 [ 104.501667][ T883] lock_acquire.part.0+0xeb/0x330 [ 104.501815][ T883] ? blocking_notifier_call_chain+0x50/0x90 [ 104.502002][ T883] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 104.502186][ T883] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 104.502333][ T883] ? trace_lock_acquire+0x14c/0x1f0 [ 104.502481][ T883] ? lock_acquire+0x32/0xc0 [ 104.502630][ T883] ? blocking_notifier_call_chain+0x50/0x90 [ 104.502811][ T883] down_read+0x9f/0x340 [ 104.502926][ T883] ? blocking_notifier_call_chain+0x50/0x90 [ 104.503109][ T883] ? __pfx_down_read+0x10/0x10 [ 104.503254][ T883] ? __lock_release+0x103/0x460 [ 104.503399][ T883] ? netconsole_netdev_event+0x2c1/0x620 [ 104.503546][ T883] ? __pfx___lock_release+0x10/0x10 [ 104.503699][ T883] blocking_notifier_call_chain+0x50/0x90 [ 104.503845][ T883] __netdev_upper_dev_unlink+0xd9/0x220 [ 104.503999][ T883] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 104.504179][ T883] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 104.504326][ T883] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 104.504505][ T883] ? rtnl_is_locked+0x15/0x20 [ 104.504652][ T883] netdev_upper_dev_unlink+0x71/0xa0 [ 104.504803][ T883] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 104.504985][ T883] ? netconsole_netdev_event+0x2c1/0x620 [ 104.505136][ T883] ? mutex_is_locked+0x1c/0x60 [ 104.505282][ T883] ? rtnl_is_locked+0x15/0x20 [ 104.505427][ T883] ? netdev_master_upper_dev_get+0x13/0x120 [ 104.505608][ T883] vrf_device_event+0x78/0xe0 [vrf] [ 104.505763][ T883] notifier_call_chain+0xcd/0x150 [ 104.505914][ T883] blocking_notifier_call_chain+0x66/0x90 [ 104.506061][ T883] unregister_netdevice_many_notify+0xa7b/0x1580 [ 104.506241][ T883] ? hlock_class+0x4e/0x130 [ 104.506386][ T883] ? mark_lock+0x38/0x3e0 [ 104.506499][ T883] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 104.506681][ T883] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 104.506866][ T883] ? kfree+0xf3/0x330 [ 104.506978][ T883] ? vlan_vid_del+0x310/0x5e0 [ 104.507126][ T883] ? vlan_vid_del+0x310/0x5e0 [ 104.507272][ T883] rtnl_dellink+0x348/0xa40 [ 104.507420][ T883] ? __pfx_rtnl_dellink+0x10/0x10 [ 104.507580][ T883] ? find_held_lock+0x2c/0x110 [ 104.507728][ T883] ? __lock_release+0x103/0x460 [ 104.507874][ T883] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 104.508027][ T883] ? __pfx___lock_release+0x10/0x10 [ 104.508172][ T883] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 104.508321][ T883] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 104.508467][ T883] ? __pfx_rtnl_dellink+0x10/0x10 [ 104.508615][ T883] rtnetlink_rcv_msg+0x712/0xc10 [ 104.508760][ T883] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 104.508907][ T883] ? hlock_class+0x4e/0x130 [ 104.509058][ T883] ? mark_lock+0x38/0x3e0 [ 104.509170][ T883] ? __lock_acquire+0xb9a/0x1680 [ 104.509316][ T883] netlink_rcv_skb+0x130/0x360 [ 104.509461][ T883] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 104.509607][ T883] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 104.509759][ T883] ? netlink_deliver_tap+0x13e/0x340 [ 104.509907][ T883] ? netlink_deliver_tap+0xc3/0x340 [ 104.510062][ T883] netlink_unicast+0x44b/0x710 [ 104.510209][ T883] ? __pfx_netlink_unicast+0x10/0x10 [ 104.510357][ T883] ? find_held_lock+0x2c/0x110 [ 104.510505][ T883] netlink_sendmsg+0x723/0xbe0 [ 104.510650][ T883] ? __pfx_netlink_sendmsg+0x10/0x10 [ 104.510800][ T883] ____sys_sendmsg+0x7ac/0xa10 [ 104.510948][ T883] ? __pfx_____sys_sendmsg+0x10/0x10 [ 104.511093][ T883] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 104.511279][ T883] ___sys_sendmsg+0xee/0x170 [ 104.511426][ T883] ? __pfx____sys_sendmsg+0x10/0x10 [ 104.511588][ T883] ? kasan_save_stack+0x34/0x50 [ 104.511736][ T883] ? kasan_save_stack+0x24/0x50 [ 104.511882][ T883] ? __kasan_record_aux_stack+0x8e/0xa0 [ 104.512038][ T883] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 104.512219][ T883] ? __x64_sys_close+0x7c/0xd0 [ 104.512371][ T883] ? do_syscall_64+0xc1/0x1d0 [ 104.512520][ T883] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 104.512703][ T883] ? __lock_acquire+0xb9a/0x1680 [ 104.512850][ T883] ? find_held_lock+0x2c/0x110 [ 104.512995][ T883] ? __lock_release+0x103/0x460 [ 104.513140][ T883] ? __virt_addr_valid+0x22b/0x430 [ 104.513288][ T883] ? __pfx___lock_release+0x10/0x10 [ 104.513437][ T883] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 104.513586][ T883] __sys_sendmsg+0x109/0x1a0 [ 104.513734][ T883] ? __pfx___sys_sendmsg+0x10/0x10 [ 104.513880][ T883] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 104.514067][ T883] do_syscall_64+0xc1/0x1d0 [ 104.514213][ T883] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 104.514395][ T883] RIP: 0033:0x7fcc1cb1f9a7 [ 104.514554][ T883] 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 [ 104.515070][ T883] RSP: 002b:00007fffa82ff6c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 104.515295][ T883] RAX: ffffffffffffffda RBX: 00007fffa82ffdf0 RCX: 00007fcc1cb1f9a7 [ 104.515520][ T883] RDX: 0000000000000000 RSI: 00007fffa82ff730 RDI: 0000000000000005 [ 104.515739][ T883] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 104.515956][ T883] R10: 00007fcc1c9ddef8 R11: 0000000000000246 R12: 0000000000000002 [ 104.516174][ T883] R13: 000000006778ffa8 R14: 0000000000498600 R15: 0000000000000000 [ 104.516401][ T883] [ 104.541468][ T883] ip (883) used greatest stack depth: 23704 bytes left