[ 11.498400][ T261] ip (261) used greatest stack depth: 23552 bytes left [ 13.288839][ T287] 8021q: 802.1Q VLAN Support v1.8 [ 15.119476][ T308] br0: port 1(veth1) entered blocking state [ 15.119993][ T308] br0: port 1(veth1) entered disabled state [ 15.120416][ T308] veth1: entered allmulticast mode [ 15.122572][ T308] veth1: entered promiscuous mode [ 15.223428][ T310] br0: port 2(veth2) entered blocking state [ 15.223868][ T310] br0: port 2(veth2) entered disabled state [ 15.224326][ T310] veth2: entered allmulticast mode [ 15.227738][ T310] veth2: entered promiscuous mode [ 15.512847][ T40] br0: port 1(veth1) entered blocking state [ 15.513336][ T40] br0: port 1(veth1) entered forwarding state [ 15.604535][ T40] br0: port 2(veth2) entered blocking state [ 15.604857][ T40] br0: port 2(veth2) entered forwarding state [ 71.878098][ T580] Mirror/redirect action on [ 79.563872][ T616] br0: port 2(veth2) entered disabled state [ 79.651546][ T617] br0: port 1(veth1) entered disabled state [ 79.755481][ T618] veth2: left allmulticast mode [ 79.755758][ T618] veth2: left promiscuous mode [ 79.756109][ T618] br0: port 2(veth2) entered disabled state [ 79.758232][ T618] veth1: left allmulticast mode [ 79.758474][ T618] veth1: left promiscuous mode [ 79.758950][ T618] br0: port 1(veth1) entered disabled state [ 79.931441][ T619] [ 79.931605][ T619] ============================================ [ 79.931818][ T619] WARNING: possible recursive locking detected [ 79.932015][ T619] 6.13.0-rc5-virtme #1 Not tainted [ 79.932186][ T619] -------------------------------------------- [ 79.932391][ T619] ip/619 is trying to acquire lock: [ 79.932553][ T619] ffffffffb8dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 79.932916][ T619] [ 79.932916][ T619] but task is already holding lock: [ 79.933155][ T619] ffffffffb8dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 79.933485][ T619] [ 79.933485][ T619] other info that might help us debug this: [ 79.933736][ T619] Possible unsafe locking scenario: [ 79.933736][ T619] [ 79.933972][ T619] CPU0 [ 79.934092][ T619] ---- [ 79.934217][ T619] lock((netdev_chain).rwsem); [ 79.934380][ T619] lock((netdev_chain).rwsem); [ 79.934539][ T619] [ 79.934539][ T619] *** DEADLOCK *** [ 79.934539][ T619] [ 79.934773][ T619] May be due to missing lock nesting notation [ 79.934773][ T619] [ 79.935014][ T619] 2 locks held by ip/619: [ 79.935137][ T619] #0: ffffffffb8de7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 79.935432][ T619] #1: ffffffffb8dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 79.935760][ T619] [ 79.935760][ T619] stack backtrace: [ 79.935962][ T619] CPU: 0 UID: 0 PID: 619 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 79.936206][ T619] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 79.936409][ T619] Call Trace: [ 79.936535][ T619] [ 79.936620][ T619] dump_stack_lvl+0x82/0xd0 [ 79.936790][ T619] print_deadlock_bug+0x40a/0x650 [ 79.936954][ T619] validate_chain+0x5bf/0xae0 [ 79.937116][ T619] ? __pfx_validate_chain+0x10/0x10 [ 79.937287][ T619] ? hlock_class+0x4e/0x130 [ 79.937452][ T619] ? mark_lock+0x38/0x3e0 [ 79.937578][ T619] __lock_acquire+0xb9a/0x1680 [ 79.937743][ T619] lock_acquire.part.0+0xeb/0x330 [ 79.937905][ T619] ? blocking_notifier_call_chain+0x50/0x90 [ 79.938148][ T619] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 79.938356][ T619] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 79.938525][ T619] ? trace_lock_acquire+0x14c/0x1f0 [ 79.938686][ T619] ? lock_acquire+0x32/0xc0 [ 79.938850][ T619] ? blocking_notifier_call_chain+0x50/0x90 [ 79.939053][ T619] down_read+0x9f/0x340 [ 79.939180][ T619] ? blocking_notifier_call_chain+0x50/0x90 [ 79.939382][ T619] ? __pfx_down_read+0x10/0x10 [ 79.939545][ T619] ? __lock_release+0x103/0x460 [ 79.939712][ T619] ? netconsole_netdev_event+0x2c1/0x620 [ 79.939878][ T619] ? __pfx___lock_release+0x10/0x10 [ 79.940042][ T619] blocking_notifier_call_chain+0x50/0x90 [ 79.940210][ T619] __netdev_upper_dev_unlink+0xd9/0x220 [ 79.940375][ T619] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 79.940574][ T619] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 79.940743][ T619] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 79.940944][ T619] ? rtnl_is_locked+0x15/0x20 [ 79.941110][ T619] netdev_upper_dev_unlink+0x71/0xa0 [ 79.941270][ T619] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 79.941474][ T619] ? netconsole_netdev_event+0x2c1/0x620 [ 79.941637][ T619] ? mutex_is_locked+0x1c/0x60 [ 79.941801][ T619] ? rtnl_is_locked+0x15/0x20 [ 79.941989][ T619] ? netdev_master_upper_dev_get+0x13/0x120 [ 79.942205][ T619] vrf_device_event+0x78/0xe0 [vrf] [ 79.942373][ T619] notifier_call_chain+0xcd/0x150 [ 79.942534][ T619] blocking_notifier_call_chain+0x66/0x90 [ 79.942695][ T619] unregister_netdevice_many_notify+0xa7b/0x1580 [ 79.942897][ T619] ? __lock_release+0x103/0x460 [ 79.943072][ T619] ? __pfx___lock_release+0x10/0x10 [ 79.943239][ T619] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 79.943442][ T619] ? hlock_class+0x4e/0x130 [ 79.943607][ T619] ? mark_held_locks+0x9e/0xe0 [ 79.943770][ T619] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 79.943935][ T619] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 79.944138][ T619] rtnl_dellink+0x348/0xa40 [ 79.944304][ T619] ? __pfx_rtnl_dellink+0x10/0x10 [ 79.944486][ T619] ? find_held_lock+0x2c/0x110 [ 79.944652][ T619] ? __lock_release+0x103/0x460 [ 79.944814][ T619] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 79.944975][ T619] ? __pfx___lock_release+0x10/0x10 [ 79.945137][ T619] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 79.945301][ T619] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 79.945467][ T619] ? __pfx_rtnl_dellink+0x10/0x10 [ 79.945633][ T619] rtnetlink_rcv_msg+0x712/0xc10 [ 79.945792][ T619] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 79.945969][ T619] ? hlock_class+0x4e/0x130 [ 79.946142][ T619] ? mark_lock+0x38/0x3e0 [ 79.946268][ T619] ? __lock_acquire+0xb9a/0x1680 [ 79.946434][ T619] netlink_rcv_skb+0x130/0x360 [ 79.946599][ T619] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 79.946765][ T619] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 79.946935][ T619] ? netlink_deliver_tap+0x13e/0x340 [ 79.947097][ T619] ? netlink_deliver_tap+0xc3/0x340 [ 79.947261][ T619] netlink_unicast+0x44b/0x710 [ 79.947423][ T619] ? __pfx_netlink_unicast+0x10/0x10 [ 79.947587][ T619] ? find_held_lock+0x2c/0x110 [ 79.947751][ T619] netlink_sendmsg+0x723/0xbe0 [ 79.947910][ T619] ? __pfx_netlink_sendmsg+0x10/0x10 [ 79.948080][ T619] ____sys_sendmsg+0x7ac/0xa10 [ 79.948246][ T619] ? __pfx_____sys_sendmsg+0x10/0x10 [ 79.948408][ T619] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 79.948614][ T619] ___sys_sendmsg+0xee/0x170 [ 79.948780][ T619] ? __pfx____sys_sendmsg+0x10/0x10 [ 79.948944][ T619] ? kasan_save_stack+0x34/0x50 [ 79.949108][ T619] ? kasan_save_stack+0x24/0x50 [ 79.949274][ T619] ? __kasan_record_aux_stack+0x8e/0xa0 [ 79.949438][ T619] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 79.949640][ T619] ? __x64_sys_close+0x7c/0xd0 [ 79.949803][ T619] ? do_syscall_64+0xc1/0x1d0 [ 79.949984][ T619] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.950192][ T619] ? __lock_acquire+0xb9a/0x1680 [ 79.950355][ T619] ? find_held_lock+0x2c/0x110 [ 79.950526][ T619] ? __lock_release+0x103/0x460 [ 79.950685][ T619] ? __virt_addr_valid+0x22b/0x430 [ 79.950848][ T619] ? __pfx___lock_release+0x10/0x10 [ 79.951009][ T619] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 79.951170][ T619] __sys_sendmsg+0x109/0x1a0 [ 79.951330][ T619] ? __pfx___sys_sendmsg+0x10/0x10 [ 79.951490][ T619] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 79.951701][ T619] do_syscall_64+0xc1/0x1d0 [ 79.951861][ T619] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.952065][ T619] RIP: 0033:0x7fefe1a589a7 [ 79.952324][ T619] 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 [ 79.953165][ T619] RSP: 002b:00007ffd22ed8278 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.953480][ T619] RAX: ffffffffffffffda RBX: 00007ffd22ed89a0 RCX: 00007fefe1a589a7 [ 79.953825][ T619] RDX: 0000000000000000 RSI: 00007ffd22ed82e0 RDI: 0000000000000005 [ 79.954166][ T619] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 79.954552][ T619] R10: 00007fefe1916ef8 R11: 0000000000000246 R12: 0000000000000002 [ 79.954933][ T619] R13: 0000000067792ac4 R14: 0000000000498600 R15: 0000000000000000 [ 79.955317][ T619]