[ 13.331250][ T289] 8021q: 802.1Q VLAN Support v1.8 [ 15.149997][ T310] br0: port 1(veth1) entered blocking state [ 15.150545][ T310] br0: port 1(veth1) entered disabled state [ 15.151013][ T310] veth1: entered allmulticast mode [ 15.153193][ T310] veth1: entered promiscuous mode [ 15.250835][ T312] br0: port 2(veth2) entered blocking state [ 15.251186][ T312] br0: port 2(veth2) entered disabled state [ 15.251497][ T312] veth2: entered allmulticast mode [ 15.253609][ T312] veth2: entered promiscuous mode [ 15.538233][ T70] br0: port 1(veth1) entered blocking state [ 15.538660][ T70] br0: port 1(veth1) entered forwarding state [ 15.643755][ T40] br0: port 2(veth2) entered blocking state [ 15.644115][ T40] br0: port 2(veth2) entered forwarding state [ 70.921660][ T583] Mirror/redirect action on [ 78.560279][ T619] br0: port 2(veth2) entered disabled state [ 78.633689][ T620] br0: port 1(veth1) entered disabled state [ 78.713669][ T621] veth2: left allmulticast mode [ 78.713895][ T621] veth2: left promiscuous mode [ 78.714234][ T621] br0: port 2(veth2) entered disabled state [ 78.715962][ T621] veth1: left allmulticast mode [ 78.716445][ T621] veth1: left promiscuous mode [ 78.716754][ T621] br0: port 1(veth1) entered disabled state [ 78.867492][ T622] [ 78.867655][ T622] ============================================ [ 78.867846][ T622] WARNING: possible recursive locking detected [ 78.868027][ T622] 6.13.0-rc5-virtme #1 Not tainted [ 78.868199][ T622] -------------------------------------------- [ 78.868390][ T622] ip/622 is trying to acquire lock: [ 78.868535][ T622] ffffffff8e3d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 78.868845][ T622] [ 78.868845][ T622] but task is already holding lock: [ 78.869060][ T622] ffffffff8e3d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 78.869356][ T622] [ 78.869356][ T622] other info that might help us debug this: [ 78.869579][ T622] Possible unsafe locking scenario: [ 78.869579][ T622] [ 78.869799][ T622] CPU0 [ 78.869908][ T622] ---- [ 78.870015][ T622] lock((netdev_chain).rwsem); [ 78.870157][ T622] lock((netdev_chain).rwsem); [ 78.870315][ T622] [ 78.870315][ T622] *** DEADLOCK *** [ 78.870315][ T622] [ 78.870527][ T622] May be due to missing lock nesting notation [ 78.870527][ T622] [ 78.870742][ T622] 2 locks held by ip/622: [ 78.870859][ T622] #0: ffffffff8e3e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 78.871122][ T622] #1: ffffffff8e3d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 78.871418][ T622] [ 78.871418][ T622] stack backtrace: [ 78.871604][ T622] CPU: 0 UID: 0 PID: 622 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 78.871824][ T622] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 78.872003][ T622] Call Trace: [ 78.872114][ T622] [ 78.872191][ T622] dump_stack_lvl+0x82/0xd0 [ 78.872347][ T622] print_deadlock_bug+0x40a/0x650 [ 78.872493][ T622] validate_chain+0x5bf/0xae0 [ 78.872653][ T622] ? __pfx_validate_chain+0x10/0x10 [ 78.872800][ T622] ? hlock_class+0x4e/0x130 [ 78.872944][ T622] ? mark_lock+0x38/0x3e0 [ 78.873056][ T622] __lock_acquire+0xb9a/0x1680 [ 78.873202][ T622] lock_acquire.part.0+0xeb/0x330 [ 78.873345][ T622] ? blocking_notifier_call_chain+0x50/0x90 [ 78.873529][ T622] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 78.873712][ T622] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 78.873858][ T622] ? trace_lock_acquire+0x14c/0x1f0 [ 78.874005][ T622] ? lock_acquire+0x32/0xc0 [ 78.874158][ T622] ? blocking_notifier_call_chain+0x50/0x90 [ 78.874339][ T622] down_read+0x9f/0x340 [ 78.874455][ T622] ? blocking_notifier_call_chain+0x50/0x90 [ 78.874640][ T622] ? __pfx_down_read+0x10/0x10 [ 78.874784][ T622] ? __lock_release+0x103/0x460 [ 78.874929][ T622] ? netconsole_netdev_event+0x2c1/0x620 [ 78.875074][ T622] ? __pfx___lock_release+0x10/0x10 [ 78.875222][ T622] blocking_notifier_call_chain+0x50/0x90 [ 78.875377][ T622] __netdev_upper_dev_unlink+0xd9/0x220 [ 78.875528][ T622] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 78.875706][ T622] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 78.875854][ T622] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 78.876033][ T622] ? rtnl_is_locked+0x15/0x20 [ 78.876179][ T622] netdev_upper_dev_unlink+0x71/0xa0 [ 78.876324][ T622] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 78.876517][ T622] ? netconsole_netdev_event+0x2c1/0x620 [ 78.876665][ T622] ? mutex_is_locked+0x1c/0x60 [ 78.876818][ T622] ? rtnl_is_locked+0x15/0x20 [ 78.876964][ T622] ? netdev_master_upper_dev_get+0x13/0x120 [ 78.877143][ T622] vrf_device_event+0x78/0xe0 [vrf] [ 78.877290][ T622] notifier_call_chain+0xcd/0x150 [ 78.877447][ T622] blocking_notifier_call_chain+0x66/0x90 [ 78.877594][ T622] unregister_netdevice_many_notify+0xa7b/0x1580 [ 78.877778][ T622] ? __lock_release+0x103/0x460 [ 78.877933][ T622] ? __pfx___lock_release+0x10/0x10 [ 78.878079][ T622] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 78.878268][ T622] ? hlock_class+0x4e/0x130 [ 78.878413][ T622] ? mark_held_locks+0x9e/0xe0 [ 78.878567][ T622] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 78.878717][ T622] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 78.878898][ T622] rtnl_dellink+0x348/0xa40 [ 78.879053][ T622] ? __pfx_rtnl_dellink+0x10/0x10 [ 78.879210][ T622] ? find_held_lock+0x2c/0x110 [ 78.879356][ T622] ? __lock_release+0x103/0x460 [ 78.879500][ T622] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 78.879643][ T622] ? __pfx___lock_release+0x10/0x10 [ 78.879787][ T622] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 78.879939][ T622] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 78.880093][ T622] ? __pfx_rtnl_dellink+0x10/0x10 [ 78.880240][ T622] rtnetlink_rcv_msg+0x712/0xc10 [ 78.880384][ T622] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 78.880530][ T622] ? hlock_class+0x4e/0x130 [ 78.880680][ T622] ? mark_lock+0x38/0x3e0 [ 78.880792][ T622] ? __lock_acquire+0xb9a/0x1680 [ 78.880943][ T622] netlink_rcv_skb+0x130/0x360 [ 78.881090][ T622] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 78.881248][ T622] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 78.881396][ T622] ? netlink_deliver_tap+0x13e/0x340 [ 78.881543][ T622] ? netlink_deliver_tap+0xc3/0x340 [ 78.881689][ T622] netlink_unicast+0x44b/0x710 [ 78.881845][ T622] ? __pfx_netlink_unicast+0x10/0x10 [ 78.881996][ T622] ? find_held_lock+0x2c/0x110 [ 78.882157][ T622] netlink_sendmsg+0x723/0xbe0 [ 78.882313][ T622] ? __pfx_netlink_sendmsg+0x10/0x10 [ 78.882460][ T622] ____sys_sendmsg+0x7ac/0xa10 [ 78.882605][ T622] ? __pfx_____sys_sendmsg+0x10/0x10 [ 78.882748][ T622] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 78.882934][ T622] ___sys_sendmsg+0xee/0x170 [ 78.883095][ T622] ? __pfx____sys_sendmsg+0x10/0x10 [ 78.883241][ T622] ? kasan_save_stack+0x34/0x50 [ 78.883386][ T622] ? kasan_save_stack+0x24/0x50 [ 78.883540][ T622] ? __kasan_record_aux_stack+0x8e/0xa0 [ 78.883684][ T622] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 78.883867][ T622] ? __x64_sys_close+0x7c/0xd0 [ 78.884013][ T622] ? do_syscall_64+0xc1/0x1d0 [ 78.884164][ T622] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 78.884345][ T622] ? __lock_acquire+0xb9a/0x1680 [ 78.884500][ T622] ? find_held_lock+0x2c/0x110 [ 78.884654][ T622] ? __lock_release+0x103/0x460 [ 78.884797][ T622] ? __virt_addr_valid+0x22b/0x430 [ 78.884942][ T622] ? __pfx___lock_release+0x10/0x10 [ 78.885100][ T622] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 78.885253][ T622] __sys_sendmsg+0x109/0x1a0 [ 78.885397][ T622] ? __pfx___sys_sendmsg+0x10/0x10 [ 78.885545][ T622] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 78.885730][ T622] do_syscall_64+0xc1/0x1d0 [ 78.885876][ T622] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 78.886054][ T622] RIP: 0033:0x7fd2bb3959a7 [ 78.886207][ T622] 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 [ 78.886722][ T622] RSP: 002b:00007ffd94597f68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 78.886941][ T622] RAX: ffffffffffffffda RBX: 00007ffd94598690 RCX: 00007fd2bb3959a7 [ 78.887159][ T622] RDX: 0000000000000000 RSI: 00007ffd94597fd0 RDI: 0000000000000005 [ 78.887400][ T622] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 78.887633][ T622] R10: 00007fd2bb253ef8 R11: 0000000000000246 R12: 0000000000000002 [ 78.887857][ T622] R13: 0000000067790024 R14: 0000000000498600 R15: 0000000000000000 [ 78.888087][ T622]