[ 13.245093][ T288] 8021q: 802.1Q VLAN Support v1.8 [ 15.127203][ T309] br0: port 1(veth1) entered blocking state [ 15.128190][ T309] br0: port 1(veth1) entered disabled state [ 15.128643][ T309] veth1: entered allmulticast mode [ 15.137852][ T309] veth1: entered promiscuous mode [ 15.251033][ T311] br0: port 2(veth2) entered blocking state [ 15.251823][ T311] br0: port 2(veth2) entered disabled state [ 15.252160][ T311] veth2: entered allmulticast mode [ 15.263205][ T311] veth2: entered promiscuous mode [ 15.544621][ T37] br0: port 1(veth1) entered blocking state [ 15.545338][ T37] br0: port 1(veth1) entered forwarding state [ 15.635597][ T37] br0: port 2(veth2) entered blocking state [ 15.635924][ T37] br0: port 2(veth2) entered forwarding state [ 71.225082][ T580] Mirror/redirect action on [ 78.844518][ T617] br0: port 2(veth2) entered disabled state [ 78.933843][ T618] br0: port 1(veth1) entered disabled state [ 79.009569][ T619] veth2: left allmulticast mode [ 79.009886][ T619] veth2: left promiscuous mode [ 79.010325][ T619] br0: port 2(veth2) entered disabled state [ 79.012217][ T619] veth1: left allmulticast mode [ 79.012480][ T619] veth1: left promiscuous mode [ 79.012863][ T619] br0: port 1(veth1) entered disabled state [ 79.083486][ T619] ip (619) used greatest stack depth: 23968 bytes left [ 79.176492][ T620] [ 79.176615][ T620] ============================================ [ 79.176828][ T620] WARNING: possible recursive locking detected [ 79.177046][ T620] 6.13.0-rc5-virtme #1 Not tainted [ 79.177273][ T620] -------------------------------------------- [ 79.177493][ T620] ip/620 is trying to acquire lock: [ 79.177668][ T620] ffffffffaedd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 79.177973][ T620] [ 79.177973][ T620] but task is already holding lock: [ 79.178194][ T620] ffffffffaedd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 79.178534][ T620] [ 79.178534][ T620] other info that might help us debug this: [ 79.178763][ T620] Possible unsafe locking scenario: [ 79.178763][ T620] [ 79.178979][ T620] CPU0 [ 79.179099][ T620] ---- [ 79.179246][ T620] lock((netdev_chain).rwsem); [ 79.179394][ T620] lock((netdev_chain).rwsem); [ 79.179538][ T620] [ 79.179538][ T620] *** DEADLOCK *** [ 79.179538][ T620] [ 79.179760][ T620] May be due to missing lock nesting notation [ 79.179760][ T620] [ 79.179985][ T620] 2 locks held by ip/620: [ 79.180112][ T620] #0: ffffffffaede7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 79.180438][ T620] #1: ffffffffaedd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 79.180772][ T620] [ 79.180772][ T620] stack backtrace: [ 79.181016][ T620] CPU: 3 UID: 0 PID: 620 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 79.181313][ T620] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 79.181530][ T620] Call Trace: [ 79.181670][ T620] [ 79.181746][ T620] dump_stack_lvl+0x82/0xd0 [ 79.181938][ T620] print_deadlock_bug+0x40a/0x650 [ 79.182121][ T620] validate_chain+0x5bf/0xae0 [ 79.182290][ T620] ? __pfx_validate_chain+0x10/0x10 [ 79.182453][ T620] ? hlock_class+0x4e/0x130 [ 79.182635][ T620] ? mark_lock+0x38/0x3e0 [ 79.182768][ T620] __lock_acquire+0xb9a/0x1680 [ 79.182973][ T620] lock_acquire.part.0+0xeb/0x330 [ 79.183186][ T620] ? blocking_notifier_call_chain+0x50/0x90 [ 79.183452][ T620] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 79.183696][ T620] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 79.183895][ T620] ? trace_lock_acquire+0x14c/0x1f0 [ 79.184070][ T620] ? lock_acquire+0x32/0xc0 [ 79.184271][ T620] ? blocking_notifier_call_chain+0x50/0x90 [ 79.184469][ T620] down_read+0x9f/0x340 [ 79.184584][ T620] ? blocking_notifier_call_chain+0x50/0x90 [ 79.184779][ T620] ? __pfx_down_read+0x10/0x10 [ 79.184971][ T620] ? __lock_release+0x103/0x460 [ 79.185169][ T620] ? netconsole_netdev_event+0x2c1/0x620 [ 79.185387][ T620] ? __pfx___lock_release+0x10/0x10 [ 79.185556][ T620] blocking_notifier_call_chain+0x50/0x90 [ 79.185715][ T620] __netdev_upper_dev_unlink+0xd9/0x220 [ 79.185893][ T620] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 79.186154][ T620] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 79.186392][ T620] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 79.186637][ T620] ? rtnl_is_locked+0x15/0x20 [ 79.186792][ T620] netdev_upper_dev_unlink+0x71/0xa0 [ 79.186983][ T620] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 79.187264][ T620] ? netconsole_netdev_event+0x2c1/0x620 [ 79.187508][ T620] ? mutex_is_locked+0x1c/0x60 [ 79.187696][ T620] ? rtnl_is_locked+0x15/0x20 [ 79.187848][ T620] ? netdev_master_upper_dev_get+0x13/0x120 [ 79.188105][ T620] vrf_device_event+0x78/0xe0 [vrf] [ 79.188263][ T620] notifier_call_chain+0xcd/0x150 [ 79.188477][ T620] blocking_notifier_call_chain+0x66/0x90 [ 79.188645][ T620] unregister_netdevice_many_notify+0xa7b/0x1580 [ 79.188894][ T620] ? __lock_release+0x103/0x460 [ 79.189065][ T620] ? __pfx___lock_release+0x10/0x10 [ 79.189262][ T620] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 79.189462][ T620] ? hlock_class+0x4e/0x130 [ 79.189631][ T620] ? mark_held_locks+0x9e/0xe0 [ 79.189787][ T620] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 79.189943][ T620] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 79.190129][ T620] rtnl_dellink+0x348/0xa40 [ 79.190285][ T620] ? __pfx_rtnl_dellink+0x10/0x10 [ 79.190459][ T620] ? find_held_lock+0x2c/0x110 [ 79.190638][ T620] ? __lock_release+0x103/0x460 [ 79.190797][ T620] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 79.190955][ T620] ? __pfx___lock_release+0x10/0x10 [ 79.191114][ T620] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 79.191272][ T620] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 79.191431][ T620] ? __pfx_rtnl_dellink+0x10/0x10 [ 79.191597][ T620] rtnetlink_rcv_msg+0x712/0xc10 [ 79.191761][ T620] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 79.191916][ T620] ? hlock_class+0x4e/0x130 [ 79.192073][ T620] ? mark_lock+0x38/0x3e0 [ 79.192197][ T620] ? __lock_acquire+0xb9a/0x1680 [ 79.192356][ T620] netlink_rcv_skb+0x130/0x360 [ 79.192521][ T620] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 79.192677][ T620] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 79.192845][ T620] ? netlink_deliver_tap+0x13e/0x340 [ 79.193004][ T620] ? netlink_deliver_tap+0xc3/0x340 [ 79.193160][ T620] netlink_unicast+0x44b/0x710 [ 79.193308][ T620] ? __pfx_netlink_unicast+0x10/0x10 [ 79.193461][ T620] ? find_held_lock+0x2c/0x110 [ 79.193622][ T620] netlink_sendmsg+0x723/0xbe0 [ 79.193772][ T620] ? __pfx_netlink_sendmsg+0x10/0x10 [ 79.193935][ T620] ____sys_sendmsg+0x7ac/0xa10 [ 79.194091][ T620] ? __pfx_____sys_sendmsg+0x10/0x10 [ 79.194249][ T620] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 79.194444][ T620] ___sys_sendmsg+0xee/0x170 [ 79.194604][ T620] ? __pfx____sys_sendmsg+0x10/0x10 [ 79.194752][ T620] ? kasan_save_stack+0x34/0x50 [ 79.194901][ T620] ? kasan_save_stack+0x24/0x50 [ 79.195047][ T620] ? __kasan_record_aux_stack+0x8e/0xa0 [ 79.195196][ T620] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 79.195381][ T620] ? __x64_sys_close+0x7c/0xd0 [ 79.195535][ T620] ? do_syscall_64+0xc1/0x1d0 [ 79.195681][ T620] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.195867][ T620] ? __lock_acquire+0xb9a/0x1680 [ 79.196016][ T620] ? find_held_lock+0x2c/0x110 [ 79.196165][ T620] ? __lock_release+0x103/0x460 [ 79.196317][ T620] ? __virt_addr_valid+0x22b/0x430 [ 79.196467][ T620] ? __pfx___lock_release+0x10/0x10 [ 79.196624][ T620] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 79.196773][ T620] __sys_sendmsg+0x109/0x1a0 [ 79.196922][ T620] ? __pfx___sys_sendmsg+0x10/0x10 [ 79.197070][ T620] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 79.197265][ T620] do_syscall_64+0xc1/0x1d0 [ 79.197427][ T620] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 79.197632][ T620] RIP: 0033:0x7f6bf42a89a7 [ 79.197787][ T620] 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 [ 79.198302][ T620] RSP: 002b:00007ffcc654f3d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 79.198564][ T620] RAX: ffffffffffffffda RBX: 00007ffcc654fb00 RCX: 00007f6bf42a89a7 [ 79.198815][ T620] RDX: 0000000000000000 RSI: 00007ffcc654f440 RDI: 0000000000000005 [ 79.199035][ T620] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 79.199255][ T620] R10: 00007f6bf4166ef8 R11: 0000000000000246 R12: 0000000000000002 [ 79.199487][ T620] R13: 0000000067795360 R14: 0000000000498600 R15: 0000000000000000 [ 79.199716][ T620] [ 79.224737][ T620] ip (620) used greatest stack depth: 23896 bytes left