[ 12.770323][ T287] 8021q: 802.1Q VLAN Support v1.8 [ 14.501911][ T309] br0: port 1(veth1) entered blocking state [ 14.502327][ T309] br0: port 1(veth1) entered disabled state [ 14.502704][ T309] veth1: entered allmulticast mode [ 14.504684][ T309] veth1: entered promiscuous mode [ 14.575473][ T311] br0: port 2(veth2) entered blocking state [ 14.575760][ T311] br0: port 2(veth2) entered disabled state [ 14.576022][ T311] veth2: entered allmulticast mode [ 14.578338][ T311] veth2: entered promiscuous mode [ 14.803938][ T37] br0: port 1(veth1) entered blocking state [ 14.804297][ T37] br0: port 1(veth1) entered forwarding state [ 14.884367][ T40] br0: port 2(veth2) entered blocking state [ 14.884689][ T40] br0: port 2(veth2) entered forwarding state [ 69.375365][ T582] Mirror/redirect action on [ 69.396302][ T579] tc (579) used greatest stack depth: 23968 bytes left [ 76.966659][ T618] br0: port 2(veth2) entered disabled state [ 76.974477][ T618] ip (618) used greatest stack depth: 23632 bytes left [ 77.041716][ T619] br0: port 1(veth1) entered disabled state [ 77.115802][ T620] veth2: left allmulticast mode [ 77.116038][ T620] veth2: left promiscuous mode [ 77.116376][ T620] br0: port 2(veth2) entered disabled state [ 77.118601][ T620] veth1: left allmulticast mode [ 77.118809][ T620] veth1: left promiscuous mode [ 77.119112][ T620] br0: port 1(veth1) entered disabled state [ 77.288077][ T621] [ 77.288235][ T621] ============================================ [ 77.288427][ T621] WARNING: possible recursive locking detected [ 77.288609][ T621] 6.13.0-rc5-virtme #1 Not tainted [ 77.288757][ T621] -------------------------------------------- [ 77.288937][ T621] ip/621 is trying to acquire lock: [ 77.289115][ T621] ffffffffb81d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 77.289424][ T621] [ 77.289424][ T621] but task is already holding lock: [ 77.289643][ T621] ffffffffb81d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 77.289939][ T621] [ 77.289939][ T621] other info that might help us debug this: [ 77.290151][ T621] Possible unsafe locking scenario: [ 77.290151][ T621] [ 77.290362][ T621] CPU0 [ 77.290473][ T621] ---- [ 77.290586][ T621] lock((netdev_chain).rwsem); [ 77.290739][ T621] lock((netdev_chain).rwsem); [ 77.290886][ T621] [ 77.290886][ T621] *** DEADLOCK *** [ 77.290886][ T621] [ 77.291112][ T621] May be due to missing lock nesting notation [ 77.291112][ T621] [ 77.291327][ T621] 2 locks held by ip/621: [ 77.291438][ T621] #0: ffffffffb81e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 77.291701][ T621] #1: ffffffffb81d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 77.292003][ T621] [ 77.292003][ T621] stack backtrace: [ 77.292179][ T621] CPU: 2 UID: 0 PID: 621 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 77.292397][ T621] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 77.292583][ T621] Call Trace: [ 77.292694][ T621] [ 77.292769][ T621] dump_stack_lvl+0x82/0xd0 [ 77.292920][ T621] print_deadlock_bug+0x40a/0x650 [ 77.293074][ T621] validate_chain+0x5bf/0xae0 [ 77.293225][ T621] ? __pfx_validate_chain+0x10/0x10 [ 77.293373][ T621] ? hlock_class+0x4e/0x130 [ 77.293517][ T621] ? mark_lock+0x38/0x3e0 [ 77.293631][ T621] __lock_acquire+0xb9a/0x1680 [ 77.293780][ T621] lock_acquire.part.0+0xeb/0x330 [ 77.293928][ T621] ? blocking_notifier_call_chain+0x50/0x90 [ 77.294110][ T621] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 77.294300][ T621] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 77.294446][ T621] ? trace_lock_acquire+0x14c/0x1f0 [ 77.294593][ T621] ? lock_acquire+0x32/0xc0 [ 77.294738][ T621] ? blocking_notifier_call_chain+0x50/0x90 [ 77.294920][ T621] down_read+0x9f/0x340 [ 77.295033][ T621] ? blocking_notifier_call_chain+0x50/0x90 [ 77.295218][ T621] ? __pfx_down_read+0x10/0x10 [ 77.295364][ T621] ? __lock_release+0x103/0x460 [ 77.295513][ T621] ? netconsole_netdev_event+0x2c1/0x620 [ 77.295659][ T621] ? __pfx___lock_release+0x10/0x10 [ 77.295807][ T621] blocking_notifier_call_chain+0x50/0x90 [ 77.295955][ T621] __netdev_upper_dev_unlink+0xd9/0x220 [ 77.296103][ T621] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 77.296288][ T621] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 77.296436][ T621] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 77.296617][ T621] ? rtnl_is_locked+0x15/0x20 [ 77.296764][ T621] netdev_upper_dev_unlink+0x71/0xa0 [ 77.296911][ T621] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 77.297091][ T621] ? netconsole_netdev_event+0x2c1/0x620 [ 77.297239][ T621] ? mutex_is_locked+0x1c/0x60 [ 77.297389][ T621] ? rtnl_is_locked+0x15/0x20 [ 77.297533][ T621] ? netdev_master_upper_dev_get+0x13/0x120 [ 77.297714][ T621] vrf_device_event+0x78/0xe0 [vrf] [ 77.297864][ T621] notifier_call_chain+0xcd/0x150 [ 77.298024][ T621] blocking_notifier_call_chain+0x66/0x90 [ 77.298169][ T621] unregister_netdevice_many_notify+0xa7b/0x1580 [ 77.298351][ T621] ? __lock_release+0x103/0x460 [ 77.298502][ T621] ? __pfx___lock_release+0x10/0x10 [ 77.298649][ T621] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 77.298829][ T621] ? hlock_class+0x4e/0x130 [ 77.298977][ T621] ? mark_held_locks+0x9e/0xe0 [ 77.299124][ T621] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 77.299268][ T621] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 77.299455][ T621] rtnl_dellink+0x348/0xa40 [ 77.299602][ T621] ? __pfx_rtnl_dellink+0x10/0x10 [ 77.299763][ T621] ? find_held_lock+0x2c/0x110 [ 77.299908][ T621] ? __lock_release+0x103/0x460 [ 77.300054][ T621] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 77.300198][ T621] ? __pfx___lock_release+0x10/0x10 [ 77.300347][ T621] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 77.300493][ T621] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 77.300648][ T621] ? __pfx_rtnl_dellink+0x10/0x10 [ 77.300795][ T621] rtnetlink_rcv_msg+0x712/0xc10 [ 77.300942][ T621] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 77.301086][ T621] ? hlock_class+0x4e/0x130 [ 77.301232][ T621] ? mark_lock+0x38/0x3e0 [ 77.301345][ T621] ? __lock_acquire+0xb9a/0x1680 [ 77.301490][ T621] netlink_rcv_skb+0x130/0x360 [ 77.301647][ T621] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 77.301792][ T621] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 77.301942][ T621] ? netlink_deliver_tap+0x13e/0x340 [ 77.302090][ T621] ? netlink_deliver_tap+0xc3/0x340 [ 77.302238][ T621] netlink_unicast+0x44b/0x710 [ 77.302384][ T621] ? __pfx_netlink_unicast+0x10/0x10 [ 77.302533][ T621] ? find_held_lock+0x2c/0x110 [ 77.302685][ T621] netlink_sendmsg+0x723/0xbe0 [ 77.302830][ T621] ? __pfx_netlink_sendmsg+0x10/0x10 [ 77.302979][ T621] ____sys_sendmsg+0x7ac/0xa10 [ 77.303131][ T621] ? __pfx_____sys_sendmsg+0x10/0x10 [ 77.303276][ T621] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 77.303461][ T621] ___sys_sendmsg+0xee/0x170 [ 77.303608][ T621] ? __pfx____sys_sendmsg+0x10/0x10 [ 77.303760][ T621] ? kasan_save_stack+0x34/0x50 [ 77.303906][ T621] ? kasan_save_stack+0x24/0x50 [ 77.304054][ T621] ? __kasan_record_aux_stack+0x8e/0xa0 [ 77.304203][ T621] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 77.304394][ T621] ? __x64_sys_close+0x7c/0xd0 [ 77.304540][ T621] ? do_syscall_64+0xc1/0x1d0 [ 77.304687][ T621] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.304874][ T621] ? __lock_acquire+0xb9a/0x1680 [ 77.305022][ T621] ? find_held_lock+0x2c/0x110 [ 77.305171][ T621] ? __lock_release+0x103/0x460 [ 77.305315][ T621] ? __virt_addr_valid+0x22b/0x430 [ 77.305466][ T621] ? __pfx___lock_release+0x10/0x10 [ 77.305616][ T621] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 77.305765][ T621] __sys_sendmsg+0x109/0x1a0 [ 77.305913][ T621] ? __pfx___sys_sendmsg+0x10/0x10 [ 77.306065][ T621] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 77.306264][ T621] do_syscall_64+0xc1/0x1d0 [ 77.306408][ T621] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.306591][ T621] RIP: 0033:0x7f04664999a7 [ 77.306751][ T621] 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 [ 77.307280][ T621] RSP: 002b:00007fff8cc42de8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 77.307503][ T621] RAX: ffffffffffffffda RBX: 00007fff8cc43510 RCX: 00007f04664999a7 [ 77.307723][ T621] RDX: 0000000000000000 RSI: 00007fff8cc42e50 RDI: 0000000000000005 [ 77.307958][ T621] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 77.308187][ T621] R10: 00007f0466357ef8 R11: 0000000000000246 R12: 0000000000000002 [ 77.308407][ T621] R13: 0000000067795690 R14: 0000000000498600 R15: 0000000000000000 [ 77.308638][ T621]