[ 346.717808][T14412] 8021q: 802.1Q VLAN Support v1.8 [ 349.522695][T14446] br0: port 1(veth1) entered blocking state [ 349.523138][T14446] br0: port 1(veth1) entered disabled state [ 349.524200][T14446] veth1: entered allmulticast mode [ 349.527450][T14446] veth1: entered promiscuous mode [ 349.674277][ T40] br0: port 1(veth1) entered blocking state [ 349.674675][ T40] br0: port 1(veth1) entered forwarding state [ 349.869773][T14450] br0: port 2(veth2) entered blocking state [ 349.870306][T14450] br0: port 2(veth2) entered disabled state [ 349.870589][T14450] veth2: entered allmulticast mode [ 349.872481][T14450] veth2: entered promiscuous mode [ 349.946206][ T40] br0: port 2(veth2) entered blocking state [ 349.946593][ T40] br0: port 2(veth2) entered forwarding state [ 432.797416][T16234] br0: port 2(veth2) entered disabled state [ 432.911173][T16235] veth2: left allmulticast mode [ 432.911591][T16235] veth2: left promiscuous mode [ 432.912113][T16235] br0: port 2(veth2) entered disabled state [ 433.044989][T16236] br0: port 1(veth1) entered disabled state [ 433.162254][T16237] veth1: left allmulticast mode [ 433.162628][T16237] veth1: left promiscuous mode [ 433.163070][T16237] br0: port 1(veth1) entered disabled state [ 434.044635][T16255] br0: port 1(veth1) entered blocking state [ 434.045134][T16255] br0: port 1(veth1) entered disabled state [ 434.045628][T16255] veth1: entered allmulticast mode [ 434.048963][T16255] veth1: entered promiscuous mode [ 434.146396][ T40] br0: port 1(veth1) entered blocking state [ 434.146763][ T40] br0: port 1(veth1) entered forwarding state [ 434.512941][T16260] br0: port 2(veth2) entered blocking state [ 434.513461][T16260] br0: port 2(veth2) entered disabled state [ 434.513956][T16260] veth2: entered allmulticast mode [ 434.517169][T16260] veth2: entered promiscuous mode [ 434.618799][ T37] br0: port 2(veth2) entered blocking state [ 434.619112][ T37] br0: port 2(veth2) entered forwarding state [ 512.620538][T18053] br0: port 2(veth2) entered disabled state [ 512.739626][T18054] veth2: left allmulticast mode [ 512.740039][T18054] veth2: left promiscuous mode [ 512.740582][T18054] br0: port 2(veth2) entered disabled state [ 512.850203][T18055] br0: port 1(veth1) entered disabled state [ 512.947351][T18056] veth1: left allmulticast mode [ 512.947738][T18056] veth1: left promiscuous mode [ 512.948139][T18056] br0: port 1(veth1) entered disabled state [ 513.778359][T18074] br0: port 1(veth1) entered blocking state [ 513.780048][T18074] br0: port 1(veth1) entered disabled state [ 513.780445][T18074] veth1: entered allmulticast mode [ 513.782790][T18074] veth1: entered promiscuous mode [ 513.880927][ T37] br0: port 1(veth1) entered blocking state [ 513.881380][ T37] br0: port 1(veth1) entered forwarding state [ 514.299829][T18079] br0: port 2(veth2) entered blocking state [ 514.300310][T18079] br0: port 2(veth2) entered disabled state [ 514.300956][T18079] veth2: entered allmulticast mode [ 514.303530][T18079] veth2: entered promiscuous mode [ 514.410424][ T149] br0: port 2(veth2) entered blocking state [ 514.410914][ T149] br0: port 2(veth2) entered forwarding state [ 672.975775][T21928] br0: port 2(veth2) entered disabled state [ 673.059314][T21929] veth2: left allmulticast mode [ 673.059632][T21929] veth2: left promiscuous mode [ 673.059989][T21929] br0: port 2(veth2) entered disabled state [ 673.141085][T21930] br0: port 1(veth1) entered disabled state [ 673.229556][T21932] veth1: left allmulticast mode [ 673.229801][T21932] veth1: left promiscuous mode [ 673.230150][T21932] br0: port 1(veth1) entered disabled state [ 674.458927][T21953] [ 674.459132][T21953] ============================================ [ 674.459363][T21953] WARNING: possible recursive locking detected [ 674.459563][T21953] 6.13.0-rc5-virtme #1 Not tainted [ 674.459721][T21953] -------------------------------------------- [ 674.459905][T21953] ip/21953 is trying to acquire lock: [ 674.460093][T21953] ffffffff9bbd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 674.460405][T21953] [ 674.460405][T21953] but task is already holding lock: [ 674.460657][T21953] ffffffff9bbd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 674.460966][T21953] [ 674.460966][T21953] other info that might help us debug this: [ 674.461194][T21953] Possible unsafe locking scenario: [ 674.461194][T21953] [ 674.461407][T21953] CPU0 [ 674.461557][T21953] ---- [ 674.461711][T21953] lock((netdev_chain).rwsem); [ 674.461858][T21953] lock((netdev_chain).rwsem); [ 674.462017][T21953] [ 674.462017][T21953] *** DEADLOCK *** [ 674.462017][T21953] [ 674.462242][T21953] May be due to missing lock nesting notation [ 674.462242][T21953] [ 674.462470][T21953] 2 locks held by ip/21953: [ 674.462624][T21953] #0: ffffffff9bbe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 674.462894][T21953] #1: ffffffff9bbd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 674.463189][T21953] [ 674.463189][T21953] stack backtrace: [ 674.463381][T21953] CPU: 2 UID: 0 PID: 21953 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 674.463616][T21953] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 674.463800][T21953] Call Trace: [ 674.463915][T21953] [ 674.463992][T21953] dump_stack_lvl+0x82/0xd0 [ 674.464162][T21953] print_deadlock_bug+0x40a/0x650 [ 674.464313][T21953] validate_chain+0x5bf/0xae0 [ 674.464478][T21953] ? __pfx_validate_chain+0x10/0x10 [ 674.464649][T21953] ? hlock_class+0x4e/0x130 [ 674.464798][T21953] ? mark_lock+0x38/0x3e0 [ 674.464913][T21953] __lock_acquire+0xb9a/0x1680 [ 674.465064][T21953] lock_acquire.part.0+0xeb/0x330 [ 674.465209][T21953] ? blocking_notifier_call_chain+0x50/0x90 [ 674.465396][T21953] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 674.465615][T21953] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 674.465770][T21953] ? trace_lock_acquire+0x14c/0x1f0 [ 674.465919][T21953] ? lock_acquire+0x32/0xc0 [ 674.466065][T21953] ? blocking_notifier_call_chain+0x50/0x90 [ 674.466249][T21953] down_read+0x9f/0x340 [ 674.466363][T21953] ? blocking_notifier_call_chain+0x50/0x90 [ 674.466550][T21953] ? __pfx_down_read+0x10/0x10 [ 674.466700][T21953] ? __lock_release+0x103/0x460 [ 674.466851][T21953] ? netconsole_netdev_event+0x2c1/0x620 [ 674.466999][T21953] ? __pfx___lock_release+0x10/0x10 [ 674.467151][T21953] blocking_notifier_call_chain+0x50/0x90 [ 674.467308][T21953] __netdev_upper_dev_unlink+0xd9/0x220 [ 674.467463][T21953] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 674.467645][T21953] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 674.467803][T21953] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 674.467991][T21953] ? rtnl_is_locked+0x15/0x20 [ 674.468168][T21953] netdev_upper_dev_unlink+0x71/0xa0 [ 674.468317][T21953] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 674.468506][T21953] ? netconsole_netdev_event+0x2c1/0x620 [ 674.468676][T21953] ? mutex_is_locked+0x1c/0x60 [ 674.468822][T21953] ? rtnl_is_locked+0x15/0x20 [ 674.468997][T21953] ? netdev_master_upper_dev_get+0x13/0x120 [ 674.469181][T21953] vrf_device_event+0x78/0xe0 [vrf] [ 674.469331][T21953] notifier_call_chain+0xcd/0x150 [ 674.469477][T21953] blocking_notifier_call_chain+0x66/0x90 [ 674.469654][T21953] unregister_netdevice_many_notify+0xa7b/0x1580 [ 674.469836][T21953] ? hlock_class+0x4e/0x130 [ 674.470002][T21953] ? mark_lock+0x38/0x3e0 [ 674.470153][T21953] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 674.470367][T21953] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 674.470588][T21953] ? kfree+0xf3/0x330 [ 674.470750][T21953] ? vlan_vid_del+0x310/0x5e0 [ 674.470908][T21953] ? vlan_vid_del+0x310/0x5e0 [ 674.471104][T21953] rtnl_dellink+0x348/0xa40 [ 674.471277][T21953] ? __pfx_rtnl_dellink+0x10/0x10 [ 674.471479][T21953] ? find_held_lock+0x2c/0x110 [ 674.471677][T21953] ? __lock_release+0x103/0x460 [ 674.471824][T21953] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 674.472005][T21953] ? __pfx___lock_release+0x10/0x10 [ 674.472178][T21953] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 674.472342][T21953] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 674.472528][T21953] ? __pfx_rtnl_dellink+0x10/0x10 [ 674.472685][T21953] rtnetlink_rcv_msg+0x712/0xc10 [ 674.472869][T21953] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 674.473027][T21953] ? hlock_class+0x4e/0x130 [ 674.473195][T21953] ? mark_lock+0x38/0x3e0 [ 674.473340][T21953] ? __lock_acquire+0xb9a/0x1680 [ 674.473517][T21953] netlink_rcv_skb+0x130/0x360 [ 674.473726][T21953] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 674.473902][T21953] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 674.474114][T21953] ? netlink_deliver_tap+0x13e/0x340 [ 674.474302][T21953] ? netlink_deliver_tap+0xc3/0x340 [ 674.474481][T21953] netlink_unicast+0x44b/0x710 [ 674.474647][T21953] ? __pfx_netlink_unicast+0x10/0x10 [ 674.474795][T21953] ? find_held_lock+0x2c/0x110 [ 674.474972][T21953] netlink_sendmsg+0x723/0xbe0 [ 674.475132][T21953] ? __pfx_netlink_sendmsg+0x10/0x10 [ 674.475321][T21953] ____sys_sendmsg+0x7ac/0xa10 [ 674.475484][T21953] ? __pfx_____sys_sendmsg+0x10/0x10 [ 674.475676][T21953] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 674.475922][T21953] ___sys_sendmsg+0xee/0x170 [ 674.476078][T21953] ? __pfx____sys_sendmsg+0x10/0x10 [ 674.476252][T21953] ? kasan_save_stack+0x34/0x50 [ 674.476431][T21953] ? kasan_save_stack+0x24/0x50 [ 674.476611][T21953] ? __kasan_record_aux_stack+0x8e/0xa0 [ 674.476801][T21953] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 674.477018][T21953] ? __x64_sys_close+0x7c/0xd0 [ 674.477178][T21953] ? do_syscall_64+0xc1/0x1d0 [ 674.477358][T21953] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 674.477588][T21953] ? __lock_acquire+0xb9a/0x1680 [ 674.477760][T21953] ? find_held_lock+0x2c/0x110 [ 674.477953][T21953] ? __lock_release+0x103/0x460 [ 674.478098][T21953] ? __virt_addr_valid+0x22b/0x430 [ 674.478285][T21953] ? __pfx___lock_release+0x10/0x10 [ 674.478439][T21953] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 674.478656][T21953] __sys_sendmsg+0x109/0x1a0 [ 674.478803][T21953] ? __pfx___sys_sendmsg+0x10/0x10 [ 674.478988][T21953] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 674.479225][T21953] do_syscall_64+0xc1/0x1d0 [ 674.479374][T21953] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 674.479596][T21953] RIP: 0033:0x7ff3396cf9a7 [ 674.479788][T21953] 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 [ 674.480347][T21953] RSP: 002b:00007fffef4ff648 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 674.480595][T21953] RAX: ffffffffffffffda RBX: 00007fffef4ffd70 RCX: 00007ff3396cf9a7 [ 674.480863][T21953] RDX: 0000000000000000 RSI: 00007fffef4ff6b0 RDI: 0000000000000005 [ 674.481103][T21953] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 674.481328][T21953] R10: 00007ff33958def8 R11: 0000000000000246 R12: 0000000000000002 [ 674.481589][T21953] R13: 0000000067792880 R14: 0000000000498600 R15: 0000000000000000 [ 674.481816][T21953] [ 674.509390][T21953] ip (21953) used greatest stack depth: 23800 bytes left