[ 345.463773][ T4394] 8021q: 802.1Q VLAN Support v1.8 [ 349.423873][ T4496] br10: port 1(veth1.10) entered blocking state [ 349.424230][ T4496] br10: port 1(veth1.10) entered disabled state [ 349.424560][ T4496] veth1.10: entered allmulticast mode [ 349.425182][ T4496] veth1: entered allmulticast mode [ 349.427573][ T4496] veth1.10: entered promiscuous mode [ 349.427812][ T4496] veth1: entered promiscuous mode [ 349.910309][ T4513] br11: port 1(veth1.11) entered blocking state [ 349.910677][ T4513] br11: port 1(veth1.11) entered disabled state [ 349.910994][ T4513] veth1.11: entered allmulticast mode [ 349.913313][ T4513] veth1.11: entered promiscuous mode [ 350.867635][ T4543] br10: port 2(veth2.10) entered blocking state [ 350.868004][ T4543] br10: port 2(veth2.10) entered disabled state [ 350.868809][ T4543] veth2.10: entered allmulticast mode [ 350.869009][ T4543] veth2: entered allmulticast mode [ 350.870986][ T4543] veth2.10: entered promiscuous mode [ 350.871215][ T4543] veth2: entered promiscuous mode [ 351.426887][ T4560] br11: port 2(veth2.11) entered blocking state [ 351.427264][ T4560] br11: port 2(veth2.11) entered disabled state [ 351.427654][ T4560] veth2.11: entered allmulticast mode [ 351.429759][ T4560] veth2.11: entered promiscuous mode [ 351.862992][ T4572] br10: port 2(veth2.10) entered blocking state [ 351.863346][ T4572] br10: port 2(veth2.10) entered forwarding state [ 351.864219][ T4572] br10: port 1(veth1.10) entered blocking state [ 351.864520][ T4572] br10: port 1(veth1.10) entered forwarding state [ 352.008938][ T4577] br11: port 2(veth2.11) entered blocking state [ 352.009301][ T4577] br11: port 2(veth2.11) entered forwarding state [ 352.009783][ T4577] br11: port 1(veth1.11) entered blocking state [ 352.010051][ T4577] br11: port 1(veth1.11) entered forwarding state [ 433.032266][ T4920] br11: port 2(veth2.11) entered disabled state [ 433.033606][ T4920] br11: port 1(veth1.11) entered disabled state [ 433.131304][ T4922] br10: port 2(veth2.10) entered disabled state [ 433.132242][ T4922] br10: port 1(veth1.10) entered disabled state [ 433.338091][ T4926] veth2.11: left allmulticast mode [ 433.338632][ T4926] veth2.11: left promiscuous mode [ 433.338999][ T4926] br11: port 2(veth2.11) entered disabled state [ 433.552470][ T4930] veth2: left allmulticast mode [ 433.552714][ T4930] veth2: left promiscuous mode [ 433.643982][ T4934] veth2.10: left allmulticast mode [ 433.644373][ T4934] veth2.10: left promiscuous mode [ 433.644858][ T4934] br10: port 2(veth2.10) entered disabled state [ 434.230621][ T4944] veth1.11: left allmulticast mode [ 434.231081][ T4944] veth1.11: left promiscuous mode [ 434.231641][ T4944] br11: port 1(veth1.11) entered disabled state [ 434.505045][ T4948] veth1: left allmulticast mode [ 434.505370][ T4948] veth1: left promiscuous mode [ 434.597333][ T4950] veth1.10: left allmulticast mode [ 434.597625][ T4950] veth1.10: left promiscuous mode [ 434.597986][ T4950] br10: port 1(veth1.10) entered disabled state [ 435.528142][ T4964] [ 435.528373][ T4964] ============================================ [ 435.528577][ T4964] WARNING: possible recursive locking detected [ 435.528774][ T4964] 6.13.0-rc5-virtme #1 Not tainted [ 435.528944][ T4964] -------------------------------------------- [ 435.529161][ T4964] ip/4964 is trying to acquire lock: [ 435.529336][ T4964] ffffffffafdd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 435.529652][ T4964] [ 435.529652][ T4964] but task is already holding lock: [ 435.529879][ T4964] ffffffffafdd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 435.530178][ T4964] [ 435.530178][ T4964] other info that might help us debug this: [ 435.530399][ T4964] Possible unsafe locking scenario: [ 435.530399][ T4964] [ 435.530624][ T4964] CPU0 [ 435.530736][ T4964] ---- [ 435.530845][ T4964] lock((netdev_chain).rwsem); [ 435.530991][ T4964] lock((netdev_chain).rwsem); [ 435.531140][ T4964] [ 435.531140][ T4964] *** DEADLOCK *** [ 435.531140][ T4964] [ 435.531355][ T4964] May be due to missing lock nesting notation [ 435.531355][ T4964] [ 435.531596][ T4964] 2 locks held by ip/4964: [ 435.531745][ T4964] #0: ffffffffafde7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 435.532029][ T4964] #1: ffffffffafdd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 435.532337][ T4964] [ 435.532337][ T4964] stack backtrace: [ 435.532532][ T4964] CPU: 3 UID: 0 PID: 4964 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 435.532760][ T4964] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 435.532957][ T4964] Call Trace: [ 435.533073][ T4964] [ 435.533150][ T4964] dump_stack_lvl+0x82/0xd0 [ 435.533304][ T4964] print_deadlock_bug+0x40a/0x650 [ 435.533455][ T4964] validate_chain+0x5bf/0xae0 [ 435.533607][ T4964] ? __pfx_validate_chain+0x10/0x10 [ 435.533764][ T4964] ? hlock_class+0x4e/0x130 [ 435.533913][ T4964] ? mark_lock+0x38/0x3e0 [ 435.534027][ T4964] __lock_acquire+0xb9a/0x1680 [ 435.534180][ T4964] lock_acquire.part.0+0xeb/0x330 [ 435.534330][ T4964] ? blocking_notifier_call_chain+0x50/0x90 [ 435.534519][ T4964] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 435.534713][ T4964] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 435.534868][ T4964] ? trace_lock_acquire+0x14c/0x1f0 [ 435.535016][ T4964] ? lock_acquire+0x32/0xc0 [ 435.535164][ T4964] ? blocking_notifier_call_chain+0x50/0x90 [ 435.535348][ T4964] down_read+0x9f/0x340 [ 435.535462][ T4964] ? blocking_notifier_call_chain+0x50/0x90 [ 435.535643][ T4964] ? __pfx_down_read+0x10/0x10 [ 435.535795][ T4964] ? __lock_release+0x103/0x460 [ 435.535953][ T4964] ? netconsole_netdev_event+0x2c1/0x620 [ 435.536099][ T4964] ? __pfx___lock_release+0x10/0x10 [ 435.536252][ T4964] blocking_notifier_call_chain+0x50/0x90 [ 435.536403][ T4964] __netdev_upper_dev_unlink+0xd9/0x220 [ 435.536556][ T4964] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 435.536739][ T4964] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 435.536897][ T4964] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 435.537080][ T4964] ? rtnl_is_locked+0x15/0x20 [ 435.537231][ T4964] netdev_upper_dev_unlink+0x71/0xa0 [ 435.537379][ T4964] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 435.537572][ T4964] ? netconsole_netdev_event+0x2c1/0x620 [ 435.537727][ T4964] ? mutex_is_locked+0x1c/0x60 [ 435.537875][ T4964] ? rtnl_is_locked+0x15/0x20 [ 435.538040][ T4964] ? netdev_master_upper_dev_get+0x13/0x120 [ 435.538224][ T4964] vrf_device_event+0x78/0xe0 [vrf] [ 435.538376][ T4964] notifier_call_chain+0xcd/0x150 [ 435.538530][ T4964] blocking_notifier_call_chain+0x66/0x90 [ 435.538679][ T4964] unregister_netdevice_many_notify+0xa7b/0x1580 [ 435.538865][ T4964] ? hlock_class+0x4e/0x130 [ 435.539018][ T4964] ? mark_lock+0x38/0x3e0 [ 435.539138][ T4964] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 435.539324][ T4964] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 435.539512][ T4964] ? kfree+0xf3/0x330 [ 435.539629][ T4964] ? vlan_vid_del+0x310/0x5e0 [ 435.539785][ T4964] ? vlan_vid_del+0x310/0x5e0 [ 435.539939][ T4964] rtnl_dellink+0x348/0xa40 [ 435.540092][ T4964] ? __pfx_rtnl_dellink+0x10/0x10 [ 435.540262][ T4964] ? find_held_lock+0x2c/0x110 [ 435.540418][ T4964] ? __lock_release+0x103/0x460 [ 435.540569][ T4964] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 435.540722][ T4964] ? __pfx___lock_release+0x10/0x10 [ 435.540872][ T4964] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 435.541024][ T4964] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 435.541171][ T4964] ? __pfx_rtnl_dellink+0x10/0x10 [ 435.541326][ T4964] rtnetlink_rcv_msg+0x712/0xc10 [ 435.541498][ T4964] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 435.541652][ T4964] ? hlock_class+0x4e/0x130 [ 435.541800][ T4964] ? mark_lock+0x38/0x3e0 [ 435.541917][ T4964] ? __lock_acquire+0xb9a/0x1680 [ 435.542067][ T4964] netlink_rcv_skb+0x130/0x360 [ 435.542221][ T4964] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 435.542374][ T4964] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 435.542531][ T4964] ? netlink_deliver_tap+0x13e/0x340 [ 435.542721][ T4964] ? netlink_deliver_tap+0xc3/0x340 [ 435.542947][ T4964] netlink_unicast+0x44b/0x710 [ 435.543181][ T4964] ? __pfx_netlink_unicast+0x10/0x10 [ 435.543413][ T4964] ? find_held_lock+0x2c/0x110 [ 435.543649][ T4964] netlink_sendmsg+0x723/0xbe0 [ 435.543875][ T4964] ? __pfx_netlink_sendmsg+0x10/0x10 [ 435.544106][ T4964] ____sys_sendmsg+0x7ac/0xa10 [ 435.544275][ T4964] ? __pfx_____sys_sendmsg+0x10/0x10 [ 435.544474][ T4964] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 435.544733][ T4964] ___sys_sendmsg+0xee/0x170 [ 435.544965][ T4964] ? __pfx____sys_sendmsg+0x10/0x10 [ 435.545196][ T4964] ? kasan_save_stack+0x34/0x50 [ 435.545424][ T4964] ? kasan_save_stack+0x24/0x50 [ 435.545660][ T4964] ? __kasan_record_aux_stack+0x8e/0xa0 [ 435.545888][ T4964] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 435.546169][ T4964] ? __x64_sys_close+0x7c/0xd0 [ 435.546401][ T4964] ? do_syscall_64+0xc1/0x1d0 [ 435.546626][ T4964] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.546914][ T4964] ? __lock_acquire+0xb9a/0x1680 [ 435.547153][ T4964] ? find_held_lock+0x2c/0x110 [ 435.547386][ T4964] ? __lock_release+0x103/0x460 [ 435.547636][ T4964] ? __virt_addr_valid+0x22b/0x430 [ 435.547876][ T4964] ? __pfx___lock_release+0x10/0x10 [ 435.548093][ T4964] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 435.548315][ T4964] __sys_sendmsg+0x109/0x1a0 [ 435.548555][ T4964] ? __pfx___sys_sendmsg+0x10/0x10 [ 435.548776][ T4964] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 435.549090][ T4964] do_syscall_64+0xc1/0x1d0 [ 435.549340][ T4964] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 435.549636][ T4964] RIP: 0033:0x7f2c5a1bc9a7 [ 435.549888][ T4964] 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 [ 435.550704][ T4964] RSP: 002b:00007fffc4f55468 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 435.551045][ T4964] RAX: ffffffffffffffda RBX: 00007fffc4f55b90 RCX: 00007f2c5a1bc9a7 [ 435.551406][ T4964] RDX: 0000000000000000 RSI: 00007fffc4f554d0 RDI: 0000000000000005 [ 435.551823][ T4964] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 435.552187][ T4964] R10: 00007f2c5a07aef8 R11: 0000000000000246 R12: 0000000000000002 [ 435.552544][ T4964] R13: 0000000067792a23 R14: 0000000000498600 R15: 0000000000000000 [ 435.552887][ T4964]