[ 13.467062][ T306] 8021q: 802.1Q VLAN Support v1.8 [ 16.582109][ T376] GACT probability NOT on [ 17.836869][ T406] ip (406) used greatest stack depth: 23720 bytes left [ 17.954900][ T412] br10: port 1(veth1.10) entered blocking state [ 17.955345][ T412] br10: port 1(veth1.10) entered disabled state [ 17.955731][ T412] veth1.10: entered allmulticast mode [ 17.955928][ T412] veth1: entered allmulticast mode [ 17.958162][ T412] veth1.10: entered promiscuous mode [ 17.958390][ T412] veth1: entered promiscuous mode [ 18.461130][ T429] br11: port 1(veth1.11) entered blocking state [ 18.461923][ T429] br11: port 1(veth1.11) entered disabled state [ 18.462212][ T429] veth1.11: entered allmulticast mode [ 18.464104][ T429] veth1.11: entered promiscuous mode [ 19.280166][ T459] br10: port 2(veth2.10) entered blocking state [ 19.280461][ T459] br10: port 2(veth2.10) entered disabled state [ 19.280749][ T459] veth2.10: entered allmulticast mode [ 19.280924][ T459] veth2: entered allmulticast mode [ 19.283047][ T459] veth2.10: entered promiscuous mode [ 19.283297][ T459] veth2: entered promiscuous mode [ 19.788022][ T476] br11: port 2(veth2.11) entered blocking state [ 19.788363][ T476] br11: port 2(veth2.11) entered disabled state [ 19.795987][ T476] veth2.11: entered allmulticast mode [ 19.798662][ T476] veth2.11: entered promiscuous mode [ 20.237504][ T488] br10: port 2(veth2.10) entered blocking state [ 20.237915][ T488] br10: port 2(veth2.10) entered forwarding state [ 20.238650][ T488] br10: port 1(veth1.10) entered blocking state [ 20.238914][ T488] br10: port 1(veth1.10) entered forwarding state [ 20.365161][ T493] br11: port 2(veth2.11) entered blocking state [ 20.365470][ T493] br11: port 2(veth2.11) entered forwarding state [ 20.366164][ T493] br11: port 1(veth1.11) entered blocking state [ 20.366445][ T493] br11: port 1(veth1.11) entered forwarding state [ 101.345343][ T836] br11: port 2(veth2.11) entered disabled state [ 101.346984][ T836] br11: port 1(veth1.11) entered disabled state [ 101.443945][ T838] br10: port 2(veth2.10) entered disabled state [ 101.444567][ T838] br10: port 1(veth1.10) entered disabled state [ 101.637330][ T842] veth2.11: left allmulticast mode [ 101.638084][ T842] veth2.11: left promiscuous mode [ 101.638534][ T842] br11: port 2(veth2.11) entered disabled state [ 101.906462][ T846] veth2: left allmulticast mode [ 101.906730][ T846] veth2: left promiscuous mode [ 102.001825][ T850] veth2.10: left allmulticast mode [ 102.002076][ T850] veth2.10: left promiscuous mode [ 102.002495][ T850] br10: port 2(veth2.10) entered disabled state [ 102.540330][ T860] veth1.11: left allmulticast mode [ 102.540594][ T860] veth1.11: left promiscuous mode [ 102.540927][ T860] br11: port 1(veth1.11) entered disabled state [ 102.778897][ T864] veth1: left allmulticast mode [ 102.779141][ T864] veth1: left promiscuous mode [ 102.880521][ T866] veth1.10: left allmulticast mode [ 102.880798][ T866] veth1.10: left promiscuous mode [ 102.881130][ T866] br10: port 1(veth1.10) entered disabled state [ 103.810256][ T881] [ 103.810452][ T881] ============================================ [ 103.810752][ T881] WARNING: possible recursive locking detected [ 103.811068][ T881] 6.13.0-rc5-virtme #1 Not tainted [ 103.811311][ T881] -------------------------------------------- [ 103.811611][ T881] ip/881 is trying to acquire lock: [ 103.811860][ T881] ffffffff93fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 103.812335][ T881] [ 103.812335][ T881] but task is already holding lock: [ 103.812680][ T881] ffffffff93fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 103.813158][ T881] [ 103.813158][ T881] other info that might help us debug this: [ 103.813505][ T881] Possible unsafe locking scenario: [ 103.813505][ T881] [ 103.813843][ T881] CPU0 [ 103.814013][ T881] ---- [ 103.814189][ T881] lock((netdev_chain).rwsem); [ 103.814431][ T881] lock((netdev_chain).rwsem); [ 103.814681][ T881] [ 103.814681][ T881] *** DEADLOCK *** [ 103.814681][ T881] [ 103.815075][ T881] May be due to missing lock nesting notation [ 103.815075][ T881] [ 103.815471][ T881] 2 locks held by ip/881: [ 103.815679][ T881] #0: ffffffff93fe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 103.816160][ T881] #1: ffffffff93fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 103.816703][ T881] [ 103.816703][ T881] stack backtrace: [ 103.817022][ T881] CPU: 0 UID: 0 PID: 881 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 103.817402][ T881] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 103.817718][ T881] Call Trace: [ 103.817922][ T881] [ 103.818060][ T881] dump_stack_lvl+0x82/0xd0 [ 103.818338][ T881] print_deadlock_bug+0x40a/0x650 [ 103.818616][ T881] validate_chain+0x5bf/0xae0 [ 103.818888][ T881] ? __pfx_validate_chain+0x10/0x10 [ 103.819162][ T881] ? hlock_class+0x4e/0x130 [ 103.819421][ T881] ? mark_lock+0x38/0x3e0 [ 103.819623][ T881] __lock_acquire+0xb9a/0x1680 [ 103.819808][ T881] lock_acquire.part.0+0xeb/0x330 [ 103.819986][ T881] ? blocking_notifier_call_chain+0x50/0x90 [ 103.820229][ T881] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 103.820563][ T881] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 103.820742][ T881] ? trace_lock_acquire+0x14c/0x1f0 [ 103.820919][ T881] ? lock_acquire+0x32/0xc0 [ 103.821098][ T881] ? blocking_notifier_call_chain+0x50/0x90 [ 103.821320][ T881] down_read+0x9f/0x340 [ 103.821454][ T881] ? blocking_notifier_call_chain+0x50/0x90 [ 103.821683][ T881] ? __pfx_down_read+0x10/0x10 [ 103.821860][ T881] ? __lock_release+0x103/0x460 [ 103.822039][ T881] ? netconsole_netdev_event+0x2c1/0x620 [ 103.822219][ T881] ? __pfx___lock_release+0x10/0x10 [ 103.822396][ T881] blocking_notifier_call_chain+0x50/0x90 [ 103.822640][ T881] __netdev_upper_dev_unlink+0xd9/0x220 [ 103.822878][ T881] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 103.823106][ T881] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 103.823285][ T881] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 103.823513][ T881] ? rtnl_is_locked+0x15/0x20 [ 103.823694][ T881] netdev_upper_dev_unlink+0x71/0xa0 [ 103.823872][ T881] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 103.824093][ T881] ? netconsole_netdev_event+0x2c1/0x620 [ 103.824268][ T881] ? mutex_is_locked+0x1c/0x60 [ 103.824460][ T881] ? rtnl_is_locked+0x15/0x20 [ 103.824637][ T881] ? netdev_master_upper_dev_get+0x13/0x120 [ 103.824855][ T881] vrf_device_event+0x78/0xe0 [vrf] [ 103.825037][ T881] notifier_call_chain+0xcd/0x150 [ 103.825214][ T881] blocking_notifier_call_chain+0x66/0x90 [ 103.825392][ T881] unregister_netdevice_many_notify+0xa7b/0x1580 [ 103.825631][ T881] ? hlock_class+0x4e/0x130 [ 103.825816][ T881] ? mark_lock+0x38/0x3e0 [ 103.825949][ T881] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 103.826166][ T881] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 103.826384][ T881] ? kfree+0xf3/0x330 [ 103.826535][ T881] ? vlan_vid_del+0x310/0x5e0 [ 103.826714][ T881] ? vlan_vid_del+0x310/0x5e0 [ 103.826892][ T881] rtnl_dellink+0x348/0xa40 [ 103.827079][ T881] ? __pfx_rtnl_dellink+0x10/0x10 [ 103.827269][ T881] ? find_held_lock+0x2c/0x110 [ 103.827458][ T881] ? __lock_release+0x103/0x460 [ 103.827637][ T881] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 103.827814][ T881] ? __pfx___lock_release+0x10/0x10 [ 103.827990][ T881] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 103.828168][ T881] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 103.828346][ T881] ? __pfx_rtnl_dellink+0x10/0x10 [ 103.828538][ T881] rtnetlink_rcv_msg+0x712/0xc10 [ 103.828714][ T881] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 103.828890][ T881] ? hlock_class+0x4e/0x130 [ 103.829066][ T881] ? mark_lock+0x38/0x3e0 [ 103.829201][ T881] ? __lock_acquire+0xb9a/0x1680 [ 103.829378][ T881] netlink_rcv_skb+0x130/0x360 [ 103.829569][ T881] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 103.829753][ T881] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 103.829934][ T881] ? netlink_deliver_tap+0x13e/0x340 [ 103.830112][ T881] ? netlink_deliver_tap+0xc3/0x340 [ 103.830304][ T881] netlink_unicast+0x44b/0x710 [ 103.830506][ T881] ? __pfx_netlink_unicast+0x10/0x10 [ 103.830768][ T881] ? find_held_lock+0x2c/0x110 [ 103.831039][ T881] netlink_sendmsg+0x723/0xbe0 [ 103.831230][ T881] ? __pfx_netlink_sendmsg+0x10/0x10 [ 103.831410][ T881] ____sys_sendmsg+0x7ac/0xa10 [ 103.831596][ T881] ? __pfx_____sys_sendmsg+0x10/0x10 [ 103.831772][ T881] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 103.831998][ T881] ___sys_sendmsg+0xee/0x170 [ 103.832171][ T881] ? __pfx____sys_sendmsg+0x10/0x10 [ 103.832347][ T881] ? kasan_save_stack+0x34/0x50 [ 103.832545][ T881] ? kasan_save_stack+0x24/0x50 [ 103.832723][ T881] ? __kasan_record_aux_stack+0x8e/0xa0 [ 103.832901][ T881] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 103.833126][ T881] ? __x64_sys_close+0x7c/0xd0 [ 103.833302][ T881] ? do_syscall_64+0xc1/0x1d0 [ 103.833497][ T881] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 103.833719][ T881] ? __lock_acquire+0xb9a/0x1680 [ 103.833905][ T881] ? find_held_lock+0x2c/0x110 [ 103.834085][ T881] ? __lock_release+0x103/0x460 [ 103.834261][ T881] ? __virt_addr_valid+0x22b/0x430 [ 103.834449][ T881] ? __pfx___lock_release+0x10/0x10 [ 103.834632][ T881] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 103.834810][ T881] __sys_sendmsg+0x109/0x1a0 [ 103.834987][ T881] ? __pfx___sys_sendmsg+0x10/0x10 [ 103.835170][ T881] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 103.835399][ T881] do_syscall_64+0xc1/0x1d0 [ 103.835591][ T881] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 103.835811][ T881] RIP: 0033:0x7f7cc76449a7 [ 103.835995][ T881] 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 [ 103.836630][ T881] RSP: 002b:00007ffc52889498 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 103.836901][ T881] RAX: ffffffffffffffda RBX: 00007ffc52889bc0 RCX: 00007f7cc76449a7 [ 103.837168][ T881] RDX: 0000000000000000 RSI: 00007ffc52889500 RDI: 0000000000000005 [ 103.837437][ T881] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 103.837728][ T881] R10: 00007f7cc7502ef8 R11: 0000000000000246 R12: 0000000000000002 [ 103.837993][ T881] R13: 0000000067792a4e R14: 0000000000498600 R15: 0000000000000000 [ 103.838260][ T881]