[ 13.389076][ T306] 8021q: 802.1Q VLAN Support v1.8 [ 16.695185][ T376] GACT probability NOT on [ 17.991152][ T406] ip (406) used greatest stack depth: 23656 bytes left [ 18.102834][ T412] br10: port 1(veth1.10) entered blocking state [ 18.103257][ T412] br10: port 1(veth1.10) entered disabled state [ 18.103642][ T412] veth1.10: entered allmulticast mode [ 18.103825][ T412] veth1: entered allmulticast mode [ 18.105796][ T412] veth1.10: entered promiscuous mode [ 18.106014][ T412] veth1: entered promiscuous mode [ 18.653995][ T429] br11: port 1(veth1.11) entered blocking state [ 18.654705][ T429] br11: port 1(veth1.11) entered disabled state [ 18.655023][ T429] veth1.11: entered allmulticast mode [ 18.657727][ T429] veth1.11: entered promiscuous mode [ 19.510871][ T459] br10: port 2(veth2.10) entered blocking state [ 19.511165][ T459] br10: port 2(veth2.10) entered disabled state [ 19.511466][ T459] veth2.10: entered allmulticast mode [ 19.511653][ T459] veth2: entered allmulticast mode [ 19.513865][ T459] veth2.10: entered promiscuous mode [ 19.514060][ T459] veth2: entered promiscuous mode [ 19.986977][ T476] br11: port 2(veth2.11) entered blocking state [ 19.987363][ T476] br11: port 2(veth2.11) entered disabled state [ 19.987709][ T476] veth2.11: entered allmulticast mode [ 19.990269][ T476] veth2.11: entered promiscuous mode [ 20.413054][ T488] br10: port 2(veth2.10) entered blocking state [ 20.413536][ T488] br10: port 2(veth2.10) entered forwarding state [ 20.414279][ T488] br10: port 1(veth1.10) entered blocking state [ 20.414581][ T488] br10: port 1(veth1.10) entered forwarding state [ 20.544901][ T493] br11: port 2(veth2.11) entered blocking state [ 20.545424][ T493] br11: port 2(veth2.11) entered forwarding state [ 20.545884][ T493] br11: port 1(veth1.11) entered blocking state [ 20.546127][ T493] br11: port 1(veth1.11) entered forwarding state [ 101.934956][ T837] br11: port 2(veth2.11) entered disabled state [ 101.936534][ T837] br11: port 1(veth1.11) entered disabled state [ 102.053543][ T839] br10: port 2(veth2.10) entered disabled state [ 102.054182][ T839] br10: port 1(veth1.10) entered disabled state [ 102.259148][ T843] veth2.11: left allmulticast mode [ 102.259452][ T843] veth2.11: left promiscuous mode [ 102.259817][ T843] br11: port 2(veth2.11) entered disabled state [ 102.506686][ T847] veth2: left allmulticast mode [ 102.506974][ T847] veth2: left promiscuous mode [ 102.642314][ T851] veth2.10: left allmulticast mode [ 102.642597][ T851] veth2.10: left promiscuous mode [ 102.642989][ T851] br10: port 2(veth2.10) entered disabled state [ 103.174582][ T862] veth1.11: left allmulticast mode [ 103.174857][ T862] veth1.11: left promiscuous mode [ 103.175209][ T862] br11: port 1(veth1.11) entered disabled state [ 103.412801][ T866] veth1: left allmulticast mode [ 103.413051][ T866] veth1: left promiscuous mode [ 103.518644][ T868] veth1.10: left allmulticast mode [ 103.519002][ T868] veth1.10: left promiscuous mode [ 103.519520][ T868] br10: port 1(veth1.10) entered disabled state [ 104.478238][ T882] [ 104.478400][ T882] ============================================ [ 104.478607][ T882] WARNING: possible recursive locking detected [ 104.478813][ T882] 6.13.0-rc5-virtme #1 Not tainted [ 104.478995][ T882] -------------------------------------------- [ 104.479201][ T882] ip/882 is trying to acquire lock: [ 104.479365][ T882] ffffffff92bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 104.479733][ T882] [ 104.479733][ T882] but task is already holding lock: [ 104.479976][ T882] ffffffff92bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 104.480316][ T882] [ 104.480316][ T882] other info that might help us debug this: [ 104.480573][ T882] Possible unsafe locking scenario: [ 104.480573][ T882] [ 104.480817][ T882] CPU0 [ 104.480937][ T882] ---- [ 104.481062][ T882] lock((netdev_chain).rwsem); [ 104.481225][ T882] lock((netdev_chain).rwsem); [ 104.481387][ T882] [ 104.481387][ T882] *** DEADLOCK *** [ 104.481387][ T882] [ 104.481632][ T882] May be due to missing lock nesting notation [ 104.481632][ T882] [ 104.481875][ T882] 2 locks held by ip/882: [ 104.482004][ T882] #0: ffffffff92be7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 104.482302][ T882] #1: ffffffff92bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 104.482637][ T882] [ 104.482637][ T882] stack backtrace: [ 104.482854][ T882] CPU: 3 UID: 0 PID: 882 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 104.483111][ T882] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 104.483333][ T882] Call Trace: [ 104.483469][ T882] [ 104.483562][ T882] dump_stack_lvl+0x82/0xd0 [ 104.483763][ T882] print_deadlock_bug+0x40a/0x650 [ 104.483938][ T882] validate_chain+0x5bf/0xae0 [ 104.484108][ T882] ? __pfx_validate_chain+0x10/0x10 [ 104.484274][ T882] ? hlock_class+0x4e/0x130 [ 104.484437][ T882] ? mark_lock+0x38/0x3e0 [ 104.484563][ T882] __lock_acquire+0xb9a/0x1680 [ 104.484743][ T882] lock_acquire.part.0+0xeb/0x330 [ 104.484915][ T882] ? blocking_notifier_call_chain+0x50/0x90 [ 104.485244][ T882] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 104.485464][ T882] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 104.485633][ T882] ? trace_lock_acquire+0x14c/0x1f0 [ 104.485795][ T882] ? lock_acquire+0x32/0xc0 [ 104.485958][ T882] ? blocking_notifier_call_chain+0x50/0x90 [ 104.486161][ T882] down_read+0x9f/0x340 [ 104.486290][ T882] ? blocking_notifier_call_chain+0x50/0x90 [ 104.486501][ T882] ? __pfx_down_read+0x10/0x10 [ 104.486664][ T882] ? __lock_release+0x103/0x460 [ 104.486829][ T882] ? netconsole_netdev_event+0x2c1/0x620 [ 104.486993][ T882] ? __pfx___lock_release+0x10/0x10 [ 104.487159][ T882] blocking_notifier_call_chain+0x50/0x90 [ 104.487322][ T882] __netdev_upper_dev_unlink+0xd9/0x220 [ 104.487489][ T882] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 104.487698][ T882] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 104.487861][ T882] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 104.488064][ T882] ? rtnl_is_locked+0x15/0x20 [ 104.488232][ T882] netdev_upper_dev_unlink+0x71/0xa0 [ 104.488393][ T882] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 104.488593][ T882] ? netconsole_netdev_event+0x2c1/0x620 [ 104.488764][ T882] ? mutex_is_locked+0x1c/0x60 [ 104.488930][ T882] ? rtnl_is_locked+0x15/0x20 [ 104.489095][ T882] ? netdev_master_upper_dev_get+0x13/0x120 [ 104.489300][ T882] vrf_device_event+0x78/0xe0 [vrf] [ 104.489468][ T882] notifier_call_chain+0xcd/0x150 [ 104.489650][ T882] blocking_notifier_call_chain+0x66/0x90 [ 104.489816][ T882] unregister_netdevice_many_notify+0xa7b/0x1580 [ 104.490036][ T882] ? hlock_class+0x4e/0x130 [ 104.490202][ T882] ? mark_lock+0x38/0x3e0 [ 104.490327][ T882] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 104.490534][ T882] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 104.490753][ T882] ? kfree+0xf3/0x330 [ 104.490884][ T882] ? vlan_vid_del+0x310/0x5e0 [ 104.491065][ T882] ? vlan_vid_del+0x310/0x5e0 [ 104.491242][ T882] rtnl_dellink+0x348/0xa40 [ 104.491415][ T882] ? __pfx_rtnl_dellink+0x10/0x10 [ 104.491594][ T882] ? find_held_lock+0x2c/0x110 [ 104.491759][ T882] ? __lock_release+0x103/0x460 [ 104.491932][ T882] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 104.492095][ T882] ? __pfx___lock_release+0x10/0x10 [ 104.492262][ T882] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 104.492429][ T882] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 104.492601][ T882] ? __pfx_rtnl_dellink+0x10/0x10 [ 104.492764][ T882] rtnetlink_rcv_msg+0x712/0xc10 [ 104.492929][ T882] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 104.493093][ T882] ? hlock_class+0x4e/0x130 [ 104.493255][ T882] ? mark_lock+0x38/0x3e0 [ 104.493380][ T882] ? __lock_acquire+0xb9a/0x1680 [ 104.493557][ T882] netlink_rcv_skb+0x130/0x360 [ 104.493727][ T882] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 104.493890][ T882] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 104.494058][ T882] ? netlink_deliver_tap+0x13e/0x340 [ 104.494223][ T882] ? netlink_deliver_tap+0xc3/0x340 [ 104.494388][ T882] netlink_unicast+0x44b/0x710 [ 104.494552][ T882] ? __pfx_netlink_unicast+0x10/0x10 [ 104.494723][ T882] ? find_held_lock+0x2c/0x110 [ 104.494897][ T882] netlink_sendmsg+0x723/0xbe0 [ 104.495062][ T882] ? __pfx_netlink_sendmsg+0x10/0x10 [ 104.495228][ T882] ____sys_sendmsg+0x7ac/0xa10 [ 104.495394][ T882] ? __pfx_____sys_sendmsg+0x10/0x10 [ 104.495561][ T882] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 104.495780][ T882] ___sys_sendmsg+0xee/0x170 [ 104.495944][ T882] ? __pfx____sys_sendmsg+0x10/0x10 [ 104.496112][ T882] ? kasan_save_stack+0x34/0x50 [ 104.496277][ T882] ? kasan_save_stack+0x24/0x50 [ 104.496443][ T882] ? __kasan_record_aux_stack+0x8e/0xa0 [ 104.496609][ T882] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 104.496820][ T882] ? __x64_sys_close+0x7c/0xd0 [ 104.496989][ T882] ? do_syscall_64+0xc1/0x1d0 [ 104.497154][ T882] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 104.497370][ T882] ? __lock_acquire+0xb9a/0x1680 [ 104.497538][ T882] ? find_held_lock+0x2c/0x110 [ 104.497712][ T882] ? __lock_release+0x103/0x460 [ 104.497873][ T882] ? __virt_addr_valid+0x22b/0x430 [ 104.498051][ T882] ? __pfx___lock_release+0x10/0x10 [ 104.498217][ T882] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 104.498385][ T882] __sys_sendmsg+0x109/0x1a0 [ 104.498555][ T882] ? __pfx___sys_sendmsg+0x10/0x10 [ 104.498721][ T882] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 104.498940][ T882] do_syscall_64+0xc1/0x1d0 [ 104.499106][ T882] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 104.499310][ T882] RIP: 0033:0x7f8e56aba9a7 [ 104.499489][ T882] 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 [ 104.500111][ T882] RSP: 002b:00007ffd78526f48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 104.500373][ T882] RAX: ffffffffffffffda RBX: 00007ffd78527670 RCX: 00007f8e56aba9a7 [ 104.500629][ T882] RDX: 0000000000000000 RSI: 00007ffd78526fb0 RDI: 0000000000000005 [ 104.500876][ T882] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 104.501138][ T882] R10: 00007f8e56978ef8 R11: 0000000000000246 R12: 0000000000000002 [ 104.501393][ T882] R13: 00000000677952e1 R14: 0000000000498600 R15: 0000000000000000 [ 104.501648][ T882]