[ 51.129018][ T587] 8021q: 802.1Q VLAN Support v1.8 [ 54.126329][ T631] br1: port 1(veth1.100) entered blocking state [ 54.127291][ T631] br1: port 1(veth1.100) entered disabled state [ 54.127627][ T631] veth1.100: entered allmulticast mode [ 54.127863][ T631] veth1: entered allmulticast mode [ 54.129944][ T631] veth1.100: entered promiscuous mode [ 54.130198][ T631] veth1: entered promiscuous mode [ 54.354420][ T634] br1: port 1(veth1.100) entered blocking state [ 54.355116][ T634] br1: port 1(veth1.100) entered forwarding state [ 54.898827][ T644] br2: port 1(veth1.200) entered blocking state [ 54.899122][ T644] br2: port 1(veth1.200) entered disabled state [ 54.899443][ T644] veth1.200: entered allmulticast mode [ 54.908441][ T644] veth1.200: entered promiscuous mode [ 55.148222][ T647] br2: port 1(veth1.200) entered blocking state [ 55.148528][ T647] br2: port 1(veth1.200) entered forwarding state [ 66.536261][ T708] veth1.100: left allmulticast mode [ 66.536537][ T708] veth1.100: left promiscuous mode [ 66.537071][ T708] br1: port 1(veth1.100) entered disabled state [ 66.638857][ T709] veth1.200: left allmulticast mode [ 66.639283][ T709] veth1: left allmulticast mode [ 66.639665][ T709] veth1.200: left promiscuous mode [ 66.639921][ T709] veth1: left promiscuous mode [ 66.640512][ T709] br2: port 1(veth1.200) entered disabled state [ 68.787702][ T711] br2: port 1(veth1.200) entered blocking state [ 68.788061][ T711] br2: port 1(veth1.200) entered disabled state [ 68.788936][ T711] veth1.200: entered allmulticast mode [ 68.789199][ T711] veth1: entered allmulticast mode [ 68.791285][ T711] veth1.200: entered promiscuous mode [ 68.791554][ T711] veth1: entered promiscuous mode [ 68.792752][ T711] br2: port 1(veth1.200) entered blocking state [ 68.793199][ T711] br2: port 1(veth1.200) entered forwarding state [ 68.866787][ T712] br1: port 1(veth1.100) entered blocking state [ 68.867082][ T712] br1: port 1(veth1.100) entered disabled state [ 68.877787][ T712] veth1.100: entered allmulticast mode [ 68.879812][ T712] veth1.100: entered promiscuous mode [ 68.880853][ T712] br1: port 1(veth1.100) entered blocking state [ 68.881145][ T712] br1: port 1(veth1.100) entered forwarding state [ 74.778148][ T764] veth1.200: left allmulticast mode [ 74.778592][ T764] veth1.200: left promiscuous mode [ 74.779397][ T764] br2: port 1(veth1.200) entered disabled state [ 75.262056][ T771] veth1.100: left allmulticast mode [ 75.262382][ T771] veth1: left allmulticast mode [ 75.262582][ T771] veth1.100: left promiscuous mode [ 75.262781][ T771] veth1: left promiscuous mode [ 75.263334][ T771] br1: port 1(veth1.100) entered disabled state [ 77.241929][ T792] [ 77.242161][ T792] ============================================ [ 77.242351][ T792] WARNING: possible recursive locking detected [ 77.242537][ T792] 6.13.0-rc5-virtme #1 Not tainted [ 77.242694][ T792] -------------------------------------------- [ 77.242872][ T792] ip/792 is trying to acquire lock: [ 77.243026][ T792] ffffffffbbfd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 77.243337][ T792] [ 77.243337][ T792] but task is already holding lock: [ 77.243551][ T792] ffffffffbbfd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 77.243854][ T792] [ 77.243854][ T792] other info that might help us debug this: [ 77.244079][ T792] Possible unsafe locking scenario: [ 77.244079][ T792] [ 77.244297][ T792] CPU0 [ 77.244412][ T792] ---- [ 77.244522][ T792] lock((netdev_chain).rwsem); [ 77.244671][ T792] lock((netdev_chain).rwsem); [ 77.244817][ T792] [ 77.244817][ T792] *** DEADLOCK *** [ 77.244817][ T792] [ 77.245035][ T792] May be due to missing lock nesting notation [ 77.245035][ T792] [ 77.245253][ T792] 2 locks held by ip/792: [ 77.245366][ T792] #0: ffffffffbbfe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 77.245636][ T792] #1: ffffffffbbfd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 77.245938][ T792] [ 77.245938][ T792] stack backtrace: [ 77.246118][ T792] CPU: 2 UID: 0 PID: 792 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 77.246351][ T792] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 77.246535][ T792] Call Trace: [ 77.246646][ T792] [ 77.246723][ T792] dump_stack_lvl+0x82/0xd0 [ 77.246890][ T792] print_deadlock_bug+0x40a/0x650 [ 77.247056][ T792] validate_chain+0x5bf/0xae0 [ 77.247206][ T792] ? __pfx_validate_chain+0x10/0x10 [ 77.247358][ T792] ? hlock_class+0x4e/0x130 [ 77.247503][ T792] ? mark_lock+0x38/0x3e0 [ 77.247617][ T792] __lock_acquire+0xb9a/0x1680 [ 77.247772][ T792] lock_acquire.part.0+0xeb/0x330 [ 77.247927][ T792] ? blocking_notifier_call_chain+0x50/0x90 [ 77.248110][ T792] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 77.248299][ T792] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 77.248446][ T792] ? trace_lock_acquire+0x14c/0x1f0 [ 77.248593][ T792] ? lock_acquire+0x32/0xc0 [ 77.248739][ T792] ? blocking_notifier_call_chain+0x50/0x90 [ 77.248922][ T792] down_read+0x9f/0x340 [ 77.249037][ T792] ? blocking_notifier_call_chain+0x50/0x90 [ 77.249218][ T792] ? __pfx_down_read+0x10/0x10 [ 77.249432][ T792] ? __lock_release+0x103/0x460 [ 77.249631][ T792] ? netconsole_netdev_event+0x2c1/0x620 [ 77.249806][ T792] ? __pfx___lock_release+0x10/0x10 [ 77.249981][ T792] blocking_notifier_call_chain+0x50/0x90 [ 77.250151][ T792] __netdev_upper_dev_unlink+0xd9/0x220 [ 77.250328][ T792] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 77.250537][ T792] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 77.250711][ T792] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 77.250921][ T792] ? rtnl_is_locked+0x15/0x20 [ 77.251098][ T792] netdev_upper_dev_unlink+0x71/0xa0 [ 77.251268][ T792] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 77.251488][ T792] ? netconsole_netdev_event+0x2c1/0x620 [ 77.251660][ T792] ? mutex_is_locked+0x1c/0x60 [ 77.251831][ T792] ? rtnl_is_locked+0x15/0x20 [ 77.252004][ T792] ? netdev_master_upper_dev_get+0x13/0x120 [ 77.252219][ T792] vrf_device_event+0x78/0xe0 [vrf] [ 77.252396][ T792] notifier_call_chain+0xcd/0x150 [ 77.252568][ T792] blocking_notifier_call_chain+0x66/0x90 [ 77.252745][ T792] unregister_netdevice_many_notify+0xa7b/0x1580 [ 77.252958][ T792] ? hlock_class+0x4e/0x130 [ 77.253127][ T792] ? mark_lock+0x38/0x3e0 [ 77.253253][ T792] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 77.253467][ T792] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 77.253678][ T792] ? kfree+0xf3/0x330 [ 77.253809][ T792] ? vlan_vid_del+0x310/0x5e0 [ 77.253985][ T792] ? vlan_vid_del+0x310/0x5e0 [ 77.254154][ T792] rtnl_dellink+0x348/0xa40 [ 77.254327][ T792] ? __pfx_rtnl_dellink+0x10/0x10 [ 77.254511][ T792] ? find_held_lock+0x2c/0x110 [ 77.254683][ T792] ? __lock_release+0x103/0x460 [ 77.254856][ T792] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 77.255026][ T792] ? __pfx___lock_release+0x10/0x10 [ 77.255197][ T792] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 77.255373][ T792] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 77.255544][ T792] ? __pfx_rtnl_dellink+0x10/0x10 [ 77.255714][ T792] rtnetlink_rcv_msg+0x712/0xc10 [ 77.255886][ T792] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 77.256056][ T792] ? hlock_class+0x4e/0x130 [ 77.256231][ T792] ? mark_lock+0x38/0x3e0 [ 77.256362][ T792] ? __lock_acquire+0xb9a/0x1680 [ 77.256541][ T792] netlink_rcv_skb+0x130/0x360 [ 77.256712][ T792] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 77.256886][ T792] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 77.257061][ T792] ? netlink_deliver_tap+0x13e/0x340 [ 77.257234][ T792] ? netlink_deliver_tap+0xc3/0x340 [ 77.257403][ T792] netlink_unicast+0x44b/0x710 [ 77.257572][ T792] ? __pfx_netlink_unicast+0x10/0x10 [ 77.257743][ T792] ? find_held_lock+0x2c/0x110 [ 77.257912][ T792] netlink_sendmsg+0x723/0xbe0 [ 77.258082][ T792] ? __pfx_netlink_sendmsg+0x10/0x10 [ 77.258253][ T792] ____sys_sendmsg+0x7ac/0xa10 [ 77.258426][ T792] ? __pfx_____sys_sendmsg+0x10/0x10 [ 77.258600][ T792] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 77.258820][ T792] ___sys_sendmsg+0xee/0x170 [ 77.259000][ T792] ? __pfx____sys_sendmsg+0x10/0x10 [ 77.259176][ T792] ? kasan_save_stack+0x34/0x50 [ 77.259361][ T792] ? kasan_save_stack+0x24/0x50 [ 77.259535][ T792] ? __kasan_record_aux_stack+0x8e/0xa0 [ 77.259709][ T792] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 77.259919][ T792] ? __x64_sys_close+0x7c/0xd0 [ 77.260081][ T792] ? do_syscall_64+0xc1/0x1d0 [ 77.260245][ T792] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.260449][ T792] ? __lock_acquire+0xb9a/0x1680 [ 77.260611][ T792] ? find_held_lock+0x2c/0x110 [ 77.260771][ T792] ? __lock_release+0x103/0x460 [ 77.260934][ T792] ? __virt_addr_valid+0x22b/0x430 [ 77.261097][ T792] ? __pfx___lock_release+0x10/0x10 [ 77.261260][ T792] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 77.261428][ T792] __sys_sendmsg+0x109/0x1a0 [ 77.261591][ T792] ? __pfx___sys_sendmsg+0x10/0x10 [ 77.261751][ T792] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 77.261957][ T792] do_syscall_64+0xc1/0x1d0 [ 77.262118][ T792] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 77.262318][ T792] RIP: 0033:0x7efed5a629a7 [ 77.262494][ T792] 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 [ 77.263063][ T792] RSP: 002b:00007ffd3d809e68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 77.263309][ T792] RAX: ffffffffffffffda RBX: 00007ffd3d80a590 RCX: 00007efed5a629a7 [ 77.263554][ T792] RDX: 0000000000000000 RSI: 00007ffd3d809ed0 RDI: 0000000000000005 [ 77.263798][ T792] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 77.264040][ T792] R10: 00007efed5920ef8 R11: 0000000000000246 R12: 0000000000000002 [ 77.264286][ T792] R13: 0000000067792bb0 R14: 0000000000498600 R15: 0000000000000000 [ 77.264533][ T792]