[ 13.650356][ T301] 8021q: 802.1Q VLAN Support v1.8 [ 17.130823][ T346] br1: port 1(vx100) entered blocking state [ 17.131254][ T346] br1: port 1(vx100) entered disabled state [ 17.131856][ T346] vx100: entered allmulticast mode [ 17.134011][ T346] vx100: entered promiscuous mode [ 17.134988][ T346] br1: port 1(vx100) entered blocking state [ 17.135346][ T346] br1: port 1(vx100) entered forwarding state [ 17.297252][ T348] br1: port 2(veth1) entered blocking state [ 17.298516][ T348] br1: port 2(veth1) entered disabled state [ 17.298855][ T348] veth1: entered allmulticast mode [ 17.300861][ T348] veth1: entered promiscuous mode [ 17.394755][ T40] br1: port 2(veth1) entered blocking state [ 17.395222][ T40] br1: port 2(veth1) entered forwarding state [ 17.565975][ T351] br1: port 3(veth2) entered blocking state [ 17.566256][ T351] br1: port 3(veth2) entered disabled state [ 17.566569][ T351] veth2: entered allmulticast mode [ 17.568496][ T351] veth2: entered promiscuous mode [ 17.656419][ T37] br1: port 3(veth2) entered blocking state [ 17.656712][ T37] br1: port 3(veth2) entered forwarding state [ 20.916393][ T398] br2: port 1(w1) entered blocking state [ 20.916651][ T398] br2: port 1(w1) entered disabled state [ 20.916910][ T398] w1: entered allmulticast mode [ 20.918907][ T398] w1: entered promiscuous mode [ 21.502286][ T405] br2: port 2(vx100) entered blocking state [ 21.502627][ T405] br2: port 2(vx100) entered disabled state [ 21.502929][ T405] vx100: entered allmulticast mode [ 21.504903][ T405] vx100: entered promiscuous mode [ 21.505448][ T405] br2: port 2(vx100) entered blocking state [ 21.505714][ T405] br2: port 2(vx100) entered forwarding state [ 22.165789][ T37] br2: port 1(w1) entered blocking state [ 22.166300][ T37] br2: port 1(w1) entered forwarding state [ 24.479228][ T445] br2: port 1(w1) entered blocking state [ 24.479521][ T445] br2: port 1(w1) entered disabled state [ 24.479769][ T445] w1: entered allmulticast mode [ 24.481938][ T445] w1: entered promiscuous mode [ 25.062223][ T452] br2: port 2(vx100) entered blocking state [ 25.062604][ T452] br2: port 2(vx100) entered disabled state [ 25.062869][ T452] vx100: entered allmulticast mode [ 25.064716][ T452] vx100: entered promiscuous mode [ 25.065429][ T452] br2: port 2(vx100) entered blocking state [ 25.065676][ T452] br2: port 2(vx100) entered forwarding state [ 25.784970][ T39] br2: port 1(w1) entered blocking state [ 25.785390][ T39] br2: port 1(w1) entered forwarding state [ 37.874445][ T67] vx100: left allmulticast mode [ 37.874814][ T67] vx100: left promiscuous mode [ 37.875222][ T67] br2: port 2(vx100) entered disabled state [ 37.878817][ T67] w1: left allmulticast mode [ 37.879088][ T67] w1: left promiscuous mode [ 37.880427][ T67] br2: port 1(w1) entered disabled state [ 38.274777][ T67] vx100: left allmulticast mode [ 38.275071][ T67] vx100: left promiscuous mode [ 38.275480][ T67] br2: port 2(vx100) entered disabled state [ 38.277930][ T67] w1: left allmulticast mode [ 38.278196][ T67] w1: left promiscuous mode [ 38.278573][ T67] br2: port 1(w1) entered disabled state [ 38.858639][ T556] ip (556) used greatest stack depth: 23664 bytes left [ 40.345851][ T574] br1: port 3(veth2) entered disabled state [ 40.435833][ T576] veth2: left allmulticast mode [ 40.436075][ T576] veth2: left promiscuous mode [ 40.436967][ T576] br1: port 3(veth2) entered disabled state [ 40.586888][ T578] br1: port 2(veth1) entered disabled state [ 40.683580][ T579] veth1: left allmulticast mode [ 40.683805][ T579] veth1: left promiscuous mode [ 40.684119][ T579] br1: port 2(veth1) entered disabled state [ 40.755801][ T580] vx100: left allmulticast mode [ 40.756028][ T580] vx100: left promiscuous mode [ 40.756351][ T580] br1: port 1(vx100) entered disabled state [ 41.616191][ T589] [ 41.616349][ T589] ============================================ [ 41.616587][ T589] WARNING: possible recursive locking detected [ 41.616822][ T589] 6.13.0-rc5-virtme #1 Not tainted [ 41.617013][ T589] -------------------------------------------- [ 41.617244][ T589] ip/589 is trying to acquire lock: [ 41.617429][ T589] ffffffffbbfd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 41.617815][ T589] [ 41.617815][ T589] but task is already holding lock: [ 41.618089][ T589] ffffffffbbfd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 41.618463][ T589] [ 41.618463][ T589] other info that might help us debug this: [ 41.618746][ T589] Possible unsafe locking scenario: [ 41.618746][ T589] [ 41.619017][ T589] CPU0 [ 41.619164][ T589] ---- [ 41.619304][ T589] lock((netdev_chain).rwsem); [ 41.619491][ T589] lock((netdev_chain).rwsem); [ 41.619682][ T589] [ 41.619682][ T589] *** DEADLOCK *** [ 41.619682][ T589] [ 41.619959][ T589] May be due to missing lock nesting notation [ 41.619959][ T589] [ 41.620238][ T589] 2 locks held by ip/589: [ 41.620380][ T589] #0: ffffffffbbfe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 41.620716][ T589] #1: ffffffffbbfd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 41.621089][ T589] [ 41.621089][ T589] stack backtrace: [ 41.621318][ T589] CPU: 3 UID: 0 PID: 589 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 41.621611][ T589] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 41.621844][ T589] Call Trace: [ 41.621988][ T589] [ 41.622085][ T589] dump_stack_lvl+0x82/0xd0 [ 41.622278][ T589] print_deadlock_bug+0x40a/0x650 [ 41.622467][ T589] validate_chain+0x5bf/0xae0 [ 41.622659][ T589] ? __pfx_validate_chain+0x10/0x10 [ 41.622850][ T589] ? hlock_class+0x4e/0x130 [ 41.623035][ T589] ? mark_lock+0x38/0x3e0 [ 41.623183][ T589] __lock_acquire+0xb9a/0x1680 [ 41.623374][ T589] lock_acquire.part.0+0xeb/0x330 [ 41.623565][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 41.623800][ T589] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 41.624039][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.624226][ T589] ? trace_lock_acquire+0x14c/0x1f0 [ 41.624415][ T589] ? lock_acquire+0x32/0xc0 [ 41.624608][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 41.624847][ T589] down_read+0x9f/0x340 [ 41.624992][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 41.625227][ T589] ? __pfx_down_read+0x10/0x10 [ 41.625414][ T589] ? __lock_release+0x103/0x460 [ 41.625602][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 41.625790][ T589] ? __pfx___lock_release+0x10/0x10 [ 41.625980][ T589] blocking_notifier_call_chain+0x50/0x90 [ 41.626175][ T589] __netdev_upper_dev_unlink+0xd9/0x220 [ 41.626365][ T589] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 41.626599][ T589] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 41.626788][ T589] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 41.627021][ T589] ? rtnl_is_locked+0x15/0x20 [ 41.627210][ T589] netdev_upper_dev_unlink+0x71/0xa0 [ 41.627398][ T589] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 41.627636][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 41.627825][ T589] ? mutex_is_locked+0x1c/0x60 [ 41.628013][ T589] ? rtnl_is_locked+0x15/0x20 [ 41.628202][ T589] ? netdev_master_upper_dev_get+0x13/0x120 [ 41.628436][ T589] vrf_device_event+0x78/0xe0 [vrf] [ 41.628627][ T589] notifier_call_chain+0xcd/0x150 [ 41.628816][ T589] blocking_notifier_call_chain+0x66/0x90 [ 41.629010][ T589] unregister_netdevice_many_notify+0xa7b/0x1580 [ 41.629261][ T589] ? hlock_class+0x4e/0x130 [ 41.629448][ T589] ? mark_lock+0x38/0x3e0 [ 41.629592][ T589] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 41.629829][ T589] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 41.630065][ T589] ? kfree+0xf3/0x330 [ 41.630214][ T589] ? vlan_vid_del+0x310/0x5e0 [ 41.630405][ T589] ? vlan_vid_del+0x310/0x5e0 [ 41.630595][ T589] rtnl_dellink+0x348/0xa40 [ 41.630794][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 41.630999][ T589] ? find_held_lock+0x2c/0x110 [ 41.631188][ T589] ? __lock_release+0x103/0x460 [ 41.631377][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 41.631565][ T589] ? __pfx___lock_release+0x10/0x10 [ 41.631759][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.631956][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 41.632142][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 41.632332][ T589] rtnetlink_rcv_msg+0x712/0xc10 [ 41.632519][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 41.632706][ T589] ? hlock_class+0x4e/0x130 [ 41.632892][ T589] ? mark_lock+0x38/0x3e0 [ 41.633039][ T589] ? __lock_acquire+0xb9a/0x1680 [ 41.633224][ T589] netlink_rcv_skb+0x130/0x360 [ 41.633410][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 41.633600][ T589] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 41.633791][ T589] ? netlink_deliver_tap+0x13e/0x340 [ 41.633980][ T589] ? netlink_deliver_tap+0xc3/0x340 [ 41.634170][ T589] netlink_unicast+0x44b/0x710 [ 41.634362][ T589] ? __pfx_netlink_unicast+0x10/0x10 [ 41.634551][ T589] ? find_held_lock+0x2c/0x110 [ 41.634740][ T589] netlink_sendmsg+0x723/0xbe0 [ 41.634928][ T589] ? __pfx_netlink_sendmsg+0x10/0x10 [ 41.635117][ T589] ____sys_sendmsg+0x7ac/0xa10 [ 41.635306][ T589] ? __pfx_____sys_sendmsg+0x10/0x10 [ 41.635491][ T589] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 41.635731][ T589] ___sys_sendmsg+0xee/0x170 [ 41.635917][ T589] ? __pfx____sys_sendmsg+0x10/0x10 [ 41.636107][ T589] ? kasan_save_stack+0x34/0x50 [ 41.636295][ T589] ? kasan_save_stack+0x24/0x50 [ 41.636482][ T589] ? __kasan_record_aux_stack+0x8e/0xa0 [ 41.636683][ T589] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 41.636919][ T589] ? __x64_sys_close+0x7c/0xd0 [ 41.637107][ T589] ? do_syscall_64+0xc1/0x1d0 [ 41.637299][ T589] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 41.637533][ T589] ? __lock_acquire+0xb9a/0x1680 [ 41.637723][ T589] ? find_held_lock+0x2c/0x110 [ 41.637911][ T589] ? __lock_release+0x103/0x460 [ 41.638097][ T589] ? __virt_addr_valid+0x22b/0x430 [ 41.638287][ T589] ? __pfx___lock_release+0x10/0x10 [ 41.638474][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.638668][ T589] __sys_sendmsg+0x109/0x1a0 [ 41.638857][ T589] ? __pfx___sys_sendmsg+0x10/0x10 [ 41.639057][ T589] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 41.639302][ T589] do_syscall_64+0xc1/0x1d0 [ 41.639507][ T589] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 41.639740][ T589] RIP: 0033:0x7f41fbde29a7 [ 41.639935][ T589] 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 [ 41.640591][ T589] RSP: 002b:00007ffc26a10f28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 41.640876][ T589] RAX: ffffffffffffffda RBX: 00007ffc26a11650 RCX: 00007f41fbde29a7 [ 41.641158][ T589] RDX: 0000000000000000 RSI: 00007ffc26a10f90 RDI: 0000000000000005 [ 41.641443][ T589] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 41.641724][ T589] R10: 00007f41fbca0ef8 R11: 0000000000000246 R12: 0000000000000002 [ 41.642004][ T589] R13: 0000000067792ba1 R14: 0000000000498600 R15: 0000000000000000 [ 41.642288][ T589]