[ 11.318011][ T249] ip (249) used greatest stack depth: 23792 bytes left [ 14.234922][ T300] 8021q: 802.1Q VLAN Support v1.8 [ 17.674038][ T345] br1: port 1(vx100) entered blocking state [ 17.674677][ T345] br1: port 1(vx100) entered disabled state [ 17.675038][ T345] vx100: entered allmulticast mode [ 17.685623][ T345] vx100: entered promiscuous mode [ 17.686569][ T345] br1: port 1(vx100) entered blocking state [ 17.686929][ T345] br1: port 1(vx100) entered forwarding state [ 17.865828][ T347] br1: port 2(veth1) entered blocking state [ 17.866179][ T347] br1: port 2(veth1) entered disabled state [ 17.866528][ T347] veth1: entered allmulticast mode [ 17.868473][ T347] veth1: entered promiscuous mode [ 17.964467][ T37] br1: port 2(veth1) entered blocking state [ 17.964953][ T37] br1: port 2(veth1) entered forwarding state [ 18.145555][ T350] br1: port 3(veth2) entered blocking state [ 18.145838][ T350] br1: port 3(veth2) entered disabled state [ 18.146112][ T350] veth2: entered allmulticast mode [ 18.147996][ T350] veth2: entered promiscuous mode [ 18.237863][ T40] br1: port 3(veth2) entered blocking state [ 18.238203][ T40] br1: port 3(veth2) entered forwarding state [ 21.622835][ T398] br2: port 1(w1) entered blocking state [ 21.623102][ T398] br2: port 1(w1) entered disabled state [ 21.623364][ T398] w1: entered allmulticast mode [ 21.625335][ T398] w1: entered promiscuous mode [ 22.239617][ T405] br2: port 2(vx100) entered blocking state [ 22.239902][ T405] br2: port 2(vx100) entered disabled state [ 22.240180][ T405] vx100: entered allmulticast mode [ 22.242150][ T405] vx100: entered promiscuous mode [ 22.242680][ T405] br2: port 2(vx100) entered blocking state [ 22.242922][ T405] br2: port 2(vx100) entered forwarding state [ 22.995398][ T37] br2: port 1(w1) entered blocking state [ 22.995844][ T37] br2: port 1(w1) entered forwarding state [ 25.379674][ T446] br2: port 1(w1) entered blocking state [ 25.379904][ T446] br2: port 1(w1) entered disabled state [ 25.380129][ T446] w1: entered allmulticast mode [ 25.383140][ T446] w1: entered promiscuous mode [ 25.938054][ T453] br2: port 2(vx100) entered blocking state [ 25.938420][ T453] br2: port 2(vx100) entered disabled state [ 25.938678][ T453] vx100: entered allmulticast mode [ 25.940544][ T453] vx100: entered promiscuous mode [ 25.941037][ T453] br2: port 2(vx100) entered blocking state [ 25.941515][ T453] br2: port 2(vx100) entered forwarding state [ 26.590289][ T40] br2: port 1(w1) entered blocking state [ 26.590865][ T40] br2: port 1(w1) entered forwarding state [ 38.688336][ T547] ip (547) used greatest stack depth: 23336 bytes left [ 38.789884][ T11] vx100: left allmulticast mode [ 38.790193][ T11] vx100: left promiscuous mode [ 38.791410][ T11] br2: port 2(vx100) entered disabled state [ 38.794955][ T11] w1: left allmulticast mode [ 38.795195][ T11] w1: left promiscuous mode [ 38.795530][ T11] br2: port 1(w1) entered disabled state [ 39.349237][ T11] vx100: left allmulticast mode [ 39.349503][ T11] vx100: left promiscuous mode [ 39.349840][ T11] br2: port 2(vx100) entered disabled state [ 39.352737][ T11] w1: left allmulticast mode [ 39.352975][ T11] w1: left promiscuous mode [ 39.353330][ T11] br2: port 1(w1) entered disabled state [ 41.478379][ T575] br1: port 3(veth2) entered disabled state [ 41.552917][ T576] veth2: left allmulticast mode [ 41.553182][ T576] veth2: left promiscuous mode [ 41.553538][ T576] br1: port 3(veth2) entered disabled state [ 41.714791][ T578] br1: port 2(veth1) entered disabled state [ 41.798630][ T579] veth1: left allmulticast mode [ 41.798857][ T579] veth1: left promiscuous mode [ 41.799193][ T579] br1: port 2(veth1) entered disabled state [ 41.877402][ T580] vx100: left allmulticast mode [ 41.877665][ T580] vx100: left promiscuous mode [ 41.878012][ T580] br1: port 1(vx100) entered disabled state [ 42.675615][ T589] [ 42.675781][ T589] ============================================ [ 42.675968][ T589] WARNING: possible recursive locking detected [ 42.676148][ T589] 6.13.0-rc5-virtme #1 Not tainted [ 42.676300][ T589] -------------------------------------------- [ 42.676479][ T589] ip/589 is trying to acquire lock: [ 42.676623][ T589] ffffffffb93d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 42.676957][ T589] [ 42.676957][ T589] but task is already holding lock: [ 42.677174][ T589] ffffffffb93d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 42.677494][ T589] [ 42.677494][ T589] other info that might help us debug this: [ 42.677713][ T589] Possible unsafe locking scenario: [ 42.677713][ T589] [ 42.677946][ T589] CPU0 [ 42.678065][ T589] ---- [ 42.678183][ T589] lock((netdev_chain).rwsem); [ 42.678339][ T589] lock((netdev_chain).rwsem); [ 42.678504][ T589] [ 42.678504][ T589] *** DEADLOCK *** [ 42.678504][ T589] [ 42.678728][ T589] May be due to missing lock nesting notation [ 42.678728][ T589] [ 42.678957][ T589] 2 locks held by ip/589: [ 42.679082][ T589] #0: ffffffffb93e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 42.679350][ T589] #1: ffffffffb93d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 42.679659][ T589] [ 42.679659][ T589] stack backtrace: [ 42.679852][ T589] CPU: 0 UID: 0 PID: 589 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 42.680078][ T589] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 42.680265][ T589] Call Trace: [ 42.680380][ T589] [ 42.680457][ T589] dump_stack_lvl+0x82/0xd0 [ 42.680625][ T589] print_deadlock_bug+0x40a/0x650 [ 42.680779][ T589] validate_chain+0x5bf/0xae0 [ 42.680935][ T589] ? __pfx_validate_chain+0x10/0x10 [ 42.681083][ T589] ? hlock_class+0x4e/0x130 [ 42.681229][ T589] ? mark_lock+0x38/0x3e0 [ 42.681354][ T589] __lock_acquire+0xb9a/0x1680 [ 42.681503][ T589] lock_acquire.part.0+0xeb/0x330 [ 42.681655][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 42.681860][ T589] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 42.682059][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.682206][ T589] ? trace_lock_acquire+0x14c/0x1f0 [ 42.682352][ T589] ? lock_acquire+0x32/0xc0 [ 42.682514][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 42.682698][ T589] down_read+0x9f/0x340 [ 42.682815][ T589] ? blocking_notifier_call_chain+0x50/0x90 [ 42.682999][ T589] ? __pfx_down_read+0x10/0x10 [ 42.683146][ T589] ? __lock_release+0x103/0x460 [ 42.683291][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 42.683438][ T589] ? __pfx___lock_release+0x10/0x10 [ 42.683585][ T589] blocking_notifier_call_chain+0x50/0x90 [ 42.683733][ T589] __netdev_upper_dev_unlink+0xd9/0x220 [ 42.683884][ T589] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 42.684076][ T589] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 42.684222][ T589] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 42.684415][ T589] ? rtnl_is_locked+0x15/0x20 [ 42.684564][ T589] netdev_upper_dev_unlink+0x71/0xa0 [ 42.684709][ T589] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 42.684898][ T589] ? netconsole_netdev_event+0x2c1/0x620 [ 42.685052][ T589] ? mutex_is_locked+0x1c/0x60 [ 42.685199][ T589] ? rtnl_is_locked+0x15/0x20 [ 42.685343][ T589] ? netdev_master_upper_dev_get+0x13/0x120 [ 42.685540][ T589] vrf_device_event+0x78/0xe0 [vrf] [ 42.685690][ T589] notifier_call_chain+0xcd/0x150 [ 42.685847][ T589] blocking_notifier_call_chain+0x66/0x90 [ 42.685993][ T589] unregister_netdevice_many_notify+0xa7b/0x1580 [ 42.686179][ T589] ? hlock_class+0x4e/0x130 [ 42.686324][ T589] ? mark_lock+0x38/0x3e0 [ 42.686450][ T589] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 42.686632][ T589] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 42.686818][ T589] ? kfree+0xf3/0x330 [ 42.686933][ T589] ? vlan_vid_del+0x310/0x5e0 [ 42.687094][ T589] ? vlan_vid_del+0x310/0x5e0 [ 42.687248][ T589] rtnl_dellink+0x348/0xa40 [ 42.687398][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 42.687610][ T589] ? find_held_lock+0x2c/0x110 [ 42.687777][ T589] ? __lock_release+0x103/0x460 [ 42.687940][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 42.688103][ T589] ? __pfx___lock_release+0x10/0x10 [ 42.688262][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.688432][ T589] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 42.688595][ T589] ? __pfx_rtnl_dellink+0x10/0x10 [ 42.688759][ T589] rtnetlink_rcv_msg+0x712/0xc10 [ 42.688921][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 42.689082][ T589] ? hlock_class+0x4e/0x130 [ 42.689245][ T589] ? mark_lock+0x38/0x3e0 [ 42.689366][ T589] ? __lock_acquire+0xb9a/0x1680 [ 42.689531][ T589] netlink_rcv_skb+0x130/0x360 [ 42.689699][ T589] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 42.689863][ T589] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 42.690032][ T589] ? netlink_deliver_tap+0x13e/0x340 [ 42.690195][ T589] ? netlink_deliver_tap+0xc3/0x340 [ 42.690359][ T589] netlink_unicast+0x44b/0x710 [ 42.690519][ T589] ? __pfx_netlink_unicast+0x10/0x10 [ 42.690685][ T589] ? find_held_lock+0x2c/0x110 [ 42.690850][ T589] netlink_sendmsg+0x723/0xbe0 [ 42.691012][ T589] ? __pfx_netlink_sendmsg+0x10/0x10 [ 42.691176][ T589] ____sys_sendmsg+0x7ac/0xa10 [ 42.691339][ T589] ? __pfx_____sys_sendmsg+0x10/0x10 [ 42.691499][ T589] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 42.691701][ T589] ___sys_sendmsg+0xee/0x170 [ 42.691865][ T589] ? __pfx____sys_sendmsg+0x10/0x10 [ 42.692035][ T589] ? kasan_save_stack+0x34/0x50 [ 42.692199][ T589] ? kasan_save_stack+0x24/0x50 [ 42.692361][ T589] ? __kasan_record_aux_stack+0x8e/0xa0 [ 42.692525][ T589] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 42.692727][ T589] ? __x64_sys_close+0x7c/0xd0 [ 42.692890][ T589] ? do_syscall_64+0xc1/0x1d0 [ 42.693055][ T589] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 42.693268][ T589] ? __lock_acquire+0xb9a/0x1680 [ 42.693445][ T589] ? find_held_lock+0x2c/0x110 [ 42.693609][ T589] ? __lock_release+0x103/0x460 [ 42.693770][ T589] ? __virt_addr_valid+0x22b/0x430 [ 42.693936][ T589] ? __pfx___lock_release+0x10/0x10 [ 42.694111][ T589] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.694274][ T589] __sys_sendmsg+0x109/0x1a0 [ 42.694443][ T589] ? __pfx___sys_sendmsg+0x10/0x10 [ 42.694609][ T589] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 42.694815][ T589] do_syscall_64+0xc1/0x1d0 [ 42.694978][ T589] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 42.695179][ T589] RIP: 0033:0x7f8eab8a89a7 [ 42.695350][ 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 [ 42.695926][ T589] RSP: 002b:00007ffe6732eff8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 42.696171][ T589] RAX: ffffffffffffffda RBX: 00007ffe6732f720 RCX: 00007f8eab8a89a7 [ 42.696413][ T589] RDX: 0000000000000000 RSI: 00007ffe6732f060 RDI: 0000000000000005 [ 42.696661][ T589] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 42.696904][ T589] R10: 00007f8eab766ef8 R11: 0000000000000246 R12: 0000000000000002 [ 42.697149][ T589] R13: 0000000067790104 R14: 0000000000498600 R15: 0000000000000000 [ 42.697394][ T589]