[ 12.170778][ T259] ip (259) used greatest stack depth: 23424 bytes left [ 14.888494][ T300] 8021q: 802.1Q VLAN Support v1.8 [ 18.539516][ T346] br1: port 1(vx100) entered blocking state [ 18.540044][ T346] br1: port 1(vx100) entered disabled state [ 18.540497][ T346] vx100: entered allmulticast mode [ 18.542632][ T346] vx100: entered promiscuous mode [ 18.543625][ T346] br1: port 1(vx100) entered blocking state [ 18.544003][ T346] br1: port 1(vx100) entered forwarding state [ 18.722275][ T348] br1: port 2(veth1) entered blocking state [ 18.722893][ T348] br1: port 2(veth1) entered disabled state [ 18.723196][ T348] veth1: entered allmulticast mode [ 18.725107][ T348] veth1: entered promiscuous mode [ 18.817620][ T40] br1: port 2(veth1) entered blocking state [ 18.818078][ T40] br1: port 2(veth1) entered forwarding state [ 18.971304][ T351] br1: port 3(veth2) entered blocking state [ 18.971662][ T351] br1: port 3(veth2) entered disabled state [ 18.971960][ T351] veth2: entered allmulticast mode [ 18.973912][ T351] veth2: entered promiscuous mode [ 19.070725][ T37] br1: port 3(veth2) entered blocking state [ 19.071195][ T37] br1: port 3(veth2) entered forwarding state [ 22.570413][ T398] br2: port 1(w1) entered blocking state [ 22.570701][ T398] br2: port 1(w1) entered disabled state [ 22.570962][ T398] w1: entered allmulticast mode [ 22.573984][ T398] w1: entered promiscuous mode [ 23.174797][ T406] br2: port 2(vx100) entered blocking state [ 23.175113][ T406] br2: port 2(vx100) entered disabled state [ 23.175401][ T406] vx100: entered allmulticast mode [ 23.177428][ T406] vx100: entered promiscuous mode [ 23.177965][ T406] br2: port 2(vx100) entered blocking state [ 23.178221][ T406] br2: port 2(vx100) entered forwarding state [ 23.940392][ T40] br2: port 1(w1) entered blocking state [ 23.940901][ T40] br2: port 1(w1) entered forwarding state [ 26.322815][ T447] br2: port 1(w1) entered blocking state [ 26.323125][ T447] br2: port 1(w1) entered disabled state [ 26.323488][ T447] w1: entered allmulticast mode [ 26.325601][ T447] w1: entered promiscuous mode [ 26.955158][ T454] br2: port 2(vx100) entered blocking state [ 26.955614][ T454] br2: port 2(vx100) entered disabled state [ 26.956048][ T454] vx100: entered allmulticast mode [ 26.959762][ T454] vx100: entered promiscuous mode [ 26.960551][ T454] br2: port 2(vx100) entered blocking state [ 26.960819][ T454] br2: port 2(vx100) entered forwarding state [ 27.717291][ T37] br2: port 1(w1) entered blocking state [ 27.717701][ T37] br2: port 1(w1) entered forwarding state [ 40.218922][ T11] vx100: left allmulticast mode [ 40.219299][ T11] vx100: left promiscuous mode [ 40.219744][ T11] br2: port 2(vx100) entered disabled state [ 40.223179][ T11] w1: left allmulticast mode [ 40.223409][ T11] w1: left promiscuous mode [ 40.223738][ T11] br2: port 1(w1) entered disabled state [ 40.751942][ T11] vx100: left allmulticast mode [ 40.752179][ T11] vx100: left promiscuous mode [ 40.752503][ T11] br2: port 2(vx100) entered disabled state [ 40.754813][ T11] w1: left allmulticast mode [ 40.755007][ T11] w1: left promiscuous mode [ 40.755322][ T11] br2: port 1(w1) entered disabled state [ 42.894467][ T576] br1: port 3(veth2) entered disabled state [ 42.963457][ T577] veth2: left allmulticast mode [ 42.963743][ T577] veth2: left promiscuous mode [ 42.964118][ T577] br1: port 3(veth2) entered disabled state [ 43.124772][ T579] br1: port 2(veth1) entered disabled state [ 43.215514][ T580] veth1: left allmulticast mode [ 43.215792][ T580] veth1: left promiscuous mode [ 43.216149][ T580] br1: port 2(veth1) entered disabled state [ 43.296633][ T581] vx100: left allmulticast mode [ 43.296887][ T581] vx100: left promiscuous mode [ 43.297237][ T581] br1: port 1(vx100) entered disabled state [ 44.227394][ T590] [ 44.227666][ T590] ============================================ [ 44.227941][ T590] WARNING: possible recursive locking detected [ 44.228214][ T590] 6.13.0-rc5-virtme #1 Not tainted [ 44.228456][ T590] -------------------------------------------- [ 44.228741][ T590] ip/590 is trying to acquire lock: [ 44.228972][ T590] ffffffffafdd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 44.229451][ T590] [ 44.229451][ T590] but task is already holding lock: [ 44.229784][ T590] ffffffffafdd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 44.230246][ T590] [ 44.230246][ T590] other info that might help us debug this: [ 44.230579][ T590] Possible unsafe locking scenario: [ 44.230579][ T590] [ 44.230907][ T590] CPU0 [ 44.231083][ T590] ---- [ 44.231257][ T590] lock((netdev_chain).rwsem); [ 44.231508][ T590] lock((netdev_chain).rwsem); [ 44.231747][ T590] [ 44.231747][ T590] *** DEADLOCK *** [ 44.231747][ T590] [ 44.232084][ T590] May be due to missing lock nesting notation [ 44.232084][ T590] [ 44.232422][ T590] 2 locks held by ip/590: [ 44.232594][ T590] #0: ffffffffafde7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 44.233025][ T590] #1: ffffffffafdd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 44.233496][ T590] [ 44.233496][ T590] stack backtrace: [ 44.233781][ T590] CPU: 3 UID: 0 PID: 590 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 44.234131][ T590] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 44.234420][ T590] Call Trace: [ 44.234595][ T590] [ 44.234718][ T590] dump_stack_lvl+0x82/0xd0 [ 44.234961][ T590] print_deadlock_bug+0x40a/0x650 [ 44.235197][ T590] validate_chain+0x5bf/0xae0 [ 44.235429][ T590] ? __pfx_validate_chain+0x10/0x10 [ 44.235672][ T590] ? hlock_class+0x4e/0x130 [ 44.235895][ T590] ? mark_lock+0x38/0x3e0 [ 44.236068][ T590] __lock_acquire+0xb9a/0x1680 [ 44.236289][ T590] lock_acquire.part.0+0xeb/0x330 [ 44.236524][ T590] ? blocking_notifier_call_chain+0x50/0x90 [ 44.236815][ T590] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 44.237112][ T590] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.237343][ T590] ? trace_lock_acquire+0x14c/0x1f0 [ 44.237607][ T590] ? lock_acquire+0x32/0xc0 [ 44.237856][ T590] ? blocking_notifier_call_chain+0x50/0x90 [ 44.238083][ T590] down_read+0x9f/0x340 [ 44.238208][ T590] ? blocking_notifier_call_chain+0x50/0x90 [ 44.238418][ T590] ? __pfx_down_read+0x10/0x10 [ 44.238580][ T590] ? __lock_release+0x103/0x460 [ 44.238742][ T590] ? netconsole_netdev_event+0x2c1/0x620 [ 44.238916][ T590] ? __pfx___lock_release+0x10/0x10 [ 44.239081][ T590] blocking_notifier_call_chain+0x50/0x90 [ 44.239243][ T590] __netdev_upper_dev_unlink+0xd9/0x220 [ 44.239421][ T590] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 44.239623][ T590] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 44.239785][ T590] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 44.239992][ T590] ? rtnl_is_locked+0x15/0x20 [ 44.240157][ T590] netdev_upper_dev_unlink+0x71/0xa0 [ 44.240318][ T590] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 44.240526][ T590] ? netconsole_netdev_event+0x2c1/0x620 [ 44.240693][ T590] ? mutex_is_locked+0x1c/0x60 [ 44.240853][ T590] ? rtnl_is_locked+0x15/0x20 [ 44.241015][ T590] ? netdev_master_upper_dev_get+0x13/0x120 [ 44.241224][ T590] vrf_device_event+0x78/0xe0 [vrf] [ 44.241439][ T590] notifier_call_chain+0xcd/0x150 [ 44.241590][ T590] blocking_notifier_call_chain+0x66/0x90 [ 44.241740][ T590] unregister_netdevice_many_notify+0xa7b/0x1580 [ 44.241923][ T590] ? hlock_class+0x4e/0x130 [ 44.242076][ T590] ? mark_lock+0x38/0x3e0 [ 44.242190][ T590] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 44.242390][ T590] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 44.242576][ T590] ? kfree+0xf3/0x330 [ 44.242692][ T590] ? vlan_vid_del+0x310/0x5e0 [ 44.242846][ T590] ? vlan_vid_del+0x310/0x5e0 [ 44.243000][ T590] rtnl_dellink+0x348/0xa40 [ 44.243154][ T590] ? __pfx_rtnl_dellink+0x10/0x10 [ 44.243319][ T590] ? find_held_lock+0x2c/0x110 [ 44.243478][ T590] ? __lock_release+0x103/0x460 [ 44.243630][ T590] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 44.243789][ T590] ? __pfx___lock_release+0x10/0x10 [ 44.243942][ T590] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.244094][ T590] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 44.244244][ T590] ? __pfx_rtnl_dellink+0x10/0x10 [ 44.244417][ T590] rtnetlink_rcv_msg+0x712/0xc10 [ 44.244571][ T590] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 44.244727][ T590] ? hlock_class+0x4e/0x130 [ 44.244873][ T590] ? mark_lock+0x38/0x3e0 [ 44.244987][ T590] ? __lock_acquire+0xb9a/0x1680 [ 44.245141][ T590] netlink_rcv_skb+0x130/0x360 [ 44.245288][ T590] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 44.245447][ T590] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 44.245602][ T590] ? netlink_deliver_tap+0x13e/0x340 [ 44.245762][ T590] ? netlink_deliver_tap+0xc3/0x340 [ 44.245915][ T590] netlink_unicast+0x44b/0x710 [ 44.246067][ T590] ? __pfx_netlink_unicast+0x10/0x10 [ 44.246215][ T590] ? find_held_lock+0x2c/0x110 [ 44.246395][ T590] netlink_sendmsg+0x723/0xbe0 [ 44.246546][ T590] ? __pfx_netlink_sendmsg+0x10/0x10 [ 44.246696][ T590] ____sys_sendmsg+0x7ac/0xa10 [ 44.246849][ T590] ? __pfx_____sys_sendmsg+0x10/0x10 [ 44.246999][ T590] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 44.247199][ T590] ___sys_sendmsg+0xee/0x170 [ 44.247349][ T590] ? __pfx____sys_sendmsg+0x10/0x10 [ 44.247504][ T590] ? kasan_save_stack+0x34/0x50 [ 44.247660][ T590] ? kasan_save_stack+0x24/0x50 [ 44.247840][ T590] ? __kasan_record_aux_stack+0x8e/0xa0 [ 44.248066][ T590] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 44.248342][ T590] ? __x64_sys_close+0x7c/0xd0 [ 44.248560][ T590] ? do_syscall_64+0xc1/0x1d0 [ 44.248775][ T590] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 44.249005][ T590] ? __lock_acquire+0xb9a/0x1680 [ 44.249169][ T590] ? find_held_lock+0x2c/0x110 [ 44.249323][ T590] ? __lock_release+0x103/0x460 [ 44.249480][ T590] ? __virt_addr_valid+0x22b/0x430 [ 44.249640][ T590] ? __pfx___lock_release+0x10/0x10 [ 44.249792][ T590] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.250004][ T590] __sys_sendmsg+0x109/0x1a0 [ 44.250207][ T590] ? __pfx___sys_sendmsg+0x10/0x10 [ 44.250423][ T590] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 44.250721][ T590] do_syscall_64+0xc1/0x1d0 [ 44.250970][ T590] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 44.251257][ T590] RIP: 0033:0x7efc883fa9a7 [ 44.251526][ T590] 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 [ 44.252349][ T590] RSP: 002b:00007ffd0ef40d08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 44.252717][ T590] RAX: ffffffffffffffda RBX: 00007ffd0ef41430 RCX: 00007efc883fa9a7 [ 44.253068][ T590] RDX: 0000000000000000 RSI: 00007ffd0ef40d70 RDI: 0000000000000005 [ 44.253413][ T590] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 44.253764][ T590] R10: 00007efc882b8ef8 R11: 0000000000000246 R12: 0000000000000002 [ 44.254122][ T590] R13: 000000006779543f R14: 0000000000498600 R15: 0000000000000000 [ 44.254496][ T590]