[ 11.101467][ T249] ip (249) used greatest stack depth: 23984 bytes left [ 13.941846][ T302] 8021q: 802.1Q VLAN Support v1.8 [ 17.211965][ T346] br1: port 1(vx10) entered blocking state [ 17.212403][ T346] br1: port 1(vx10) entered disabled state [ 17.212800][ T346] vx10: entered allmulticast mode [ 17.214939][ T346] vx10: entered promiscuous mode [ 17.215896][ T346] br1: port 1(vx10) entered blocking state [ 17.216255][ T346] br1: port 1(vx10) entered forwarding state [ 17.612045][ T351] br1: port 2(vx20) entered blocking state [ 17.612350][ T351] br1: port 2(vx20) entered disabled state [ 17.612668][ T351] vx20: entered allmulticast mode [ 17.614728][ T351] vx20: entered promiscuous mode [ 17.615653][ T351] br1: port 2(vx20) entered blocking state [ 17.616071][ T351] br1: port 2(vx20) entered forwarding state [ 17.814355][ T353] br1: port 3(veth1) entered blocking state [ 17.814760][ T353] br1: port 3(veth1) entered disabled state [ 17.815138][ T353] veth1: entered allmulticast mode [ 17.817229][ T353] veth1: entered promiscuous mode [ 17.827417][ T353] ip (353) used greatest stack depth: 23944 bytes left [ 17.891550][ T40] br1: port 3(veth1) entered blocking state [ 17.892012][ T40] br1: port 3(veth1) entered forwarding state [ 18.136570][ T357] br1: port 4(veth2) entered blocking state [ 18.136900][ T357] br1: port 4(veth2) entered disabled state [ 18.137219][ T357] veth2: entered allmulticast mode [ 18.139253][ T357] veth2: entered promiscuous mode [ 18.228211][ T39] br1: port 4(veth2) entered blocking state [ 18.228551][ T39] br1: port 4(veth2) entered forwarding state [ 21.701291][ T407] br2: port 1(w1) entered blocking state [ 21.701848][ T407] br2: port 1(w1) entered disabled state [ 21.702091][ T407] w1: entered allmulticast mode [ 21.704084][ T407] w1: entered promiscuous mode [ 22.349865][ T415] br2: port 2(vx10) entered blocking state [ 22.350184][ T415] br2: port 2(vx10) entered disabled state [ 22.350494][ T415] vx10: entered allmulticast mode [ 22.352457][ T415] vx10: entered promiscuous mode [ 22.352990][ T415] br2: port 2(vx10) entered blocking state [ 22.353251][ T415] br2: port 2(vx10) entered forwarding state [ 22.926281][ T422] br2: port 3(vx20) entered blocking state [ 22.926645][ T422] br2: port 3(vx20) entered disabled state [ 22.926964][ T422] vx20: entered allmulticast mode [ 22.928912][ T422] vx20: entered promiscuous mode [ 22.929730][ T422] br2: port 3(vx20) entered blocking state [ 22.930026][ T422] br2: port 3(vx20) entered forwarding state [ 23.630744][ T37] br2: port 1(w1) entered blocking state [ 23.631287][ T37] br2: port 1(w1) entered forwarding state [ 25.872909][ T462] br2: port 1(w1) entered blocking state [ 25.873195][ T462] br2: port 1(w1) entered disabled state [ 25.873551][ T462] w1: entered allmulticast mode [ 25.875477][ T462] w1: entered promiscuous mode [ 26.528260][ T470] br2: port 2(vx10) entered blocking state [ 26.528546][ T470] br2: port 2(vx10) entered disabled state [ 26.528800][ T470] vx10: entered allmulticast mode [ 26.531011][ T470] vx10: entered promiscuous mode [ 26.531750][ T470] br2: port 2(vx10) entered blocking state [ 26.532052][ T470] br2: port 2(vx10) entered forwarding state [ 27.134489][ T477] br2: port 3(vx20) entered blocking state [ 27.134763][ T477] br2: port 3(vx20) entered disabled state [ 27.135034][ T477] vx20: entered allmulticast mode [ 27.136947][ T477] vx20: entered promiscuous mode [ 27.137475][ T477] br2: port 3(vx20) entered blocking state [ 27.137726][ T477] br2: port 3(vx20) entered forwarding state [ 27.844848][ T37] br2: port 1(w1) entered blocking state [ 27.845118][ T37] br2: port 1(w1) entered forwarding state [ 43.817805][ T67] vx20: left allmulticast mode [ 43.818215][ T67] vx20: left promiscuous mode [ 43.818751][ T67] br2: port 3(vx20) entered disabled state [ 43.822289][ T67] vx10: left allmulticast mode [ 43.822598][ T67] vx10: left promiscuous mode [ 43.822925][ T67] br2: port 2(vx10) entered disabled state [ 43.825609][ T67] w1: left allmulticast mode [ 43.825837][ T67] w1: left promiscuous mode [ 43.826174][ T67] br2: port 1(w1) entered disabled state [ 44.423718][ T67] vx20: left allmulticast mode [ 44.423975][ T67] vx20: left promiscuous mode [ 44.424336][ T67] br2: port 3(vx20) entered disabled state [ 44.426437][ T67] vx10: left allmulticast mode [ 44.426662][ T67] vx10: left promiscuous mode [ 44.427037][ T67] br2: port 2(vx10) entered disabled state [ 44.429292][ T67] w1: left allmulticast mode [ 44.430233][ T67] w1: left promiscuous mode [ 44.430578][ T67] br2: port 1(w1) entered disabled state [ 46.966508][ T617] br1: port 4(veth2) entered disabled state [ 47.051926][ T618] veth2: left allmulticast mode [ 47.052247][ T618] veth2: left promiscuous mode [ 47.052589][ T618] br1: port 4(veth2) entered disabled state [ 47.301216][ T621] br1: port 3(veth1) entered disabled state [ 47.397550][ T622] veth1: left allmulticast mode [ 47.397833][ T622] veth1: left promiscuous mode [ 47.398160][ T622] br1: port 3(veth1) entered disabled state [ 47.551282][ T624] vx20: left allmulticast mode [ 47.551542][ T624] vx20: left promiscuous mode [ 47.551857][ T624] br1: port 2(vx20) entered disabled state [ 47.949280][ T628] vx10: left allmulticast mode [ 47.949551][ T628] vx10: left promiscuous mode [ 47.949876][ T628] br1: port 1(vx10) entered disabled state [ 48.782180][ T637] [ 48.782353][ T637] ============================================ [ 48.782590][ T637] WARNING: possible recursive locking detected [ 48.782814][ T637] 6.13.0-rc5-virtme #1 Not tainted [ 48.782993][ T637] -------------------------------------------- [ 48.783218][ T637] ip/637 is trying to acquire lock: [ 48.783401][ T637] ffffffffbd5d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 48.783778][ T637] [ 48.783778][ T637] but task is already holding lock: [ 48.784053][ T637] ffffffffbd5d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 48.784486][ T637] [ 48.784486][ T637] other info that might help us debug this: [ 48.784703][ T637] Possible unsafe locking scenario: [ 48.784703][ T637] [ 48.784922][ T637] CPU0 [ 48.785034][ T637] ---- [ 48.785144][ T637] lock((netdev_chain).rwsem); [ 48.785288][ T637] lock((netdev_chain).rwsem); [ 48.785435][ T637] [ 48.785435][ T637] *** DEADLOCK *** [ 48.785435][ T637] [ 48.785661][ T637] May be due to missing lock nesting notation [ 48.785661][ T637] [ 48.785880][ T637] 2 locks held by ip/637: [ 48.786032][ T637] #0: ffffffffbd5e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 48.786305][ T637] #1: ffffffffbd5d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 48.786606][ T637] [ 48.786606][ T637] stack backtrace: [ 48.786801][ T637] CPU: 2 UID: 0 PID: 637 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 48.787025][ T637] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 48.787212][ T637] Call Trace: [ 48.787324][ T637] [ 48.787402][ T637] dump_stack_lvl+0x82/0xd0 [ 48.787559][ T637] print_deadlock_bug+0x40a/0x650 [ 48.787714][ T637] validate_chain+0x5bf/0xae0 [ 48.787865][ T637] ? __pfx_validate_chain+0x10/0x10 [ 48.788014][ T637] ? hlock_class+0x4e/0x130 [ 48.788163][ T637] ? mark_lock+0x38/0x3e0 [ 48.788283][ T637] __lock_acquire+0xb9a/0x1680 [ 48.788464][ T637] lock_acquire.part.0+0xeb/0x330 [ 48.788651][ T637] ? blocking_notifier_call_chain+0x50/0x90 [ 48.788881][ T637] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 48.789109][ T637] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.789289][ T637] ? trace_lock_acquire+0x14c/0x1f0 [ 48.789471][ T637] ? lock_acquire+0x32/0xc0 [ 48.789662][ T637] ? blocking_notifier_call_chain+0x50/0x90 [ 48.789888][ T637] down_read+0x9f/0x340 [ 48.790027][ T637] ? blocking_notifier_call_chain+0x50/0x90 [ 48.790259][ T637] ? __pfx_down_read+0x10/0x10 [ 48.790440][ T637] ? __lock_release+0x103/0x460 [ 48.790621][ T637] ? netconsole_netdev_event+0x2c1/0x620 [ 48.790803][ T637] ? __pfx___lock_release+0x10/0x10 [ 48.790992][ T637] blocking_notifier_call_chain+0x50/0x90 [ 48.791172][ T637] __netdev_upper_dev_unlink+0xd9/0x220 [ 48.791355][ T637] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 48.791580][ T637] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 48.791763][ T637] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 48.791990][ T637] ? rtnl_is_locked+0x15/0x20 [ 48.792183][ T637] netdev_upper_dev_unlink+0x71/0xa0 [ 48.792365][ T637] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 48.792593][ T637] ? netconsole_netdev_event+0x2c1/0x620 [ 48.792776][ T637] ? mutex_is_locked+0x1c/0x60 [ 48.792958][ T637] ? rtnl_is_locked+0x15/0x20 [ 48.793139][ T637] ? netdev_master_upper_dev_get+0x13/0x120 [ 48.793366][ T637] vrf_device_event+0x78/0xe0 [vrf] [ 48.793569][ T637] notifier_call_chain+0xcd/0x150 [ 48.793755][ T637] blocking_notifier_call_chain+0x66/0x90 [ 48.793937][ T637] unregister_netdevice_many_notify+0xa7b/0x1580 [ 48.794161][ T637] ? hlock_class+0x4e/0x130 [ 48.794361][ T637] ? mark_lock+0x38/0x3e0 [ 48.794502][ T637] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 48.794729][ T637] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 48.794963][ T637] ? kfree+0xf3/0x330 [ 48.795105][ T637] ? vlan_vid_del+0x310/0x5e0 [ 48.795297][ T637] ? vlan_vid_del+0x310/0x5e0 [ 48.795481][ T637] rtnl_dellink+0x348/0xa40 [ 48.795667][ T637] ? __pfx_rtnl_dellink+0x10/0x10 [ 48.795863][ T637] ? find_held_lock+0x2c/0x110 [ 48.796046][ T637] ? __lock_release+0x103/0x460 [ 48.796227][ T637] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 48.796414][ T637] ? __pfx___lock_release+0x10/0x10 [ 48.796596][ T637] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.796780][ T637] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 48.796962][ T637] ? __pfx_rtnl_dellink+0x10/0x10 [ 48.797143][ T637] rtnetlink_rcv_msg+0x712/0xc10 [ 48.797326][ T637] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 48.797507][ T637] ? hlock_class+0x4e/0x130 [ 48.797696][ T637] ? mark_lock+0x38/0x3e0 [ 48.797835][ T637] ? __lock_acquire+0xb9a/0x1680 [ 48.798018][ T637] netlink_rcv_skb+0x130/0x360 [ 48.798200][ T637] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 48.798385][ T637] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 48.798577][ T637] ? netlink_deliver_tap+0x13e/0x340 [ 48.798760][ T637] ? netlink_deliver_tap+0xc3/0x340 [ 48.798948][ T637] netlink_unicast+0x44b/0x710 [ 48.799132][ T637] ? __pfx_netlink_unicast+0x10/0x10 [ 48.799313][ T637] ? find_held_lock+0x2c/0x110 [ 48.799495][ T637] netlink_sendmsg+0x723/0xbe0 [ 48.799675][ T637] ? __pfx_netlink_sendmsg+0x10/0x10 [ 48.799859][ T637] ____sys_sendmsg+0x7ac/0xa10 [ 48.800041][ T637] ? __pfx_____sys_sendmsg+0x10/0x10 [ 48.800227][ T637] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 48.800457][ T637] ___sys_sendmsg+0xee/0x170 [ 48.800640][ T637] ? __pfx____sys_sendmsg+0x10/0x10 [ 48.800823][ T637] ? kasan_save_stack+0x34/0x50 [ 48.801003][ T637] ? kasan_save_stack+0x24/0x50 [ 48.801185][ T637] ? __kasan_record_aux_stack+0x8e/0xa0 [ 48.801367][ T637] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 48.801600][ T637] ? __x64_sys_close+0x7c/0xd0 [ 48.801786][ T637] ? do_syscall_64+0xc1/0x1d0 [ 48.801971][ T637] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 48.802200][ T637] ? __lock_acquire+0xb9a/0x1680 [ 48.802388][ T637] ? find_held_lock+0x2c/0x110 [ 48.802568][ T637] ? __lock_release+0x103/0x460 [ 48.802748][ T637] ? __virt_addr_valid+0x22b/0x430 [ 48.802932][ T637] ? __pfx___lock_release+0x10/0x10 [ 48.803121][ T637] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.803304][ T637] __sys_sendmsg+0x109/0x1a0 [ 48.803485][ T637] ? __pfx___sys_sendmsg+0x10/0x10 [ 48.803665][ T637] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 48.803894][ T637] do_syscall_64+0xc1/0x1d0 [ 48.804170][ T637] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 48.804375][ T637] RIP: 0033:0x7f826e7669a7 [ 48.804536][ T637] 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 [ 48.805049][ T637] RSP: 002b:00007ffdf95dad78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.805272][ T637] RAX: ffffffffffffffda RBX: 00007ffdf95db4a0 RCX: 00007f826e7669a7 [ 48.805496][ T637] RDX: 0000000000000000 RSI: 00007ffdf95dade0 RDI: 0000000000000005 [ 48.805723][ T637] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 48.805941][ T637] R10: 00007f826e624ef8 R11: 0000000000000246 R12: 0000000000000002 [ 48.806171][ T637] R13: 0000000067795751 R14: 0000000000498600 R15: 0000000000000000 [ 48.806395][ T637]