[ 11.192641][ T249] ip (249) used greatest stack depth: 24432 bytes left [ 14.194621][ T300] 8021q: 802.1Q VLAN Support v1.8 [ 17.567810][ T345] br1: port 1(vx10) entered blocking state [ 17.568259][ T345] br1: port 1(vx10) entered disabled state [ 17.568687][ T345] vx10: entered allmulticast mode [ 17.570799][ T345] vx10: entered promiscuous mode [ 17.571817][ T345] br1: port 1(vx10) entered blocking state [ 17.572205][ T345] br1: port 1(vx10) entered forwarding state [ 17.582226][ T345] ip (345) used greatest stack depth: 24400 bytes left [ 17.927995][ T350] br1: port 2(vx20) entered blocking state [ 17.928284][ T350] br1: port 2(vx20) entered disabled state [ 17.928673][ T350] vx20: entered allmulticast mode [ 17.930774][ T350] vx20: entered promiscuous mode [ 17.931650][ T350] br1: port 2(vx20) entered blocking state [ 17.931906][ T350] br1: port 2(vx20) entered forwarding state [ 18.092670][ T352] br1: port 3(veth1) entered blocking state [ 18.092991][ T352] br1: port 3(veth1) entered disabled state [ 18.093332][ T352] veth1: entered allmulticast mode [ 18.095284][ T352] veth1: entered promiscuous mode [ 18.167320][ T40] br1: port 3(veth1) entered blocking state [ 18.167742][ T40] br1: port 3(veth1) entered forwarding state [ 18.407646][ T357] br1: port 4(veth2) entered blocking state [ 18.407931][ T357] br1: port 4(veth2) entered disabled state [ 18.408201][ T357] veth2: entered allmulticast mode [ 18.410156][ T357] veth2: entered promiscuous mode [ 18.487762][ T39] br1: port 4(veth2) entered blocking state [ 18.488173][ T39] br1: port 4(veth2) entered forwarding state [ 20.846501][ T387] ip (387) used greatest stack depth: 24368 bytes left [ 22.009130][ T406] br2: port 1(w1) entered blocking state [ 22.009411][ T406] br2: port 1(w1) entered disabled state [ 22.009684][ T406] w1: entered allmulticast mode [ 22.012105][ T406] w1: entered promiscuous mode [ 22.725420][ T414] br2: port 2(vx10) entered blocking state [ 22.725786][ T414] br2: port 2(vx10) entered disabled state [ 22.726070][ T414] vx10: entered allmulticast mode [ 22.728065][ T414] vx10: entered promiscuous mode [ 22.728719][ T414] br2: port 2(vx10) entered blocking state [ 22.729000][ T414] br2: port 2(vx10) entered forwarding state [ 23.318345][ T421] br2: port 3(vx20) entered blocking state [ 23.318681][ T421] br2: port 3(vx20) entered disabled state [ 23.318964][ T421] vx20: entered allmulticast mode [ 23.320857][ T421] vx20: entered promiscuous mode [ 23.321370][ T421] br2: port 3(vx20) entered blocking state [ 23.321640][ T421] br2: port 3(vx20) entered forwarding state [ 24.057410][ T39] br2: port 1(w1) entered blocking state [ 24.057843][ T39] br2: port 1(w1) entered forwarding state [ 26.370235][ T461] br2: port 1(w1) entered blocking state [ 26.370604][ T461] br2: port 1(w1) entered disabled state [ 26.370853][ T461] w1: entered allmulticast mode [ 26.373154][ T461] w1: entered promiscuous mode [ 27.061260][ T469] br2: port 2(vx10) entered blocking state [ 27.061559][ T469] br2: port 2(vx10) entered disabled state [ 27.061841][ T469] vx10: entered allmulticast mode [ 27.064561][ T469] vx10: entered promiscuous mode [ 27.065485][ T469] br2: port 2(vx10) entered blocking state [ 27.065881][ T469] br2: port 2(vx10) entered forwarding state [ 27.716144][ T476] br2: port 3(vx20) entered blocking state [ 27.716892][ T476] br2: port 3(vx20) entered disabled state [ 27.717382][ T476] vx20: entered allmulticast mode [ 27.722333][ T476] vx20: entered promiscuous mode [ 27.723262][ T476] br2: port 3(vx20) entered blocking state [ 27.724009][ T476] br2: port 3(vx20) entered forwarding state [ 28.454163][ T40] br2: port 1(w1) entered blocking state [ 28.454488][ T40] br2: port 1(w1) entered forwarding state [ 44.318571][ T11] vx20: left allmulticast mode [ 44.318889][ T11] vx20: left promiscuous mode [ 44.319256][ T11] br2: port 3(vx20) entered disabled state [ 44.322576][ T11] vx10: left allmulticast mode [ 44.322808][ T11] vx10: left promiscuous mode [ 44.323123][ T11] br2: port 2(vx10) entered disabled state [ 44.326446][ T11] w1: left allmulticast mode [ 44.326673][ T11] w1: left promiscuous mode [ 44.326993][ T11] br2: port 1(w1) entered disabled state [ 44.849911][ T11] vx20: left allmulticast mode [ 44.850167][ T11] vx20: left promiscuous mode [ 44.850526][ T11] br2: port 3(vx20) entered disabled state [ 44.863031][ T11] vx10: left allmulticast mode [ 44.863315][ T11] vx10: left promiscuous mode [ 44.863683][ T11] br2: port 2(vx10) entered disabled state [ 44.866017][ T11] w1: left allmulticast mode [ 44.866305][ T11] w1: left promiscuous mode [ 44.867631][ T11] br2: port 1(w1) entered disabled state [ 47.342114][ T617] br1: port 4(veth2) entered disabled state [ 47.437488][ T618] veth2: left allmulticast mode [ 47.437836][ T618] veth2: left promiscuous mode [ 47.438337][ T618] br1: port 4(veth2) entered disabled state [ 47.680547][ T621] br1: port 3(veth1) entered disabled state [ 47.778843][ T622] veth1: left allmulticast mode [ 47.779185][ T622] veth1: left promiscuous mode [ 47.779701][ T622] br1: port 3(veth1) entered disabled state [ 47.940734][ T624] vx20: left allmulticast mode [ 47.940988][ T624] vx20: left promiscuous mode [ 47.941315][ T624] br1: port 2(vx20) entered disabled state [ 48.296243][ T628] vx10: left allmulticast mode [ 48.296539][ T628] vx10: left promiscuous mode [ 48.296878][ T628] br1: port 1(vx10) entered disabled state [ 49.169195][ T637] [ 49.169395][ T637] ============================================ [ 49.169625][ T637] WARNING: possible recursive locking detected [ 49.169837][ T637] 6.13.0-rc5-virtme #1 Not tainted [ 49.170020][ T637] -------------------------------------------- [ 49.170245][ T637] ip/637 is trying to acquire lock: [ 49.170419][ T637] ffffffffa99d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 49.170776][ T637] [ 49.170776][ T637] but task is already holding lock: [ 49.171051][ T637] ffffffffa99d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 49.171415][ T637] [ 49.171415][ T637] other info that might help us debug this: [ 49.171677][ T637] Possible unsafe locking scenario: [ 49.171677][ T637] [ 49.171934][ T637] CPU0 [ 49.172073][ T637] ---- [ 49.172208][ T637] lock((netdev_chain).rwsem); [ 49.172386][ T637] lock((netdev_chain).rwsem); [ 49.172570][ T637] [ 49.172570][ T637] *** DEADLOCK *** [ 49.172570][ T637] [ 49.172820][ T637] May be due to missing lock nesting notation [ 49.172820][ T637] [ 49.173082][ T637] 2 locks held by ip/637: [ 49.173213][ T637] #0: ffffffffa99e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 49.173536][ T637] #1: ffffffffa99d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 49.173885][ T637] [ 49.173885][ T637] stack backtrace: [ 49.174109][ T637] CPU: 3 UID: 0 PID: 637 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 49.174374][ T637] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 49.174592][ T637] Call Trace: [ 49.174725][ T637] [ 49.174820][ T637] dump_stack_lvl+0x82/0xd0 [ 49.175009][ T637] print_deadlock_bug+0x40a/0x650 [ 49.175183][ T637] validate_chain+0x5bf/0xae0 [ 49.175359][ T637] ? __pfx_validate_chain+0x10/0x10 [ 49.175539][ T637] ? hlock_class+0x4e/0x130 [ 49.175712][ T637] ? mark_lock+0x38/0x3e0 [ 49.175847][ T637] __lock_acquire+0xb9a/0x1680 [ 49.176053][ T637] lock_acquire.part.0+0xeb/0x330 [ 49.176242][ T637] ? blocking_notifier_call_chain+0x50/0x90 [ 49.176465][ T637] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 49.176684][ T637] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 49.176856][ T637] ? trace_lock_acquire+0x14c/0x1f0 [ 49.177040][ T637] ? lock_acquire+0x32/0xc0 [ 49.177217][ T637] ? blocking_notifier_call_chain+0x50/0x90 [ 49.177437][ T637] down_read+0x9f/0x340 [ 49.177568][ T637] ? blocking_notifier_call_chain+0x50/0x90 [ 49.177781][ T637] ? __pfx_down_read+0x10/0x10 [ 49.177955][ T637] ? __lock_release+0x103/0x460 [ 49.178137][ T637] ? netconsole_netdev_event+0x2c1/0x620 [ 49.178306][ T637] ? __pfx___lock_release+0x10/0x10 [ 49.178478][ T637] blocking_notifier_call_chain+0x50/0x90 [ 49.178660][ T637] __netdev_upper_dev_unlink+0xd9/0x220 [ 49.178833][ T637] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 49.179058][ T637] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 49.179236][ T637] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 49.179449][ T637] ? rtnl_is_locked+0x15/0x20 [ 49.179625][ T637] netdev_upper_dev_unlink+0x71/0xa0 [ 49.179806][ T637] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 49.180030][ T637] ? netconsole_netdev_event+0x2c1/0x620 [ 49.180206][ T637] ? mutex_is_locked+0x1c/0x60 [ 49.180377][ T637] ? rtnl_is_locked+0x15/0x20 [ 49.180549][ T637] ? netdev_master_upper_dev_get+0x13/0x120 [ 49.180767][ T637] vrf_device_event+0x78/0xe0 [vrf] [ 49.180944][ T637] notifier_call_chain+0xcd/0x150 [ 49.181136][ T637] blocking_notifier_call_chain+0x66/0x90 [ 49.181312][ T637] unregister_netdevice_many_notify+0xa7b/0x1580 [ 49.181526][ T637] ? hlock_class+0x4e/0x130 [ 49.181703][ T637] ? mark_lock+0x38/0x3e0 [ 49.181847][ T637] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 49.182073][ T637] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 49.182290][ T637] ? kfree+0xf3/0x330 [ 49.182425][ T637] ? vlan_vid_del+0x310/0x5e0 [ 49.182602][ T637] ? vlan_vid_del+0x310/0x5e0 [ 49.182787][ T637] rtnl_dellink+0x348/0xa40 [ 49.182959][ T637] ? __pfx_rtnl_dellink+0x10/0x10 [ 49.183166][ T637] ? find_held_lock+0x2c/0x110 [ 49.183346][ T637] ? __lock_release+0x103/0x460 [ 49.183520][ T637] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 49.183694][ T637] ? __pfx___lock_release+0x10/0x10 [ 49.183883][ T637] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 49.184064][ T637] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 49.184240][ T637] ? __pfx_rtnl_dellink+0x10/0x10 [ 49.184411][ T637] rtnetlink_rcv_msg+0x712/0xc10 [ 49.184585][ T637] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 49.184761][ T637] ? hlock_class+0x4e/0x130 [ 49.184936][ T637] ? mark_lock+0x38/0x3e0 [ 49.185075][ T637] ? __lock_acquire+0xb9a/0x1680 [ 49.185270][ T637] netlink_rcv_skb+0x130/0x360 [ 49.185421][ T637] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 49.185574][ T637] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 49.185739][ T637] ? netlink_deliver_tap+0x13e/0x340 [ 49.185894][ T637] ? netlink_deliver_tap+0xc3/0x340 [ 49.186045][ T637] netlink_unicast+0x44b/0x710 [ 49.186211][ T637] ? __pfx_netlink_unicast+0x10/0x10 [ 49.186366][ T637] ? find_held_lock+0x2c/0x110 [ 49.186518][ T637] netlink_sendmsg+0x723/0xbe0 [ 49.186671][ T637] ? __pfx_netlink_sendmsg+0x10/0x10 [ 49.186835][ T637] ____sys_sendmsg+0x7ac/0xa10 [ 49.186983][ T637] ? __pfx_____sys_sendmsg+0x10/0x10 [ 49.187173][ T637] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 49.187376][ T637] ___sys_sendmsg+0xee/0x170 [ 49.187603][ T637] ? __pfx____sys_sendmsg+0x10/0x10 [ 49.187831][ T637] ? kasan_save_stack+0x34/0x50 [ 49.188065][ T637] ? kasan_save_stack+0x24/0x50 [ 49.188302][ T637] ? __kasan_record_aux_stack+0x8e/0xa0 [ 49.188538][ T637] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 49.188827][ T637] ? __x64_sys_close+0x7c/0xd0 [ 49.189055][ T637] ? do_syscall_64+0xc1/0x1d0 [ 49.189273][ T637] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.189547][ T637] ? __lock_acquire+0xb9a/0x1680 [ 49.189785][ T637] ? find_held_lock+0x2c/0x110 [ 49.190007][ T637] ? __lock_release+0x103/0x460 [ 49.190222][ T637] ? __virt_addr_valid+0x22b/0x430 [ 49.190444][ T637] ? __pfx___lock_release+0x10/0x10 [ 49.190665][ T637] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 49.190897][ T637] __sys_sendmsg+0x109/0x1a0 [ 49.191126][ T637] ? __pfx___sys_sendmsg+0x10/0x10 [ 49.191355][ T637] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 49.191662][ T637] do_syscall_64+0xc1/0x1d0 [ 49.191898][ T637] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 49.192186][ T637] RIP: 0033:0x7f902a54f9a7 [ 49.192413][ 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 [ 49.193203][ T637] RSP: 002b:00007ffc18cffd88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.193532][ T637] RAX: ffffffffffffffda RBX: 00007ffc18d004b0 RCX: 00007f902a54f9a7 [ 49.193885][ T637] RDX: 0000000000000000 RSI: 00007ffc18cffdf0 RDI: 0000000000000005 [ 49.194221][ T637] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 49.194553][ T637] R10: 00007f902a40def8 R11: 0000000000000246 R12: 0000000000000002 [ 49.194883][ T637] R13: 00000000677953ed R14: 0000000000498600 R15: 0000000000000000 [ 49.195222][ T637] [ 49.218703][ T637] ip (637) used greatest stack depth: 23808 bytes left