[ 13.872787][ T301] 8021q: 802.1Q VLAN Support v1.8 [ 16.929373][ T344] br1: port 1(vx100) entered blocking state [ 16.930363][ T344] br1: port 1(vx100) entered disabled state [ 16.931078][ T344] vx100: entered allmulticast mode [ 16.933084][ T344] vx100: entered promiscuous mode [ 16.934137][ T344] br1: port 1(vx100) entered blocking state [ 16.934484][ T344] br1: port 1(vx100) entered forwarding state [ 17.129047][ T346] br1: port 2(veth1) entered blocking state [ 17.129356][ T346] br1: port 2(veth1) entered disabled state [ 17.129682][ T346] veth1: entered allmulticast mode [ 17.132788][ T346] veth1: entered promiscuous mode [ 17.230978][ T39] br1: port 2(veth1) entered blocking state [ 17.231452][ T39] br1: port 2(veth1) entered forwarding state [ 17.624011][ T352] br2: port 1(vx200) entered blocking state [ 17.624329][ T352] br2: port 1(vx200) entered disabled state [ 17.624647][ T352] vx200: entered allmulticast mode [ 17.626672][ T352] vx200: entered promiscuous mode [ 17.627847][ T352] br2: port 1(vx200) entered blocking state [ 17.628203][ T352] br2: port 1(vx200) entered forwarding state [ 17.904211][ T355] br2: port 2(veth2.20) entered blocking state [ 17.904551][ T355] br2: port 2(veth2.20) entered disabled state [ 17.904875][ T355] veth2.20: entered allmulticast mode [ 17.906902][ T355] veth2.20: entered promiscuous mode [ 17.980611][ T357] veth2: entered allmulticast mode [ 17.980874][ T357] veth2: entered promiscuous mode [ 17.982483][ T357] br2: port 2(veth2.20) entered blocking state [ 17.982936][ T357] br2: port 2(veth2.20) entered forwarding state [ 21.187823][ T402] br3: port 1(w1) entered blocking state [ 21.188092][ T402] br3: port 1(w1) entered disabled state [ 21.188358][ T402] w1: entered allmulticast mode [ 21.190470][ T402] w1: entered promiscuous mode [ 21.712230][ T408] br3: port 2(vx100) entered blocking state [ 21.712712][ T408] br3: port 2(vx100) entered disabled state [ 21.713157][ T408] vx100: entered allmulticast mode [ 21.717294][ T408] vx100: entered promiscuous mode [ 21.718766][ T408] br3: port 2(vx100) entered blocking state [ 21.719186][ T408] br3: port 2(vx100) entered forwarding state [ 22.332497][ T69] br3: port 1(w1) entered blocking state [ 22.332943][ T69] br3: port 1(w1) entered forwarding state [ 24.849365][ T456] br3: port 1(w1) entered blocking state [ 24.849676][ T456] br3: port 1(w1) entered disabled state [ 24.849921][ T456] w1: entered allmulticast mode [ 24.852326][ T456] w1: entered promiscuous mode [ 25.347450][ T462] br3: port 2(vx200) entered blocking state [ 25.347787][ T462] br3: port 2(vx200) entered disabled state [ 25.348089][ T462] vx200: entered allmulticast mode [ 25.350136][ T462] vx200: entered promiscuous mode [ 25.351168][ T462] br3: port 2(vx200) entered blocking state [ 25.351445][ T462] br3: port 2(vx200) entered forwarding state [ 26.008674][ T69] br3: port 1(w1) entered blocking state [ 26.008961][ T69] br3: port 1(w1) entered forwarding state [ 27.769401][ T501] br3: port 3(w1.20) entered blocking state [ 27.769765][ T501] br3: port 3(w1.20) entered disabled state [ 27.770065][ T501] w1.20: entered allmulticast mode [ 27.772499][ T501] w1.20: entered promiscuous mode [ 28.445475][ T514] br3: port 3(w1.20) entered blocking state [ 28.446249][ T514] br3: port 3(w1.20) entered forwarding state [ 38.642506][ T11] w1.20: left allmulticast mode [ 38.642849][ T11] w1.20: left promiscuous mode [ 38.643478][ T11] br3: port 3(w1.20) entered disabled state [ 38.646686][ T11] vx200: left allmulticast mode [ 38.646916][ T11] vx200: left promiscuous mode [ 38.647308][ T11] br3: port 2(vx200) entered disabled state [ 38.648661][ T11] w1: left allmulticast mode [ 38.648867][ T11] w1: left promiscuous mode [ 38.649176][ T11] br3: port 1(w1) entered disabled state [ 39.185304][ T11] vx100: left allmulticast mode [ 39.185552][ T11] vx100: left promiscuous mode [ 39.185882][ T11] br3: port 2(vx100) entered disabled state [ 39.188352][ T11] w1: left allmulticast mode [ 39.189477][ T11] w1: left promiscuous mode [ 39.189993][ T11] br3: port 1(w1) entered disabled state [ 41.212952][ T612] vx200: left allmulticast mode [ 41.213211][ T612] vx200: left promiscuous mode [ 41.213583][ T612] br2: port 1(vx200) entered disabled state [ 41.505277][ T615] veth2: left allmulticast mode [ 41.505552][ T615] veth2: left promiscuous mode [ 41.508093][ T615] br2: port 2(veth2.20) entered disabled state [ 41.540319][ T615] veth2.20 (unregistering): left allmulticast mode [ 41.540928][ T615] veth2.20 (unregistering): left promiscuous mode [ 41.541187][ T615] br2: port 2(veth2.20) entered disabled state [ 41.542153][ T615] [ 41.542247][ T615] ============================================ [ 41.542443][ T615] WARNING: possible recursive locking detected [ 41.542638][ T615] 6.13.0-rc5-virtme #1 Not tainted [ 41.542794][ T615] -------------------------------------------- [ 41.542999][ T615] ip/615 is trying to acquire lock: [ 41.543153][ T615] ffffffffa25d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 41.543487][ T615] [ 41.543487][ T615] but task is already holding lock: [ 41.543717][ T615] ffffffffa25d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 41.544035][ T615] [ 41.544035][ T615] other info that might help us debug this: [ 41.544266][ T615] Possible unsafe locking scenario: [ 41.544266][ T615] [ 41.544497][ T615] CPU0 [ 41.544617][ T615] ---- [ 41.544733][ T615] lock((netdev_chain).rwsem); [ 41.544896][ T615] lock((netdev_chain).rwsem); [ 41.545053][ T615] [ 41.545053][ T615] *** DEADLOCK *** [ 41.545053][ T615] [ 41.545289][ T615] May be due to missing lock nesting notation [ 41.545289][ T615] [ 41.545520][ T615] 2 locks held by ip/615: [ 41.545640][ T615] #0: ffffffffa25e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 41.545927][ T615] #1: ffffffffa25d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 41.546245][ T615] [ 41.546245][ T615] stack backtrace: [ 41.546436][ T615] CPU: 0 UID: 0 PID: 615 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 41.546688][ T615] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 41.546894][ T615] Call Trace: [ 41.547015][ T615] [ 41.547097][ T615] dump_stack_lvl+0x82/0xd0 [ 41.547262][ T615] print_deadlock_bug+0x40a/0x650 [ 41.547422][ T615] validate_chain+0x5bf/0xae0 [ 41.547597][ T615] ? __pfx_validate_chain+0x10/0x10 [ 41.547759][ T615] ? hlock_class+0x4e/0x130 [ 41.547924][ T615] ? mark_lock+0x38/0x3e0 [ 41.548044][ T615] __lock_acquire+0xb9a/0x1680 [ 41.548202][ T615] ? hlock_class+0x4e/0x130 [ 41.548361][ T615] lock_acquire.part.0+0xeb/0x330 [ 41.548516][ T615] ? blocking_notifier_call_chain+0x50/0x90 [ 41.548709][ T615] ? validate_chain+0x5a7/0xae0 [ 41.548865][ T615] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.549021][ T615] ? trace_lock_acquire+0x14c/0x1f0 [ 41.549176][ T615] ? lock_acquire+0x32/0xc0 [ 41.549333][ T615] ? blocking_notifier_call_chain+0x50/0x90 [ 41.549534][ T615] down_read+0x9f/0x340 [ 41.549653][ T615] ? blocking_notifier_call_chain+0x50/0x90 [ 41.549842][ T615] ? __pfx_down_read+0x10/0x10 [ 41.549999][ T615] ? __lock_acquire+0xb9a/0x1680 [ 41.550153][ T615] blocking_notifier_call_chain+0x50/0x90 [ 41.550309][ T615] __netdev_upper_dev_unlink+0xd9/0x220 [ 41.550466][ T615] ? br_fdb_delete_by_port+0x36/0x260 [bridge] [ 41.550701][ T615] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 41.550895][ T615] ? find_held_lock+0x2c/0x110 [ 41.551052][ T615] ? del_nbp+0x377/0xbe0 [bridge] [ 41.551248][ T615] ? hlock_class+0x4e/0x130 [ 41.551403][ T615] netdev_upper_dev_unlink+0x71/0xa0 [ 41.551556][ T615] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 41.551748][ T615] ? mutex_spin_on_owner+0x1f2/0x2b0 [ 41.551906][ T615] ? rtnl_is_locked+0x15/0x20 [ 41.552063][ T615] del_nbp+0x602/0xbe0 [bridge] [ 41.552257][ T615] br_del_if+0xa3/0x1f0 [bridge] [ 41.552449][ T615] br_device_event+0x53d/0x800 [bridge] [ 41.552640][ T615] ? __pfx_br_device_event+0x10/0x10 [bridge] [ 41.552866][ T615] ? netconsole_netdev_event+0x2c1/0x620 [ 41.553026][ T615] ? packet_notifier+0x3b0/0x810 [ 41.553189][ T615] notifier_call_chain+0xcd/0x150 [ 41.553347][ T615] blocking_notifier_call_chain+0x66/0x90 [ 41.553501][ T615] unregister_netdevice_many_notify+0xa7b/0x1580 [ 41.553696][ T615] ? __lock_release+0x103/0x460 [ 41.553853][ T615] ? __pfx___lock_release+0x10/0x10 [ 41.554010][ T615] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 41.554202][ T615] ? hlock_class+0x4e/0x130 [ 41.554360][ T615] ? mark_held_locks+0x9e/0xe0 [ 41.554516][ T615] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 41.554671][ T615] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 41.554869][ T615] rtnl_dellink+0x348/0xa40 [ 41.555028][ T615] ? __pfx_rtnl_dellink+0x10/0x10 [ 41.555204][ T615] ? find_held_lock+0x2c/0x110 [ 41.555363][ T615] ? __lock_release+0x103/0x460 [ 41.555518][ T615] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 41.555675][ T615] ? __pfx___lock_release+0x10/0x10 [ 41.555829][ T615] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.555987][ T615] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 41.556143][ T615] ? __pfx_rtnl_dellink+0x10/0x10 [ 41.556299][ T615] rtnetlink_rcv_msg+0x712/0xc10 [ 41.556455][ T615] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 41.556611][ T615] ? hlock_class+0x4e/0x130 [ 41.556768][ T615] ? mark_lock+0x38/0x3e0 [ 41.556887][ T615] ? __lock_acquire+0xb9a/0x1680 [ 41.557044][ T615] netlink_rcv_skb+0x130/0x360 [ 41.557204][ T615] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 41.557360][ T615] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 41.557520][ T615] ? netlink_deliver_tap+0x13e/0x340 [ 41.557677][ T615] ? netlink_deliver_tap+0xc3/0x340 [ 41.557833][ T615] netlink_unicast+0x44b/0x710 [ 41.557987][ T615] ? __pfx_netlink_unicast+0x10/0x10 [ 41.558150][ T615] ? find_held_lock+0x2c/0x110 [ 41.558307][ T615] netlink_sendmsg+0x723/0xbe0 [ 41.558464][ T615] ? __pfx_netlink_sendmsg+0x10/0x10 [ 41.558623][ T615] ____sys_sendmsg+0x7ac/0xa10 [ 41.558780][ T615] ? __pfx_____sys_sendmsg+0x10/0x10 [ 41.558937][ T615] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 41.559135][ T615] ___sys_sendmsg+0xee/0x170 [ 41.559291][ T615] ? __pfx____sys_sendmsg+0x10/0x10 [ 41.559461][ T615] ? kasan_save_stack+0x34/0x50 [ 41.559632][ T615] ? kasan_save_stack+0x24/0x50 [ 41.559784][ T615] ? __kasan_record_aux_stack+0x8e/0xa0 [ 41.559942][ T615] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 41.560137][ T615] ? __x64_sys_close+0x7c/0xd0 [ 41.560297][ T615] ? do_syscall_64+0xc1/0x1d0 [ 41.560453][ T615] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 41.560652][ T615] ? __lock_acquire+0xb9a/0x1680 [ 41.560815][ T615] ? find_held_lock+0x2c/0x110 [ 41.560971][ T615] ? __lock_release+0x103/0x460 [ 41.561125][ T615] ? __virt_addr_valid+0x22b/0x430 [ 41.561280][ T615] ? __pfx___lock_release+0x10/0x10 [ 41.561436][ T615] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.561592][ T615] __sys_sendmsg+0x109/0x1a0 [ 41.561751][ T615] ? __pfx___sys_sendmsg+0x10/0x10 [ 41.561906][ T615] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 41.562108][ T615] do_syscall_64+0xc1/0x1d0 [ 41.562264][ T615] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 41.562466][ T615] RIP: 0033:0x7f7a48c5e9a7 [ 41.562639][ T615] 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 [ 41.563195][ T615] RSP: 002b:00007ffe791cb408 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 41.563434][ T615] RAX: ffffffffffffffda RBX: 00007ffe791cbb30 RCX: 00007f7a48c5e9a7 [ 41.563671][ T615] RDX: 0000000000000000 RSI: 00007ffe791cb470 RDI: 0000000000000005 [ 41.563912][ T615] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 41.564148][ T615] R10: 00007f7a48b1cef8 R11: 0000000000000246 R12: 0000000000000002 [ 41.564383][ T615] R13: 00000000677957a0 R14: 0000000000498600 R15: 0000000000000000 [ 41.564624][ T615] [ 41.588801][ T615] ip (615) used greatest stack depth: 23456 bytes left [ 41.849680][ T619] br1: port 2(veth1) entered disabled state [ 41.914808][ T620] veth1: left allmulticast mode [ 41.915052][ T620] veth1: left promiscuous mode [ 41.915335][ T620] br1: port 2(veth1) entered disabled state [ 41.975699][ T621] vx100: left allmulticast mode [ 41.975966][ T621] vx100: left promiscuous mode [ 41.976267][ T621] br1: port 1(vx100) entered disabled state