[ 12.976729][ T287] 8021q: 802.1Q VLAN Support v1.8 [ 16.190901][ T330] br1: port 1(veth1.100) entered blocking state [ 16.192067][ T330] br1: port 1(veth1.100) entered disabled state [ 16.192510][ T330] veth1.100: entered allmulticast mode [ 16.192710][ T330] veth1: entered allmulticast mode [ 16.194790][ T330] veth1.100: entered promiscuous mode [ 16.195006][ T330] veth1: entered promiscuous mode [ 16.450708][ T333] br1: port 1(veth1.100) entered blocking state [ 16.451212][ T333] br1: port 1(veth1.100) entered forwarding state [ 17.026179][ T343] br2: port 1(veth1.200) entered blocking state [ 17.026538][ T343] br2: port 1(veth1.200) entered disabled state [ 17.026818][ T343] veth1.200: entered allmulticast mode [ 17.028781][ T343] veth1.200: entered promiscuous mode [ 17.275855][ T346] br2: port 1(veth1.200) entered blocking state [ 17.276206][ T346] br2: port 1(veth1.200) entered forwarding state [ 28.655250][ T408] veth1.100: left allmulticast mode [ 28.655546][ T408] veth1.100: left promiscuous mode [ 28.656084][ T408] br1: port 1(veth1.100) entered disabled state [ 28.735543][ T409] veth1.200: left allmulticast mode [ 28.735794][ T409] veth1: left allmulticast mode [ 28.736003][ T409] veth1.200: left promiscuous mode [ 28.736583][ T409] veth1: left promiscuous mode [ 28.737077][ T409] br2: port 1(veth1.200) entered disabled state [ 30.877207][ T411] br2: port 1(veth1.200) entered blocking state [ 30.877564][ T411] br2: port 1(veth1.200) entered disabled state [ 30.877836][ T411] veth1.200: entered allmulticast mode [ 30.878005][ T411] veth1: entered allmulticast mode [ 30.880659][ T411] veth1.200: entered promiscuous mode [ 30.880847][ T411] veth1: entered promiscuous mode [ 30.881842][ T411] br2: port 1(veth1.200) entered blocking state [ 30.882091][ T411] br2: port 1(veth1.200) entered forwarding state [ 30.967105][ T412] br1: port 1(veth1.100) entered blocking state [ 30.967430][ T412] br1: port 1(veth1.100) entered disabled state [ 30.967723][ T412] veth1.100: entered allmulticast mode [ 30.969676][ T412] veth1.100: entered promiscuous mode [ 30.971015][ T412] br1: port 1(veth1.100) entered blocking state [ 30.971290][ T412] br1: port 1(veth1.100) entered forwarding state [ 36.785530][ T464] veth1.200: left allmulticast mode [ 36.785791][ T464] veth1.200: left promiscuous mode [ 36.786344][ T464] br2: port 1(veth1.200) entered disabled state [ 37.315479][ T471] veth1.100: left allmulticast mode [ 37.315733][ T471] veth1: left allmulticast mode [ 37.315935][ T471] veth1.100: left promiscuous mode [ 37.316125][ T471] veth1: left promiscuous mode [ 37.317129][ T471] br1: port 1(veth1.100) entered disabled state [ 39.262939][ T492] [ 39.263123][ T492] ============================================ [ 39.263368][ T492] WARNING: possible recursive locking detected [ 39.263607][ T492] 6.13.0-rc5-virtme #1 Not tainted [ 39.263790][ T492] -------------------------------------------- [ 39.264022][ T492] ip/492 is trying to acquire lock: [ 39.264212][ T492] ffffffff9f3d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 39.264596][ T492] [ 39.264596][ T492] but task is already holding lock: [ 39.264864][ T492] ffffffff9f3d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 39.265240][ T492] [ 39.265240][ T492] other info that might help us debug this: [ 39.265521][ T492] Possible unsafe locking scenario: [ 39.265521][ T492] [ 39.265789][ T492] CPU0 [ 39.265928][ T492] ---- [ 39.266069][ T492] lock((netdev_chain).rwsem); [ 39.266257][ T492] lock((netdev_chain).rwsem); [ 39.266445][ T492] [ 39.266445][ T492] *** DEADLOCK *** [ 39.266445][ T492] [ 39.266714][ T492] May be due to missing lock nesting notation [ 39.266714][ T492] [ 39.266986][ T492] 2 locks held by ip/492: [ 39.267127][ T492] #0: ffffffff9f3e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 39.267469][ T492] #1: ffffffff9f3d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 39.267844][ T492] [ 39.267844][ T492] stack backtrace: [ 39.268077][ T492] CPU: 0 UID: 0 PID: 492 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 39.268359][ T492] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 39.268591][ T492] Call Trace: [ 39.268735][ T492] [ 39.268834][ T492] dump_stack_lvl+0x82/0xd0 [ 39.269028][ T492] print_deadlock_bug+0x40a/0x650 [ 39.269215][ T492] validate_chain+0x5bf/0xae0 [ 39.269400][ T492] ? __pfx_validate_chain+0x10/0x10 [ 39.269593][ T492] ? hlock_class+0x4e/0x130 [ 39.269776][ T492] ? mark_lock+0x38/0x3e0 [ 39.269920][ T492] __lock_acquire+0xb9a/0x1680 [ 39.270112][ T492] lock_acquire.part.0+0xeb/0x330 [ 39.270300][ T492] ? blocking_notifier_call_chain+0x50/0x90 [ 39.270532][ T492] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 39.270768][ T492] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.270953][ T492] ? trace_lock_acquire+0x14c/0x1f0 [ 39.271139][ T492] ? lock_acquire+0x32/0xc0 [ 39.271328][ T492] ? blocking_notifier_call_chain+0x50/0x90 [ 39.271569][ T492] down_read+0x9f/0x340 [ 39.271713][ T492] ? blocking_notifier_call_chain+0x50/0x90 [ 39.271944][ T492] ? __pfx_down_read+0x10/0x10 [ 39.272127][ T492] ? __lock_release+0x103/0x460 [ 39.272311][ T492] ? netconsole_netdev_event+0x2c1/0x620 [ 39.272498][ T492] ? __pfx___lock_release+0x10/0x10 [ 39.272684][ T492] blocking_notifier_call_chain+0x50/0x90 [ 39.272876][ T492] __netdev_upper_dev_unlink+0xd9/0x220 [ 39.273063][ T492] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 39.273293][ T492] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 39.273479][ T492] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 39.273707][ T492] ? rtnl_is_locked+0x15/0x20 [ 39.273895][ T492] netdev_upper_dev_unlink+0x71/0xa0 [ 39.274081][ T492] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 39.274312][ T492] ? netconsole_netdev_event+0x2c1/0x620 [ 39.274497][ T492] ? mutex_is_locked+0x1c/0x60 [ 39.274682][ T492] ? rtnl_is_locked+0x15/0x20 [ 39.274866][ T492] ? netdev_master_upper_dev_get+0x13/0x120 [ 39.275095][ T492] vrf_device_event+0x78/0xe0 [vrf] [ 39.275285][ T492] notifier_call_chain+0xcd/0x150 [ 39.275472][ T492] blocking_notifier_call_chain+0x66/0x90 [ 39.275677][ T492] unregister_netdevice_many_notify+0xa7b/0x1580 [ 39.275907][ T492] ? hlock_class+0x4e/0x130 [ 39.276089][ T492] ? mark_lock+0x38/0x3e0 [ 39.276230][ T492] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 39.276460][ T492] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 39.276691][ T492] ? kfree+0xf3/0x330 [ 39.276840][ T492] ? vlan_vid_del+0x310/0x5e0 [ 39.277031][ T492] ? vlan_vid_del+0x310/0x5e0 [ 39.277217][ T492] rtnl_dellink+0x348/0xa40 [ 39.277404][ T492] ? __pfx_rtnl_dellink+0x10/0x10 [ 39.277605][ T492] ? find_held_lock+0x2c/0x110 [ 39.277795][ T492] ? __lock_release+0x103/0x460 [ 39.277978][ T492] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 39.278163][ T492] ? __pfx___lock_release+0x10/0x10 [ 39.278353][ T492] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.278540][ T492] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 39.278723][ T492] ? __pfx_rtnl_dellink+0x10/0x10 [ 39.278912][ T492] rtnetlink_rcv_msg+0x712/0xc10 [ 39.279095][ T492] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 39.279281][ T492] ? hlock_class+0x4e/0x130 [ 39.279463][ T492] ? mark_lock+0x38/0x3e0 [ 39.279609][ T492] ? __lock_acquire+0xb9a/0x1680 [ 39.279796][ T492] netlink_rcv_skb+0x130/0x360 [ 39.279982][ T492] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 39.280167][ T492] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 39.280353][ T492] ? netlink_deliver_tap+0x13e/0x340 [ 39.280540][ T492] ? netlink_deliver_tap+0xc3/0x340 [ 39.280725][ T492] netlink_unicast+0x44b/0x710 [ 39.280914][ T492] ? __pfx_netlink_unicast+0x10/0x10 [ 39.281099][ T492] ? find_held_lock+0x2c/0x110 [ 39.281285][ T492] netlink_sendmsg+0x723/0xbe0 [ 39.281469][ T492] ? __pfx_netlink_sendmsg+0x10/0x10 [ 39.281654][ T492] ____sys_sendmsg+0x7ac/0xa10 [ 39.281839][ T492] ? __pfx_____sys_sendmsg+0x10/0x10 [ 39.282022][ T492] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 39.282258][ T492] ___sys_sendmsg+0xee/0x170 [ 39.282443][ T492] ? __pfx____sys_sendmsg+0x10/0x10 [ 39.282628][ T492] ? kasan_save_stack+0x34/0x50 [ 39.282812][ T492] ? kasan_save_stack+0x24/0x50 [ 39.282997][ T492] ? __kasan_record_aux_stack+0x8e/0xa0 [ 39.283182][ T492] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 39.283411][ T492] ? __x64_sys_close+0x7c/0xd0 [ 39.283596][ T492] ? do_syscall_64+0xc1/0x1d0 [ 39.283789][ T492] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 39.284020][ T492] ? __lock_acquire+0xb9a/0x1680 [ 39.284207][ T492] ? find_held_lock+0x2c/0x110 [ 39.284392][ T492] ? __lock_release+0x103/0x460 [ 39.284576][ T492] ? __virt_addr_valid+0x22b/0x430 [ 39.284762][ T492] ? __pfx___lock_release+0x10/0x10 [ 39.284946][ T492] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.285140][ T492] __sys_sendmsg+0x109/0x1a0 [ 39.285328][ T492] ? __pfx___sys_sendmsg+0x10/0x10 [ 39.285520][ T492] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 39.285764][ T492] do_syscall_64+0xc1/0x1d0 [ 39.285950][ T492] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 39.286181][ T492] RIP: 0033:0x7f64ec9609a7 [ 39.286378][ T492] 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 [ 39.287036][ T492] RSP: 002b:00007ffd247665f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 39.287318][ T492] RAX: ffffffffffffffda RBX: 00007ffd24766d20 RCX: 00007f64ec9609a7 [ 39.287598][ T492] RDX: 0000000000000000 RSI: 00007ffd24766660 RDI: 0000000000000005 [ 39.287879][ T492] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 39.288156][ T492] R10: 00007f64ec81eef8 R11: 0000000000000246 R12: 0000000000000002 [ 39.288439][ T492] R13: 0000000067792f3d R14: 0000000000498600 R15: 0000000000000000 [ 39.288719][ T492]