[ 13.278089][ T290] 8021q: 802.1Q VLAN Support v1.8 [ 15.138901][ T314] br0: port 1(veth1) entered blocking state [ 15.139368][ T314] br0: port 1(veth1) entered disabled state [ 15.139939][ T314] veth1: entered allmulticast mode [ 15.148522][ T314] veth1: entered promiscuous mode [ 15.232076][ T316] br0: port 2(veth2) entered blocking state [ 15.232950][ T316] br0: port 2(veth2) entered disabled state [ 15.233247][ T316] veth2: entered allmulticast mode [ 15.235147][ T316] veth2: entered promiscuous mode [ 15.396554][ T40] br0: port 1(veth1) entered blocking state [ 15.397110][ T40] br0: port 1(veth1) entered forwarding state [ 15.475605][ T39] br0: port 2(veth2) entered blocking state [ 15.475954][ T39] br0: port 2(veth2) entered forwarding state [ 45.719253][ T409] br0: port 2(veth2) entered disabled state [ 45.804463][ T410] br0: port 1(veth1) entered disabled state [ 45.892012][ T411] veth2: left allmulticast mode [ 45.892268][ T411] veth2: left promiscuous mode [ 45.892594][ T411] br0: port 2(veth2) entered disabled state [ 45.894685][ T411] veth1: left allmulticast mode [ 45.894905][ T411] veth1: left promiscuous mode [ 45.895234][ T411] br0: port 1(veth1) entered disabled state [ 46.059727][ T412] [ 46.059956][ T412] ============================================ [ 46.060154][ T412] WARNING: possible recursive locking detected [ 46.060342][ T412] 6.13.0-rc5-virtme #1 Not tainted [ 46.060489][ T412] -------------------------------------------- [ 46.060676][ T412] ip/412 is trying to acquire lock: [ 46.060823][ T412] ffffffff8afd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 46.061124][ T412] [ 46.061124][ T412] but task is already holding lock: [ 46.061338][ T412] ffffffff8afd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 46.061627][ T412] [ 46.061627][ T412] other info that might help us debug this: [ 46.061848][ T412] Possible unsafe locking scenario: [ 46.061848][ T412] [ 46.062061][ T412] CPU0 [ 46.062171][ T412] ---- [ 46.062281][ T412] lock((netdev_chain).rwsem); [ 46.062428][ T412] lock((netdev_chain).rwsem); [ 46.062575][ T412] [ 46.062575][ T412] *** DEADLOCK *** [ 46.062575][ T412] [ 46.062789][ T412] May be due to missing lock nesting notation [ 46.062789][ T412] [ 46.063001][ T412] 2 locks held by ip/412: [ 46.063112][ T412] #0: ffffffff8afe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 46.063381][ T412] #1: ffffffff8afd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 46.063674][ T412] [ 46.063674][ T412] stack backtrace: [ 46.063864][ T412] CPU: 0 UID: 0 PID: 412 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 46.064084][ T412] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 46.064267][ T412] Call Trace: [ 46.064379][ T412] [ 46.064457][ T412] dump_stack_lvl+0x82/0xd0 [ 46.064609][ T412] print_deadlock_bug+0x40a/0x650 [ 46.064757][ T412] validate_chain+0x5bf/0xae0 [ 46.064911][ T412] ? __pfx_validate_chain+0x10/0x10 [ 46.065062][ T412] ? hlock_class+0x4e/0x130 [ 46.065207][ T412] ? mark_lock+0x38/0x3e0 [ 46.065321][ T412] __lock_acquire+0xb9a/0x1680 [ 46.065475][ T412] lock_acquire.part.0+0xeb/0x330 [ 46.065622][ T412] ? blocking_notifier_call_chain+0x50/0x90 [ 46.065807][ T412] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 46.066000][ T412] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.066148][ T412] ? trace_lock_acquire+0x14c/0x1f0 [ 46.066294][ T412] ? lock_acquire+0x32/0xc0 [ 46.066441][ T412] ? blocking_notifier_call_chain+0x50/0x90 [ 46.066628][ T412] down_read+0x9f/0x340 [ 46.066740][ T412] ? blocking_notifier_call_chain+0x50/0x90 [ 46.066922][ T412] ? __pfx_down_read+0x10/0x10 [ 46.067071][ T412] ? __lock_release+0x103/0x460 [ 46.067217][ T412] ? netconsole_netdev_event+0x2c1/0x620 [ 46.067365][ T412] ? __pfx___lock_release+0x10/0x10 [ 46.067513][ T412] blocking_notifier_call_chain+0x50/0x90 [ 46.067670][ T412] __netdev_upper_dev_unlink+0xd9/0x220 [ 46.067820][ T412] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 46.068002][ T412] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 46.068157][ T412] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 46.068341][ T412] ? rtnl_is_locked+0x15/0x20 [ 46.068489][ T412] netdev_upper_dev_unlink+0x71/0xa0 [ 46.068635][ T412] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 46.068817][ T412] ? netconsole_netdev_event+0x2c1/0x620 [ 46.068966][ T412] ? mutex_is_locked+0x1c/0x60 [ 46.069120][ T412] ? rtnl_is_locked+0x15/0x20 [ 46.069269][ T412] ? netdev_master_upper_dev_get+0x13/0x120 [ 46.069451][ T412] vrf_device_event+0x78/0xe0 [vrf] [ 46.069608][ T412] notifier_call_chain+0xcd/0x150 [ 46.069759][ T412] blocking_notifier_call_chain+0x66/0x90 [ 46.069908][ T412] unregister_netdevice_many_notify+0xa7b/0x1580 [ 46.070090][ T412] ? __lock_release+0x103/0x460 [ 46.070241][ T412] ? __pfx___lock_release+0x10/0x10 [ 46.070388][ T412] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 46.070573][ T412] ? hlock_class+0x4e/0x130 [ 46.070721][ T412] ? mark_held_locks+0x9e/0xe0 [ 46.070871][ T412] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 46.071020][ T412] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 46.071205][ T412] rtnl_dellink+0x348/0xa40 [ 46.071359][ T412] ? __pfx_rtnl_dellink+0x10/0x10 [ 46.071517][ T412] ? find_held_lock+0x2c/0x110 [ 46.071664][ T412] ? __lock_release+0x103/0x460 [ 46.071809][ T412] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 46.071957][ T412] ? __pfx___lock_release+0x10/0x10 [ 46.072103][ T412] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.072251][ T412] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 46.072403][ T412] ? __pfx_rtnl_dellink+0x10/0x10 [ 46.072551][ T412] rtnetlink_rcv_msg+0x712/0xc10 [ 46.072697][ T412] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 46.072842][ T412] ? hlock_class+0x4e/0x130 [ 46.072986][ T412] ? mark_lock+0x38/0x3e0 [ 46.073100][ T412] ? __lock_acquire+0xb9a/0x1680 [ 46.073247][ T412] netlink_rcv_skb+0x130/0x360 [ 46.073392][ T412] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 46.073542][ T412] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 46.073691][ T412] ? netlink_deliver_tap+0x13e/0x340 [ 46.073840][ T412] ? netlink_deliver_tap+0xc3/0x340 [ 46.073992][ T412] netlink_unicast+0x44b/0x710 [ 46.074139][ T412] ? __pfx_netlink_unicast+0x10/0x10 [ 46.074287][ T412] ? find_held_lock+0x2c/0x110 [ 46.074434][ T412] netlink_sendmsg+0x723/0xbe0 [ 46.074585][ T412] ? __pfx_netlink_sendmsg+0x10/0x10 [ 46.074733][ T412] ____sys_sendmsg+0x7ac/0xa10 [ 46.074884][ T412] ? __pfx_____sys_sendmsg+0x10/0x10 [ 46.075029][ T412] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 46.075214][ T412] ___sys_sendmsg+0xee/0x170 [ 46.075362][ T412] ? __pfx____sys_sendmsg+0x10/0x10 [ 46.075510][ T412] ? kasan_save_stack+0x34/0x50 [ 46.075658][ T412] ? kasan_save_stack+0x24/0x50 [ 46.075804][ T412] ? __kasan_record_aux_stack+0x8e/0xa0 [ 46.075951][ T412] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 46.076136][ T412] ? __x64_sys_close+0x7c/0xd0 [ 46.076281][ T412] ? do_syscall_64+0xc1/0x1d0 [ 46.076428][ T412] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 46.076611][ T412] ? __lock_acquire+0xb9a/0x1680 [ 46.076765][ T412] ? find_held_lock+0x2c/0x110 [ 46.076913][ T412] ? __lock_release+0x103/0x460 [ 46.077059][ T412] ? __virt_addr_valid+0x22b/0x430 [ 46.077207][ T412] ? __pfx___lock_release+0x10/0x10 [ 46.077354][ T412] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.077501][ T412] __sys_sendmsg+0x109/0x1a0 [ 46.077661][ T412] ? __pfx___sys_sendmsg+0x10/0x10 [ 46.077812][ T412] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 46.077997][ T412] do_syscall_64+0xc1/0x1d0 [ 46.078143][ T412] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 46.078321][ T412] RIP: 0033:0x7fb867a909a7 [ 46.078475][ T412] 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 [ 46.078993][ T412] RSP: 002b:00007ffd1cfb2ee8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 46.079215][ T412] RAX: ffffffffffffffda RBX: 00007ffd1cfb3610 RCX: 00007fb867a909a7 [ 46.079434][ T412] RDX: 0000000000000000 RSI: 00007ffd1cfb2f50 RDI: 0000000000000005 [ 46.079656][ T412] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 46.079879][ T412] R10: 00007fb86794eef8 R11: 0000000000000246 R12: 0000000000000002 [ 46.080097][ T412] R13: 000000006779579b R14: 0000000000498600 R15: 0000000000000000 [ 46.080321][ T412] [ 46.099568][ T412] ip (412) used greatest stack depth: 23632 bytes left