[ 12.705063][ T289] 8021q: 802.1Q VLAN Support v1.8 [ 14.746687][ T313] br0: port 1(veth1) entered blocking state [ 14.747162][ T313] br0: port 1(veth1) entered disabled state [ 14.747564][ T313] veth1: entered allmulticast mode [ 14.749622][ T313] veth1: entered promiscuous mode [ 14.824266][ T315] br0: port 2(veth2) entered blocking state [ 14.824574][ T315] br0: port 2(veth2) entered disabled state [ 14.824845][ T315] veth2: entered allmulticast mode [ 14.827800][ T315] veth2: entered promiscuous mode [ 14.987415][ T40] br0: port 1(veth1) entered blocking state [ 14.987855][ T40] br0: port 1(veth1) entered forwarding state [ 15.066934][ T136] br0: port 2(veth2) entered blocking state [ 15.067214][ T136] br0: port 2(veth2) entered forwarding state [ 45.309812][ T406] br0: port 2(veth2) entered disabled state [ 45.407069][ T407] br0: port 1(veth1) entered disabled state [ 45.500440][ T408] veth2: left allmulticast mode [ 45.500678][ T408] veth2: left promiscuous mode [ 45.501020][ T408] br0: port 2(veth2) entered disabled state [ 45.504369][ T408] veth1: left allmulticast mode [ 45.504572][ T408] veth1: left promiscuous mode [ 45.504929][ T408] br0: port 1(veth1) entered disabled state [ 45.700231][ T409] [ 45.700408][ T409] ============================================ [ 45.700673][ T409] WARNING: possible recursive locking detected [ 45.700951][ T409] 6.13.0-rc5-virtme #1 Not tainted [ 45.701122][ T409] -------------------------------------------- [ 45.701375][ T409] ip/409 is trying to acquire lock: [ 45.701618][ T409] ffffffff8a7d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 45.702065][ T409] [ 45.702065][ T409] but task is already holding lock: [ 45.702456][ T409] ffffffff8a7d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 45.702844][ T409] [ 45.702844][ T409] other info that might help us debug this: [ 45.703079][ T409] Possible unsafe locking scenario: [ 45.703079][ T409] [ 45.703334][ T409] CPU0 [ 45.703456][ T409] ---- [ 45.703577][ T409] lock((netdev_chain).rwsem); [ 45.703737][ T409] lock((netdev_chain).rwsem); [ 45.703897][ T409] [ 45.703897][ T409] *** DEADLOCK *** [ 45.703897][ T409] [ 45.704131][ T409] May be due to missing lock nesting notation [ 45.704131][ T409] [ 45.704377][ T409] 2 locks held by ip/409: [ 45.704509][ T409] #0: ffffffff8a7e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 45.704810][ T409] #1: ffffffff8a7d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 45.705145][ T409] [ 45.705145][ T409] stack backtrace: [ 45.705369][ T409] CPU: 0 UID: 0 PID: 409 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 45.705623][ T409] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 45.705827][ T409] Call Trace: [ 45.705954][ T409] [ 45.706041][ T409] dump_stack_lvl+0x82/0xd0 [ 45.706218][ T409] print_deadlock_bug+0x40a/0x650 [ 45.706477][ T409] validate_chain+0x5bf/0xae0 [ 45.706687][ T409] ? __pfx_validate_chain+0x10/0x10 [ 45.706853][ T409] ? hlock_class+0x4e/0x130 [ 45.707021][ T409] ? mark_lock+0x38/0x3e0 [ 45.707145][ T409] __lock_acquire+0xb9a/0x1680 [ 45.707313][ T409] lock_acquire.part.0+0xeb/0x330 [ 45.707462][ T409] ? blocking_notifier_call_chain+0x50/0x90 [ 45.707659][ T409] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 45.707844][ T409] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.707990][ T409] ? trace_lock_acquire+0x14c/0x1f0 [ 45.708145][ T409] ? lock_acquire+0x32/0xc0 [ 45.708304][ T409] ? blocking_notifier_call_chain+0x50/0x90 [ 45.708489][ T409] down_read+0x9f/0x340 [ 45.708603][ T409] ? blocking_notifier_call_chain+0x50/0x90 [ 45.708788][ T409] ? __pfx_down_read+0x10/0x10 [ 45.708934][ T409] ? __lock_release+0x103/0x460 [ 45.709081][ T409] ? netconsole_netdev_event+0x2c1/0x620 [ 45.709246][ T409] ? __pfx___lock_release+0x10/0x10 [ 45.709397][ T409] blocking_notifier_call_chain+0x50/0x90 [ 45.709547][ T409] __netdev_upper_dev_unlink+0xd9/0x220 [ 45.709695][ T409] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 45.709878][ T409] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 45.710051][ T409] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 45.710314][ T409] ? rtnl_is_locked+0x15/0x20 [ 45.710472][ T409] netdev_upper_dev_unlink+0x71/0xa0 [ 45.710641][ T409] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 45.710860][ T409] ? netconsole_netdev_event+0x2c1/0x620 [ 45.711010][ T409] ? mutex_is_locked+0x1c/0x60 [ 45.711158][ T409] ? rtnl_is_locked+0x15/0x20 [ 45.711378][ T409] ? netdev_master_upper_dev_get+0x13/0x120 [ 45.711578][ T409] vrf_device_event+0x78/0xe0 [vrf] [ 45.711791][ T409] notifier_call_chain+0xcd/0x150 [ 45.711954][ T409] blocking_notifier_call_chain+0x66/0x90 [ 45.712135][ T409] unregister_netdevice_many_notify+0xa7b/0x1580 [ 45.712349][ T409] ? __lock_release+0x103/0x460 [ 45.712580][ T409] ? __pfx___lock_release+0x10/0x10 [ 45.712784][ T409] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 45.713074][ T409] ? hlock_class+0x4e/0x130 [ 45.713314][ T409] ? mark_held_locks+0x9e/0xe0 [ 45.713523][ T409] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 45.713673][ T409] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 45.713905][ T409] rtnl_dellink+0x348/0xa40 [ 45.714056][ T409] ? __pfx_rtnl_dellink+0x10/0x10 [ 45.714226][ T409] ? find_held_lock+0x2c/0x110 [ 45.714402][ T409] ? __lock_release+0x103/0x460 [ 45.714561][ T409] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 45.714708][ T409] ? __pfx___lock_release+0x10/0x10 [ 45.714896][ T409] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.715094][ T409] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 45.715279][ T409] ? __pfx_rtnl_dellink+0x10/0x10 [ 45.715427][ T409] rtnetlink_rcv_msg+0x712/0xc10 [ 45.715575][ T409] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 45.715759][ T409] ? hlock_class+0x4e/0x130 [ 45.715949][ T409] ? mark_lock+0x38/0x3e0 [ 45.716100][ T409] ? __lock_acquire+0xb9a/0x1680 [ 45.716307][ T409] netlink_rcv_skb+0x130/0x360 [ 45.716497][ T409] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 45.716672][ T409] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 45.716827][ T409] ? netlink_deliver_tap+0x13e/0x340 [ 45.717031][ T409] ? netlink_deliver_tap+0xc3/0x340 [ 45.717182][ T409] netlink_unicast+0x44b/0x710 [ 45.717344][ T409] ? __pfx_netlink_unicast+0x10/0x10 [ 45.717492][ T409] ? find_held_lock+0x2c/0x110 [ 45.717654][ T409] netlink_sendmsg+0x723/0xbe0 [ 45.717856][ T409] ? __pfx_netlink_sendmsg+0x10/0x10 [ 45.718050][ T409] ____sys_sendmsg+0x7ac/0xa10 [ 45.718219][ T409] ? __pfx_____sys_sendmsg+0x10/0x10 [ 45.718422][ T409] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 45.718708][ T409] ___sys_sendmsg+0xee/0x170 [ 45.718939][ T409] ? __pfx____sys_sendmsg+0x10/0x10 [ 45.719175][ T409] ? kasan_save_stack+0x34/0x50 [ 45.719418][ T409] ? kasan_save_stack+0x24/0x50 [ 45.719629][ T409] ? __kasan_record_aux_stack+0x8e/0xa0 [ 45.719783][ T409] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 45.719967][ T409] ? __x64_sys_close+0x7c/0xd0 [ 45.720154][ T409] ? do_syscall_64+0xc1/0x1d0 [ 45.720335][ T409] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 45.720518][ T409] ? __lock_acquire+0xb9a/0x1680 [ 45.720667][ T409] ? find_held_lock+0x2c/0x110 [ 45.720817][ T409] ? __lock_release+0x103/0x460 [ 45.720966][ T409] ? __virt_addr_valid+0x22b/0x430 [ 45.721177][ T409] ? __pfx___lock_release+0x10/0x10 [ 45.721343][ T409] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.721539][ T409] __sys_sendmsg+0x109/0x1a0 [ 45.721690][ T409] ? __pfx___sys_sendmsg+0x10/0x10 [ 45.721837][ T409] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 45.722078][ T409] do_syscall_64+0xc1/0x1d0 [ 45.722299][ T409] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 45.722532][ T409] RIP: 0033:0x7eff479499a7 [ 45.722741][ T409] 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 [ 45.723451][ T409] RSP: 002b:00007ffe7901d308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 45.723683][ T409] RAX: ffffffffffffffda RBX: 00007ffe7901da30 RCX: 00007eff479499a7 [ 45.723902][ T409] RDX: 0000000000000000 RSI: 00007ffe7901d370 RDI: 0000000000000005 [ 45.724120][ T409] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 45.724351][ T409] R10: 00007eff47807ef8 R11: 0000000000000246 R12: 0000000000000002 [ 45.724635][ T409] R13: 0000000067790452 R14: 0000000000498600 R15: 0000000000000000 [ 45.724859][ T409]