[ 58.160162][ T843] 8021q: 802.1Q VLAN Support v1.8 [ 60.888099][ T877] br1: port 1(veth1) entered blocking state [ 60.889627][ T877] br1: port 1(veth1) entered disabled state [ 60.889968][ T877] veth1: entered allmulticast mode [ 60.892101][ T877] veth1: entered promiscuous mode [ 60.982901][ T40] br1: port 1(veth1) entered blocking state [ 60.983204][ T40] br1: port 1(veth1) entered forwarding state [ 92.252706][ T1057] br1: port 1(veth1) entered disabled state [ 92.345400][ T1058] veth1: left allmulticast mode [ 92.345701][ T1058] veth1: left promiscuous mode [ 92.346062][ T1058] br1: port 1(veth1) entered disabled state [ 94.047626][ T1077] [ 94.047844][ T1077] ============================================ [ 94.048052][ T1077] WARNING: possible recursive locking detected [ 94.048248][ T1077] 6.13.0-rc5-virtme #1 Not tainted [ 94.048409][ T1077] -------------------------------------------- [ 94.048611][ T1077] ip/1077 is trying to acquire lock: [ 94.048762][ T1077] ffffffffb8bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 94.049100][ T1077] [ 94.049100][ T1077] but task is already holding lock: [ 94.049322][ T1077] ffffffffb8bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 94.049632][ T1077] [ 94.049632][ T1077] other info that might help us debug this: [ 94.049867][ T1077] Possible unsafe locking scenario: [ 94.049867][ T1077] [ 94.050102][ T1077] CPU0 [ 94.050221][ T1077] ---- [ 94.050336][ T1077] lock((netdev_chain).rwsem); [ 94.050488][ T1077] lock((netdev_chain).rwsem); [ 94.050640][ T1077] [ 94.050640][ T1077] *** DEADLOCK *** [ 94.050640][ T1077] [ 94.050862][ T1077] May be due to missing lock nesting notation [ 94.050862][ T1077] [ 94.051087][ T1077] 2 locks held by ip/1077: [ 94.051236][ T1077] #0: ffffffffb8be7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 94.051511][ T1077] #1: ffffffffb8bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 94.051821][ T1077] [ 94.051821][ T1077] stack backtrace: [ 94.052005][ T1077] CPU: 0 UID: 0 PID: 1077 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 94.052244][ T1077] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 94.052432][ T1077] Call Trace: [ 94.052548][ T1077] [ 94.052628][ T1077] dump_stack_lvl+0x82/0xd0 [ 94.052822][ T1077] print_deadlock_bug+0x40a/0x650 [ 94.052984][ T1077] validate_chain+0x5bf/0xae0 [ 94.053134][ T1077] ? __pfx_validate_chain+0x10/0x10 [ 94.053300][ T1077] ? hlock_class+0x4e/0x130 [ 94.053474][ T1077] ? mark_lock+0x38/0x3e0 [ 94.053598][ T1077] __lock_acquire+0xb9a/0x1680 [ 94.053766][ T1077] lock_acquire.part.0+0xeb/0x330 [ 94.053917][ T1077] ? blocking_notifier_call_chain+0x50/0x90 [ 94.054107][ T1077] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 94.054298][ T1077] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 94.054450][ T1077] ? trace_lock_acquire+0x14c/0x1f0 [ 94.054598][ T1077] ? lock_acquire+0x32/0xc0 [ 94.054749][ T1077] ? blocking_notifier_call_chain+0x50/0x90 [ 94.054961][ T1077] down_read+0x9f/0x340 [ 94.055078][ T1077] ? blocking_notifier_call_chain+0x50/0x90 [ 94.055297][ T1077] ? __pfx_down_read+0x10/0x10 [ 94.055446][ T1077] ? __lock_release+0x103/0x460 [ 94.055594][ T1077] ? netconsole_netdev_event+0x2c1/0x620 [ 94.055743][ T1077] ? __pfx___lock_release+0x10/0x10 [ 94.055909][ T1077] blocking_notifier_call_chain+0x50/0x90 [ 94.056064][ T1077] __netdev_upper_dev_unlink+0xd9/0x220 [ 94.056216][ T1077] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 94.056427][ T1077] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 94.056581][ T1077] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 94.056786][ T1077] ? rtnl_is_locked+0x15/0x20 [ 94.056953][ T1077] netdev_upper_dev_unlink+0x71/0xa0 [ 94.057128][ T1077] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 94.057353][ T1077] ? netconsole_netdev_event+0x2c1/0x620 [ 94.057520][ T1077] ? mutex_is_locked+0x1c/0x60 [ 94.057686][ T1077] ? rtnl_is_locked+0x15/0x20 [ 94.057850][ T1077] ? netdev_master_upper_dev_get+0x13/0x120 [ 94.058042][ T1077] vrf_device_event+0x78/0xe0 [vrf] [ 94.058209][ T1077] notifier_call_chain+0xcd/0x150 [ 94.058373][ T1077] blocking_notifier_call_chain+0x66/0x90 [ 94.058522][ T1077] unregister_netdevice_many_notify+0xa7b/0x1580 [ 94.058712][ T1077] ? hlock_class+0x4e/0x130 [ 94.058873][ T1077] ? mark_lock+0x38/0x3e0 [ 94.058992][ T1077] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 94.059177][ T1077] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 94.059364][ T1077] ? kfree+0xf3/0x330 [ 94.059491][ T1077] ? vlan_vid_del+0x310/0x5e0 [ 94.059645][ T1077] ? vlan_vid_del+0x310/0x5e0 [ 94.059803][ T1077] rtnl_dellink+0x348/0xa40 [ 94.059973][ T1077] ? __pfx_rtnl_dellink+0x10/0x10 [ 94.060148][ T1077] ? find_held_lock+0x2c/0x110 [ 94.060308][ T1077] ? __lock_release+0x103/0x460 [ 94.060458][ T1077] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 94.060625][ T1077] ? __pfx___lock_release+0x10/0x10 [ 94.060775][ T1077] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 94.060931][ T1077] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 94.061086][ T1077] ? __pfx_rtnl_dellink+0x10/0x10 [ 94.061250][ T1077] rtnetlink_rcv_msg+0x712/0xc10 [ 94.061407][ T1077] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 94.061571][ T1077] ? hlock_class+0x4e/0x130 [ 94.061716][ T1077] ? mark_lock+0x38/0x3e0 [ 94.061831][ T1077] ? __lock_acquire+0xb9a/0x1680 [ 94.061992][ T1077] netlink_rcv_skb+0x130/0x360 [ 94.062161][ T1077] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 94.062326][ T1077] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 94.062488][ T1077] ? netlink_deliver_tap+0x13e/0x340 [ 94.062650][ T1077] ? netlink_deliver_tap+0xc3/0x340 [ 94.062801][ T1077] netlink_unicast+0x44b/0x710 [ 94.062962][ T1077] ? __pfx_netlink_unicast+0x10/0x10 [ 94.063124][ T1077] ? find_held_lock+0x2c/0x110 [ 94.063288][ T1077] netlink_sendmsg+0x723/0xbe0 [ 94.063451][ T1077] ? __pfx_netlink_sendmsg+0x10/0x10 [ 94.063617][ T1077] ____sys_sendmsg+0x7ac/0xa10 [ 94.063778][ T1077] ? __pfx_____sys_sendmsg+0x10/0x10 [ 94.063932][ T1077] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 94.064123][ T1077] ___sys_sendmsg+0xee/0x170 [ 94.064285][ T1077] ? __pfx____sys_sendmsg+0x10/0x10 [ 94.064455][ T1077] ? kasan_save_stack+0x34/0x50 [ 94.064607][ T1077] ? kasan_save_stack+0x24/0x50 [ 94.064770][ T1077] ? __kasan_record_aux_stack+0x8e/0xa0 [ 94.064928][ T1077] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 94.065136][ T1077] ? __x64_sys_close+0x7c/0xd0 [ 94.065298][ T1077] ? do_syscall_64+0xc1/0x1d0 [ 94.065462][ T1077] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.065667][ T1077] ? __lock_acquire+0xb9a/0x1680 [ 94.065832][ T1077] ? find_held_lock+0x2c/0x110 [ 94.065999][ T1077] ? __lock_release+0x103/0x460 [ 94.066158][ T1077] ? __virt_addr_valid+0x22b/0x430 [ 94.066329][ T1077] ? __pfx___lock_release+0x10/0x10 [ 94.066487][ T1077] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 94.066647][ T1077] __sys_sendmsg+0x109/0x1a0 [ 94.066798][ T1077] ? __pfx___sys_sendmsg+0x10/0x10 [ 94.066957][ T1077] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 94.067158][ T1077] do_syscall_64+0xc1/0x1d0 [ 94.067309][ T1077] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.067502][ T1077] RIP: 0033:0x7f1a046059a7 [ 94.067678][ T1077] 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 [ 94.068227][ T1077] RSP: 002b:00007ffcce087338 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 94.068455][ T1077] RAX: ffffffffffffffda RBX: 00007ffcce087a60 RCX: 00007f1a046059a7 [ 94.068702][ T1077] RDX: 0000000000000000 RSI: 00007ffcce0873a0 RDI: 0000000000000005 [ 94.068934][ T1077] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 94.069261][ T1077] R10: 00007f1a044c3ef8 R11: 0000000000000246 R12: 0000000000000002 [ 94.069491][ T1077] R13: 00000000677900b9 R14: 0000000000498600 R15: 0000000000000000 [ 94.069808][ T1077]