[ 13.356721][ T288] 8021q: 802.1Q VLAN Support v1.8 [ 15.422958][ T315] br1: port 1(veth1) entered blocking state [ 15.423386][ T315] br1: port 1(veth1) entered disabled state [ 15.423793][ T315] veth1: entered allmulticast mode [ 15.425833][ T315] veth1: entered promiscuous mode [ 15.519889][ T40] br1: port 1(veth1) entered blocking state [ 15.520294][ T40] br1: port 1(veth1) entered forwarding state [ 33.452335][ T454] br1: port 1(veth1) entered disabled state [ 33.533753][ T455] veth1: left allmulticast mode [ 33.534072][ T455] veth1: left promiscuous mode [ 33.534828][ T455] br1: port 1(veth1) entered disabled state [ 34.775313][ T468] [ 34.775536][ T468] ============================================ [ 34.775853][ T468] WARNING: possible recursive locking detected [ 34.776161][ T468] 6.13.0-rc5-virtme #1 Not tainted [ 34.776405][ T468] -------------------------------------------- [ 34.776688][ T468] ip/468 is trying to acquire lock: [ 34.776924][ T468] ffffffffb61d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 34.777418][ T468] [ 34.777418][ T468] but task is already holding lock: [ 34.777779][ T468] ffffffffb61d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 34.778279][ T468] [ 34.778279][ T468] other info that might help us debug this: [ 34.778517][ T468] Possible unsafe locking scenario: [ 34.778517][ T468] [ 34.778753][ T468] CPU0 [ 34.778877][ T468] ---- [ 34.779041][ T468] lock((netdev_chain).rwsem); [ 34.779295][ T468] lock((netdev_chain).rwsem); [ 34.779544][ T468] [ 34.779544][ T468] *** DEADLOCK *** [ 34.779544][ T468] [ 34.779901][ T468] May be due to missing lock nesting notation [ 34.779901][ T468] [ 34.780271][ T468] 2 locks held by ip/468: [ 34.780458][ T468] #0: ffffffffb61e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 34.780907][ T468] #1: ffffffffb61d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 34.781299][ T468] [ 34.781299][ T468] stack backtrace: [ 34.781501][ T468] CPU: 0 UID: 0 PID: 468 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 34.781750][ T468] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 34.781969][ T468] Call Trace: [ 34.782094][ T468] [ 34.782179][ T468] dump_stack_lvl+0x82/0xd0 [ 34.782348][ T468] print_deadlock_bug+0x40a/0x650 [ 34.782513][ T468] validate_chain+0x5bf/0xae0 [ 34.782679][ T468] ? __pfx_validate_chain+0x10/0x10 [ 34.782850][ T468] ? hlock_class+0x4e/0x130 [ 34.783027][ T468] ? mark_lock+0x38/0x3e0 [ 34.783154][ T468] __lock_acquire+0xb9a/0x1680 [ 34.783323][ T468] lock_acquire.part.0+0xeb/0x330 [ 34.783473][ T468] ? blocking_notifier_call_chain+0x50/0x90 [ 34.783661][ T468] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 34.783852][ T468] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.784020][ T468] ? trace_lock_acquire+0x14c/0x1f0 [ 34.784174][ T468] ? lock_acquire+0x32/0xc0 [ 34.784323][ T468] ? blocking_notifier_call_chain+0x50/0x90 [ 34.784512][ T468] down_read+0x9f/0x340 [ 34.784627][ T468] ? blocking_notifier_call_chain+0x50/0x90 [ 34.784815][ T468] ? __pfx_down_read+0x10/0x10 [ 34.784973][ T468] ? __lock_release+0x103/0x460 [ 34.785127][ T468] ? netconsole_netdev_event+0x2c1/0x620 [ 34.785285][ T468] ? __pfx___lock_release+0x10/0x10 [ 34.785437][ T468] blocking_notifier_call_chain+0x50/0x90 [ 34.785590][ T468] __netdev_upper_dev_unlink+0xd9/0x220 [ 34.785744][ T468] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 34.785939][ T468] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 34.786091][ T468] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 34.786283][ T468] ? rtnl_is_locked+0x15/0x20 [ 34.786438][ T468] netdev_upper_dev_unlink+0x71/0xa0 [ 34.786588][ T468] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 34.786778][ T468] ? netconsole_netdev_event+0x2c1/0x620 [ 34.786937][ T468] ? mutex_is_locked+0x1c/0x60 [ 34.787090][ T468] ? rtnl_is_locked+0x15/0x20 [ 34.787246][ T468] ? netdev_master_upper_dev_get+0x13/0x120 [ 34.787434][ T468] vrf_device_event+0x78/0xe0 [vrf] [ 34.787588][ T468] notifier_call_chain+0xcd/0x150 [ 34.787739][ T468] blocking_notifier_call_chain+0x66/0x90 [ 34.787892][ T468] unregister_netdevice_many_notify+0xa7b/0x1580 [ 34.788103][ T468] ? __lock_release+0x103/0x460 [ 34.788266][ T468] ? __pfx___lock_release+0x10/0x10 [ 34.788434][ T468] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 34.788637][ T468] ? hlock_class+0x4e/0x130 [ 34.788804][ T468] ? mark_held_locks+0x9e/0xe0 [ 34.788976][ T468] ? __pfx_vlan_info_rcu_free+0x10/0x10 [ 34.789141][ T468] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 34.789330][ T468] rtnl_dellink+0x348/0xa40 [ 34.789481][ T468] ? __pfx_rtnl_dellink+0x10/0x10 [ 34.789650][ T468] ? find_held_lock+0x2c/0x110 [ 34.789801][ T468] ? __lock_release+0x103/0x460 [ 34.789975][ T468] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 34.790161][ T468] ? __pfx___lock_release+0x10/0x10 [ 34.790314][ T468] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.790467][ T468] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 34.790618][ T468] ? __pfx_rtnl_dellink+0x10/0x10 [ 34.790771][ T468] rtnetlink_rcv_msg+0x712/0xc10 [ 34.790931][ T468] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 34.791084][ T468] ? hlock_class+0x4e/0x130 [ 34.791237][ T468] ? mark_lock+0x38/0x3e0 [ 34.791354][ T468] ? __lock_acquire+0xb9a/0x1680 [ 34.791505][ T468] netlink_rcv_skb+0x130/0x360 [ 34.791655][ T468] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 34.791806][ T468] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 34.791976][ T468] ? netlink_deliver_tap+0x13e/0x340 [ 34.792128][ T468] ? netlink_deliver_tap+0xc3/0x340 [ 34.792285][ T468] netlink_unicast+0x44b/0x710 [ 34.792435][ T468] ? __pfx_netlink_unicast+0x10/0x10 [ 34.792584][ T468] ? find_held_lock+0x2c/0x110 [ 34.792737][ T468] netlink_sendmsg+0x723/0xbe0 [ 34.792887][ T468] ? __pfx_netlink_sendmsg+0x10/0x10 [ 34.793050][ T468] ____sys_sendmsg+0x7ac/0xa10 [ 34.793208][ T468] ? __pfx_____sys_sendmsg+0x10/0x10 [ 34.793368][ T468] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 34.793572][ T468] ___sys_sendmsg+0xee/0x170 [ 34.793722][ T468] ? __pfx____sys_sendmsg+0x10/0x10 [ 34.793872][ T468] ? kasan_save_stack+0x34/0x50 [ 34.794054][ T468] ? kasan_save_stack+0x24/0x50 [ 34.794212][ T468] ? __kasan_record_aux_stack+0x8e/0xa0 [ 34.794364][ T468] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 34.794551][ T468] ? __x64_sys_close+0x7c/0xd0 [ 34.794705][ T468] ? do_syscall_64+0xc1/0x1d0 [ 34.794854][ T468] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 34.795053][ T468] ? __lock_acquire+0xb9a/0x1680 [ 34.795211][ T468] ? find_held_lock+0x2c/0x110 [ 34.795365][ T468] ? __lock_release+0x103/0x460 [ 34.795514][ T468] ? __virt_addr_valid+0x22b/0x430 [ 34.795667][ T468] ? __pfx___lock_release+0x10/0x10 [ 34.795816][ T468] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.795977][ T468] __sys_sendmsg+0x109/0x1a0 [ 34.796129][ T468] ? __pfx___sys_sendmsg+0x10/0x10 [ 34.796284][ T468] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 34.796485][ T468] do_syscall_64+0xc1/0x1d0 [ 34.796637][ T468] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 34.796822][ T468] RIP: 0033:0x7f12e98b29a7 [ 34.796996][ T468] 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 [ 34.797526][ T468] RSP: 002b:00007ffc739455f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 34.797762][ T468] RAX: ffffffffffffffda RBX: 00007ffc73945d20 RCX: 00007f12e98b29a7 [ 34.798000][ T468] RDX: 0000000000000000 RSI: 00007ffc73945660 RDI: 0000000000000005 [ 34.798250][ T468] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 34.798480][ T468] R10: 00007f12e9770ef8 R11: 0000000000000246 R12: 0000000000000002 [ 34.798717][ T468] R13: 0000000067795488 R14: 0000000000498600 R15: 0000000000000000 [ 34.798976][ T468]