[ 58.897847][ T842] 8021q: 802.1Q VLAN Support v1.8 [ 61.763184][ T876] br1: port 1(veth1) entered blocking state [ 61.763498][ T876] br1: port 1(veth1) entered disabled state [ 61.763796][ T876] veth1: entered allmulticast mode [ 61.765950][ T876] veth1: entered promiscuous mode [ 61.850329][ T136] br1: port 1(veth1) entered blocking state [ 61.850805][ T136] br1: port 1(veth1) entered forwarding state [ 93.899296][ T1055] br1: port 1(veth1) entered disabled state [ 93.987215][ T1056] veth1: left allmulticast mode [ 93.987476][ T1056] veth1: left promiscuous mode [ 93.987883][ T1056] br1: port 1(veth1) entered disabled state [ 95.724916][ T1075] [ 95.725096][ T1075] ============================================ [ 95.725302][ T1075] WARNING: possible recursive locking detected [ 95.725516][ T1075] 6.13.0-rc5-virtme #1 Not tainted [ 95.725683][ T1075] -------------------------------------------- [ 95.725881][ T1075] ip/1075 is trying to acquire lock: [ 95.726054][ T1075] ffffffffb2fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 95.726430][ T1075] [ 95.726430][ T1075] but task is already holding lock: [ 95.726673][ T1075] ffffffffb2fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 95.727057][ T1075] [ 95.727057][ T1075] other info that might help us debug this: [ 95.727324][ T1075] Possible unsafe locking scenario: [ 95.727324][ T1075] [ 95.727583][ T1075] CPU0 [ 95.727745][ T1075] ---- [ 95.727874][ T1075] lock((netdev_chain).rwsem); [ 95.728056][ T1075] lock((netdev_chain).rwsem); [ 95.728240][ T1075] [ 95.728240][ T1075] *** DEADLOCK *** [ 95.728240][ T1075] [ 95.728518][ T1075] May be due to missing lock nesting notation [ 95.728518][ T1075] [ 95.728752][ T1075] 2 locks held by ip/1075: [ 95.728957][ T1075] #0: ffffffffb2fe7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 95.729274][ T1075] #1: ffffffffb2fd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 95.729625][ T1075] [ 95.729625][ T1075] stack backtrace: [ 95.729834][ T1075] CPU: 0 UID: 0 PID: 1075 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 95.730081][ T1075] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 95.730301][ T1075] Call Trace: [ 95.730427][ T1075] [ 95.730516][ T1075] dump_stack_lvl+0x82/0xd0 [ 95.730688][ T1075] print_deadlock_bug+0x40a/0x650 [ 95.730855][ T1075] validate_chain+0x5bf/0xae0 [ 95.731019][ T1075] ? __pfx_validate_chain+0x10/0x10 [ 95.731186][ T1075] ? hlock_class+0x4e/0x130 [ 95.731347][ T1075] ? mark_lock+0x38/0x3e0 [ 95.731494][ T1075] __lock_acquire+0xb9a/0x1680 [ 95.731666][ T1075] lock_acquire.part.0+0xeb/0x330 [ 95.731832][ T1075] ? blocking_notifier_call_chain+0x50/0x90 [ 95.732037][ T1075] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 95.732247][ T1075] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 95.732448][ T1075] ? trace_lock_acquire+0x14c/0x1f0 [ 95.732629][ T1075] ? lock_acquire+0x32/0xc0 [ 95.732829][ T1075] ? blocking_notifier_call_chain+0x50/0x90 [ 95.733036][ T1075] down_read+0x9f/0x340 [ 95.733172][ T1075] ? blocking_notifier_call_chain+0x50/0x90 [ 95.733368][ T1075] ? __pfx_down_read+0x10/0x10 [ 95.733543][ T1075] ? __lock_release+0x103/0x460 [ 95.733791][ T1075] ? netconsole_netdev_event+0x2c1/0x620 [ 95.733959][ T1075] ? __pfx___lock_release+0x10/0x10 [ 95.734150][ T1075] blocking_notifier_call_chain+0x50/0x90 [ 95.734318][ T1075] __netdev_upper_dev_unlink+0xd9/0x220 [ 95.734510][ T1075] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 95.734724][ T1075] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 95.734886][ T1075] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 95.735100][ T1075] ? rtnl_is_locked+0x15/0x20 [ 95.735289][ T1075] netdev_upper_dev_unlink+0x71/0xa0 [ 95.735478][ T1075] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 95.735686][ T1075] ? netconsole_netdev_event+0x2c1/0x620 [ 95.735913][ T1075] ? mutex_is_locked+0x1c/0x60 [ 95.736104][ T1075] ? rtnl_is_locked+0x15/0x20 [ 95.736275][ T1075] ? netdev_master_upper_dev_get+0x13/0x120 [ 95.736538][ T1075] vrf_device_event+0x78/0xe0 [vrf] [ 95.736731][ T1075] notifier_call_chain+0xcd/0x150 [ 95.736904][ T1075] blocking_notifier_call_chain+0x66/0x90 [ 95.737052][ T1075] unregister_netdevice_many_notify+0xa7b/0x1580 [ 95.737287][ T1075] ? hlock_class+0x4e/0x130 [ 95.737531][ T1075] ? mark_lock+0x38/0x3e0 [ 95.737702][ T1075] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 95.737933][ T1075] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 95.738193][ T1075] ? kfree+0xf3/0x330 [ 95.738330][ T1075] ? vlan_vid_del+0x310/0x5e0 [ 95.738529][ T1075] ? vlan_vid_del+0x310/0x5e0 [ 95.738708][ T1075] rtnl_dellink+0x348/0xa40 [ 95.738896][ T1075] ? __pfx_rtnl_dellink+0x10/0x10 [ 95.739107][ T1075] ? find_held_lock+0x2c/0x110 [ 95.739290][ T1075] ? __lock_release+0x103/0x460 [ 95.739462][ T1075] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 95.739660][ T1075] ? __pfx___lock_release+0x10/0x10 [ 95.739862][ T1075] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 95.740041][ T1075] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 95.740227][ T1075] ? __pfx_rtnl_dellink+0x10/0x10 [ 95.740395][ T1075] rtnetlink_rcv_msg+0x712/0xc10 [ 95.740569][ T1075] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 95.740738][ T1075] ? hlock_class+0x4e/0x130 [ 95.740909][ T1075] ? mark_lock+0x38/0x3e0 [ 95.741033][ T1075] ? __lock_acquire+0xb9a/0x1680 [ 95.741220][ T1075] netlink_rcv_skb+0x130/0x360 [ 95.741407][ T1075] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 95.741582][ T1075] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 95.741786][ T1075] ? netlink_deliver_tap+0x13e/0x340 [ 95.741936][ T1075] ? netlink_deliver_tap+0xc3/0x340 [ 95.742131][ T1075] netlink_unicast+0x44b/0x710 [ 95.742329][ T1075] ? __pfx_netlink_unicast+0x10/0x10 [ 95.742491][ T1075] ? find_held_lock+0x2c/0x110 [ 95.742671][ T1075] netlink_sendmsg+0x723/0xbe0 [ 95.742832][ T1075] ? __pfx_netlink_sendmsg+0x10/0x10 [ 95.743002][ T1075] ____sys_sendmsg+0x7ac/0xa10 [ 95.743199][ T1075] ? __pfx_____sys_sendmsg+0x10/0x10 [ 95.743400][ T1075] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 95.743633][ T1075] ___sys_sendmsg+0xee/0x170 [ 95.743840][ T1075] ? __pfx____sys_sendmsg+0x10/0x10 [ 95.744039][ T1075] ? kasan_save_stack+0x34/0x50 [ 95.744221][ T1075] ? kasan_save_stack+0x24/0x50 [ 95.744451][ T1075] ? __kasan_record_aux_stack+0x8e/0xa0 [ 95.744663][ T1075] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 95.744904][ T1075] ? __x64_sys_close+0x7c/0xd0 [ 95.745089][ T1075] ? do_syscall_64+0xc1/0x1d0 [ 95.745276][ T1075] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.745513][ T1075] ? __lock_acquire+0xb9a/0x1680 [ 95.745726][ T1075] ? find_held_lock+0x2c/0x110 [ 95.745924][ T1075] ? __lock_release+0x103/0x460 [ 95.746112][ T1075] ? __virt_addr_valid+0x22b/0x430 [ 95.746298][ T1075] ? __pfx___lock_release+0x10/0x10 [ 95.746485][ T1075] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 95.746664][ T1075] __sys_sendmsg+0x109/0x1a0 [ 95.746836][ T1075] ? __pfx___sys_sendmsg+0x10/0x10 [ 95.747011][ T1075] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 95.747218][ T1075] do_syscall_64+0xc1/0x1d0 [ 95.747387][ T1075] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.747725][ T1075] RIP: 0033:0x7f8b8eae39a7 [ 95.747923][ T1075] 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 [ 95.748665][ T1075] RSP: 002b:00007ffc36fe0948 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 95.748923][ T1075] RAX: ffffffffffffffda RBX: 00007ffc36fe1070 RCX: 00007f8b8eae39a7 [ 95.749301][ T1075] RDX: 0000000000000000 RSI: 00007ffc36fe09b0 RDI: 0000000000000005 [ 95.749551][ T1075] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 95.749785][ T1075] R10: 00007f8b8e9a1ef8 R11: 0000000000000246 R12: 0000000000000002 [ 95.750113][ T1075] R13: 0000000067792b54 R14: 0000000000498600 R15: 0000000000000000 [ 95.750370][ T1075] [ 95.771167][ T1075] ip (1075) used greatest stack depth: 23552 bytes left