[ 12.231143][ T286] 8021q: 802.1Q VLAN Support v1.8 [ 14.872920][ T323] br1: port 1(veth1) entered blocking state [ 14.873880][ T323] br1: port 1(veth1) entered disabled state [ 14.874264][ T323] veth1: entered allmulticast mode [ 14.876270][ T323] veth1: entered promiscuous mode [ 14.955515][ T40] br1: port 1(veth1) entered blocking state [ 14.955973][ T40] br1: port 1(veth1) entered forwarding state [ 46.011902][ T504] br1: port 1(veth1) entered disabled state [ 46.099911][ T505] veth1: left allmulticast mode [ 46.100299][ T505] veth1: left promiscuous mode [ 46.101235][ T505] br1: port 1(veth1) entered disabled state [ 47.692418][ T524] [ 47.692569][ T524] ============================================ [ 47.692775][ T524] WARNING: possible recursive locking detected [ 47.692970][ T524] 6.13.0-rc5-virtme #1 Not tainted [ 47.693118][ T524] -------------------------------------------- [ 47.693307][ T524] ip/524 is trying to acquire lock: [ 47.693463][ T524] ffffffff889d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 47.693783][ T524] [ 47.693783][ T524] but task is already holding lock: [ 47.693999][ T524] ffffffff889d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 47.694304][ T524] [ 47.694304][ T524] other info that might help us debug this: [ 47.694530][ T524] Possible unsafe locking scenario: [ 47.694530][ T524] [ 47.694745][ T524] CPU0 [ 47.694856][ T524] ---- [ 47.694971][ T524] lock((netdev_chain).rwsem); [ 47.695128][ T524] lock((netdev_chain).rwsem); [ 47.695290][ T524] [ 47.695290][ T524] *** DEADLOCK *** [ 47.695290][ T524] [ 47.695519][ T524] May be due to missing lock nesting notation [ 47.695519][ T524] [ 47.695733][ T524] 2 locks held by ip/524: [ 47.695850][ T524] #0: ffffffff889e7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x228/0xa40 [ 47.696124][ T524] #1: ffffffff889d6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 47.696423][ T524] [ 47.696423][ T524] stack backtrace: [ 47.696601][ T524] CPU: 0 UID: 0 PID: 524 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 47.696821][ T524] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 47.697009][ T524] Call Trace: [ 47.697122][ T524] [ 47.697198][ T524] dump_stack_lvl+0x82/0xd0 [ 47.697353][ T524] print_deadlock_bug+0x40a/0x650 [ 47.697514][ T524] validate_chain+0x5bf/0xae0 [ 47.697666][ T524] ? __pfx_validate_chain+0x10/0x10 [ 47.697818][ T524] ? hlock_class+0x4e/0x130 [ 47.697966][ T524] ? mark_lock+0x38/0x3e0 [ 47.698086][ T524] __lock_acquire+0xb9a/0x1680 [ 47.698234][ T524] lock_acquire.part.0+0xeb/0x330 [ 47.698379][ T524] ? blocking_notifier_call_chain+0x50/0x90 [ 47.698561][ T524] ? netconsole_process_cleanups_core+0x2e/0x3d0 [ 47.698748][ T524] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 47.698895][ T524] ? trace_lock_acquire+0x14c/0x1f0 [ 47.699039][ T524] ? lock_acquire+0x32/0xc0 [ 47.699193][ T524] ? blocking_notifier_call_chain+0x50/0x90 [ 47.699375][ T524] down_read+0x9f/0x340 [ 47.699488][ T524] ? blocking_notifier_call_chain+0x50/0x90 [ 47.699668][ T524] ? __pfx_down_read+0x10/0x10 [ 47.699814][ T524] ? __lock_release+0x103/0x460 [ 47.699958][ T524] ? netconsole_netdev_event+0x2c1/0x620 [ 47.700105][ T524] ? __pfx___lock_release+0x10/0x10 [ 47.700260][ T524] blocking_notifier_call_chain+0x50/0x90 [ 47.700410][ T524] __netdev_upper_dev_unlink+0xd9/0x220 [ 47.700560][ T524] ? __pfx___netdev_upper_dev_unlink+0x10/0x10 [ 47.700741][ T524] ? __mutex_unlock_slowpath+0x14a/0x3d0 [ 47.700888][ T524] ? __pfx___mutex_unlock_slowpath+0x10/0x10 [ 47.701069][ T524] ? rtnl_is_locked+0x15/0x20 [ 47.701219][ T524] netdev_upper_dev_unlink+0x71/0xa0 [ 47.701370][ T524] ? __pfx_netdev_upper_dev_unlink+0x10/0x10 [ 47.701557][ T524] ? netconsole_netdev_event+0x2c1/0x620 [ 47.701705][ T524] ? mutex_is_locked+0x1c/0x60 [ 47.701851][ T524] ? rtnl_is_locked+0x15/0x20 [ 47.701997][ T524] ? netdev_master_upper_dev_get+0x13/0x120 [ 47.702183][ T524] vrf_device_event+0x78/0xe0 [vrf] [ 47.702338][ T524] notifier_call_chain+0xcd/0x150 [ 47.702485][ T524] blocking_notifier_call_chain+0x66/0x90 [ 47.702635][ T524] unregister_netdevice_many_notify+0xa7b/0x1580 [ 47.702817][ T524] ? hlock_class+0x4e/0x130 [ 47.702961][ T524] ? mark_lock+0x38/0x3e0 [ 47.703080][ T524] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 47.703265][ T524] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 47.703455][ T524] ? kfree+0xf3/0x330 [ 47.703568][ T524] ? vlan_vid_del+0x310/0x5e0 [ 47.703719][ T524] ? vlan_vid_del+0x310/0x5e0 [ 47.703867][ T524] rtnl_dellink+0x348/0xa40 [ 47.704013][ T524] ? __pfx_rtnl_dellink+0x10/0x10 [ 47.704174][ T524] ? find_held_lock+0x2c/0x110 [ 47.704321][ T524] ? __lock_release+0x103/0x460 [ 47.704467][ T524] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 47.704620][ T524] ? __pfx___lock_release+0x10/0x10 [ 47.704766][ T524] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 47.704914][ T524] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 47.705062][ T524] ? __pfx_rtnl_dellink+0x10/0x10 [ 47.705223][ T524] rtnetlink_rcv_msg+0x712/0xc10 [ 47.705369][ T524] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 47.705523][ T524] ? hlock_class+0x4e/0x130 [ 47.705676][ T524] ? mark_lock+0x38/0x3e0 [ 47.705788][ T524] ? __lock_acquire+0xb9a/0x1680 [ 47.705935][ T524] netlink_rcv_skb+0x130/0x360 [ 47.706086][ T524] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 47.706233][ T524] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 47.706385][ T524] ? netlink_deliver_tap+0x13e/0x340 [ 47.706535][ T524] ? netlink_deliver_tap+0xc3/0x340 [ 47.706686][ T524] netlink_unicast+0x44b/0x710 [ 47.706834][ T524] ? __pfx_netlink_unicast+0x10/0x10 [ 47.706980][ T524] ? find_held_lock+0x2c/0x110 [ 47.707130][ T524] netlink_sendmsg+0x723/0xbe0 [ 47.707276][ T524] ? __pfx_netlink_sendmsg+0x10/0x10 [ 47.707426][ T524] ____sys_sendmsg+0x7ac/0xa10 [ 47.707573][ T524] ? __pfx_____sys_sendmsg+0x10/0x10 [ 47.707721][ T524] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 47.707907][ T524] ___sys_sendmsg+0xee/0x170 [ 47.708061][ T524] ? __pfx____sys_sendmsg+0x10/0x10 [ 47.708208][ T524] ? kasan_save_stack+0x34/0x50 [ 47.708353][ T524] ? kasan_save_stack+0x24/0x50 [ 47.708498][ T524] ? __kasan_record_aux_stack+0x8e/0xa0 [ 47.708646][ T524] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 47.708835][ T524] ? __x64_sys_close+0x7c/0xd0 [ 47.708983][ T524] ? do_syscall_64+0xc1/0x1d0 [ 47.709130][ T524] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 47.709320][ T524] ? __lock_acquire+0xb9a/0x1680 [ 47.709475][ T524] ? find_held_lock+0x2c/0x110 [ 47.709622][ T524] ? __lock_release+0x103/0x460 [ 47.709767][ T524] ? __virt_addr_valid+0x22b/0x430 [ 47.709916][ T524] ? __pfx___lock_release+0x10/0x10 [ 47.710066][ T524] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 47.710216][ T524] __sys_sendmsg+0x109/0x1a0 [ 47.710362][ T524] ? __pfx___sys_sendmsg+0x10/0x10 [ 47.710518][ T524] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 47.710736][ T524] do_syscall_64+0xc1/0x1d0 [ 47.710885][ T524] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 47.711068][ T524] RIP: 0033:0x7f673a5929a7 [ 47.711257][ T524] 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 [ 47.711817][ T524] RSP: 002b:00007ffed3763928 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 47.712052][ T524] RAX: ffffffffffffffda RBX: 00007ffed3764050 RCX: 00007f673a5929a7 [ 47.712279][ T524] RDX: 0000000000000000 RSI: 00007ffed3763990 RDI: 0000000000000005 [ 47.712504][ T524] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 47.712722][ T524] R10: 00007f673a450ef8 R11: 0000000000000246 R12: 0000000000000002 [ 47.713034][ T524] R13: 0000000067795772 R14: 0000000000498600 R15: 0000000000000000 [ 47.713263][ T524]