panic: pthread_mutex_lock: Resource deadlock avoided

[alvin1221]

Describe the bug
Resource deadlock avoided.

Expected behavior

Actual Behavior

To Reproduce
start nanomq

nanomq broker start  --bridge ./nanomq_bridge.conf -n 128 -S 1024

emqtt_bench

emqtt_bench pub -h "192.168.23.105" -p 1883  -t "topic1/2" -s 2 -i 10 -I 10 -c 300 -q 2 -V 4 -L 500000

** Environment Details **

• NNG version
• Operating system and version
• Compiler and language used
• Shared or static library

Additional context

• crash log:

panic: pthread_mutex_lock: Resource deadlock avoided
This message is indicative of a BUG.
Report this at https://github.com/nanomq/nanomq
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(nni_show_backtrace+0xb8) [0x55555561cefb]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(nni_panic+0x1ca) [0x55555561d209]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0xde270) [0x555555632270]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(nni_plat_mtx_unlock+0x1c) [0x55555563240a]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(nni_mtx_unlock+0x1c) [0x555555629fbd]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0xe2780) [0x555555636780]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0xd4fa0) [0x555555628fa0]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0xd620d) [0x55555562a20d]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0xde9f3) [0x5555556329f3]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x9590) [0x7ffff75c4590]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x43) [0x7ffff74ba223]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(nni_show_backtrace+0xb8) [0x55555561cefb]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(nni_panic+0x1ca) [0x55555561d209]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0xde22a) [0x55555563222a]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(nni_plat_mtx_lock+0x1c) [0x5555556323eb]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(nni_mtx_lock+0x1c) [0x555555629f9e]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0x12bf3f) [0x55555567ff3f]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0x12d9f0) [0x5555556819f0]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0xd4fa0) [0x555555628fa0]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0xd620d) [0x55555562a20d]
/home/alvin/projects/emqx/nanomq/build/nanomq/nanomq(+0xde9f3) [0x5555556329f3]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x9590) [0x7ffff75c4590]
/lib/x86_64-linux-gnu/libc.so.6(clone+0x43) [0x7ffff74ba223]

• nanomq_bridge.conf:

##====================================================================
## Configuration for MQTT Broker Bridge
##====================================================================

## Bridge address: host:port .
##
## Value: String
## Example: mqtt-tcp://127.0.0.1:1883
bridge.mqtt.address=mqtt-tcp://192.168.23.105:1885

## Protocol version of the bridge.
##
## Value: Enum
## - 5: mqttv5
## - 4: mqttv4
## - 3: mqttv3
bridge.mqtt.proto_ver=4

## Whether to enable bridge mode for mqtt bridge
##
## This option is prepared for the mqtt broker which does not
## support bridge_mode such as the mqtt-plugin of the rabbitmq
##
## Value: boolean
bridge.mqtt.bridge_mode=true

## The ClientId of a remote bridge.
##
## Placeholders:
##  ${node}: Node name
##
## Value: String
#bridge.mqtt.clientid=bridge_client

## Ping interval of a down bridge.
##
## Value: Duration
## Default: 10 seconds
bridge.mqtt.keepalive=60

## The Clean start flag of a remote bridge.
##
## Value: boolean
## Default: true
##
## NOTE: Some IoT platforms require clean_start
##       must be set to 'true'
bridge.mqtt.clean_start=true

## The username for a remote bridge.
##
## Value: String
bridge.mqtt.username=username

## The password for a remote bridge.
##
## Value: String
bridge.mqtt.password=passwd

## Topics that need to be forward to IoTHUB
##
## Value: String
## Example: topic1/#,topic2/#
bridge.mqtt.forwards=topic1/#,topic2/#

## Need to subscribe to remote broker topics
##
## Value: String
bridge.mqtt.subscription.1.topic=cmd/topic1

## Need to subscribe to remote topics QoS.
##
## Value: Number
bridge.mqtt.subscription.1.qos=1

## Need to subscribe to remote broker topics
##
## Value: String
bridge.mqtt.subscription.2.topic=cmd/topic2

## Need to subscribe to remote topics QoS.
##
## Value: Number
bridge.mqtt.subscription.2.qos=2

## parallel
## Handle a specified maximum number of outstanding requests
##
## Value: 1-infinity
bridge.mqtt.parallel=4

[JaylinYu]

this issue belongs to nanonng