mis98zb opened a new issue #7227:
URL: https://github.com/apache/skywalking/issues/7227
Please answer these questions before submitting your issue.
- Why do you submit this issue?
- [ ] Question or discussion
- [X] Bug
- [ ] Requirement
- [ ] Feature or performance improvement
___
### Bug
- Which version of SkyWalking, OS, and JRE?
SkyWalking 8.6.0， centos8， openjdk 11 docker image
skywalking files:
```
│ skywalking-agent.jar
│
├─activations
│ apm-toolkit-log4j-1.x-activation-8.6.0.jar
│ apm-toolkit-log4j-2.x-activation-8.6.0.jar
│ apm-toolkit-logback-1.x-activation-8.6.0.jar
│ apm-toolkit-logging-common-8.6.0.jar
│ apm-toolkit-trace-activation-8.6.0.jar
│
├─config
│ agent.config
│
└─plugins
apm-ehcache-2.x-plugin-8.6.0.jar
apm-feign-default-http-9.x-plugin-8.6.0.jar
apm-httpClient-4.x-plugin-8.6.0.jar
apm-httpclient-commons-8.6.0.jar
apm-jdbc-commons-8.6.0.jar
apm-jetty-client-9.x-plugin-8.6.0.jar
apm-lettuce-5.x-plugin-8.6.0.jar
apm-mybatis-3.x-plugin-8.6.0.jar
apm-mysql-8.x-plugin-8.6.0.jar
apm-mysql-commons-8.6.0.jar
apm-netty-socketio-plugin-8.6.0.jar
apm-okhttp-3.x-plugin-8.6.0.jar
apm-okhttp-4.x-plugin-8.6.0.jar
apm-okhttp-common-8.6.0.jar
apm-quartz-scheduler-2.x-plugin-8.6.0.jar
apm-resttemplate-4.3.x-plugin-8.6.0.jar
apm-spring-annotation-plugin-8.6.0.jar
apm-spring-async-annotation-plugin-8.6.0.jar
apm-spring-cloud-gateway-3.x-plugin-8.6.0.jar
apm-spring-concurrent-util-4.x-plugin-8.6.0.jar
apm-spring-core-patch-8.6.0.jar
apm-spring-scheduled-annotation-plugin-8.6.0.jar
apm-spring-tx-plugin-8.6.0.jar
apm-spring-webflux-5.x-plugin-8.6.0.jar
apm-springmvc-annotation-5.x-plugin-8.6.0.jar
apm-springmvc-annotation-commons-8.6.0.jar
apm-undertow-2.x-plugin-8.6.0.jar
resteasy-server-3.x-plugin-8.6.0.jar
spring-commons-8.6.0.jar
spring-webflux-5.x-webclient-plugin-8.6.0.jar
```
- What happened?
If possible, provide a way to reproduce the error. e.g. demo application,
component version.
We got plenty of NPEs as below:
```
2021-07-02 11:14:55.578 70224209 [XNIO-1 task-2] ERROR
org.jboss.threads.errors - [TID:N/A] - Thread Thread[XNIO-1 task-2,5,main]
threw an uncaught exception
java.lang.NullPointerException: null
at
org.apache.skywalking.apm.agent.core.context.ContextManager.stopSpan(ContextManager.java:186)
at
org.apache.skywalking.apm.plugin.undertow.v2x.SWRunnable.run(SWRunnable.java:47)
at
org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at
org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:2019)
at
org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1558)
at
org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1449)
at java.base/java.lang.Thread.run(Unknown Source)
```
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