[JENKINS-69475] "java.lang.NullPointerException" in "support-core-plugin"

Shortly after startup we see the following SEVERE error with stacktrace:

2022-08-22 12:09:22.860+0000 [id=41]    SEVERE  hudson.triggers.SafeTimerTask#run: Timer task com.cloudbees.jenkins.support.slowrequest.SlowRequestChecker@​78a8ebac failed

java.lang.NullPointerException

        at java.base/java.util.regex.Matcher.getTextLength(Matcher.java:1770)

        at java.base/java.util.regex.Matcher.reset(Matcher.java:416)

        at java.base/java.util.regex.Matcher.(Matcher.java:253)

        at java.base/java.util.regex.Pattern.matcher(Pattern.java:1133)

        at com.cloudbees.jenkins.support.filter.InetAddressContentFilter.filter(InetAddressContentFilter.java:67)

        at com.cloudbees.jenkins.support.filter.AllContentFilters.filter(AllContentFilters.java:43)

        at com.cloudbees.jenkins.support.slowrequest.InflightRequest.lambda$writeHeader$1(InflightRequest.java:80)

        at java.base/java.util.Optional.map(Optional.java:265)

        at com.cloudbees.jenkins.support.slowrequest.InflightRequest.writeHeader(InflightRequest.java:80)

        at com.cloudbees.jenkins.support.slowrequest.SlowRequestChecker.doRun(SlowRequestChecker.java:104)

        at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:92)

        at jenkins.security.ImpersonatingScheduledExecutorService$1.run(ImpersonatingScheduledExecutorService.java:67)

        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)

        at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)

        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)

        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)

        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)

        at java.base/java.lang.Thread.run(Thread.java:829)

Looks like a 'null' field somewhere in a 'InflightRequest' used in 'SlowRequestFilter'?

---
Originally reported by lmarthorburn, imported from: "java.lang.NullPointerException" in "support-core-plugin"

• assignee: allan_burdajewicz
  
• status: Open
  
• priority: Major
  
• component(s): support-core-plugin
  
• resolution: Unresolved
  
• votes: 0
  
• watchers: 2
  
• imported: 20251212-090250
  

Raw content of original issue

Shortly after startup we see the following SEVERE error with stacktrace:




2022-08-22 12:09:22.860+0000 [id=41]    SEVERE  hudson.triggers.SafeTimerTask#run: Timer task com.cloudbees.jenkins.support.slowrequest.SlowRequestChecker@78a8ebac failed

java.lang.NullPointerException

        at java.base/java.util.regex.Matcher.getTextLength(Matcher.java:1770)

        at java.base/java.util.regex.Matcher.reset(Matcher.java:416)

        at java.base/java.util.regex.Matcher.<init>(Matcher.java:253)

        at java.base/java.util.regex.Pattern.matcher(Pattern.java:1133)

        at com.cloudbees.jenkins.support.filter.InetAddressContentFilter.filter(InetAddressContentFilter.java:67)

        at com.cloudbees.jenkins.support.filter.AllContentFilters.filter(AllContentFilters.java:43)

        at com.cloudbees.jenkins.support.slowrequest.InflightRequest.lambda$writeHeader$1(InflightRequest.java:80)

        at java.base/java.util.Optional.map(Optional.java:265)

        at com.cloudbees.jenkins.support.slowrequest.InflightRequest.writeHeader(InflightRequest.java:80)

        at com.cloudbees.jenkins.support.slowrequest.SlowRequestChecker.doRun(SlowRequestChecker.java:104)

        at hudson.triggers.SafeTimerTask.run(SafeTimerTask.java:92)

        at jenkins.security.ImpersonatingScheduledExecutorService$1.run(ImpersonatingScheduledExecutorService.java:67)

        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)

        at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305)

        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305)

        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)

        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)

        at java.base/java.lang.Thread.run(Thread.java:829)



Looks like a 'null' field somewhere in a 'InflightRequest' used in 'SlowRequestFilter'?

environment

```
Jenkins version: 2.346.3

support-core-plugin Version 1204.v7ee88742a_53f
```

Start at InetAddressContentFilter.java:67 and trace the value passed from InflightRequest.writeHeader at line 80 through SlowRequestChecker.doRun at line 104. Reproduce the reported startup scenario and identify which value is null; done means the scheduled task no longer emits this NullPointerException under those conditions.

Written by the indexing model from the issue text.