test before the demo

[github-actions[bot]]

Issue Link: https://github.com/eclipse-openj9/openj9/pull/19472 Title: Ensure all necessary cached JITServer AOT cache records are valid during deserialization Actual Components: comp:jitserver Recommended Components: comp:vm, comp:test, comp:gc Actual Assignees: mpirvu Recommended Assignees: gacholio, fengxue-IS, babsingh

Issue Link: https://github.com/eclipse-openj9/openj9/pull/19584 Title: Enabled AOT cache at server by default Actual Components: comp:jitserver Recommended Components: comp:vm, comp:build, comp:test Actual Assignees: mpirvu Recommended Assignees: hangshao0, JasonFengJ9, babsingh

Issue Link: https://github.com/eclipse-openj9/openj9/issues/19366 Title: jdk23 concurrent/tck/JSR166TestCase crash vmState=0x00000000 Actual Components: comp:vm, test failure, jdk23 Recommended Components: comp:vm, comp:gc, comp:test Actual Assignees: babsingh Recommended Assignees: pshipton, fengxue-IS, ChengJin01

Issue Link: https://github.com/eclipse-openj9/openj9/pull/19470 Title: AArch64: Remove obsolete JIT helper entries for arraycopy Actual Components: comp:jit, arch:aarch64 Recommended Components: comp:vm, comp:gc, comp:test Actual Assignees: 0xdaryl Recommended Assignees: gacholio, keithc-ca, amicic

Issue Link: https://github.com/eclipse-openj9/openj9/issues/19390 Title: Tests missing native tag Actual Components: good first issue, comp:test Recommended Components: comp:test, comp:vm, comp:build Actual Assignees: rohit-satya Recommended Assignees: llxia, pshipton, babsingh

[coolujain]

TriagerX /summarize -chatgpt https://github.com/eclipse-openj9/openj9/issues/19366

[github-actions[bot]]

Issue Summary:

The provided error message indicates a segmentation error during a test in the JSR166TestCase class in the ForkJoinPool-Common-Parallelism. This error is likely caused by a thread attempting to access a memory address that is outside of its assigned address space. The affected code could be related to the Java_util_concurrent_tck package and the libpthread.so.0 library. To resolve this issue, it is recommended to review the code for possible memory access violations and to check the compatibility of the hardware and architecture being used. Further insights could be gathered by analyzing the stack backtrace and understanding the modules involved.

[coolujain]

TriagerX /summarize -gemini https://github.com/eclipse-openj9/openj9/issues/19366

[github-actions[bot]]

Error Summary:

Error: The OpenJ9 JVM crashed with a Segmentation Fault (SIGSEGV) during a test in the jdk23 concurrent/tck/JSR166TestCase suite.

Potential Root Cause: The crash occurs during the testAbnormalQuietlyInvoke test and involves the pthread_mutex_lock function, suggesting a potential issue with thread synchronization and mutex locks. The ForkJoinPool implementation in the JSR166TestCase is the most likely culprit.

Affected Code:

• java/util/concurrent/tck/JSR166TestCase.java#forkjoinpool-common-parallelism
• The ForkJoinPool implementation and its interactions with the pthread_mutex_lock function.

Debugging Steps:

1. Analyze the stack trace: Examine the provided stack trace for potential errors in the ForkJoinPool implementation, specifically in the context of the pthread_mutex_lock call.
2. Review relevant code: Investigate the ForkJoinPool implementation and its interactions with thread synchronization mechanisms (including mutex locks).
3. Inspect memory allocation: Analyze memory allocation patterns around the crash to identify potential memory corruption or out-of-bounds access.
4. Test with different configurations: Run the test suite with different JVM options and thread configurations to isolate the issue.
5. Utilize debugging tools: Leverage debuggers like GDB to step through the code and investigate the state of the JVM and its internal structures at the time of the crash.

Insights:

• The crash is a segmentation fault, indicating that the JVM attempted to access a memory location that it was not authorized to access.
• The pthread_mutex_lock function is involved, suggesting potential issues with thread synchronization, race conditions, or corrupted mutex states.
• This error occurs on AArch64, highlighting the importance of cross-architecture testing.

Additional Notes: The provided logs include information about the JVM version, CPU, and operating system, which might help to identify platform-specific issues. It is important to analyze the logs and code carefully to determine the root cause and implement an appropriate fix.

[Belami02]

TriagerX /recommend -triagerx https://github.com/eclipse-openj9/openj9/issues/19366

[Belami02]

TriagerX /interact -chatgpt What have we discussed so far?

[github-actions[bot]]

We have discussed an issue in the OpenJ9 project (#19366) related to a segmentation fault during a test in the jdk23 concurrent/tck/JSR166TestCase suite. The crash involves the pthread_mutex_lock function, indicating a potential issue with thread synchronization and mutex locks in the ForkJoinPool implementation. Debugging steps and potential root causes were also outlined to address and resolve the issue effectively.

[Belami02]

TriagerX /interact -gemini What have we discussed so far?

[github-actions[bot]]

We have been discussing GitHub issue #19366 in the OpenJ9 project. This issue involves a crash in the jdk23 concurrent/tck/JSR166TestCase suite, specifically during the testAbnormalQuietlyInvoke test. The crash is a segmentation fault (SIGSEGV) and appears to be related to the pthread_mutex_lock function, suggesting potential problems with thread synchronization and mutex locks.

We analyzed the error, pinpointing the potential root cause to the ForkJoinPool implementation and its interactions with the pthread_mutex_lock function. We also identified several steps that can be taken to debug the issue, such as analyzing the stack trace, reviewing the relevant code, and using debugging tools.

Overall, we have identified the issue, outlined its potential root cause, and suggested several approaches to debug and resolve the issue.

[Belami02]

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[github-actions[bot]]

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