lh2debug opened a new pull request, #3140: URL: https://github.com/apache/brpc/pull/3140
### What problem does this PR solve? Issue Number: resolve #3068 Problem Summary: Span lifecycle management defect in distributed storage system: Problem Scenario: - ChunkServer maintains a parent span for client WriteChunk requests - Two child spans are created for append_entries RPCs to followers - When the first follower responds, the parent span is prematurely destroyed along with all child spans - When the second follower responds, it attempts to access the already-freed child span, causing use-after-free Root Cause: a. Premature deallocation: Parent span destroyed while child spans still in use b. Dangling pointer: Response callback accesses freed span objects More details: https://github.com/lh2debug/brpc/blob/master-lh2-fix-span-pdf/Optimization%20of%20RPCZ%20Span%20Lifecycle%20Management.pdf ### What is changed and the side effects? Changed: Side effects: NO - Performance effects: NO - Breaking backward compatibility: --- ### Check List: - Please make sure your changes are compilable. - When providing us with a new feature, it is best to add related tests. - Please follow [Contributor Covenant Code of Conduct](https://github.com/apache/brpc/blob/master/CODE_OF_CONDUCT.md). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
