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[release/11.0] Fix software EH memory leak on Unix - #135541
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JulieLeeMSFT merged 1 commit intoOct 12, 2026
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Backport of dotnet#135290, including dotnet/runtime@4d1b425 to skip the regression test where working-set monitoring is unsupported. The CoreCLR change is adapted to the GCX_COOP scope used on release/11.0. Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Copilot-Session: 9fe58a3a-d045-4e26-af87-9b85acdea60d
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Backport of #135290 to release/11.0
/cc @janvorli
Customer Impact
There is a memory leak of
CONTEXTandEXCEPTION_RECORDdata structures on Unix (about 3400 bytes on amd64) when theDispatchManagedExceptionfor software managed exceptions thrown from native runtime code is executed. The managed exception handling is not taking ownership of the context and exception records in cases they were dynamically allocated.Regression
Testing
Coreclr and libraries tests, directed test for the issue that was added with the fix
Risk
Low, it changes software exception handling to the same plan as was always there for hardware exception handling w.r.t. to the ownership of the contexts.