[release/10.0] Fix race condition when createdump tries to read /proc/pid/mem before prctl(PR_SET_PTRACER, childpid) is set#120071
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steveisok merged 6 commits intorelease/10.0from Sep 25, 2025
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…ad /proc/pid/mem before prctl is set
Co-authored-by: Noah Falk <noahfalk@users.noreply.github.com>
Co-authored-by: Noah Falk <noahfalk@users.noreply.github.com>
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Backport of #120000 to release/10.0
/cc @hoyosjs @allantargino
Customer Impact
When
createdumpis spawned by the runtime to create a dump, there is the possibility of a race condition on linux where the child process will try to read from the parent's memory (via/proc/pid/mem) before permission is granted to do so. This fix prevents that race condition from happening on both coreclr and nativeaot.Regression
Testing
Manual
Risk
Low
IMPORTANT: If this backport is for a servicing release, please verify that:
release/X.0-staging, notrelease/X.0.Package authoring no longer needed in .NET 9
IMPORTANT: Starting with .NET 9, you no longer need to edit a NuGet package's csproj to enable building and bump the version.
Keep in mind that we still need package authoring in .NET 8 and older versions.