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os: spurious SIGCHILD on running child process [1.23 backport] #71848

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gopherbot opened this issue Feb 20, 2025 · 3 comments
Open

os: spurious SIGCHILD on running child process [1.23 backport] #71848

gopherbot opened this issue Feb 20, 2025 · 3 comments
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CherryPickCandidate Used during the release process for point releases
Milestone
Go1.23.7

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@gopherbot
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@ianlancetaylor requested issue #71828 to be considered for backport to the next 1.23 minor release.

@gopherbot Please open backport issues.

This bug causes a spurious SIGCHLD signal the first time a process is executed when running on Linux systems. This is a regression from past behavior and from behavior on non-Linux systems. The patch is small and safe.
@gopherbot gopherbot added the CherryPickCandidate Used during the release process for point releases label Feb 20, 2025
@gopherbot gopherbot mentioned this issue Feb 20, 2025
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@gopherbot gopherbot added this to the Go1.23.7 milestone Feb 20, 2025
@gopherbot
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Change https://go.dev/cl/651055 mentions this issue: [release-branch.go1.23] syscall: don't send child signal when testing pidfd

@gopherbot
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Change https://go.dev/cl/651495 mentions this issue: [release-branch.go1.23] runtime: use WCLONE when waiting on pidfd test child

@prattmic
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https://go.dev/cl/651055 contains a bug which is fixed by https://go.dev/cl/651495, so both must be cherry-picked together.

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@prattmic @gopherbot