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misc/cgo/testsanitizers: occasional hangs in TestTSAN/tsan12 [1.17 backport] #53042

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gopherbot opened this issue May 24, 2022 · 3 comments
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misc/cgo/testsanitizers: occasional hangs in TestTSAN/tsan12 [1.17 backport] #53042

gopherbot opened this issue May 24, 2022 · 3 comments
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CherryPickApproved Used during the release process for point releases FrozenDueToAge Testing An issue that has been verified to require only test changes, not just a test failure.
Milestone
Go1.17.11

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@gopherbot
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@bcmills requested issue #52998 to be considered for backport to the next 1.17 minor release.

@gopherbot, please backport to Go 1.18 and 1.17. This is a test-only fix for a test that occasionally deadlocks, which can cause TryBot stalls and spurious failures on release branches.
@gopherbot gopherbot added the CherryPickCandidate Used during the release process for point releases label May 24, 2022
@gopherbot gopherbot mentioned this issue May 24, 2022
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@gopherbot gopherbot added this to the Go1.17.11 milestone May 24, 2022
@gopherbot
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Change https://go.dev/cl/408115 mentions this issue: [release-branch.go1.17] misc/cgo/testsanitizers: use buffered channel in tsan12.go

@bcmills bcmills added the Testing An issue that has been verified to require only test changes, not just a test failure. label May 24, 2022
@toothrot toothrot added the CherryPickApproved Used during the release process for point releases label May 25, 2022
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Approved. Low risk, trivial change that fixes testing issues.

@gopherbot gopherbot removed the CherryPickCandidate Used during the release process for point releases label May 25, 2022
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Closed by merging 65701ad to release-branch.go1.17.

gopherbot pushed a commit that referenced this issue May 25, 2022
@cherrymui @toothrot
[release-branch.go1.17] misc/cgo/testsanitizers: use buffered channel…
65701ad 
… in tsan12.go

os/signal.Notify requires that "the caller must ensure that c has
sufficient buffer space to keep up with the expected signal rate"
as it does a nonblocking send when it receives a signal. The test
currently using a unbuffered channel, which means it may miss the
signal if the signal arrives before the channel receive operation.

Fixes #53042.
Updates #52998.

Change-Id: Icdcab9396d735506480ef880fb45a4669fa7cc8f
Reviewed-on: https://go-review.googlesource.com/c/go/+/407888
Reviewed-by: Ian Lance Taylor <[email protected]>
Reviewed-by: Bryan Mills <[email protected]>
Run-TryBot: Cherry Mui <[email protected]>
Reviewed-by: Cuong Manh Le <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
(cherry picked from commit 62e1302)
Reviewed-on: https://go-review.googlesource.com/c/go/+/408115
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CherryPickApproved Used during the release process for point releases FrozenDueToAge Testing An issue that has been verified to require only test changes, not just a test failure.
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