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runtime: TestSegv consistently failing on NetBSD #38595

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bcmills opened this issue Apr 22, 2020 · 5 comments
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runtime: TestSegv consistently failing on NetBSD #38595

bcmills opened this issue Apr 22, 2020 · 5 comments
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FrozenDueToAge NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. release-blocker
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Go1.15

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@bcmills
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bcmills commented Apr 22, 2020

The TestSegv function added in CL 228900 is failing consistently on the NetBSD 9.0 builders:

--- FAIL: TestSegv (0.00s)
    --- FAIL: TestSegv/Segv (0.01s)
        crash_cgo_test.go:569: 
        crash_cgo_test.go:571: expected crash from signal
    --- FAIL: TestSegv/SegvInCgo (0.01s)
        crash_cgo_test.go:569: 
        crash_cgo_test.go:571: expected crash from signal
…
FAIL
FAIL	runtime	41.529s

2020-04-22T00:01:14-e5bd6e1/netbsd-386-9_0
2020-04-22T00:01:14-e5bd6e1/netbsd-amd64-9_0

It's not clear to me whether the problem is in the test, the runtime, or the NetBSD kernel.

CC @ianlancetaylor @aclements
@bcmills bcmills added OS-NetBSD NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. release-blocker labels Apr 22, 2020
@bcmills bcmills added this to the Go1.15 milestone Apr 22, 2020
@gopherbot
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Change https://golang.org/cl/229484 mentions this issue: runtime: sleep in TestSegv program to let signal be delivered

@josharian
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Doesn't look like this is NetBSD-only. Looking at build.golang.org right now I see

darwin/amd64: https://build.golang.org/log/bf1f5e4990da13a459eec28e6eb3741ea253a084

linux/386: https://build.golang.org/log/bb4f8f764caf625ad4f339399c0fe0e65fdb6986

@ianlancetaylor
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https://golang.org/cl/229484 should fix this, waiting for review by @bcmills .

@bcmills
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bcmills commented Apr 24, 2020

Sorry, wasn't aware that it was ready for another pass. (There are unresolved comments on PS1.)

@ianlancetaylor
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Sorry, I must have forgotten to hit send.

@josharian josharian mentioned this issue Apr 27, 2020
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xujianhai666 pushed a commit to xujianhai666/go-1 that referenced this issue May 21, 2020
@ianlancetaylor @xujianhai666
runtime: sleep in TestSegv program to let signal be delivered
b049bce 
Since we're sleeping rather than waiting for the goroutines,
let the goroutines run forever.

Fixes golang#38595

Change-Id: I4cd611fd7565f6e8d91e50c9273d91c514825314
Reviewed-on: https://go-review.googlesource.com/c/go/+/229484
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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