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os/signal: test timeout (entire VM hangs) on netbsd/386 (7.0.1 GENERIC) #16511

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minux opened this issue Jul 27, 2016 · 11 comments
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os/signal: test timeout (entire VM hangs) on netbsd/386 (7.0.1 GENERIC) #16511

minux opened this issue Jul 27, 2016 · 11 comments
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FrozenDueToAge NeedsInvestigation OS-NetBSD
Milestone
Go1.10

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@minux
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@minux minux commented Jul 27, 2016 •
edited

I upgraded the netbsd/386 builder to the latest 7.0.1 release,
and suddenly a lot of the builds fail at os/signal.

E.g.
timeout:
https://build.golang.org/log/f4c637234824467172beb3c7fdaf61fbd403d55c
illegal instruction:
https://build.golang.org/log/d1841610bb2fd982671f4db6bd8d1836a0a2d735
(this log also shows a failure in runtime/pprof, which might be interesting
as well.)
SIGTRAP:
https://build.golang.org/log/7275a54c64635553b418a15a58475698cf772f64

Repeated run of os/signal tests showed that it's failing in TestStress.

/cc @ianlancetaylor any ideas?
@minux minux added this to the Go1.8Early milestone Jul 27, 2016
@bradfitz
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@bradfitz bradfitz commented Jul 27, 2016

Ian is on vacation.

@bradfitz
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@bradfitz bradfitz commented Jul 27, 2016

/cc @bsiegert @mdempsky

@bsiegert
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@bsiegert bsiegert commented Jul 27, 2016

Is that the same as #10027?

@minux
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@minux minux commented Jul 27, 2016

@minux
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@minux minux commented Jul 27, 2016

@ianlancetaylor
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@ianlancetaylor ianlancetaylor commented Jul 28, 2016

See if you can get the strace output (or dtruss, or whatever it is called on NetBSD) of signal.test -test.short -test.run=TestStress.

Sounds like something is going wrong if a signal is received while handling that signal. Or, it's a problem with the alternate signal stack.

@quentinmit quentinmit added this to the Go1.8Maybe milestone Sep 26, 2016
@quentinmit quentinmit removed this from the Go1.8Early milestone Sep 26, 2016
@rsc
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@rsc rsc commented Oct 20, 2016

If the entire builder VM freezes then it's probably not Go's fault. Sounds like a kernel problem.

@rsc rsc changed the title os/signal: test timeout on netbsd/386 (7.0.1 GENERIC) os/signal: test timeout (entire VM hangs) on netbsd/386 (7.0.1 GENERIC) Nov 2, 2016
@rsc rsc added this to the Go1.9 milestone Nov 11, 2016
@rsc rsc removed this from the Go1.8Maybe milestone Nov 11, 2016
@wenheping
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@wenheping wenheping commented Feb 18, 2017

The same test error of Go-1.8 On NetBSD/amd64(7.0.1 GENERIC).

@bsiegert bsiegert mentioned this issue Mar 15, 2017
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@gopherbot gopherbot closed this Mar 21, 2017
@bradfitz bradfitz reopened this Mar 21, 2017
@bradfitz bradfitz added this to the Go1.10 milestone Jun 28, 2017
@bradfitz bradfitz removed this from the Go1.9 milestone Jun 28, 2017
@gopherbot
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@gopherbot gopherbot commented Jun 28, 2017

CL https://golang.org/cl/47036 mentions this issue.

gopherbot pushed a commit that referenced this issue Jun 28, 2017
@bradfitz
doc: document the state of NetBSD in the Go 1.9 release notes
3200207 
Updates #20836
Updates #19339
Updates #19652
Updates #20835
Updates #16511
Updates #10166
Updates #8574

Change-Id: If9a7f560489f1a8d628dafab227925bd8989326e
Reviewed-on: https://go-review.googlesource.com/47036
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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@gopherbot gopherbot commented Nov 29, 2017

Change https://golang.org/cl/80515 mentions this issue: runtime: fix sysctl calling convention on netbsd/386

gopherbot pushed a commit that referenced this issue Nov 29, 2017
@bradfitz
runtime: fix sysctl calling convention on netbsd/386
70ee9b4 
Thanks to coypoop for noticing at:

  #22914 (comment)

FreeBSD/386 and NetBSD/386 diverged between Go 1.4 and Go 1.5 when
Russ sent https://golang.org/cl/135830043 (git rev 25f6b02)
to change the calling convention of the C compilers to match Go.
But netbsd wasn't updated.

Tested on a NetBSD/386 VM, since the builders aren't back up yet (due
to this bug)

Fixes #22914
Updates #19339
Updates #20852
Updates #16511

Change-Id: Id76ebe8f29bcc85e39b1c11090639d906cd6cf04
Reviewed-on: https://go-review.googlesource.com/80515
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
@bradfitz
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@bradfitz bradfitz commented Nov 29, 2017

This is fixed by requiring NetBSD 8-BETA+.

@bradfitz bradfitz closed this Nov 29, 2017
@bradfitz bradfitz mentioned this issue Dec 2, 2017
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