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runtime: frequent failures with "sys: trap: fault" or "fatal error: fault" on plan9-386-0intro #50137

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bcmills opened this issue Dec 13, 2021 · 3 comments
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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. OS-Plan9
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@bcmills
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bcmills commented Dec 13, 2021

# internal/poll [io.test]
compile 11275: suicide: sys: trap: fault write addr=0x0 pc=0x00040481
FAIL	io [build failed]

These occur in lots of different binaries, and have occurred (but much less frequently) on plan9-arm.
@0intro, could you investigate? This appears to be one of the more frequent failure modes on the plan9-386-0intro builder, and since it appears to affect all Go binaries we cannot easily work around it by skipping one or more tests.

greplogs --dashboard -md -l -e 'suicide: sys: trap: fault'

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@bcmills bcmills added this to the Backlog milestone Dec 13, 2021
@bcmills bcmills added the NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. label Dec 13, 2021
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bcmills commented Jan 6, 2022

This also appears to manifest as fatal error: fault:

greplogs --dashboard -md -l -e 'fatal error: fault\n\[signal sys: trap: fault'

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@bcmills bcmills changed the title runtime: frequent failures with "suicide: sys: trap: fault" on plan9-386-0intro runtime: frequent failures with "suicide: sys: trap: fault" or "signal sys: trap: fault" on plan9-386-0intro Jan 6, 2022
@bcmills bcmills changed the title runtime: frequent failures with "suicide: sys: trap: fault" or "signal sys: trap: fault" on plan9-386-0intro runtime: frequent failures with "sys: trap: fault" or "fatal error: fault" on plan9-386-0intro Jan 28, 2022
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bcmills commented Apr 7, 2022

This is still a frequent failure mode on the plan9-386-0intro builder:

greplogs --dashboard -md -l -e 'fatal error: fault\n\[signal sys: trap: fault' --since=2022-01-07

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gopherbot commented May 26, 2022

Change https://go.dev/cl/408698 mentions this issue: dashboard: add known issues for plan9-386, plan9-386-0intro, and plan9-amd64-0intro

gopherbot pushed a commit to golang/build that referenced this issue May 26, 2022
…9-amd64-0intro

For golang/go#52653.
Updates golang/go#29801.
Updates golang/go#49756.
Updates golang/go#50137.

Change-Id: Ided04da5c1e403c4a194c8c645c5179534a00907
Reviewed-on: https://go-review.googlesource.com/c/build/+/408698
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Alex Rakoczy <alex@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
@gopherbot gopherbot added the compiler/runtime Issues related to the Go compiler and/or runtime. label Jul 7, 2022
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compiler/runtime Issues related to the Go compiler and/or runtime. NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. OS-Plan9
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