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x/sys/cpu: cpu_linux.go:31 /proc/self/auxv: permission denied on android/arm #30413

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rayvbr opened this issue Feb 26, 2019 · 4 comments
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x/sys/cpu: cpu_linux.go:31 /proc/self/auxv: permission denied on android/arm #30413

rayvbr opened this issue Feb 26, 2019 · 4 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. OS-Android
Milestone
Unreleased

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@rayvbr
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rayvbr commented Feb 26, 2019 •
edited

What version of Go are you using (go version)?

Go 1.12

Does this issue reproduce with the latest release?

Yes

What operating system and processor architecture are you using (go env)?

Using 'gomobile bind' to compile to android/arm

What did you do?

Compile arbitrary library (hello world) to android/arm using 'gomobile bind' (Android NDK 19b). Include in Android Java app.

Note: used git head of golang.org/x/sys (golang/sys@cc5685c)

What did you expect to see?

Running application

What did you see instead?

2019-02-26 19:12:32.502 8053-0/? E/Go: panic: read proc auxv failed: open /proc/self/auxv: permission denied
2019-02-26 19:12:32.502 8053-8094/? E/GoLog: panic: read proc auxv failed: open /proc/self/auxv: permission denied
2019-02-26 19:12:32.502 8053-0/? E/Go: goroutine 1 [running]:
2019-02-26 19:12:32.502 8053-0/? E/Go: <redacted>vendor/golang.org/x/sys/cpu.init.0()
2019-02-26 19:12:32.502 8053-0/? E/Go: 	<redacted>/vendor/golang.org/x/sys/cpu/cpu_linux.go:31 +0x1ac
2019-02-26 19:12:32.503 8053-8090/? E/CRASH: signal 6 (SIGABRT), code -6 (?), fault addr --------
2019-02-26 19:12:32.503 8053-8090/? E/CRASH: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
@gopherbot gopherbot added this to the Unreleased milestone Feb 26, 2019
@rayvbr
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rayvbr commented Feb 26, 2019 •
edited

Go 1.11.4 with golang.org/x/sys golang/sys@4d1cda0 works fine

@rayvbr
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rayvbr commented Feb 26, 2019 •
edited

Possibly related to #9229

Note that not all chipsets seem affected. Crash above was on Snapdragon 821. Exynos 8890 seems unaffected

@tklauser tklauser added OS-Android NeedsInvestigation Someone must examine and confirm this is a valid issue and not a duplicate of an existing one. labels Feb 27, 2019
@gopherbot
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Change https://golang.org/cl/164057 mentions this issue: cpu: don't panic on error reading /proc/self/auxv

@rayvbr
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rayvbr commented Feb 28, 2019

Problem resolved! Thanks guys!

@golang golang locked and limited conversation to collaborators Feb 28, 2020
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