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runtime: crash on mips64 with sigpanic in C code #23641

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aclements opened this issue Jan 31, 2018 · 1 comment
Closed

runtime: crash on mips64 with sigpanic in C code #23641

aclements opened this issue Jan 31, 2018 · 1 comment
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Go1.10

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

tip (ebe38b8)

Does this issue reproduce with the latest release?

It should, though it's difficult to arrange so I didn't test it.

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

The linux-mips64 builder.

GOARCH="mips64"
GOBIN=""
GOCACHE="/mips/proj/build-compiler/upstream-testing/go-lang/.cache/go-build"
GOEXE=""
GOHOSTARCH="mips64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/mips/proj/build-compiler/upstream-testing/go-lang/go"
GORACE=""
GOROOT="/data/mips64/go"
GOTMPDIR=""
GOTOOLDIR="/data/mips64/go/pkg/tool/linux_mips64"
GCCGO="gccgo"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -mabi=64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build106984263=/tmp/go-build -gno-record-gcc-switches"

What did you do?

Commit ebe38b8 added a test that causes a SIGSEGV in C code that turns into an injected sigpanic call. This revealed a bug on mips64 that causes sigpanic itself to SIGSEGV the first time it references a global when invoked from C code: https://build.golang.org/log/352d06e4db037c570ae5a99aba8a6fdd175b04ff
@aclements aclements added this to the Go1.10 milestone Jan 31, 2018
@aclements aclements self-assigned this Jan 31, 2018
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Change https://golang.org/cl/91156 mentions this issue: runtime: restore RSB for sigpanic call on mips64x

@golang golang locked and limited conversation to collaborators Jan 31, 2019
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