go: plugin: net/http.Get fatals with "runtime: unexpected return pc for runtime.goexit called"

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

go version devel +94d7c884c3 Thu Dec 14 14:57:01 2017 +0000 darwin/amd64

Does this issue reproduce with the latest release?

YES

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

GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/qipeng/Library/Caches/go-build"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/qipeng/workspace/go"
GORACE=""
GOROOT="/Users/qipeng/program/go"
GOTMPDIR=""
GOTOOLDIR="/Users/qipeng/program/go/pkg/tool/darwin_amd64"
GCCGO="gccgo"
CC="clang"
CXX="clang++"
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 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/bs/9120vpt14jd7rkhg27kdbj480000gn/T/go-build502747584=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

Call http.Get in plugin. Like: plugin.go

func Init() {
	res, err := http.Get("https://www.google.com")
	if err != nil {
		fmt.Println("Init Error:", err)
	}
	res.Body.Close()
}

main.go

	p, err := plugin.Open("post.so")
	if err != nil {
		panic(err)
	}
	add, err := p.Lookup("Init")
	if err != nil {
		panic(err)
	}
	add.(func())()

DEMO

What did you expect to see?

Get Google Website

What did you see instead?

command-line-arguments
runtime: unexpected return pc for runtime.goexit called from 0x5466c00
fatal error: unknown caller pc

runtime stack:
runtime.throw(0x52e35a4, 0x11)
        /Users/qipeng/program/go/src/runtime/panic.go:616 +0x81
runtime.gentraceback(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xc42008c900, 0x0, 0x0, 0x7fffffff, 0x52f3658, 0x7fff5fbff078, 0x0, ...)
        /Users/qipeng/program/go/src/runtime/traceback.go:286 +0x1a72
runtime.copystack(0xc42008c900, 0x1000, 0x7fff5fbf0001)
        /Users/qipeng/program/go/src/runtime/stack.go:891 +0x26e
runtime.newstack()
        /Users/qipeng/program/go/src/runtime/stack.go:1056 +0x304
runtime.morestack()
        /Users/qipeng/program/go/src/runtime/asm_amd64.s:480 +0x89

goroutine 19 [copystack]:
runtime.newobject(0x52b0280, 0x0)
        /Users/qipeng/program/go/src/runtime/malloc.go:838 +0x51 fp=0xc420052af8 sp=0xc420052af0 pc=0x5012571
net/http.(*Transport).dialConn(0x5466c00, 0x531aec0, 0xc4200aa030, 0xc42014e080, 0x52e4bf8, 0x5, 0xc4200ec1c0, 0x12, 0x0, 0x0, ...)
        /Users/qipeng/program/go/src/net/http/transport.go:1082 +0x55 fp=0xc420052f38 sp=0xc420052af8 pc=0x522a205
net/http.(*Transport).getConn.func4(0x5466c00, 0x531aec0, 0xc4200aa030, 0xc4200a6f00, 0xc420098180)
        /Users/qipeng/program/go/src/net/http/transport.go:943 +0x76 fp=0xc420052fb8 sp=0xc420052f38 pc=0x5233c56
runtime.goexit()
        /Users/qipeng/program/go/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc420052fc0 sp=0xc420052fb8 pc=0x5051951
created by net/http.(*Transport).getConn
        /Users/qipeng/program/go/src/net/http/transport.go:942 +0x361

goroutine 1 [select]:
net/http.(*Transport).getConn(0x5466c00, 0xc4200a6ed0, 0xc42014e080, 0x52e4bf8, 0x5, 0xc4200ec1c0, 0x12, 0x0, 0x0, 0xc4200aa3f0)
        /Users/qipeng/program/go/src/net/http/transport.go:948 +0x552
net/http.(*Transport).RoundTrip(0x5466c00, 0xc420150000, 0x5466c00, 0x0, 0x0)
        /Users/qipeng/program/go/src/net/http/transport.go:400 +0x607
net/http.send(0xc420150000, 0x53154a0, 0x5466c00, 0x0, 0x0, 0x0, 0xc4200aeed8, 0xf8, 0xc420067c70, 0x1)
        /Users/qipeng/program/go/src/net/http/client.go:252 +0x185
net/http.(*Client).send(0x546b260, 0xc420150000, 0x0, 0x0, 0x0, 0xc4200aeed8, 0x0, 0x1, 0x5012558)
        /Users/qipeng/program/go/src/net/http/client.go:176 +0xfa
net/http.(*Client).Do(0x546b260, 0xc420150000, 0x52e4bf8, 0x16, 0x0)
        /Users/qipeng/program/go/src/net/http/client.go:615 +0x298
net/http.(*Client).Get(0x546b260, 0x52e4bf8, 0x16, 0xc4200a6090, 0xc4200ca240, 0xc4200ca240)
        /Users/qipeng/program/go/src/net/http/client.go:396 +0x9d
net/http.Get(0x52e4bf8, 0x16, 0x1, 0xffffffffffffffff, 0xc420067ef8)
        /Users/qipeng/program/go/src/net/http/client.go:370 +0x44
plugin/unnamed-b216a47df41c38c43adcbf9feb7d3876f589ad7d.Init()
        /Users/qipeng/workspace/go/src/github.com/nzlov/testplugin/post.go:9 +0x3a
main.main()
        /Users/qipeng/workspace/go/src/github.com/nzlov/testplugin/main.go:17 +0xb7

goroutine 18 [finalizer wait]:
runtime.gopark(0x52f3860, 0x40d4f48, 0x52e274a, 0xe, 0x14, 0x1)
        /Users/qipeng/program/go/src/runtime/proc.go:291 +0x126
runtime.goparkunlock(0x40d4f48, 0x52e274a, 0xe, 0x14, 0x1)
        /Users/qipeng/program/go/src/runtime/proc.go:297 +0x5e
runtime.runfinq()
        /Users/qipeng/program/go/src/runtime/mfinal.go:175 +0xbe
runtime.goexit()
        /Users/qipeng/program/go/src/runtime/asm_amd64.s:2361 +0x1
exit status 2