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plugin: opening plugin built with -linkshared flag results in stackoverflow #19852

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vimalk78 opened this issue Apr 5, 2017 · 3 comments
Closed

plugin: opening plugin built with -linkshared flag results in stackoverflow #19852

vimalk78 opened this issue Apr 5, 2017 · 3 comments
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@vimalk78
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vimalk78 commented Apr 5, 2017 •
edited

Please answer these questions before submitting your issue. Thanks!

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

$ go version
go version go1.8 linux/amd64

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

$ go env
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/vimal/gowork"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build731397511=/tmp/go-build -gno-record-gcc-switches"
CXX="g++"
CGO_ENABLED="1"
PKG_CONFIG="pkg-config"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"

What did you do?

If possible, provide a recipe for reproducing the error.
A complete runnable program is good.
A link on play.golang.org is best.

executable program :

package main

import (
    "fmt"
    "os"
    "plugin"
    "runtime/debug"
)

func main() {
    debug.SetMaxStack(100)
    pn := os.Args[1]
    _, err := plugin.Open(pn)
    if err != nil {
        fmt.Printf("go to hell %s", err)
        return
    }
}

exe built with :
go build -v -a

plugin :

package main

import (
    "C"
    "io/ioutil"

    yaml "gopkg.in/yaml.v2"
)

func TEST(file string) error {
    b, err := ioutil.ReadFile(file)
    if err != nil {
        panic(err)
    }
    var testObj interface{}
    err = yaml.Unmarshal(b, &testObj)
    if err != nil {
        panic(err)
    }
    return nil
}

plugin built with :
go build -v -a -buildmode=plugin -linkshared

What did you expect to see?

plugin loaded, and executed

What did you see instead?

stackoverflow error

runtime: goroutine stack exceeds 100-byte limit
fatal error: stack overflow

runtime stack:
runtime.throw(0x533ed6, 0xe)
    /usr/local/go/src/runtime/panic.go:596 +0x95
runtime.newstack(0x0)
    /usr/local/go/src/runtime/stack.go:1089 +0x3f2
runtime.morestack()
    /usr/local/go/src/runtime/asm_amd64.s:398 +0x86

goroutine 1 [running]:
runtime.(*_type).nameOff(0x7fd5cbe4b720, 0x1ae50, 0x0)
    /usr/local/go/src/runtime/type.go:198 +0x4c fp=0xc42004e358 sp=0xc42004e350
runtime.(*_type).string(0x7fd5cbe4b720, 0x0, 0x0)
    /usr/local/go/src/runtime/type.go:46 +0x36 fp=0xc42004e380 sp=0xc42004e358
runtime.typesEqual(0x7fd5cbe4b720, 0x513e20, 0x50c2d7)
    /usr/local/go/src/runtime/type.go:543 +0x73 fp=0xc42004e4a8 sp=0xc42004e380
runtime.typesEqual(0x7fd5cbe55580, 0x5196c0, 0x0)
    /usr/local/go/src/runtime/type.go:580 +0x229 fp=0xc42004e5d0 sp=0xc42004e4a8
runtime.typesEqual(0x7fd5cbe5be20, 0x51ece0, 0x5099df)
    /usr/local/go/src/runtime/type.go:647 +0xc0a fp=0xc42004e6f8 sp=0xc42004e5d0
runtime.typesEqual(0x7fd5cbe45aa0, 0x50ecc0, 0x0)
    /usr/local/go/src/runtime/type.go:627 +0x9c5 fp=0xc42004e820 sp=0xc42004e6f8
runtime.typesEqual(0x7fd5cbe6b820, 0x52ab80, 0x50556b)
    /usr/local/go/src/runtime/type.go:647 +0xc0a fp=0xc42004e948 sp=0xc42004e820
runtime.typesEqual(0x7fd5cbe6e3c0, 0x52d480, 0x0)
    /usr/local/go/src/runtime/type.go:627 +0x9c5 fp=0xc42004ea70 sp=0xc42004e948
runtime.typesEqual(0x7fd5cbe5c500, 0x51eb00, 0x50556b)
    /usr/local/go/src/runtime/type.go:647 +0xc0a fp=0xc42004eb98 sp=0xc42004ea70
runtime.typesEqual(0x7fd5cbe6e120, 0x52d1e0, 0x50aa98)
    /usr/local/go/src/runtime/type.go:627 +0x9c5 fp=0xc42004ecc0 sp=0xc42004eb98
runtime.typesEqual(0x7fd5cbe52340, 0x518480, 0x0)
    /usr/local/go/src/runtime/type.go:567 +0x951 fp=0xc42004ede8 sp=0xc42004ecc0
runtime.typesEqual(0x7fd5cbe62380, 0x523080, 0x50c5b7)
    /usr/local/go/src/runtime/type.go:647 +0xc0a fp=0xc42004ef10 sp=0xc42004ede8
runtime.typesEqual(0x7fd5cbe46a20, 0x50e300, 0x0)
    /usr/local/go/src/runtime/type.go:627 +0x9c5 fp=0xc42004f038 sp=0xc42004ef10
runtime.typesEqual(0x7fd5cbe62380, 0x523080, 0x50c5b7)
    /usr/local/go/src/runtime/type.go:647 +0xc0a fp=0xc42004f160 sp=0xc42004f038
runtime.typesEqual(0x7fd5cbe46a20, 0x50e300, 0x0)
    /usr/local/go/src/runtime/type.go:627 +0x9c5 fp=0xc42004f288 sp=0xc42004f160
runtime.typesEqual(0x7fd5cbe62380, 0x523080, 0x50c5b7)
    /usr/local/go/src/runtime/type.go:647 +0xc0a fp=0xc42004f3b0 sp=0xc42004f288
runtime.typesEqual(0x7fd5cbe46a20, 0x50e300, 0x0)
    /usr/local/go/src/runtime/type.go:627 +0x9c5 fp=0xc42004f4d8 sp=0xc42004f3b0
runtime.typesEqual(0x7fd5cbe62380, 0x523080, 0x50c5b7)
    /usr/local/go/src/runtime/type.go:647 +0xc0a fp=0xc42004f600 sp=0xc42004f4d8
runtime.typesEqual(0x7fd5cbe46a20, 0x50e300, 0x0)
    /usr/local/go/src/runtime/type.go:627 +0x9c5 fp=0xc42004f728 sp=0xc42004f600
runtime.typesEqual(0x7fd5cbe62380, 0x523080, 0x50c5b7)
    /usr/local/go/src/runtime/type.go:647 +0xc0a fp=0xc42004f850 sp=0xc42004f728
runtime.typesEqual(0x7fd5cbe46a20, 0x50e300, 0xc4bd46f0ff)
    /usr/local/go/src/runtime/type.go:627 +0x9c5 fp=0xc42004f978 sp=0xc42004f850
runtime.typelinksinit()
    /usr/local/go/src/runtime/type.go:510 +0x432 fp=0xc42004fb80 sp=0xc42004f978
plugin.lastmoduleinit(0x2574400, 0xc42000e028, 0x25754c0, 0x72, 0x7b7f60)
    /usr/local/go/src/runtime/plugin.go:52 +0x2f9 fp=0xc42004fcb0 sp=0xc42004fb80
plugin.open(0x7fff73cffca2, 0x39, 0x0, 0x0, 0x0)
    /usr/local/go/src/plugin/plugin_dlopen.go:72 +0x25d fp=0xc42004fef0 sp=0xc42004fcb0
plugin.Open(0x7fff73cffca2, 0x39, 0x5016a5, 0x0, 0x0)
    /usr/local/go/src/plugin/plugin.go:30 +0x35 fp=0xc42004ff28 sp=0xc42004fef0
main.main()
    /home/vimal/gowork/src/rnd-isourceb.huawei.com/v70420/tests/plugininvoker/main.go:13 +0x5c fp=0xc42004ff88 sp=0xc42004ff28
runtime.main()
    /usr/local/go/src/runtime/proc.go:185 +0x20a fp=0xc42004ffe0 sp=0xc42004ff88
runtime.goexit()
    /usr/local/go/src/runtime/asm_amd64.s:2197 +0x1 fp=0xc42004ffe8 sp=0xc42004ffe0

goroutine 17 [syscall, locked to thread]:
runtime.goexit()
    /usr/local/go/src/runtime/asm_amd64.s:2197 +0x1

I have limited the stack size to be able to print the beginning of stack.

otherwise the error is:
runtime: goroutine stack exceeds 1000000000-byte limit
@ianlancetaylor
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CC @crawshaw @mwhudson

@vimalk78
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vimalk78 commented Apr 5, 2017

possible duplicate of #19258

@tzneal
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tzneal commented Apr 17, 2017

Duplicate, verified fixed in tip.

@tzneal tzneal closed this as completed Apr 17, 2017
@golang golang locked and limited conversation to collaborators Apr 17, 2018
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@tzneal @ianlancetaylor @vimalk78 @gopherbot