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

Created on 27 Jan 2018  ·  1Comment  ·  Source: golang/go

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

go version go1.10rc1 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="/Users/juhwany/go_workspace/bin"
GOCACHE="/Users/juhwany/Library/Caches/go-build"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH="/Users/juhwany/go_workspace"
GORACE=""
GOROOT="/usr/local/go"
GOTMPDIR=""
GOTOOLDIR="/usr/local/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/mk/2tyywdsn0jq6l0vl8094tss80000gp/T/go-build778249571=/tmp/go-build -gno-record-gcc-switches -fno-common"

What did you do?

If it calls http.Get method in plugin. It occurs fatal error like runtime: unexpected return pc for runtime.goexit called from 0x4460ce0

You can reproduce the issue using this demo (https://github.com/nzlov/testplugin)

Reproduction steps

  1. build plugin
    go build --buildmode=plugin post.go

  1. build main application
    go build main.go

  2. run
    ./main

On linux, it works well. It only happens on darwin/amd64.

What did you expect to see?

Run without fatal error

What did you see instead?

runtime: unexpected return pc for runtime.goexit called from 0x4460ce0
stack: frame={sp:0xc420050fb8, fp:0xc420050fc0} stack=[0xc420050000,0xc420051000)
000000c420050eb8:  0000000000000000  0000000000000000
000000c420050ec8:  0000000000000000  0000000000000000
000000c420050ed8:  0000000000000000  0000000000000000
000000c420050ee8:  0000000000000000  0000000000000000
000000c420050ef8:  0000000000000000  0000000000000000
000000c420050f08:  0000000000000000  0000000000000000
000000c420050f18:  0000000000000000  0000000000000000
000000c420050f28:  000000c42003efa8  0000000005378b96 <net/http.(*Transport).getConn.func4+118>
000000c420050f38:  0000000004460ce0  00000000043154e0
000000c420050f48:  000000c42009e020  0000000000000000
000000c420050f58:  0000000005429ff7  0000000000000005
000000c420050f68:  000000c4200ba1c0  0000000000000012
000000c420050f78:  0000000000000000  0000000000000000
000000c420050f88:  0000000000000000  0000000000000000
000000c420050f98:  0000000000000000  0000000000000000
000000c420050fa8:  0000000000000000  0000000005192201 <runtime.goexit+1>
000000c420050fb8: <0000000004460ce0 >00000000043154e0
000000c420050fc8:  000000c42009e020  000000c420098f00
000000c420050fd8:  000000c42008a180  0000000000000000
000000c420050fe8:  0000000000000000  0000000000000000
000000c420050ff8:  0000000000000000
fatal error: unknown caller pc

runtime stack:
runtime: unexpected return pc for runtime.morestack called from 0x0
stack: frame={sp:0x7fff5fbff978, fp:0x7fff5fbff980} stack=[0x7fff5fb80520,0x7fff5fbff9a0)
00007fff5fbff878:  0000000004465be0  00007fff5fbff8c8
00007fff5fbff888:  000000000515653c <runtime.(*mcentral).grow+236>  000000c41fff4dff
00007fff5fbff898:  000000c400000000  0000000004591b60
00007fff5fbff8a8:  0000000004591b60  0000000000000011
00007fff5fbff8b8:  000000c420076900  000000c42003eaf8
00007fff5fbff8c8:  000000000536ef75 <net/http.(*Transport).dialConn+85>  000000c420076900
00007fff5fbff8d8:  0000000000000000  0000000000000000
00007fff5fbff8e8:  0000000000000000  0000000000000000
00007fff5fbff8f8:  000000c420076900  000000c420076901
00007fff5fbff908:  0000000004465b01  00007fff5fbff930
00007fff5fbff918:  0000000005179555 <runtime.selparkcommit+133>  0000000004465be0
00007fff5fbff928:  000000c4201241e0  00007fff5fbff960
00007fff5fbff938:  00000000051724eb <runtime.park_m+187>  000000c420000180
00007fff5fbff948:  0000000000000000  000000000458a601
00007fff5fbff958:  0000000004465be0  000000c420065328
00007fff5fbff968:  000000c42003ef28  000000000518f859 <runtime.morestack+137>
00007fff5fbff978: <0000000000000000 >00007fff5fbff9d8
00007fff5fbff988:  00000000040549b3 <runtime.rt0_go+515>  00007fff5fbff9d8
00007fff5fbff998:  00000000040549ba <runtime.rt0_go+522>
runtime.throw(0x542898e, 0x11)
    /usr/local/go/src/runtime/panic.go:619 +0x81
runtime.gentraceback(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xc420076900, 0x0, 0x0, 0x7fffffff, 0x5438a88, 0x7fff5fbff6b8, 0x0, ...)
    /usr/local/go/src/runtime/traceback.go:292 +0x1bb2
runtime.copystack(0xc420076900, 0x1000, 0x7fff5fbff801)
    /usr/local/go/src/runtime/stack.go:891 +0x26e
runtime.newstack()
    /usr/local/go/src/runtime/stack.go:1063 +0x310
runtime: unexpected return pc for runtime.morestack called from 0x0
stack: frame={sp:0x7fff5fbff978, fp:0x7fff5fbff980} stack=[0x7fff5fb80520,0x7fff5fbff9a0)
00007fff5fbff878:  0000000004465be0  00007fff5fbff8c8
00007fff5fbff888:  000000000515653c <runtime.(*mcentral).grow+236>  000000c41fff4dff
00007fff5fbff898:  000000c400000000  0000000004591b60
00007fff5fbff8a8:  0000000004591b60  0000000000000011
00007fff5fbff8b8:  000000c420076900  000000c42003eaf8
00007fff5fbff8c8:  000000000536ef75 <net/http.(*Transport).dialConn+85>  000000c420076900
00007fff5fbff8d8:  0000000000000000  0000000000000000
00007fff5fbff8e8:  0000000000000000  0000000000000000
00007fff5fbff8f8:  000000c420076900  000000c420076901
00007fff5fbff908:  0000000004465b01  00007fff5fbff930
00007fff5fbff918:  0000000005179555 <runtime.selparkcommit+133>  0000000004465be0
00007fff5fbff928:  000000c4201241e0  00007fff5fbff960
00007fff5fbff938:  00000000051724eb <runtime.park_m+187>  000000c420000180
00007fff5fbff948:  0000000000000000  000000000458a601
00007fff5fbff958:  0000000004465be0  000000c420065328
00007fff5fbff968:  000000c42003ef28  000000000518f859 <runtime.morestack+137>
00007fff5fbff978: <0000000000000000 >00007fff5fbff9d8
00007fff5fbff988:  00000000040549b3 <runtime.rt0_go+515>  00007fff5fbff9d8
00007fff5fbff998:  00000000040549ba <runtime.rt0_go+522>
runtime.morestack()
    /usr/local/go/src/runtime/asm_amd64.s:480 +0x89

goroutine 19 [copystack]:
runtime.newobject(0x42aba80, 0x0)
    /usr/local/go/src/runtime/malloc.go:838 +0x51 fp=0xc420050af8 sp=0xc420050af0 pc=0x5152411
net/http.(*Transport).dialConn(0x4460ce0, 0x43154e0, 0xc42009e020, 0x0, 0x5429ff7, 0x5, 0xc4200ba1c0, 0x12, 0x0, 0x0, ...)
    /usr/local/go/src/net/http/transport.go:1096 +0x55 fp=0xc420050f38 sp=0xc420050af8 pc=0x536ef75
net/http.(*Transport).getConn.func4(0x4460ce0, 0x43154e0, 0xc42009e020, 0xc420098f00, 0xc42008a180)
    /usr/local/go/src/net/http/transport.go:957 +0x76 fp=0xc420050fb8 sp=0xc420050f38 pc=0x5378b96
runtime: unexpected return pc for runtime.goexit called from 0x4460ce0
stack: frame={sp:0xc420050fb8, fp:0xc420050fc0} stack=[0xc420050000,0xc420051000)
000000c420050eb8:  0000000000000000  0000000000000000
000000c420050ec8:  0000000000000000  0000000000000000
000000c420050ed8:  0000000000000000  0000000000000000
000000c420050ee8:  0000000000000000  0000000000000000
000000c420050ef8:  0000000000000000  0000000000000000
000000c420050f08:  0000000000000000  0000000000000000
000000c420050f18:  0000000000000000  0000000000000000
000000c420050f28:  000000c42003efa8  0000000005378b96 <net/http.(*Transport).getConn.func4+118>
000000c420050f38:  0000000004460ce0  00000000043154e0
000000c420050f48:  000000c42009e020  0000000000000000
000000c420050f58:  0000000005429ff7  0000000000000005
000000c420050f68:  000000c4200ba1c0  0000000000000012
000000c420050f78:  0000000000000000  0000000000000000
000000c420050f88:  0000000000000000  0000000000000000
000000c420050f98:  0000000000000000  0000000000000000
000000c420050fa8:  0000000000000000  0000000005192201 <runtime.goexit+1>
000000c420050fb8: <0000000004460ce0 >00000000043154e0
000000c420050fc8:  000000c42009e020  000000c420098f00
000000c420050fd8:  000000c42008a180  0000000000000000
000000c420050fe8:  0000000000000000  0000000000000000
000000c420050ff8:  0000000000000000
runtime.goexit()
    /usr/local/go/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc420050fc0 sp=0xc420050fb8 pc=0x5192201
created by net/http.(*Transport).getConn
    /usr/local/go/src/net/http/transport.go:956 +0x36d

goroutine 1 [select]:
net/http.(*Transport).getConn(0x4460ce0, 0xc420098ed0, 0x0, 0x5429ff7, 0x5, 0xc4200ba1c0, 0x12, 0x0, 0x0, 0x4288e00)
    /usr/local/go/src/net/http/transport.go:962 +0x55e
net/http.(*Transport).RoundTrip(0x4460ce0, 0xc420162000, 0x4460ce0, 0x0, 0x0)
    /usr/local/go/src/net/http/transport.go:409 +0x62e
net/http.send(0xc420162000, 0x545a980, 0x4460ce0, 0x0, 0x0, 0x0, 0xc42014a9d8, 0xf8, 0xc420065c70, 0x1)
    /usr/local/go/src/net/http/client.go:252 +0x185
net/http.(*Client).send(0x55afbc0, 0xc420162000, 0x0, 0x0, 0x0, 0xc42014a9d8, 0x0, 0x1, 0x51523f8)
    /usr/local/go/src/net/http/client.go:176 +0xfa
net/http.(*Client).Do(0x55afbc0, 0xc420162000, 0x5429ff7, 0x16, 0x0)
    /usr/local/go/src/net/http/client.go:615 +0x298
net/http.(*Client).Get(0x55afbc0, 0x5429ff7, 0x16, 0xc420098cf0, 0xc4200bcfc0, 0xc4200bcfc0)
    /usr/local/go/src/net/http/client.go:396 +0x9d
net/http.Get(0x5429ff7, 0x16, 0x1, 0xffffffffffffffff, 0xc420065ef8)
    /usr/local/go/src/net/http/client.go:370 +0x44
plugin/unnamed-71262ac8d344fb916e3c94d62f776ef5713970c9.Init()
    /Users/juhwany/go_workspace/src/testplugin/post.go:9 +0x3a
main.main()
    /Users/juhwany/go_workspace/src/testplugin/main.go:17 +0xb7
FrozenDueToAge OS-Darwin
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picture juhwany
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Most helpful comment

@juhwany thank you for reporting this issue! It is a duplicate of https://github.com/golang/go/issues/23133 as you've already discovered, thanks for posting your feedback on this issue. I've retitled this issue but I'll also go ahead and retitle the other one too as well as close this one.

picture odeke-em on 27 Jan 2018
👍3

>All comments

@juhwany thank you for reporting this issue! It is a duplicate of https://github.com/golang/go/issues/23133 as you've already discovered, thanks for posting your feedback on this issue. I've retitled this issue but I'll also go ahead and retitle the other one too as well as close this one.

odeke-em picture odeke-em on 27 Jan 2018
👍3
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