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runtime: fatal error: Go pointer stored into non-Go memory #23435

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sternix opened this Issue Jan 12, 2018 · 2 comments

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@sternix

sternix commented Jan 12, 2018

Please answer these questions before submitting your issue. Thanks!

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

go version go1.10beta2 freebsd/amd64

Does this issue reproduce with the latest release?

i set GODEBUG env variable to
GODEBUG=cgocheck=2
it works with 1.9.2 without error
but 1.10beta2 gives the error below
if i unset GODEBUG variable it works without error

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

$ go env
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/sternix/.cache/go-build"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="freebsd"
GOOS="freebsd"
GOPATH="/home/sternix/go"
GORACE=""
GOROOT="/opt/go/1_10b2/go"
GOTMPDIR=""
GOTOOLDIR="/opt/go/1_10b2/go/pkg/tool/freebsd_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=/tmp/go-build169993598=/tmp/go-build -gno-record-gcc-switches"

What did you do?

$ go get -u golang.org/x/crypto/bcrypt

What did you expect to see?

Install without errors

What did you see instead?

$ go get -u -v golang.org/x/crypto/bcrypt 
Fetching https://golang.org/x/crypto/bcrypt?go-get=1
write of Go pointer 0xafb1e0 to non-Go memory 0x800ba3028
fatal error: Go pointer stored into non-Go memory

runtime stack:
runtime.throw(0x8aa71a, 0x24)
        /usr/local/go/src/runtime/panic.go:616 +0x81
runtime.cgoCheckWriteBarrier.func1()
        /usr/local/go/src/runtime/cgocheck.go:48 +0xa9
runtime.systemstack(0x0)
        /usr/local/go/src/runtime/asm_amd64.s:409 +0x79
runtime.mstart()
        /usr/local/go/src/runtime/proc.go:1170

goroutine 22 [running]:
runtime.systemstack_switch()
        /usr/local/go/src/runtime/asm_amd64.s:363 fp=0xc42004d9f0 sp=0xc42004d9e8 pc=0x452980
runtime.cgoCheckWriteBarrier(0x800ba3028, 0xafb1e0)
        /usr/local/go/src/runtime/cgocheck.go:46 +0xaa fp=0xc42004da28 sp=0xc42004d9f0 pc=0x403e7a
runtime.wbBufFlush(0x800ba3028, 0xafb1e0)
        /usr/local/go/src/runtime/mwbbuf.go:169 +0x6b fp=0xc42004da48 sp=0xc42004da28 pc=0x42657b
runtime.gcWriteBarrier(0xffffffffffffffff, 0x200, 0x7c, 0x7d, 0xc42004db40, 0x426e07, 0x800ba3028, 0x7d, 0xc42004db40, 0x428eb9, ...)
        /usr/local/go/src/runtime/asm_amd64.s:2442 +0xb4 fp=0xc42004dad0 sp=0xc42004da48 pc=0x4555b4
runtime.(*timer).assignBucket(...)
        /usr/local/go/src/runtime/time.go:58
runtime.addtimer(0x800ba3028)
        /usr/local/go/src/runtime/time.go:128 +0xac fp=0xc42004db00 sp=0xc42004dad0 pc=0x4471ac
internal/poll.runtime_pollSetDeadline(0x800ba2ff8, 0x23c25f833ce, 0xe9)
        /usr/local/go/src/runtime/netpoll.go:228 +0x127 fp=0xc42004db50 sp=0xc42004db00 pc=0x426e07
internal/poll.setDeadlineImpl(0xc4201a8500, 0xbe8e6a87f4c93962, 0x12a843b2e, 0xaf6e00, 0xe9, 0x0, 0x0)
        /usr/local/go/src/internal/poll/fd_poll_runtime.go:154 +0x192 fp=0xc42004dbb0 sp=0xc42004db50 pc=0x48b5a2
internal/poll.(*FD).SetDeadline(0xc4201a8500, 0xbe8e6a87f4c93962, 0x12a843b2e, 0xaf6e00, 0x1, 0x1)
        /usr/local/go/src/internal/poll/fd_poll_runtime.go:123 +0x52 fp=0xc42004dbf8 sp=0xc42004dbb0 pc=0x48b2e2
net.(*conn).SetDeadline(0xc420196110, 0xbe8e6a87f4c93962, 0x12a843b2e, 0xaf6e00, 0x0, 0x0)
        /usr/local/go/src/net/net.go:232 +0x6c fp=0xc42004dc48 sp=0xc42004dbf8 pc=0x69e93c
net.(*dnsPacketConn).SetDeadline(0xc4201907c0, 0xbe8e6a87f4c93962, 0x12a843b2e, 0xaf6e00, 0x1, 0xc420198520)
        <autogenerated>:1 +0x5a fp=0xc42004dc88 sp=0xc42004dc48 pc=0x6b506a
net.(*Resolver).exchange(0xaf59e0, 0x905920, 0xc4201cc360, 0xc420198520, 0xa, 0xc420198670, 0xb, 0x8c001c, 0x12a05f200, 0x0, ...)
        /usr/local/go/src/net/dnsclient_unix.go:135 +0x5a8 fp=0xc42004de20 sp=0xc42004dc88 pc=0x685c98
net.(*Resolver).tryOneName(0xaf59e0, 0x905920, 0xc4201cc360, 0xc4201d2320, 0xc420198670, 0xb, 0x1c, 0x0, 0x0, 0x0, ...)
        /usr/local/go/src/net/dnsclient_unix.go:161 +0x148 fp=0xc42004def0 sp=0xc42004de20 pc=0x685f38
net.(*Resolver).goLookupIPCNAMEOrder.func1(0xaf59e0, 0x905920, 0xc4201cc360, 0xc4201d2320, 0xc420190770, 0xc4201cc4e0, 0xc42004001c)
        /usr/local/go/src/net/dnsclient_unix.go:485 +0xb0 fp=0xc42004dfa8 sp=0xc42004def0 pc=0x6b0400
runtime.goexit()
        /usr/local/go/src/runtime/asm_amd64.s:2361 +0x1 fp=0xc42004dfb0 sp=0xc42004dfa8 pc=0x4554f1
created by net.(*Resolver).goLookupIPCNAMEOrder
        /usr/local/go/src/net/dnsclient_unix.go:483 +0x242

goroutine 1 [select]:
net/http.(*Transport).getConn(0xaef400, 0xc420193b00, 0x0, 0xc4201ac270, 0x5, 0xc420198420, 0xe, 0x0, 0x0, 0xc4201d0280)
        /usr/local/go/src/net/http/transport.go:962 +0x54c
net/http.(*Transport).RoundTrip(0xaef400, 0xc4201ae200, 0xaef400, 0x0, 0x0)
        /usr/local/go/src/net/http/transport.go:409 +0x60b
net/http.send(0xc4201ae200, 0x900000, 0xaef400, 0x0, 0x0, 0x0, 0x1, 0x0, 0xc4201960e0, 0xc4201ae200)
        /usr/local/go/src/net/http/client.go:252 +0x185
net/http.(*Client).send(0xaf6aa0, 0xc4201ae200, 0x0, 0x0, 0x0, 0xc4201960e0, 0x0, 0x1, 0x20)
        /usr/local/go/src/net/http/client.go:176 +0xfa
net/http.(*Client).Do(0xaf6aa0, 0xc4201ae200, 0xc4201ac270, 0x2b, 0x0)
        /usr/local/go/src/net/http/client.go:615 +0x28d
net/http.(*Client).Get(0xaf6aa0, 0xc4201ac270, 0x2b, 0x1, 0x1, 0x7fffffffe8dd)
        /usr/local/go/src/net/http/client.go:396 +0x9d
cmd/go/internal/web.GetMaybeInsecure.func1(0x89b7c6, 0x5, 0x8, 0x4d4f7b, 0x7fffffffe8dd, 0xa, 0xc42017722e)
        /usr/local/go/src/cmd/go/internal/web/http.go:90 +0x14b
cmd/go/internal/web.GetMaybeInsecure(0x7fffffffe8dd, 0x1a, 0x0, 0x1, 0x1, 0x8, 0x870e60, 0x403e07, 0xc4201960c0)
        /usr/local/go/src/cmd/go/internal/web/http.go:99 +0xa2
cmd/go/internal/get.repoRootForImportDynamic(0x7fffffffe8dd, 0x1a, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/cmd/go/internal/get/vcs.go:766 +0x102
cmd/go/internal/get.repoRootForImportPath(0x7fffffffe8dd, 0x1a, 0x0, 0x0, 0x4dfefa, 0x85c7c0)
        /usr/local/go/src/cmd/go/internal/get/vcs.go:657 +0x3bb
cmd/go/internal/get.downloadPackage(0xc42007c400, 0xc420095980, 0x7fffffffe8dd)
        /usr/local/go/src/cmd/go/internal/get/get.go:413 +0x1363
cmd/go/internal/get.download(0x7fffffffe8dd, 0x1a, 0x0, 0xc420194220, 0x0)
        /usr/local/go/src/cmd/go/internal/get/get.go:260 +0xccc
cmd/go/internal/get.runGet(0xaedc60, 0xc420190390, 0x1, 0x1)
        /usr/local/go/src/cmd/go/internal/get/get.go:134 +0x14d
main.main()
        /usr/local/go/src/cmd/go/main.go:139 +0x796

goroutine 5 [syscall]:
os/signal.signal_recv(0x0)
        /usr/local/go/src/runtime/sigqueue.go:139 +0xa6
os/signal.loop()
        /usr/local/go/src/os/signal/signal_unix.go:22 +0x22
created by os/signal.init.0
        /usr/local/go/src/os/signal/signal_unix.go:28 +0x41

goroutine 18 [select]:
net.(*Resolver).LookupIPAddr(0xaf59e0, 0x905920, 0xc4201cc360, 0xc420198420, 0xa, 0x0, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/net/lookup.go:206 +0x4ca
net.(*Resolver).internetAddrList(0xaf59e0, 0x905920, 0xc4201cc360, 0x89ae5f, 0x3, 0xc420198420, 0xe, 0x0, 0x0, 0x0, ...)
        /usr/local/go/src/net/ipsock.go:293 +0x5a9
net.(*Resolver).resolveAddrList(0xaf59e0, 0x905920, 0xc4201cc360, 0x89b1fc, 0x4, 0x89ae5f, 0x3, 0xc420198420, 0xe, 0x0, ...)
        /usr/local/go/src/net/dial.go:193 +0x50c
net.(*Dialer).DialContext(0xc4200724e0, 0x9058e0, 0xc420026110, 0x89ae5f, 0x3, 0xc420198420, 0xe, 0x0, 0x0, 0x0, ...)
        /usr/local/go/src/net/dial.go:375 +0x222
net.(*Dialer).DialContext-fm(0x9058e0, 0xc420026110, 0x89ae5f, 0x3, 0xc420198420, 0xe, 0xc4201e0520, 0x710339, 0xc420026110, 0x824b40)
        /usr/local/go/src/net/http/transport.go:46 +0x73
net/http.(*Transport).dial(0xaef400, 0x9058e0, 0xc420026110, 0x89ae5f, 0x3, 0xc420198420, 0xe, 0x0, 0x0, 0x0, ...)
        /usr/local/go/src/net/http/transport.go:898 +0x20d
net/http.(*Transport).dialConn(0xaef400, 0x9058e0, 0xc420026110, 0x0, 0xc4201ac270, 0x5, 0xc420198420, 0xe, 0x0, 0x0, ...)
        /usr/local/go/src/net/http/transport.go:1143 +0x317
net/http.(*Transport).getConn.func4(0xaef400, 0x9058e0, 0xc420026110, 0xc420193b30, 0xc4201f6000)
        /usr/local/go/src/net/http/transport.go:957 +0x78
created by net/http.(*Transport).getConn
        /usr/local/go/src/net/http/transport.go:956 +0x357

goroutine 20 [chan receive]:
net.(*Resolver).goLookupIPCNAMEOrder(0xaf59e0, 0x905920, 0xc4201cc360, 0xc420198420, 0xa, 0x1, 0xc42007e780, 0xc42007e7a8, 0xc42003adf0, 0xc42003add0, ...)
        /usr/local/go/src/net/dnsclient_unix.go:491 +0x387
net.(*Resolver).lookupIP(0xaf59e0, 0x905920, 0xc4201cc360, 0xc420198420, 0xa, 0xc42007e7a8, 0xc42003ae58, 0x20, 0xc42002e6d0, 0x3)
        /usr/local/go/src/net/lookup_unix.go:101 +0xaa
net.(*Resolver).(net.lookupIP)-fm(0x905920, 0xc4201cc360, 0xc420198420, 0xa, 0x428eb9, 0x8, 0xc42006e240, 0x0, 0xc42003aea0)
        /usr/local/go/src/net/lookup.go:192 +0x56
net.glob..func10(0x905920, 0xc4201cc360, 0xc4201904d0, 0xc420198420, 0xa, 0x0, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/net/hook.go:19 +0x52
net.(*Resolver).LookupIPAddr.func1(0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/net/lookup.go:200 +0xd8
internal/singleflight.(*Group).doCall(0xaf59d0, 0xc42019a640, 0xc420198420, 0xa, 0xc420193c50)
        /usr/local/go/src/internal/singleflight/singleflight.go:95 +0x2e
created by internal/singleflight.(*Group).DoChan
        /usr/local/go/src/internal/singleflight/singleflight.go:88 +0x2d0

goroutine 21 [runnable]:
sync.(*Mutex).Unlock(0xb14bd0)
        /usr/local/go/src/sync/mutex.go:175 +0xd5
sync.(*Once).Do(0xb14bd0, 0xc4200516a0)
        /usr/local/go/src/sync/once.go:46 +0x77
net.supportsIPv4map(0x0)
        /usr/local/go/src/net/ipsock.go:46 +0x4f
net.setDefaultSockopts(0x4, 0x2, 0x2, 0x0, 0x0, 0x0)
        /usr/local/go/src/net/sockopt_bsd.go:28 +0x26
net.socket(0x905920, 0xc420072960, 0x89ae65, 0x3, 0x2, 0x2, 0x0, 0x0, 0x906e80, 0x0, ...)
        /usr/local/go/src/net/sock_posix.go:46 +0xa6
net.internetSocket(0x905920, 0xc420072960, 0x89ae65, 0x3, 0x906e80, 0x0, 0x906e80, 0xc42016ec00, 0x2, 0x0, ...)
        /usr/local/go/src/net/ipsock_posix.go:141 +0x129
net.dialUDP(0x905920, 0xc420072960, 0x89ae65, 0x3, 0x0, 0xc42016ec00, 0x12a8459bc, 0xaf6e00, 0x12a04ee44)
        /usr/local/go/src/net/udpsock_posix.go:98 +0xb9
net.dialSingle(0x905920, 0xc420072960, 0xc4200b4680, 0x902ba0, 0xc42016ec00, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/net/dial.go:550 +0x615
net.dialSerial(0x905920, 0xc420072960, 0xc4200b4680, 0xc4200553e0, 0x1, 0x1, 0x0, 0x0, 0x0, 0x0)
        /usr/local/go/src/net/dial.go:515 +0x22d
net.(*Dialer).DialContext(0xc420051c20, 0x905920, 0xc420072960, 0x89ae65, 0x3, 0xc420198520, 0xa, 0x0, 0x0, 0x0, ...)
        /usr/local/go/src/net/dial.go:397 +0x66f
net.(*Resolver).dial(0xaf59e0, 0x905920, 0xc420072960, 0x89ae65, 0x3, 0xc420198520, 0xa, 0xc4200553d0, 0x0, 0x0, ...)
        /usr/local/go/src/net/lookup_unix.go:66 +0x347
net.(*Resolver).exchange(0xaf59e0, 0x905920, 0xc4201cc360, 0xc420198520, 0xa, 0xc420198670, 0xb, 0x8c0001, 0x12a05f200, 0x0, ...)
        /usr/local/go/src/net/dnsclient_unix.go:129 +0x29e
net.(*Resolver).tryOneName(0xaf59e0, 0x905920, 0xc4201cc360, 0xc4201d2320, 0xc420198670, 0xb, 0x1, 0x0, 0x0, 0xc42003afa8, ...)
        /usr/local/go/src/net/dnsclient_unix.go:161 +0x148
net.(*Resolver).goLookupIPCNAMEOrder.func1(0xaf59e0, 0x905920, 0xc4201cc360, 0xc4201d2320, 0xc420190770, 0xc4201cc4e0, 0xc420040001)
        /usr/local/go/src/net/dnsclient_unix.go:485 +0xb0
created by net.(*Resolver).goLookupIPCNAMEOrder
        /usr/local/go/src/net/dnsclient_unix.go:483 +0x242
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bradfitz commented Jan 12, 2018

@bradfitz bradfitz added this to the Go1.10 milestone Jan 12, 2018

@ianlancetaylor ianlancetaylor changed the title from fatal error: Go pointer stored into non-Go memory to runtime: fatal error: Go pointer stored into non-Go memory Jan 12, 2018

@ianlancetaylor ianlancetaylor self-assigned this Jan 13, 2018

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gopherbot Jan 13, 2018

Change https://golang.org/cl/87637 mentions this issue: runtime: don't issue cgocheck error for timer bucket source pointer

gopherbot commented Jan 13, 2018

Change https://golang.org/cl/87637 mentions this issue: runtime: don't issue cgocheck error for timer bucket source pointer

@gopherbot gopherbot closed this in 4b3a3bd Jan 15, 2018

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