cmd/trace: goroutine in unexpected state #17719
Description
Go version and env:
go version devel +032d150 Tue Nov 1 05:42:33 2016 +0000 linux/amd64
GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOOS="linux"
GOPATH="/home/marko/goprojects"
GORACE=""
GOROOT="/home/marko/go"
GOTOOLDIR="/home/marko/go/pkg/tool/linux_amd64"
GCCGO="gccgo"
CC="gcc"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build068272964=/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"
Collect trace with
$ wget http://cppbig105.mlan:13004/debug/pprof/trace?seconds=2 -O lakafka.trace
--2016-11-01 13:37:30-- http://cppbig105.mlan:13004/debug/pprof/trace?seconds=2
Resolving cppbig105.mlan (cppbig105.mlan)... 10.10.147.106
Connecting to cppbig105.mlan (cppbig105.mlan)|10.10.147.106|:13004... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/octet-stream]
Saving to: ‘lakafka.trace’
lakafka.trace [ <=> ] 17.79M 3.62MB/s in 4.9s
2016-11-01 13:37:38 (3.62 MB/s) - ‘lakafka.trace’ saved [18649791]
Execute trace tool
$ go tool trace lakafka.trace
Go to "Goroutine analysis" then select one of the goroutines.
No chart will apper and there is an error in log:
$ go tool trace lakafka.trace
2016/11/01 13:37:39 Parsing trace...
2016/11/01 13:37:50 Serializing trace...
2016/11/01 13:37:51 Splitting trace...
2016/11/01 13:37:56 Opening browser
2016/11/01 13:38:02 failed to generate trace: expected G 481 to be in state 1, but got state 2
^C
Full trace: lakafka.trace.zip