panic: runtime error: invalid memory address or nil pointer dereference

[surejammy]

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0x9190f2]

goroutine 319714373 [running]:
github.com/valyala/bytebufferpool.(*ByteBuffer).Reset(...)
/var/jenkins_home/workspace/ad-rta/vendor/github.com/valyala/bytebufferpool/bytebuffer.go:110
github.com/valyala/fasthttp.(*Response).ReadBody(0xc0425296c0, 0xc03fc61a40, 0x0?)
/var/jenkins_home/workspace/ad-rta/vendor/github.com/valyala/fasthttp/http.go:1430 +0xb2
github.com/valyala/fasthttp.(*Response).ReadLimitBody(0xc0425296c0, 0xc03fc61a40, 0x0)
/var/jenkins_home/workspace/ad-rta/vendor/github.com/valyala/fasthttp/http.go:1403 +0xd8
github.com/valyala/fasthttp.(*transport).RoundTrip(0xc0425296c0?, 0xc00afa1380, 0xc0000bdc08, 0xc0425296c0)
/var/jenkins_home/workspace/ad-rta/vendor/github.com/valyala/fasthttp/client.go:2918 +0x5b8
github.com/valyala/fasthttp.(*HostClient).doNonNilReqResp(0xc00afa1380, 0xc0000bdc08, 0xc0425296c0)
/var/jenkins_home/workspace/ad-rta/vendor/github.com/valyala/fasthttp/client.go:1372 +0x2e4
github.com/valyala/fasthttp.(*HostClient).do(0xc22c8fda39acef42?, 0x314e389d921b?, 0x1177920?)
/var/jenkins_home/workspace/ad-rta/vendor/github.com/valyala/fasthttp/client.go:1322 +0xa8
github.com/valyala/fasthttp.(*HostClient).Do(0xc00afa1380, 0xc0000bdc08, 0xc0425296c0)
/var/jenkins_home/workspace/ad-rta/vendor/github.com/valyala/fasthttp/client.go:1267 +0x17e
github.com/valyala/fasthttp.(*Client).Do(0x1134960, 0xc0000bdc08, 0xc0425296c0)
/var/jenkins_home/workspace/ad-rta/vendor/github.com/valyala/fasthttp/client.go:551 +0x5f5
github.com/valyala/fasthttp.(*Client).DoTimeout(...)
/var/jenkins_home/workspace/ad-rta/vendor/github.com/valyala/fasthttp/client.go:386
ad-rta/handler/product.requestTimeout.func1()
/var/jenkins_home/workspace/ad-rta/handler/product/execute.go:98 +0x37
created by ad-rta/handler/product.requestTimeout in goroutine 319714417
/var/jenkins_home/workspace/ad-rta/handler/product/execute.go:97 +0xeb

[erikdubbelboer]

Can you show the code how you use the Client and what you do with the response?

[surejammy]

Can you show the code how you use the Client and what you do with the response?

req := fasthttp.AcquireRequest()
defer fasthttp.ReleaseRequest(req)
resp := fasthttp.AcquireResponse()
defer fasthttp.ReleaseResponse(resp)

req.SetRequestURI(url)
req.Header.SetMethod("POST")
req.SetBody(serializedBuffer)
req.Header.SetContentType("application/x-protobuf")
reqStartTime := time.Now()
reqTimeout := e.ExecuteTimeout - time.Since(e.ExecuteStartTime).Milliseconds()
err := requestTimeout(req, resp, time.Duration(reqTimeout)*time.Millisecond)
global.GVA_LOG.Debug("req cost:%v)", time.Since(reqStartTime))
if err != nil {
	global.GVA_LOG.Debug("req err:%v)", err)
	return nil, err
}

if resp.StatusCode() != fasthttp.StatusOK {
	return nil, fmt.Errorf("http status code: %d", resp.StatusCode())
}

respBody := resp.Body()
var rtaRes kjb.RtaResponse
err = proto.Unmarshal(respBody, &rtaRes)
if err != nil {
	return nil, fmt.Errorf("kscqExecute proto %v", string(respBody))
}

var httpClient = &fasthttp.Client{
MaxIdleConnDuration: 30 * time.Minute,
NoDefaultUserAgentHeader: true,
// TLS config
TLSConfig: &tls.Config{
InsecureSkipVerify: true,
},
}

func requestTimeout(req *fasthttp.Request, resp fasthttp.Response, timeout time.Duration) error {
timeoutCtx, cancel := context.WithTimeout(context.Background(), timeout)
defer cancel()
done := make(chan error, 1)
go func() {
err := httpClient.DoTimeout(req, resp, 500time.Millisecond)
done <- err
}()

select {
case err := <-done:
	return err 
case <-timeoutCtx.Done():
	return timeoutCtx.Err()
}

}

[erikdubbelboer]

What are you doing with resp and does any of it happen after defer fasthttp.ReleaseResponse(resp) has been run?