# GoLang APM agent panic runtime error: invalid memory address or nil pointer dereference **URL:** \ **Category:** APM\ **Tags:** go\ **Created:** [March 4, 2020, 12:07pm UTC](https://discuss.elastic.co/t/golang-apm-agent-panic-runtime-error-invalid-memory-address-or-nil-pointer-dereference/222068 "2020-03-04T12:07:59Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![marv72](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/marv72/32/63788_2.png) [@marv72](https://discuss.elastic.co/u/marv72)\ **Post date:** [March 4, 2020, 12:07pm UTC](https://discuss.elastic.co/t/golang-apm-agent-panic-runtime-error-invalid-memory-address-or-nil-pointer-dereference/222068/1 "2020-03-04T12:07:59Z")
If you are asking about a problem you are experiencing, please use the following template, as it will help us help you. If you have a different problem, please delete all of this text 🙂 **Elasticsearch version** : 7.6.0 **APM Server version** : 7.6.0 **APM Agent language and version** : GoLang Agent apm@v1.6.0 **Original install method (e.g. download page, yum, deb, from source, etc.) and version**: We have been running GoLang Agent for a while but started throwing panic and makes my pod restart . Mar 4, 2020 @ 11:56:27.058 panic: runtime error: invalid memory address or nil pointer dereference - supplier-api Mar 4, 2020 @ 11:56:27.058 [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x8049fec] - supplier-api Mar 4, 2020 @ 11:56:27.058 - supplier-api Mar 4, 2020 @ 11:56:27.058 goroutine 6 [running]: - supplier-api Mar 4, 2020 @ 11:56:27.058 runtime/internal/atomic.Xadd64(0xa0f405c, 0x149e02e, 0x0, 0xffffffff, 0x0) - supplier-api Mar 4, 2020 @ 11:56:27.058 /usr/local/go/src/runtime/internal/atomic/asm\_386.s:105 +0xc - supplier-api Mar 4, 2020 @ 11:56:27.058 [go.elastic.co/apm.(\*breakdownTiming](http://go.elastic.co/apm.(*breakdownTiming)).accumulate(0xa0f405c, 0x149e02e, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0) - supplier-api Mar 4, 2020 @ 11:56:27.058 /go/pkg/mod/go.elastic.co/apm@v1.6.0/breakdown.go:167 +0x4e - supplier-api Mar 4, 2020 @ 11:56:27.058 [go.elastic.co/apm.(\*breakdownMetricsMap](http://go.elastic.co/apm.(*breakdownMetricsMap)).record(0xa0664e0, 0x841f1f7, 0x7, 0xa4a4220, 0x19, 0x841d4b9, 0x3, 0x0, 0x0, 0x149e02e, ...) - supplier-api Mar 4, 2020 @ 11:56:27.058 /go/pkg/mod/go.elastic.co/apm@v1.6.0/breakdown.go:230 +0x1b1 - supplier-api Mar 4, 2020 @ 11:56:27.058 [go.elastic.co/apm.(\*breakdownMetrics](http://go.elastic.co/apm.(*breakdownMetrics)).recordTransaction(0xa066540, 0xa06c1c0, 0x0) - supplier-api Mar 4, 2020 @ 11:56:27.058 /go/pkg/mod/go.elastic.co/apm@v1.6.0/breakdown.go:198 +0x17d - supplier-api Mar 4, 2020 @ 11:56:27.058 [go.elastic.co/apm.(\*Tracer](http://go.elastic.co/apm.(*Tracer)).loop(0xa00a0f0) - supplier-api Mar 4, 2020 @ 11:56:27.058 /go/pkg/mod/go.elastic.co/apm@v1.6.0/tracer.go:841 +0x1c56 - supplier-api Mar 4, 2020 @ 11:56:27.058 created by [go.elastic.co/apm.newTracer](http://go.elastic.co/apm.newTracer) - supplier-api Mar 4, 2020 @ 11:56:27.058 /go/pkg/mod/go.elastic.co/apm@v1.6.0/tracer.go:410 +0x615 **Provide logs and/or server output (if relevant)**: Importing and Instrumenting the GoLang APM Agent import ( "context" ``` "github.com/lib/pq" "go.elastic.co/apm" "go.elastic.co/apm/module/apmsql" _ "go.elastic.co/apm/module/apmsql/pq" ``` ) /main function func main() { fmt.Println("Main started") //Set up router and handler router := mux.NewRouter() apmgorilla.Instrument(router) controller := controllers.Controller{} router.HandleFunc.... fmt.Println("Listening on port 8000") http.ListenAndServe(":8000", apmhttp.Wrap(router)) } Then create custom spans in each function ``` //Custom Span for Elastic APM span, ctx := apm.StartSpan(ctx, "ValidateAvailabilityRequest", "custom") if span != nil { defer span.End() } ``` ---
**Author:** ![axw](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/axw/32/28197_2.png) [@axw](https://discuss.elastic.co/u/axw)\ **Post date:** [March 5, 2020, 1:17am UTC](https://discuss.elastic.co/t/golang-apm-agent-panic-runtime-error-invalid-memory-address-or-nil-pointer-dereference/222068/2 "2020-03-05T01:17:47Z")
@marv72 sorry you're experiencing this, and thanks for all the details. It appears to be an issue specifically with 386 systems. I've reproduced the bug, and created an issue to track it here: [https://github.com/elastic/apm-agent-go/issues/727](https://github.com/elastic/apm-agent-go/issues/727). Please subscribe to the issue for updates. For the short term, you can set the environment variable `ELASTIC_APM_BREAKDOWN_METRICS=false`, which will disable the "Time spent by span type" graph data. ---
**Author:** ![axw](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/axw/32/28197_2.png) [@axw](https://discuss.elastic.co/u/axw)\ **Post date:** [March 5, 2020, 4:32am UTC](https://discuss.elastic.co/t/golang-apm-agent-panic-runtime-error-invalid-memory-address-or-nil-pointer-dereference/222068/3 "2020-03-05T04:32:18Z")
This is now fixed in the just-released v1.7.1. If you continue to have problems, please reopen the GitHub issue. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [March 26, 2020, 12:32am UTC](https://discuss.elastic.co/t/golang-apm-agent-panic-runtime-error-invalid-memory-address-or-nil-pointer-dereference/222068/4 "2020-03-26T00:32:43Z")
This topic was automatically closed 20 days after the last reply. New replies are no longer allowed.