cilium / cilium / 39017
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Jobs 2
Files 905
Run time 38min
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coverage: 34.795% (-0.002%) from 34.797%
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borkmann 
ctmap: Fix data race for accessing nat maps

Commit c9810bf7b2 introduced garbage collection for cleaning orphan entries
in the nat maps whereby concurrent accesses to the maps weren't serialized.

The nat maps accessed via ct map construct are susceptible
to data races in asynchronously running goroutines upon
agent restart when endpoints are restored -

```
2022-02-21T02:42:13.757888057Z WARNING: DATA RACE
2022-02-21T02:42:13.757895621Z Write at 0x00c00081a830 by goroutine 360:
2022-02-21T02:42:13.757912783Z   github.com/cilium/cilium/pkg/bpf.(*Map).Close()
2022-02-21T02:42:13.757920669Z       /go/src/github.com/cilium/cilium/pkg/bpf/map_linux.go:581 +0x1c4
2022-02-21T02:42:13.757927597Z   github.com/cilium/cilium/pkg/maps/ctmap.doGC4·dwrap·4()
2022-02-21T02:42:13.757934561Z       /go/src/github.com/cilium/cilium/pkg/maps/ctmap/ctmap.go:422 +0x39
2022-02-21T02:42:13.757941184Z   github.com/cilium/cilium/pkg/maps/ctmap.doGC4()
2022-02-21T02:42:13.757947352Z       /go/src/github.com/cilium/cilium/pkg/maps/ctmap/ctmap.go:482 +0x4d5
2022-02-21T02:42:13.757953881Z   github.com/cilium/cilium/pkg/maps/ctmap.doGC()
2022-02-21T02:42:13.757960362Z       /go/src/github.com/cilium/cilium/pkg/maps/ctmap/ctmap.go:517 +0x17e
2022-02-21T02:42:13.757966185Z   github.com/cilium/cilium/pkg/maps/ctmap.GC()
2022-02-21T02:42:13.757972307Z       /go/src/github.com/cilium/cilium/pkg/maps/ctmap/ctmap.go:537 +0xc6
2022-02-21T02:42:13.757978599Z   github.com/cilium/cilium/pkg/endpoint.(*Endpoint).garbageCollectConntrack()
2022-02-21T02:42:13.757986321Z       /go/src/github.com/cilium/cilium/pkg/endpoint/bpf.go:1034 +0x804
2022-02-21T02:42:13.757992160Z   github.com/cilium/cilium/pkg/endpoint.(*Endpoint).scrubIPsInConntrackTableLocked()
2022-02-21T02:42:13.757998853Z       /go/src/github.com/cilium/cilium/pkg/endpoint/bpf.go:1039 +0x173
2022-02-21T02:42:13.758004601Z   github.com/cilium/cilium/pkg/endpoint.(*Endpoint).scrubIPsInConntrackTable()
2022-02-21T02:42:13.758010701Z  ... (continued)

44131 of 126832 relevant lines covered (34.79%)

4747.04 hits per line

Jobs
ID Job ID Ran Files Coverage
1 39017.1 0
34.79
 Travis Job 39017.1
2 39017.2 0
34.75
 Travis Job 39017.2
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