Fix Ping data-race #91
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tigrato
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While testing some code under `-race` flag, the race detector flagged a
data race on `spdystream.Ping` code path.
```
==================
WARNING: DATA RACE
Read at 0x00c012a966a8 by goroutine 483923:
github.com/moby/spdystream.(*Connection).handlePingFrame()
/go/pkg/mod/github.com/moby/spdystream@v0.2.0/connection.go:615 +0x3e
github.com/moby/spdystream.(*Connection).frameHandler()
/go/pkg/mod/github.com/moby/spdystream@v0.2.0/connection.go:432 +0x144
github.com/moby/spdystream.(*Connection).Serve.func2()
/go/pkg/mod/github.com/moby/spdystream@v0.2.0/connection.go:331 +0xa6
github.com/moby/spdystream.(*Connection).Serve.func4()
/go/pkg/mod/github.com/moby/spdystream@v0.2.0/connection.go:332 +0x47
Previous write at 0x00c012a966a8 by goroutine 483918:
github.com/moby/spdystream.(*Connection).Ping()
/go/pkg/mod/github.com/moby/spdystream@v0.2.0/connection.go:281 +0x117
github.com/moby/spdystream.(*Connection).Ping-fm()
<autogenerated>:1 +0x39
k8s.io/apimachinery/pkg/util/httpstream/spdy.(*connection).sendPings()
/go/pkg/mod/k8s.io/apimachinery@v0.26.3/pkg/util/httpstream/spdy/connection.go:197 +0x1b6
k8s.io/apimachinery/pkg/util/httpstream/spdy.newConnection.func2()
/go/pkg/mod/k8s.io/apimachinery@v0.26.3/pkg/util/httpstream/spdy/connection.go:96 +0x47
Goroutine 483923 (running) created at:
github.com/moby/spdystream.(*Connection).Serve()
/go/pkg/mod/github.com/moby/spdystream@v0.2.0/connection.go:327 +0x9e
k8s.io/apimachinery/pkg/util/httpstream/spdy.newConnection.func1()
/go/pkg/mod/k8s.io/apimachinery@v0.26.3/pkg/util/httpstream/spdy/connection.go:94 +0x47
Goroutine 483918 (running) created at:
k8s.io/apimachinery/pkg/util/httpstream/spdy.newConnection()
/go/pkg/mod/k8s.io/apimachinery@v0.26.3/pkg/util/httpstream/spdy/connection.go:96 +0x34d
k8s.io/apimachinery/pkg/util/httpstream/spdy.NewClientConnectionWithPings()
/go/pkg/mod/k8s.io/apimachinery@v0.26.3/pkg/util/httpstream/spdy/connection.go:57 +0x224
k8s.io/apimachinery/pkg/util/httpstream/spdy.(*SpdyRoundTripper).NewConnection()
/go/pkg/mod/k8s.io/apimachinery@v0.26.3/pkg/util/httpstream/spdy/roundtripper.go:357 +0x644
k8s.io/client-go/transport/spdy.Negotiate()
/go/pkg/mod/k8s.io/client-go@v0.26.3/transport/spdy/spdy.go:98 +0x42d
k8s.io/client-go/tools/remotecommand.(*streamExecutor).newConnectionAndStream()
/go/pkg/mod/k8s.io/client-go@v0.26.3/tools/remotecommand/remotecommand.go:125 +0x2d7
k8s.io/client-go/tools/remotecommand.(*streamExecutor).StreamWithContext()
/go/pkg/mod/k8s.io/client-go@v0.26.3/tools/remotecommand/remotecommand.go:157 +0xbc
==================
```
This PR aims to fix the present data race.
Signed-off-by: Tiago Silva <tiago.silva@goteleport.com>
tigrato
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|
@thaJeztah @dims PTAL |
|
@thaJeztah @dims any update on this one? |
dmcgowan
approved these changes
Aug 22, 2023
|
Howdy @dmcgowan @tigrato @thaJeztah 👋 Is there any reason this PR has not been merged yet? It's been approved for over 6 months. The bug is impacting other systems (e.g. https://gitlab.com/gitlab-org/gitlab-runner/-/issues/31077). What's missing to get this merged? 🙇 |
I am waiting for someone with write access to merge the PR. At gravitational, we keep a fork of this library https://github.com/gravitational/spdystream (branch is teleport) where we included this fix to avoid having crashes and several data races flagged during tests. |
|
Thanks @tigrato 👍 |
RinkuDas7857
pushed a commit
to RinkuDas7857/Gitlab-runner-
that referenced
this pull request
Mar 24, 2024
There is currently a race condition in github.com/moby/spdystream library used indirectly in GitLab Runner. There is an existing PR moby/spdystream#91 to have it fixed but it has not been merged yet. In this MR, we use the following fork github.com/gravitational/spdystream where the PR has been merged. The replace go.mod rule can still be removed when the PR mentioned is merged in the moby/spdystream library
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While testing some code under
-raceflag, the race detector flagged a data race onspdystream.Pingcode path.This PR aims to fix the present data race