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NullPointerException in AbstractHttp2StreamChannel

See original GitHub issue

Expected behavior

No NPE’s

Actual behavior

NPE’s

Netty version

4.1.37-Final.

I don’t have a clean repro for this, it’s showing up in tests that I’m running to upgrade Netty in finagle. A representitive stack trace looks like this:

285 2019-07-16 11:01:39,967 ERR Caught Throwable from listener onStreamClosed.
 286 java.lang.NullPointerException: null
 287         at io.netty.handler.codec.http2.AbstractHttp2StreamChannel$Http2ChannelUnsafe.doBeginRead(AbstractHttp2StreamChannel.java:786)
 288         at io.netty.handler.codec.http2.AbstractHttp2StreamChannel.streamClosed(AbstractHttp2StreamChannel.java:277)
 289         at io.netty.handler.codec.http2.Http2MultiplexCodec.onHttp2StreamStateChanged(Http2MultiplexCodec.java:195)
 290         at io.netty.handler.codec.http2.Http2FrameCodec$ConnectionListener.onStreamClosed(Http2FrameCodec.java:459)
 291         at io.netty.handler.codec.http2.DefaultHttp2Connection.notifyClosed(DefaultHttp2Connection.java:356)
 292         at io.netty.handler.codec.http2.DefaultHttp2Connection$ActiveStreams.removeFromActiveStreams(DefaultHttp2Connection.java:1000)
 293         at io.netty.handler.codec.http2.DefaultHttp2Connection$ActiveStreams.deactivate(DefaultHttp2Connection.java:956)
 294         at io.netty.handler.codec.http2.DefaultHttp2Connection$DefaultStream.close(DefaultHttp2Connection.java:512)
 295         at io.netty.handler.codec.http2.DefaultHttp2Connection$DefaultStream.close(DefaultHttp2Connection.java:518)
 296         at io.netty.handler.codec.http2.Http2ConnectionHandler.closeStream(Http2ConnectionHandler.java:605)

I suspect that we’re getting a close call triggered by a doRead and that is causing the inboundBuffer field to be null just in time for the .poll() call.

Issue Analytics

State:
Created 4 years ago
Comments:13 (13 by maintainers)

Top GitHub Comments

1reaction

bryce-andersoncommented, Jul 16, 2019

I’ll take it. I hope to have something up this afternoon.

0reactions

normanmaurercommented, Jul 16, 2019

@bryce-anderson np == yes 😉 ? If not I will have a look.

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