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CorruptedFrameException in LengthFieldBasedFrameDecoder when using Epoll with AdaptiveRecvByteBufAllocator

See original GitHub issue

Been using this code for years:

    new LengthFieldBasedFrameDecoder(1400, 0, 2, -2, 0, true),

It worked with NIO for a long time, and with EPOLL for several Netty versions. But now it fails with the exception seen below.

Expected behavior

Frames are read correctly.

Actual behavior

Exception is thrown when using EPOLL mode:

    io.netty.handler.codec.CorruptedFrameException: Adjusted frame length (0) is less than lengthFieldEndOffset: 2
    	at io.netty.handler.codec.LengthFieldBasedFrameDecoder.failOnFrameLengthLessThanLengthFieldEndOffset(LengthFieldBasedFrameDecoder.java:360)
    	at io.netty.handler.codec.LengthFieldBasedFrameDecoder.decode(LengthFieldBasedFrameDecoder.java:417)
    	at io.netty.handler.codec.LengthFieldBasedFrameDecoder.decode(LengthFieldBasedFrameDecoder.java:334)
    	at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:503)
    	at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:442)
    	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:281)
    	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)
    	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)
    	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)
    	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
    	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)
    	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)
    	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)
    	at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:287)
    	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)
    	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)
    	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)
    	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1422)
    	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)
    	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)
    	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:931)
    	at io.netty.channel.epoll.EpollDatagramChannel.read(EpollDatagramChannel.java:688)
    	at io.netty.channel.epoll.EpollDatagramChannel.access$100(EpollDatagramChannel.java:57)
    	at io.netty.channel.epoll.EpollDatagramChannel$EpollDatagramChannelUnsafe.epollInReady(EpollDatagramChannel.java:507)
    	at io.netty.channel.epoll.AbstractEpollChannel$AbstractEpollUnsafe$1.run(AbstractEpollChannel.java:394)
    	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163)
    	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:510)
    	at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:413)
    	at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1050)
    	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
    	at java.base/java.lang.Thread.run(Thread.java:834)

Steps to reproduce

Unable to provide access to private data stream.

Netty version

4.1.43.Final

JVM version (e.g. `java -version`)

openjdk version “11.0.5” 2019-10-15 OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.5+10) OpenJDK 64-Bit Server VM AdoptOpenJDK (build 11.0.5+10, mixed mode)

OS version (e.g. `uname -a`)

Linux 4.15.0-70-generic #79-Ubuntu SMP Tue Nov 12 10:36:11 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

Issue Analytics

State:
Created 4 years ago
Comments:66 (25 by maintainers)

Top GitHub Comments

1reaction

morvaelcommented, Nov 27, 2019

Ok, but that will have to wait for tomorrow.

0reactions

morvaelcommented, Nov 29, 2019

Turns out to be too complicated. #512 was fixed, but not in the release used by netty 44 snapshot. Also, when compiled under ppc64le, I get a netty-all version that I can’t test on my x86_64 machine (for that I would use your x86_64 so), because there is no epoll .so for me. I don’t want to setup another compilation environment on my machine, so I guess I’ll have to wait for 44 release 😃

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