[ https://issues.jboss.org/browse/WFLY-12304?page=com.atlassian.jira.plugin... ] Flavia Rainone commented on WFLY-12304: --------------------------------------- Fixing that caused a new code to be reached that wasn't reached before (because the channel already handles FileRegion, but this code was unreachable because of the CCE). That code seems to contain another bug: {code}04:43:32,284 ERROR [org.apache.activemq.artemis.core.client] (Thread-1 (ActiveMQ-client-netty-threads)) AMQ214031: Failed to decode buffer, disconnect immediately.: java.lang.IllegalStateException: java.lang.IndexOutOfBoundsException: readerIndex(4) + length(1) exceeds writerIndex(4): PooledUnsafeDirectByteBuf(ridx: 4, widx: 4, cap: 4) at org.apache.activemq.artemis@2.10.0//org.apache.activemq.artemis.core.protocol.core.impl.RemotingConnectionImpl.bufferReceived(RemotingConnectionImpl.java:390) at org.apache.activemq.artemis@2.10.0//org.apache.activemq.artemis.core.client.impl.ClientSessionFactoryImpl$DelegatingBufferHandler.bufferReceived(ClientSessionFactoryImpl.java:1191) at org.apache.activemq.artemis@2.10.0//org.apache.activemq.artemis.core.remoting.impl.netty.ActiveMQChannelHandler.channelRead(ActiveMQChannelHandler.java:73) at io.netty@4.1.34.Final//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) at io.netty@4.1.34.Final//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) at io.netty@4.1.34.Final//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) at io.netty@4.1.34.Final//io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:323) at io.netty@4.1.34.Final//io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310) at io.netty@4.1.34.Final//io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:426) at io.netty@4.1.34.Final//io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:278) at io.netty@4.1.34.Final//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) at io.netty@4.1.34.Final//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) at io.netty@4.1.34.Final//io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) at io.netty@4.1.34.Final//io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1408) at io.netty@4.1.34.Final//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) at io.netty@4.1.34.Final//io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) at io.netty@4.1.34.Final//io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:930) at io.netty@4.1.34.Final//io.netty.channel.epoll.AbstractEpollStreamChannel$EpollStreamUnsafe.epollInReady(AbstractEpollStreamChannel.java:796) at io.netty@4.1.34.Final//io.netty.channel.epoll.EpollEventLoop.processReady(EpollEventLoop.java:427) at io.netty@4.1.34.Final//io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:328) at io.netty@4.1.34.Final//io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905) at org.apache.activemq.artemis.journal//org.apache.activemq.artemis.utils.ActiveMQThreadFactory$1.run(ActiveMQThreadFactory.java:118) Caused by: java.lang.IndexOutOfBoundsException: readerIndex(4) + length(1) exceeds writerIndex(4): PooledUnsafeDirectByteBuf(ridx: 4, widx: 4, cap: 4) at io.netty@4.1.34.Final//io.netty.buffer.AbstractByteBuf.checkReadableBytes0(AbstractByteBuf.java:1428) at io.netty@4.1.34.Final//io.netty.buffer.AbstractByteBuf.readByte(AbstractByteBuf.java:723) at io.netty@4.1.34.Final//io.netty.buffer.WrappedByteBuf.readByte(WrappedByteBuf.java:521) at org.apache.activemq.artemis.journal//org.apache.activemq.artemis.core.buffers.impl.ChannelBufferWrapper.readByte(ChannelBufferWrapper.java:280) at org.apache.activemq.artemis@2.10.0//org.apache.activemq.artemis.core.protocol.ServerPacketDecoder.decode(ServerPacketDecoder.java:124) at org.apache.activemq.artemis@2.10.0//org.apache.activemq.artemis.core.protocol.core.impl.RemotingConnectionImpl.bufferReceived(RemotingConnectionImpl.java:377) ... 21 more{code} I'm still working on this. -- This message was sent by Atlassian Jira (v7.13.5#713005)