DB2 query throws IndexOutOfBoundsException

Version

4.1.3

Context

Using DB2, the following query:

select table_name as TABLE_NAME, column_name as COLUMN_NAME,  
             case when data_type = 'CHARACTER VARYING' then 'VARCHAR' else data_type end as TYPE_NAME, 
             null as COLUMN_SIZE, null as DECIMAL_DIGITS, is_nullable as IS_NULLABLE, null as DATA_TYPE 
from sysibm.columns 
where true  and table_catalog = ? 
order by table_catalog, table_schema, table_name, column_name, ordinal_position

throws:

 java.lang.IndexOutOfBoundsException: readerIndex(32741) + length(17) exceeds writerIndex(32757): ReadOnlyByteBuf(ridx: 32741, widx: 32757, cap: 32757/32757, unwrapped: PooledSlicedByteBuf(ridx: 0, widx: 32757, cap: 32757/32757, unwrapped: PooledUnsafeDirectByteBuf(ridx: 32860, widx: 32860, cap: 65536)))

See below for full stacktrace.

Do you have a reproducer?

No, but it should be easy to reproduce by adding the query to an existing test, since it only relies on sysibm.columns (DB2’s version of information_schema).

We can provide a reproducer using Hibernate ORM and Reactive PRs. Please let me know if you’d like us to do that.

Steps to reproduce

1. …
2. …
3. …
4. …

Extra

• Fedora
• JDK 1.8

Full stacktrace:

java.util.concurrent.CompletionException: java.lang.IndexOutOfBoundsException: readerIndex(32741) + length(17) exceeds writerIndex(32757): ReadOnlyByteBuf(ridx: 32741, widx: 32757, cap: 32757/32757, unwrapped: PooledSlicedByteBuf(ridx: 0, widx: 32757, cap: 32757/32757, unwrapped: PooledUnsafeDirectByteBuf(ridx: 32860, widx: 32860, cap: 65536)))
        at java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:292) ~[?:1.8.0_302]
        at java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:308) ~[?:1.8.0_302]
        at java.util.concurrent.CompletableFuture.uniApply(CompletableFuture.java:607) ~[?:1.8.0_302]
        at java.util.concurrent.CompletableFuture$UniApply.tryFire(CompletableFuture.java:591) ~[?:1.8.0_302]
        at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) ~[?:1.8.0_302]
        at java.util.concurrent.CompletableFuture.completeExceptionally(CompletableFuture.java:1990) ~[?:1.8.0_302]
        at io.vertx.core.Future.lambda$toCompletionStage$2(Future.java:362) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.FutureImpl$3.onFailure(FutureImpl.java:153) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.FutureBase.emitFailure(FutureBase.java:75) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.FutureImpl.tryFail(FutureImpl.java:230) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.PromiseImpl.tryFail(PromiseImpl.java:23) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.sqlclient.impl.QueryResultBuilder.tryFail(QueryResultBuilder.java:118) ~[vertx-sql-client-4.1.3.jar:4.1.3]
        at io.vertx.core.Promise.fail(Promise.java:89) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.Promise.handle(Promise.java:53) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.Promise.handle(Promise.java:29) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.FutureImpl$3.onFailure(FutureImpl.java:153) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.FutureBase.emitFailure(FutureBase.java:75) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.FutureImpl.tryFail(FutureImpl.java:230) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.PromiseImpl.tryFail(PromiseImpl.java:23) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.PromiseImpl.onFailure(PromiseImpl.java:54) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.FutureImpl$ListenerArray.onFailure(FutureImpl.java:268) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.FutureBase.emitFailure(FutureBase.java:75) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.FutureImpl.tryFail(FutureImpl.java:230) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.PromiseImpl.tryFail(PromiseImpl.java:23) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.PromiseImpl.onFailure(PromiseImpl.java:54) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.PromiseImpl.handle(PromiseImpl.java:43) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.future.PromiseImpl.handle(PromiseImpl.java:23) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.sqlclient.impl.command.CommandResponse.fire(CommandResponse.java:46) ~[vertx-sql-client-4.1.3.jar:4.1.3]
        at io.vertx.sqlclient.impl.SocketConnectionBase.handleMessage(SocketConnectionBase.java:279) ~[vertx-sql-client-4.1.3.jar:4.1.3]
        at io.vertx.sqlclient.impl.SocketConnectionBase.lambda$init$0(SocketConnectionBase.java:98) ~[vertx-sql-client-4.1.3.jar:4.1.3]
        at io.vertx.core.net.impl.NetSocketImpl.lambda$new$1(NetSocketImpl.java:97) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.streams.impl.InboundBuffer.handleEvent(InboundBuffer.java:240) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.streams.impl.InboundBuffer.write(InboundBuffer.java:130) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.net.impl.NetSocketImpl.lambda$handleMessage$9(NetSocketImpl.java:390) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.EventLoopContext.emit(EventLoopContext.java:50) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.ContextImpl.emit(ContextImpl.java:274) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.impl.EventLoopContext.emit(EventLoopContext.java:22) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.net.impl.NetSocketImpl.handleMessage(NetSocketImpl.java:389) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.net.impl.ConnectionBase.read(ConnectionBase.java:155) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.vertx.core.net.impl.VertxHandler.channelRead(VertxHandler.java:154) ~[vertx-core-4.1.3.jar:4.1.3]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) ~[netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) ~[netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) ~[netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436) ~[netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.vertx.db2client.impl.codec.DB2Encoder.lambda$write$0(DB2Encoder.java:72) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.codec.DB2Decoder.decodePayload(DB2Decoder.java:96) [vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.codec.DB2Decoder.decode(DB2Decoder.java:52) [vertx-db2-client-4.1.3.jar:4.1.3]
        at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:507) [netty-codec-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:446) [netty-codec-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276) [netty-codec-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) [netty-transport-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:986) [netty-common-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [netty-common-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [netty-common-4.1.67.Final.jar:4.1.67.Final]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_302]
Caused by: java.lang.IndexOutOfBoundsException: readerIndex(32741) + length(17) exceeds writerIndex(32757): ReadOnlyByteBuf(ridx: 32741, widx: 32757, cap: 32757/32757, unwrapped: PooledSlicedByteBuf(ridx: 0, widx: 32757, cap: 32757/32757, unwrapped: PooledUnsafeDirectByteBuf(ridx: 32860, widx: 32860, cap: 65536)))
        at io.netty.buffer.AbstractByteBuf.checkReadableBytes0(AbstractByteBuf.java:1442) ~[netty-buffer-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.buffer.AbstractByteBuf.checkReadableBytes(AbstractByteBuf.java:1428) ~[netty-buffer-4.1.67.Final.jar:4.1.67.Final]
        at io.netty.buffer.AbstractByteBuf.skipBytes(AbstractByteBuf.java:971) ~[netty-buffer-4.1.67.Final.jar:4.1.67.Final]
        at io.vertx.db2client.impl.drda.Cursor.skipFdocaBytes(Cursor.java:1669) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.drda.Cursor.calculateColumnOffsetsForRow_(Cursor.java:1488) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.drda.Cursor.stepNext(Cursor.java:220) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.drda.Cursor.next(Cursor.java:232) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.codec.RowResultDecoder.next(RowResultDecoder.java:52) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.codec.ExtendedQueryCommandBaseCodec.decodePreparedQuery(ExtendedQueryCommandBaseCodec.java:81) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.codec.ExtendedQueryCommandCodec.decodeQuery(ExtendedQueryCommandCodec.java:49) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.codec.QueryCommandBaseCodec.decodePayload(QueryCommandBaseCodec.java:69) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        at io.vertx.db2client.impl.codec.DB2Decoder.decodePayload(DB2Decoder.java:79) ~[vertx-db2-client-4.1.3.jar:4.1.3]
        ... 21 more

[mswatosh]

@vietj I’ve made some progress in my local environment, but I haven’t had a lot of time and it’s slow going since I have to learn how the code works as I go.

[DavideD]

I’ve created a test on this branch: https://github.com/DavideD/vertx-sql-client/commit/d117691d3486f2ef2c4d7ec26670148a57b9c3a3