https://bz.apache.org/bugzilla/show_bug.cgi?id=63246
Bug ID: 63246
Summary: NullPointerException in AsyncContextImpl
Product: Tomcat 9
Version: 9.0.16
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: kaido...@gmail.com
Target Milestone: -----
We're using the tomcat-embedded-core 9.0.16 shipped with spring boot 2.1.3.
We have a some NPE in AsyncContextImpl line 209. (see stacktrace below)
Pretty sure, that it's related to the fix of this bug, as line 209 was changed
there: https://bz.apache.org/bugzilla/show_bug.cgi?id=63003
As this is not happening of every request, I think it is a race condition.
Unfortunately I was not able to reproduce it locally.
But we're using
org.springframework.boot:spring-boot-starter-web and
org.springframework.boot:spring-boot-starter-webflux together, if that helps.
Please tell me, if I can assist more.
java.lang.NullPointerException: null
at
org.apache.catalina.core.AsyncContextImpl.dispatch(AsyncContextImpl.java:209)
at
org.apache.catalina.core.AsyncContextImpl.dispatch(AsyncContextImpl.java:175)
at
org.apache.catalina.core.AsyncContextImpl.dispatch(AsyncContextImpl.java:169)
at
org.springframework.security.web.servletapi.HttpServlet3RequestFactory$SecurityContextAsyncContext.dispatch(HttpServlet3RequestFactory.java:291)
at
org.springframework.web.context.request.async.StandardServletAsyncWebRequest.dispatch(StandardServletAsyncWebRequest.java:131)
at
org.springframework.web.context.request.async.WebAsyncManager.setConcurrentResultAndDispatch(WebAsyncManager.java:387)
at
org.springframework.web.context.request.async.WebAsyncManager.lambda$startDeferredResultProcessing$8(WebAsyncManager.java:453)
at
org.springframework.web.context.request.async.DeferredResult.setResultInternal(DeferredResult.java:267)
at
org.springframework.web.context.request.async.DeferredResult.setResult(DeferredResult.java:238)
at
org.springframework.web.servlet.mvc.method.annotation.ReactiveTypeHandler$DeferredResultSubscriber.onComplete(ReactiveTypeHandler.java:465)
at
reactor.core.publisher.StrictSubscriber.onComplete(StrictSubscriber.java:123)
at
reactor.core.publisher.Operators$MonoSubscriber.complete(Operators.java:1508)
at
reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.drain(MonoIgnoreThen.java:147)
at
reactor.core.publisher.MonoIgnoreThen$ThenIgnoreMain.ignoreDone(MonoIgnoreThen.java:190)
at
reactor.core.publisher.MonoIgnoreThen$ThenIgnoreInner.onComplete(MonoIgnoreThen.java:240)
at
reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:189)
at
reactor.core.publisher.MonoFlatMap$FlatMapInner.onComplete(MonoFlatMap.java:260)
at
reactor.core.publisher.MonoFlatMap$FlatMapMain.secondComplete(MonoFlatMap.java:189)
at
reactor.core.publisher.MonoFlatMap$FlatMapInner.onComplete(MonoFlatMap.java:260)
at
reactor.core.publisher.MonoIgnoreElements$IgnoreElementsSubscriber.onComplete(MonoIgnoreElements.java:81)
at
reactor.core.publisher.FluxMap$MapSubscriber.onComplete(FluxMap.java:136)
at
reactor.core.publisher.FluxRetryPredicate$RetryPredicateSubscriber.onComplete(FluxRetryPredicate.java:107)
at
reactor.core.publisher.MonoCreate$DefaultMonoSink.success(MonoCreate.java:148)
at
reactor.ipc.netty.channel.PooledClientContextHandler.fireContextActive(PooledClientContextHandler.java:87)
at
reactor.ipc.netty.http.client.HttpClientOperations.onInboundNext(HttpClientOperations.java:608)
at
reactor.ipc.netty.channel.ChannelOperationsHandler.channelRead(ChannelOperationsHandler.java:138)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at
io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:438)
at
io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:323)
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:297)
at
io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:253)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1436)
at
io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1203)
at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1247)
at
io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:502)
at
io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:441)
at
io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:278)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at
io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at
io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1408)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at
io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:930)
at
io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
at
io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:677)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:612)
at
io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:529)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:491)
at
io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905)
at java.lang.Thread.run(Thread.java:834)
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