Re: [undertow-dev] Deadlock in JSP page on Wilflfy 8.0 Alpha 4 with umlauts

This should be fixed in Undertow upstream. The writer will now error out properly on unmappable characters. You will need to set a response charset of UTF8 (or some other appropriate charset) in order for this to work correctly. The only thing I am not sure about is if this should be a fatal error, or if we should just write the unmappable characters directly to the output. Stuart ----- Original Message ----- > From: "Stuart Douglas" <sdouglas(a)redhat.com&gt; > To: "Wolfgang Knauf" <wolfgang.knauf(a)gmx.de&gt; > Cc: undertow-dev(a)lists.jboss.org > Sent: Wednesday, 28 August, 2013 10:33:35 PM > Subject: Re: [undertow-dev] Deadlock in JSP page on Wilflfy 8.0 Alpha 4 with umlauts > > Thanks for reporting this, I will look into it. > > Stuart > > ----- Original Message ----- >> From: "Wolfgang Knauf" <wolfgang.knauf(a)gmx.de&gt; >> To: undertow-dev(a)lists.jboss.org >> Sent: Wednesday, 28 August, 2013 10:28:24 PM >> Subject: [undertow-dev] Deadlock in JSP page on Wilflfy 8.0 Alpha 4 with >> umlauts >> >> Hi all, >> >> hope this is the right place and the correct component to post a >> possible Undertow bug: >> I have a simple EAR application, used to test the JavaEE feature of a >> one-to-many-relationship. It contains an EJB jar and a WAR file, bundled >> in an EAR file. >> >> Whenever I add an umlaut in an input field and submit the form, WildFly >> hangs up while processing the request to display the result page (which >> should display a list of my entities). As this happens when generating >> the JSP page, I assume an Undertow issue. >> >> To reproduce: >> 1) deploy "KuchenZutat.ear" to WildFly (it uses the >> "java:jboss/datasources/ExampleDS", so no configuration changes needed). >> 2) browse to "http://localhost:8080/KuchenZutatWeb/" >> 3) Klick "Neu" >> 4) enter something with an umlaut, e.g. "Käsekuchen" >> 5) click OK >> Now the server hangs. >> >> It works when avoiding umlauts. >> >> Here are two stack traces, which I took by debugging the server with >> Eclipse and breaking into debugger at random times. Note that the thread >> name is different in the two stack traces - I took them at different >> server runs. >> "CoderResult.unmappableForLength()" seems to be the place for the >> endless loop. >> >> >> Thread [default task-3] (Suspended) >> owns: CoderResult$2 (id=285) >> HashMap<K,V>.hash(Object) line: not available >> HashMap<K,V>.getEntry(Object) line: not available >> HashMap<K,V>.get(Object) line: not available >> CoderResult$2(CoderResult$Cache).get(int) line: not available >> CoderResult$Cache.access$200(CoderResult$Cache, int) line: not available >> CoderResult.unmappableForLength(int) line: not available >> Surrogate$Parser.unmappableResult() line: not available >> ISO_8859_1$Encoder.encodeBufferLoop(CharBuffer, ByteBuffer) line: not >> available >> ISO_8859_1$Encoder.encodeLoop(CharBuffer, ByteBuffer) line: not available >> ISO_8859_1$Encoder(CharsetEncoder).encode(CharBuffer, ByteBuffer, >> boolean) line: not available >> ServletPrintWriter.write(CharBuffer) line: 58 >> ServletPrintWriter.write(char[], int, int) line: 76 >> ServletPrintWriterDelegate.write(char[], int, int) line: 96 >> JspWriterImpl.flushBuffer() line: 120 >> PageContextImpl.release() line: 188 >> JspFactoryImpl.internalReleasePageContext(PageContext) line: 115 >> JspFactoryImpl.releasePageContext(PageContext) line: 74 >> index.jsp line: not available >> index_jsp(HttpJspBase).service(HttpServletRequest, HttpServletResponse) >> line: 69 >> index_jsp(HttpServlet).service(ServletRequest, ServletResponse) line: 790 >> JspServletWrapper.service(HttpServletRequest, HttpServletResponse, >> boolean) line: 365 >> JspServlet.serviceJspFile(HttpServletRequest, HttpServletResponse, >> String, Throwable, boolean) line: 321 >> JspServlet.service(HttpServletRequest, HttpServletResponse) line: 254 >> JspServlet(HttpServlet).service(ServletRequest, ServletResponse) line: 790 >> ServletHandler.handleRequest(HttpServerExchange) line: 87 >> FilterHandler.handleRequest(HttpServerExchange) line: 82 >> ServletSecurityRoleHandler.handleRequest(HttpServerExchange) line: 54 >> ServletDispatchingHandler.handleRequest(HttpServerExchange) line: 36 >> SecurityContextAssociationHandler.handleRequest(HttpServerExchange) >> line: 78 >> PredicateHandler.handleRequest(HttpServerExchange) line: 25 >> PredicateHandler.handleRequest(HttpServerExchange) line: 25 >> ServletInitialHandler.dispatchRequest(HttpServerExchange, >> ServletRequestContext, ServletChain, DispatcherType) line: 196 >> ServletInitialHandler.dispatchToPath(HttpServerExchange, >> ServletPathMatch, DispatcherType) line: 139 >> RequestDispatcherImpl.forward(ServletRequest, ServletResponse) line: 156 >> KuchenEdit.jsp line: 40 >> KuchenEdit_jsp(HttpJspBase).service(HttpServletRequest, >> HttpServletResponse) line: 69 >> KuchenEdit_jsp(HttpServlet).service(ServletRequest, ServletResponse) >> line: 790 >> JspServletWrapper.service(HttpServletRequest, HttpServletResponse, >> boolean) line: 365 >> JspServlet.serviceJspFile(HttpServletRequest, HttpServletResponse, >> String, Throwable, boolean) line: 321 >> JspServlet.service(HttpServletRequest, HttpServletResponse) line: 254 >> JspServlet(HttpServlet).service(ServletRequest, ServletResponse) line: 790 >> ServletHandler.handleRequest(HttpServerExchange) line: 87 >> FilterHandler$FilterChainImpl.doFilter(ServletRequest, ServletResponse) >> line: 130 >> JsrWebSocketFilter.doFilter(ServletRequest, ServletResponse, >> FilterChain) line: 136 >> ManagedFilter.doFilter(ServletRequest, ServletResponse, FilterChain) >> line: 56 >> FilterHandler$FilterChainImpl.doFilter(ServletRequest, ServletResponse) >> line: 132 >> JsrWebSocketFilter.doFilter(ServletRequest, ServletResponse, >> FilterChain) line: 136 >> ManagedFilter.doFilter(ServletRequest, ServletResponse, FilterChain) >> line: 56 >> FilterHandler$FilterChainImpl.doFilter(ServletRequest, ServletResponse) >> line: 132 >> FilterHandler.handleRequest(HttpServerExchange) line: 85 >> ServletSecurityRoleHandler.handleRequest(HttpServerExchange) line: 56 >> ServletDispatchingHandler.handleRequest(HttpServerExchange) line: 36 >> SecurityContextAssociationHandler.handleRequest(HttpServerExchange) >> line: 78 >> SSLInformationAssociationHandler.handleRequest(HttpServerExchange) >> line: 113 >> AuthenticationCallHandler.handleRequest(HttpServerExchange) line: 52 >> ServletConfidentialityConstraintHandler(AbstractConfidentialityHandler).handleRequest(HttpServerExchange) >> line: 45 >> CachedAuthenticatedSessionHandler.handleRequest(HttpServerExchange) >> line: 65 >> SecurityInitialHandler.handleRequest(HttpServerExchange) line: 70 >> PredicateHandler.handleRequest(HttpServerExchange) line: 25 >> SecurityContextCreationHandler.handleRequest(HttpServerExchange) line: 54 >> PredicateHandler.handleRequest(HttpServerExchange) line: 25 >> ServletInitialHandler.handleFirstRequest(HttpServerExchange, >> ServletChain, ServletRequestContext, ServletRequest, ServletResponse) >> line: 207 >> ServletInitialHandler.dispatchRequest(HttpServerExchange, >> ServletRequestContext, ServletChain, DispatcherType) line: 194 >> ServletInitialHandler.access$000(ServletInitialHandler, >> HttpServerExchange, ServletRequestContext, ServletChain, DispatcherType) >> line: 72 >> ServletInitialHandler$1.handleRequest(HttpServerExchange) line: 128 >> HttpHandlers.executeRootHandler(HttpHandler, HttpServerExchange, >> boolean) line: 36 >> HttpServerExchange$1.run() line: 628 >> XnioWorker$TaskPool(ThreadPoolExecutor).runWorker(ThreadPoolExecutor$Worker) >> line: not available >> ThreadPoolExecutor$Worker.run() line: not available >> Thread.run() line: not available >> >> >> >> >> >> >> Thread [default task-8] (Suspended) >> CoderResult$Cache.access$200(CoderResult$Cache, int) line: not available >> CoderResult.unmappableForLength(int) line: not available >> Surrogate$Parser.unmappableResult() line: not available >> ISO_8859_1$Encoder.encodeBufferLoop(CharBuffer, ByteBuffer) line: not >> available >> ISO_8859_1$Encoder.encodeLoop(CharBuffer, ByteBuffer) line: not available >> ISO_8859_1$Encoder(CharsetEncoder).encode(CharBuffer, ByteBuffer, >> boolean) line: not available >> ServletPrintWriter.write(CharBuffer) line: 58 >> ServletPrintWriter.write(char[], int, int) line: 76 >> ServletPrintWriterDelegate.write(char[], int, int) line: 96 >> JspWriterImpl.flushBuffer() line: 120 >> PageContextImpl.release() line: 188 >> JspFactoryImpl.internalReleasePageContext(PageContext) line: 115 >> JspFactoryImpl.releasePageContext(PageContext) line: 74 >> Kuchen.jsp line: not available >> Kuchen_jsp(HttpJspBase).service(HttpServletRequest, >> HttpServletResponse) line: 69 >> Kuchen_jsp(HttpServlet).service(ServletRequest, ServletResponse) line: 790 >> JspServletWrapper.service(HttpServletRequest, HttpServletResponse, >> boolean) line: 365 >> JspServlet.serviceJspFile(HttpServletRequest, HttpServletResponse, >> String, Throwable, boolean) line: 321 >> JspServlet.service(HttpServletRequest, HttpServletResponse) line: 254 >> JspServlet(HttpServlet).service(ServletRequest, ServletResponse) line: 790 >> ServletHandler.handleRequest(HttpServerExchange) line: 87 >> FilterHandler.handleRequest(HttpServerExchange) line: 82 >> ServletSecurityRoleHandler.handleRequest(HttpServerExchange) line: 54 >> ServletDispatchingHandler.handleRequest(HttpServerExchange) line: 36 >> SecurityContextAssociationHandler.handleRequest(HttpServerExchange) >> line: 78 >> PredicateHandler.handleRequest(HttpServerExchange) line: 25 >> PredicateHandler.handleRequest(HttpServerExchange) line: 25 >> ServletInitialHandler.dispatchRequest(HttpServerExchange, >> ServletRequestContext, ServletChain, DispatcherType) line: 196 >> ServletInitialHandler.dispatchToPath(HttpServerExchange, >> ServletPathMatch, DispatcherType) line: 139 >> RequestDispatcherImpl.forward(ServletRequest, ServletResponse) line: 156 >> KuchenEdit.jsp line: 43 >> KuchenEdit_jsp(HttpJspBase).service(HttpServletRequest, >> HttpServletResponse) line: 69 >> KuchenEdit_jsp(HttpServlet).service(ServletRequest, ServletResponse) >> line: 790 >> JspServletWrapper.service(HttpServletRequest, HttpServletResponse, >> boolean) line: 365 >> JspServlet.serviceJspFile(HttpServletRequest, HttpServletResponse, >> String, Throwable, boolean) line: 321 >> JspServlet.service(HttpServletRequest, HttpServletResponse) line: 254 >> JspServlet(HttpServlet).service(ServletRequest, ServletResponse) line: 790 >> ServletHandler.handleRequest(HttpServerExchange) line: 87 >> FilterHandler$FilterChainImpl.doFilter(ServletRequest, ServletResponse) >> line: 130 >> JsrWebSocketFilter.doFilter(ServletRequest, ServletResponse, >> FilterChain) line: 136 >> ManagedFilter.doFilter(ServletRequest, ServletResponse, FilterChain) >> line: 56 >> FilterHandler$FilterChainImpl.doFilter(ServletRequest, ServletResponse) >> line: 132 >> JsrWebSocketFilter.doFilter(ServletRequest, ServletResponse, >> FilterChain) line: 136 >> ManagedFilter.doFilter(ServletRequest, ServletResponse, FilterChain) >> line: 56 >> FilterHandler$FilterChainImpl.doFilter(ServletRequest, ServletResponse) >> line: 132 >> FilterHandler.handleRequest(HttpServerExchange) line: 85 >> ServletSecurityRoleHandler.handleRequest(HttpServerExchange) line: 56 >> ServletDispatchingHandler.handleRequest(HttpServerExchange) line: 36 >> SecurityContextAssociationHandler.handleRequest(HttpServerExchange) >> line: 78 >> SSLInformationAssociationHandler.handleRequest(HttpServerExchange) >> line: 113 >> AuthenticationCallHandler.handleRequest(HttpServerExchange) line: 52 >> ServletConfidentialityConstraintHandler(AbstractConfidentialityHandler).handleRequest(HttpServerExchange) >> line: 45 >> CachedAuthenticatedSessionHandler.handleRequest(HttpServerExchange) >> line: 65 >> SecurityInitialHandler.handleRequest(HttpServerExchange) line: 70 >> PredicateHandler.handleRequest(HttpServerExchange) line: 25 >> SecurityContextCreationHandler.handleRequest(HttpServerExchange) line: 54 >> PredicateHandler.handleRequest(HttpServerExchange) line: 25 >> ServletInitialHandler.handleFirstRequest(HttpServerExchange, >> ServletChain, ServletRequestContext, ServletRequest, ServletResponse) >> line: 207 >> ServletInitialHandler.dispatchRequest(HttpServerExchange, >> ServletRequestContext, ServletChain, DispatcherType) line: 194 >> ServletInitialHandler.access$000(ServletInitialHandler, >> HttpServerExchange, ServletRequestContext, ServletChain, DispatcherType) >> line: 72 >> ServletInitialHandler$1.handleRequest(HttpServerExchange) line: 128 >> HttpHandlers.executeRootHandler(HttpHandler, HttpServerExchange, >> boolean) line: 36 >> HttpServerExchange$1.run() line: 628 >> XnioWorker$TaskPool(ThreadPoolExecutor).runWorker(ThreadPoolExecutor$Worker) >> line: not available >> ThreadPoolExecutor$Worker.run() line: not available >> Thread.run() line: not available >> >> >> Best regards >> >> Wolfgang Knauf >> 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