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

Thursday, 29 August 2013

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
 > 
 > _______________________________________________
 > undertow-dev mailing list
 > undertow-dev(a)lists.jboss.org
 > https://lists.jboss.org/mailman/listinfo/undertow-dev

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