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Posted to dev@tomcat.apache.org by bu...@apache.org on 2003/02/20 14:42:26 UTC
DO NOT REPLY [Bug 17243] New: -
Deadlock during classloading
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=17243
Deadlock during classloading
Summary: Deadlock during classloading
Product: Tomcat 4
Version: 4.0.1 Final
Platform: Other
OS/Version: Other
Status: NEW
Severity: Normal
Priority: Other
Component: Catalina
AssignedTo: tomcat-dev@jakarta.apache.org
ReportedBy: peter@conscius.com
During loading of a JSP file nothing seemed to happen for a minute, so I took a
thread dump using <ctrl><break>, which revealed the following:
[java] FOUND A JAVA LEVEL DEADLOCK:
[java] ----------------------------
[java] "HttpProcessor[80][4]":
[java] waiting to lock monitor 0x9244b4 (object 0x10e98400, a
org.apache.catalina.loader.WebappClassLoader$ResourceEntry),
[java] which is locked by "HttpProcessor[80][3]"
[java] "HttpProcessor[80][3]":
[java] waiting to lock monitor 0x924634 (object 0x103773f8, a
org.apache.catalina.loader.WebappClassLoader),
[java] which is locked by "HttpProcessor[80][4]"
[java] JAVA STACK INFORMATION FOR THREADS LISTED ABOVE:
[java] ------------------------------------------------
[java] Java Stack for "HttpProcessor[80][4]":
[java] ==========
[java] at
org.apache.catalina.loader.WebappClassLoader.findClassInternal
(WebappClassLoader.java:1533)
[java] - waiting to lock <10e98400> (a
org.apache.catalina.loader.WebappClassLoader$ResourceEntry)
[java] at org.apache.catalina.loader.WebappClassLoader.findClass
(WebappClassLoader.java:852)
[java] at org.apache.catalina.loader.WebappClassLoader.loadClass
(WebappClassLoader.java:1273)
[java] at org.apache.catalina.loader.WebappClassLoader.loadClass
(WebappClassLoader.java:1156)
[java] at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)
[java] at java.lang.ClassLoader.defineClass0(Native Method)
[java] at java.lang.ClassLoader.defineClass(ClassLoader.java:488)
[java] at java.security.SecureClassLoader.defineClass
(SecureClassLoader.java:106)
[java] at
org.apache.catalina.loader.WebappClassLoader.findClassInternal
(WebappClassLoader.java:1534)
[java] - locked <10e98440> (a
org.apache.catalina.loader.WebappClassLoader$ResourceEntry)
[java] at org.apache.catalina.loader.WebappClassLoader.findClass
(WebappClassLoader.java:852)
[java] at org.apache.catalina.loader.WebappClassLoader.loadClass
(WebappClassLoader.java:1273)
[java] at org.apache.catalina.loader.WebappClassLoader.loadClass
(WebappClassLoader.java:1156)
[java] at org.apache.jasper.servlet.JasperLoader.loadClass
(JasperLoader.java:198)
[java] at org.apache.jasper.servlet.JasperLoader.loadClass
(JasperLoader.java:132)
[java] at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)
[java] at java.lang.Class.newInstance0(Native Method)
[java] at java.lang.Class.newInstance(Class.java:232)
[java] at org.apache.jasper.servlet.JspServlet$JspServletWrapper.load
(JspServlet.java:139)
[java] at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary
(JspServlet.java:179)
[java] at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service
(JspServlet.java:189)
[java] at org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:382)
[java] at org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:474)
[java] at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
[java] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:247)
[java] at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
[java] at dk.netnord.cmd.servlet.RootFilter$FilterMethodContext.forward
(RootFilter.java:102)
[java] at dk.netnord.cmd.servlet.GetMethod.execute(GetMethod.java:77)
[java] at dk.netnord.cmd.servlet.RootFilter.doFilter
(RootFilter.java:52)
[java] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:213)
[java] at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
[java] at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:243)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
[java] at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
[java] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:943)
[java] at org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java:201)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
[java] at org.apache.catalina.valves.CertificatesValve.invoke
(CertificatesValve.java:246)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
[java] at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
[java] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:943)
[java] at org.apache.catalina.core.StandardContext.invoke
(StandardContext.java:2344)
[java] at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:164)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
[java] at org.apache.catalina.valves.ErrorDispatcherValve.invoke
(ErrorDispatcherValve.java:170)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
[java] at org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:170)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
[java] at org.apache.catalina.valves.AccessLogValve.invoke
(AccessLogValve.java:462)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
[java] at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
[java] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:943)
[java] at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java:163)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
[java] at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
[java] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:943)
[java] at org.apache.catalina.connector.http.HttpProcessor.process
(HttpProcessor.java:1011)
[java] at org.apache.catalina.connector.http.HttpProcessor.run
(HttpProcessor.java:1106)
[java] at java.lang.Thread.run(Thread.java:479)
[java] Java Stack for "HttpProcessor[80][3]":
[java] ==========
[java] at java.lang.ClassLoader.checkCerts(ClassLoader.java:530)
[java] - waiting to lock <103773f8> (a
org.apache.catalina.loader.WebappClassLoader)
[java] at java.lang.ClassLoader.defineClass(ClassLoader.java:482)
[java] at java.security.SecureClassLoader.defineClass
(SecureClassLoader.java:106)
[java] at
org.apache.catalina.loader.WebappClassLoader.findClassInternal
(WebappClassLoader.java:1534)
[java] - locked <10e98400> (a
org.apache.catalina.loader.WebappClassLoader$ResourceEntry)
[java] at org.apache.catalina.loader.WebappClassLoader.findClass
(WebappClassLoader.java:852)
[java] at org.apache.catalina.loader.WebappClassLoader.loadClass
(WebappClassLoader.java:1273)
[java] at org.apache.catalina.loader.WebappClassLoader.loadClass
(WebappClassLoader.java:1156)
[java] at org.apache.jasper.servlet.JasperLoader.loadClass
(JasperLoader.java:198)
[java] at org.apache.jasper.servlet.JasperLoader.loadClass
(JasperLoader.java:132)
[java] at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:310)
[java] at java.lang.Class.newInstance0(Native Method)
[java] at java.lang.Class.newInstance(Class.java:232)
[java] at org.apache.jasper.servlet.JspServlet$JspServletWrapper.load
(JspServlet.java:139)
[java] at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary
(JspServlet.java:179)
[java] at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service
(JspServlet.java:189)
[java] at org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:382)
[java] at org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:474)
[java] at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
[java] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:247)
[java] at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
[java] at dk.netnord.cmd.servlet.RootFilter$FilterMethodContext.forward
(RootFilter.java:102)
[java] at dk.netnord.cmd.servlet.GetMethod.execute(GetMethod.java:77)
[java] at dk.netnord.cmd.servlet.RootFilter.doFilter
(RootFilter.java:52)
[java] at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:213)
[java] at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:193)
[java] at org.apache.catalina.core.StandardWrapperValve.invoke
(StandardWrapperValve.java:243)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
[java] at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
[java] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:943)
[java] at org.apache.catalina.core.StandardContextValve.invoke
(StandardContextValve.java:201)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
[java] at org.apache.catalina.valves.CertificatesValve.invoke
(CertificatesValve.java:246)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
[java] at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
[java] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:943)
[java] at org.apache.catalina.core.StandardContext.invoke
(StandardContext.java:2344)
[java] at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:164)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
[java] at org.apache.catalina.valves.ErrorDispatcherValve.invoke
(ErrorDispatcherValve.java:170)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
[java] at org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:170)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
[java] at org.apache.catalina.valves.AccessLogValve.invoke
(AccessLogValve.java:462)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:564)
[java] at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
[java] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:943)
[java] at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java:163)
[java] at org.apache.catalina.core.StandardPipeline.invokeNext
(StandardPipeline.java:566)
[java] at org.apache.catalina.core.StandardPipeline.invoke
(StandardPipeline.java:472)
[java] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:943)
[java] at org.apache.catalina.connector.http.HttpProcessor.process
(HttpProcessor.java:1011)
[java] at org.apache.catalina.connector.http.HttpProcessor.run
(HttpProcessor.java:1106)
[java] at java.lang.Thread.run(Thread.java:479)
[java] Found 1 deadlock.
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