[jboss-user] [JBoss Seam] - Critical bug with WebSphere

Environment: IMB WebSphere 6.1.0.11 D:\Program Files\IBM\WebSphere61\AppServer\java\jre\bin>java.exe -version java version "1.5.0" Java(TM) 2 Runtime Environment, Standard Edition (build pwi32devifx-20070608 (SR5+IY99712)) IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 Windows XP x86-32 j9vmwi3223-20070426 (JIT enabled) J9VM - 20070420_12448_lHdSMR JIT - 20070419_1806_r8 GC - 200704_19) JCL - 20070608 Application has some JavaBeans in Session scope. After some crazy stress tests it hangs. Reason - ReentranceLock in J9 can work in infinite loop. Description of similar bug in Sun JVM - http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6241823 The worst thing - the whole web server hangs and 100% uses processor. Possible way to avoid it - don't set to true private ReentrantLock lock = new ReentrantLock(true); in SynchronizationInterceptor. How to reproduce bug in WebSphere - run next code: | Semaphore sem = new Semaphore(0,true); | System.out.println(sem.tryAcquire(100,TimeUnit.MILLISECONDS)); | System.out.println(sem.tryAcquire(100,TimeUnit.MILLISECONDS)); | System.out.println("OK!"); In Sun JVM it works ok, in IBM J9 - hangs. Should I post a JIRA issue? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4110253#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...