PQ78536: AdminConsole jvm process crashes with a jit crash when security is enabled.

 A fix is available

***SUPERCEDED*** 1.3.1 Java SDK, Java Tech Edition for WebSphere v5



APAR status
Closed as program error.

Error description
After global security is enabled for WSAS, stop and
restart server1; login to the admin console with the configured
user id and password.  Leave the adminconsole screen idle for
15-20 minutes; try using it again, it will lock up and dump the
core with a sigsev error which crashes the adminconsole jvm.
Sometimes the crash occurs justlogging into the adminconsole.

Disabling security prevents the problem, as does disabling
the jit compiler for the adminconsole.

The javacore shows that the crash is due to
signal 11 received
and also shows that
SIGSEGV received in ?? at 0x14 in ??. Processing terminated.

SIGSEGV is a very common signal, so this symptom alone is far
from adequate to match this particular APAR.

The Current Thread Details of the javacore that the reporting
customer sent gives no java or native stack information.
The following is logged
**** Exception 2 received when dumping Java stack.

The java command line of the javacore will show that the java
class that was used to run this java program is
com.ibm.ws.bootstrap.WSLauncher com.ibm.ws.runtime.WsServer


****************************************************************
* USERS AFFECTED: All users of IBM WebSphere Application       *
*                 Server 5.0.0 who use global security via the *
*                 OS with the adminconsole of WSAS.            *
****************************************************************
* PROBLEM DESCRIPTION: A problem with the Java Virtual         *
*                      Machine ( JVM )  results in WebSphere   *
*                      adminconsole crashing with SIGSEGV.     *
****************************************************************
Local fix
Disable security or disable the jit compiler.
Customer was also able to prevent the jit crash by disabling the
NMMI2JIT, see Hint and Tip 1116526 for details.
Problem summary
****************************************************************
* USERS AFFECTED: All users of IBM WebSphere Application       *
*                 Server 5.0.0 with global security enabled    *
*                 for LocalOS on the Linux Intel or 390        *
*                 platform.                                    *
****************************************************************
* PROBLEM DESCRIPTION: The Admin Console Java Virtual Machine  *
*                      ( JVM ) process crashes with a          *
*                      Just-In-Time ( JIT ) compiler crash     *
*                      when security is enabled.               *
****************************************************************
* RECOMMENDATION:                                              *
****************************************************************
The problem occurs when global security is enabled for
WebSphere, and then the user logs in to the admin console. Then
leaves the console idle for 15 to 20 minutes, when the user
tries to use the console again, it will lock up and dump the
javacore with a sigsev error which crashes the Admin Console
JVM.  Sometimes the crash occurs just by logging into the
Admin Console.
Problem conclusion
Disabling security or disabling the JIT compiler for the
Admin Console process prevents this problem. This is
fixed in jdk cxia131-20030719 .
Temporary fix Comments
APAR information
APAR number PQ78536
Reported component name WAS BASE 5.0
Reported component ID 5630A3600
Reported release 003
Status CLOSED PER
PE NoPE
HIPER NoHIPER
Special Attention NoSpecatt
Submitted date 2003-09-16
Closed date 2003-09-25
Last modified date 2003-09-25

APAR is sysrouted FROM one or more of the following:

APAR is sysrouted TO one or more of the following:

Modules/Macros
JDK          

Publications Referenced

Fix information

Applicable component levels
R003 PSY    UP
R00I PSY    UP


Document Information


Product categories: Software > Application Servers > Distributed Application & Web Servers > WebSphere Application Server > General
Operating system(s):
Software version: 003
Software edition:
Reference #: PQ78536
IBM Group: Software Group
Modified date: Sep 25, 2003