I Have ubuntu 12.04 sun java 6.0.35 tomcat 7.0.27 liferay 6.1.1 GA2, I notice that the error it´s alway at mmap and zip file.
Have a dual core server with 4g in ram
JAVA_OPTS="-Dfile.encoding=UTF8 -Dorg.apache.catalina.loader.WebappClassLoader.E
NABLE_CLEAR_REFERENCES=false -Duser.timezone=America/Hermosillo -Xmx2048m -XX:Ma
xPermSize=512m -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEn
abled -XX:SurvivorRatio=20 -XX

arallelGCThreads=2"
mmap failed for CEN and END part of zip file#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0xb371261b, pid=9680, tid=3091704640
#
# JRE version: 6.0_35-b10
# Java VM: Java HotSpot(TM) Server VM (20.10-b01 mixed mode linux-x86 )
# Problematic frame:
# j java.util.jar.JarFile.getJarEntry(Ljava/lang/String;)Ljava/util/jar/JarEntry;+2
#
# An error report file with more information is saved as:
# /opt/tomcat/webapps/ROOT/html/promos/hs_err_pid9680.log
#
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
#
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