Showing posts with label jdk. Show all posts
Showing posts with label jdk. Show all posts

Tuesday, November 29, 2016

JVM crash due to Loop Unswitching

During performance testing execution on my application stack I came across following fault multiple times. My application stack uses Apache Tomcat 7 and JDK 1.7.0_55.

After investigation found that this is a bug in JDK JIT compiler which is fixed in later version started from update 60.

I had to get the release out and could not afford to upgrade the JDK version so used "-XX:-LoopUnswitching" switch to disable the loop unswitching.

#
# A fatal error has been detected by the Java Runtime Environment:
#
#  SIGSEGV (0xb) at pc=0x00002aaab0363f9e, pid=28321, tid=1102854464
#
# JRE version: 7.0_25-b15
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.25-b01 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# J  org.apache.http.impl.cookie.BestMatchSpec.formatCookies(Ljava/util/List;)Ljava/util/List;
#
# An error report file with more information is saved as:
# /tmp/hs_err_pid28321.log
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.sun.com/bugreport/crash.jsp
#