2 JCK tests fails with VM chash starting from JDK8 b18 64 bit on linux x64.
api/java_awt/Image/ConvolveOp/index.html#FilterTesttestCase2
api/java_awt/Image/ConvolveOp/index.html#FilterTesttestCase1

java version "1.8.0-ea"
Java(TM) SE Runtime Environment (build 1.8.0-ea-b18)
Java HotSpot(TM) 64-Bit Server VM (build 23.0-b08, mixed mode)

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f422b90a8f8, pid=19260, tid=139922427627280
#
# JRE version: 8.0-b18
# Java VM: Java HotSpot(TM) 64-Bit Server VM (23.0-b08 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libmlib_image.so+0x18f8] mlib_ImageSet+0x18
#
# Failed to write core dump. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /export/jdk/hs_err_pid19260.log
Phoning home...
Using server: 10.161.186.18, port 4711
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

See more in comments:
The same problem with api/java_awt/Image/AffineTransformOp/index.html#FilterTest1 :

# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007fcf6c1188f8, pid=15529, tid=140528867383040
#
# JRE version: 8.0-b30
# Java VM: Java HotSpot(TM) 64-Bit Server VM (24.0-b02 mixed mode linux-amd64 compressed oops)
# Problematic frame:
# C [libmlib_image.so+0x18f8] mlib_ImageSet+0x18