@Contended: SIGBUS during class parsing

in vm/runtime/contended/tests/genereated/* tests vm has crashed:

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGBUS (0xa) at pc=0xffffffff7da44064, pid=607, tid=2
#
# JRE version: Java(TM) SE Runtime Environment (8.0-b89) (build 1.8.0-ea-b89)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.0-b31 mixed mode solaris-sparc compressed oops)
# Problematic frame:
# V [libjvm.so+0x244064] void Chunk::chop()+0xc
#
# Core dump written. Default location: /export/local/aurora/sandbox/results/ResultDir/GeneratedClassTest_100_x_512_20_0.75d/core or core.607
#
# If you would like to submit a bug report, please visit:
# http://bugreport.sun.com/bugreport/crash.jsp
#

Stack: [0xffffffff7ba00000,0xffffffff7bb00000], sp=0xffffffff7bafcb60, free space=1010k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V [libjvm.so+0x244064] void Chunk::chop()+0xc
V [libjvm.so+0x2441e4] void Chunk::next_chop()+0xc
V [libjvm.so+0x60f4d0] HandleMark::~HandleMark()+0x28
V [libjvm.so+0x42042c] instanceKlassHandle ClassFileParser::parseClassFile(Symbol*,ClassLoaderData*,Handle,KlassHandle,GrowableArray<Handle>*,TempNewSymbol&,bool,Thread*)+0x16dc
V [libjvm.so+0xc06950] Klass*SystemDictionary::resolve_from_stream(Symbol*,Handle,Handle,ClassFileStream*,bool,Thread*)+0x258
V [libjvm.so+0x772f84] JVM_DefineClassWithSource+0x490
C [libjava.so+0x144a8] Java_java_lang_ClassLoader_defineClass1+0x248
j java.lang.ClassLoader.defineClass1(Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;+1597316
j java.lang.ClassLoader.defineClass1(Ljava/lang/String;[BIILjava/security/ProtectionDomain;Ljava/lang/String;)Ljava/lang/Class;+0
j java.lang.ClassLoader.defineClass(Ljava/lang/String;[BIILjava/security/ProtectionDomain;)Ljava/lang/Class;+27
j java.security.SecureClassLoader.defineClass(Ljava/lang/String;[BIILjava/security/CodeSource;)Ljava/lang/Class;+12
j java.net.URLClassLoader.defineClass(Ljava/lang/String;Lsun/misc/Resource;)Ljava/lang/Class;+220
j java.net.URLClassLoader.access$100(Ljava/net/URLClassLoader;Ljava/lang/String;Lsun/misc/Resource;)Ljava/lang/Class;+3
j java.net.URLClassLoader$1.run()Ljava/lang/Class;+43
j java.net.URLClassLoader$1.run()Ljava/lang/Object;+1
v ~StubRoutines::call_stub
V [libjvm.so+0x6b3550] void JavaCalls::call_helper(JavaValue*,methodHandle*,JavaCallArguments*,Thread*)+0xa58
V [libjvm.so+0x777364] JVM_DoPrivileged+0xae4
C [libjava.so+0x1016c] Java_java_security_AccessController_doPrivileged__Ljava_security_PrivilegedExceptionAction_2Ljava_security_AccessControlContext_2+0x1c
j java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+31646
j java.security.AccessController.doPrivileged(Ljava/security/PrivilegedExceptionAction;Ljava/security/AccessControlContext;)Ljava/lang/Object;+0
j java.net.URLClassLoader.findClass(Ljava/lang/String;)Ljava/lang/Class;+13
j java.lang.ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+70
j sun.misc.Launcher$AppClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+36
j java.lang.ClassLoader.loadClass(Ljava/lang/String;Z)Ljava/lang/Class;+38
j java.lang.ClassLoader.loadClass(Ljava/lang/String;)Ljava/lang/Class;+3
j vm.runtime.contended.share.ContendedClassBuilder.build(Ljava/util/Map;)[Ljava/lang/Class;+336
j vm.runtime.contended.share.tests.GeneratedClassTest.main([Ljava/lang/String;)V+27
v ~StubRoutines::call_stub
V [libjvm.so+0x6b3550] void JavaCalls::call_helper(JavaValue*,methodHandle*,JavaCallArguments*,Thread*)+0xa58
V [libjvm.so+0x707bbc] jni_CallStaticVoidMethod+0x910
C [libjli.so+0x7298] JavaMain+0x778