Random crashes are observed in java.util.zip.Deflater running runThese. Examples:

Stack: [0x00007f73f94dc000,0x00007f73f95dd000], sp=0x00007f73f95da270, free space=1016k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [libz.so.1+0x64f7] double+0x87

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j java.util.zip.Deflater.deflateBytes(J[BII)I+0
j java.util.zip.Deflater.deflate([BII)I+59
j javasoft.sqe.tests.api.java.util.zip.Deflater.DeflaterTests.compress(Ljava/util/zip/Deflater;[BII)[B+40
j javasoft.sqe.tests.api.java.util.zip.Deflater.DeflaterTests.LevelTest1()Ljavasoft/sqe/javatest/Status;+68
v ~StubRoutines::call_stub
j sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+0
j sun.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+87
J sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
j java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+161
j javasoft.sqe.javatest.lib.MultiTest.invokeTestCase(Ljava/lang/reflect/Method;)Ljavasoft/sqe/javatest/Status;+8
j javasoft.sqe.javatest.lib.MultiTest.run([Ljava/lang/String;Ljava/io/PrintWriter;Ljava/io/PrintWriter;)Ljavasoft/sqe/javatest/Status;+152
j javasoft.sqe.javatest.lib.MultiTest.run([Ljava/lang/String;Ljava/io/PrintStream;Ljava/io/PrintStream;)Ljavasoft/sqe/javatest/Status;+40
j javasoft.sqe.tests.api.java.util.zip.Deflater.DeflaterTests.main([Ljava/lang/String;)V+16
v ~StubRoutines::call_stub
j sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+0
j sun.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+87
J sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;
j java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+161
j runThese$TestRunner$1.run()V+9
v ~StubRoutines::call_stub


Stack: [0x00007fbe83cfd000,0x00007fbe83dfe000], sp=0x00007fbe83dfb568, free space=1017k
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
C [libc.so.6+0x7f951] unsigned long+0xe1

Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
j java.util.zip.Deflater.setDictionary(J[BII)V+0
j java.util.zip.Deflater.setDictionary([BII)V+58
j java.util.zip.Deflater.setDictionary([B)V+5
j javasoft.sqe.tests.api.java.util.zip.Deflater.MiscTests.Deflater2012()Ljavasoft/sqe/javatest/Status;+18
v ~StubRoutines::call_stub
j sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+0
j sun.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+87
j sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+6
j java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+161
j javasoft.sqe.javatest.lib.MultiTest.invokeTestCase(Ljava/lang/reflect/Method;)Ljavasoft/sqe/javatest/Status;+8
j javasoft.sqe.javatest.lib.MultiTest.run([Ljava/lang/String;Ljava/io/PrintWriter;Ljava/io/PrintWriter;)Ljavasoft/sqe/javatest/Status;+152
j javasoft.sqe.javatest.lib.MultiTest.run([Ljava/lang/String;Ljava/io/PrintStream;Ljava/io/PrintStream;)Ljavasoft/sqe/javatest/Status;+40
j javasoft.sqe.tests.api.java.util.zip.Deflater.MiscTests.main([Ljava/lang/String;)V+16
v ~StubRoutines::call_stub
j sun.reflect.NativeMethodAccessorImpl.invoke0(Ljava/lang/reflect/Method;Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+0
j sun.reflect.NativeMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+87
j sun.reflect.DelegatingMethodAccessorImpl.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+6
j java.lang.reflect.Method.invoke(Ljava/lang/Object;[Ljava/lang/Object;)Ljava/lang/Object;+161
j runThese$TestRunner$1.run()V+9
v ~StubRoutines::call_stub