While looking for other occurrences of the bug being fixed by 

6600199: (process) Decode system error messages using platform encoding (unix)

I noticed these uses of strerror

./solaris/native/sun/tools/attach/SolarisVirtualMachine.c:76:		char* msg = strdup(strerror(err));
./solaris/native/sun/tools/attach/SolarisVirtualMachine.c:126:	    char* msg = strdup(strerror(res));
./solaris/native/sun/tools/attach/LinuxVirtualMachine.c:179:		char* msg = strdup(strerror(err));
./solaris/native/sun/tools/attach/LinuxVirtualMachine.c:381:            char* msg = strdup(strerror(res));

that appear to be incorrect.  I suggest replacing 

		char* msg = strdup(strerror(err));
	        JNU_ThrowIOException(env, msg);
		if (msg != NULL) {
		    free(msg);
		}

with a call to JNU_ThrowIOExceptionWithLastError, 
which is simpler and more correct.