#vulnerable code 
                                public static Memory sysctl(String name) {
        IntByReference size = new IntByReference();
        if (0 != SystemB.INSTANCE.sysctlbyname(name, null, size, null, 0)) {
            LOG.error(SYSCTL_FAIL, name, Native.getLastError());
            return null;
        }
        Memory m = new Memory(size.getValue());
        if (0 != SystemB.INSTANCE.sysctlbyname(name, m, size, null, 0)) {
            LOG.error(SYSCTL_FAIL, name, Native.getLastError());
            return null;
        }
        return m;
    } 
                            #location 8 
                            #vulnerability type INTERFACE_NOT_THREAD_SAFE
#fixed code
                                public static Memory sysctl(String name) {
        IntByReference size = new IntByReference();
        if (0 != FreeBsdLibc.INSTANCE.sysctlbyname(name, null, size, null, 0)) {
            LOG.error(SYSCTL_FAIL, name, Native.getLastError());
            return null;
        }
        Memory m = new Memory(size.getValue());
        if (0 != FreeBsdLibc.INSTANCE.sysctlbyname(name, m, size, null, 0)) {
            LOG.error(SYSCTL_FAIL, name, Native.getLastError());
            return null;
        }
        return m;
    }