Merge "lmkd: Protect against buffer overflow" into pi-dev

#define ARRAY_SIZE(x)   (sizeof(x) / sizeof(*(x)))

#define EIGHT_MEGA (1 << 23)

#define STRINGIFY(x) STRINGIFY_INTERNAL(x)

#define STRINGIFY_INTERNAL(x) #x

/* default to old in-kernel interface if no memory pressure events */

static int use_inkernel_interface = 1;

static bool has_inkernel_module;

#ifdef LMKD_LOG_STATS

static void memory_stat_parse_line(char *line, struct memory_stat *mem_st) {

    char key[LINE_MAX];

    char key[LINE_MAX + 1];

    int64_t value;

    sscanf(line,"%s  %" SCNd64 "", key, &value);

    sscanf(line, "%" STRINGIFY(LINE_MAX) "s  %" SCNd64 "", key, &value);

    if (strcmp(key, "total_") < 0) {

        return;