Use threadsafe time functions.

src/alert-debuglog.c

@@ -59,7 +59,8 @@ typedef struct AlertDebugLogThread_ {
 
 static void CreateTimeString (const struct timeval *ts, char *str, size_t size) {
     time_t time = ts->tv_sec;
-    struct tm *t = gmtime(&time);
+    struct tm local_tm;
+    struct tm *t = gmtime_r(&time, &local_tm);
     uint32_t sec = ts->tv_sec % 86400;
 
     snprintf(str, size, "%02d/%02d/%02d-%02d:%02d:%02d.%06u",

src/alert-fastlog.c

@@ -88,7 +88,8 @@ typedef struct AlertFastLogThread_ {
 
 static void CreateTimeString (const struct timeval *ts, char *str, size_t size) {
     time_t time = ts->tv_sec;
-    struct tm *t = gmtime(&time);
+    struct tm local_tm;
+    struct tm *t = gmtime_r(&time, &local_tm);
     uint32_t sec = ts->tv_sec % 86400;
 
     snprintf(str, size, "%02d/%02d/%02d-%02d:%02d:%02d.%06u",

src/counters.c

@@ -697,7 +697,8 @@ static int SCPerfOutputCounterFileIface()
     memset(&tval, 0, sizeof(struct timeval));
 
     gettimeofday(&tval, NULL);
-    tms = (struct tm *)localtime(&tval.tv_sec);
+    struct tm local_tm;
+    tms = (struct tm *)localtime_r(&tval.tv_sec, &local_tm);
 
     fprintf(sc_perf_op_ctx->fp, "----------------------------------------------"
             "---------------------\n");

src/log-httplog.c

@@ -76,7 +76,8 @@ typedef struct LogHttpLogThread_ {
 
 static void CreateTimeString (const struct timeval *ts, char *str, size_t size) {
     time_t time = ts->tv_sec;
-    struct tm *t = gmtime(&time);
+    struct tm local_tm;
+    struct tm *t = gmtime_r(&time, &local_tm);
     uint32_t sec = ts->tv_sec % 86400;
 
     snprintf(str, size, "%02d/%02d/%02d-%02d:%02d:%02d.%06u",

src/util-debug.c

@@ -311,7 +311,8 @@ SCError SCLogMessage(SCLogLevel log_level, char **msg, const char *file,
                 temp_fmt[0] = '\0';
 
                 gettimeofday(&tval, NULL);
-                tms = localtime(&tval.tv_sec);
+                struct tm local_tm;
+                tms = localtime_r(&tval.tv_sec, &local_tm);
 
                 cw = snprintf(temp, SC_LOG_MAX_LOG_MSG_LEN - (temp - *msg),
                               "%s%d/%d/%04d -- %02d:%02d:%02d",