prefilter/profile: validate end > start

Seen underflow issues on profiling on arm (gettimeofday based.
7 years ago · 611a2aca9f
parent 08971f1841
commit 611a2aca9f
1 changed files with 2 additions and 1 deletions
--- a/src/util-profiling.h
+++ b/src/util-profiling.h
@ -300,7 +300,8 @@ PktProfiling *SCProfilePacketStart(void);
        ticks_start)                                                \
    {                                                               \
        uint64_t ticks_end = UtilCpuGetTicks();                     \
-        (p)->profile->prefilter.engines[(profile_id)].ticks_spent += (ticks_end - ticks_start);    \
+        if (ticks_end > ticks_start)                                \
+            (p)->profile->prefilter.engines[(profile_id)].ticks_spent += (ticks_end - ticks_start);    \
        ticks_start = 0;                                            \
    }                                                               \