INTEGER_OVERFLOW in `src/hdr_histogram.c`

[VoroninArtemii]

The array elements are summed in function void hdr_reset_internal_counters(struct hdr_histogram* h). However, both the array elements and the summation variable have the same int64_t data type:

HdrHistogram_c/src/hdr_histogram.c

Line 278 in 8dcce8f

int64_t observed_total_count = 0;

HdrHistogram_c/src/hdr_histogram.c

Line 283 in 8dcce8f

int64_t count_at_index;

And then summation:

HdrHistogram_c/src/hdr_histogram.c

Line 287 in 8dcce8f

observed_total_count += count_at_index;

Also, no overflow checks were found in the function itself.

Found by Linux Verification Center (portal.linuxtesting.ru) with SVACE.

Author A. Voronin.