Messages in this thread Patch in this message | | | From | Louis Langholtz <> | Subject | [PATCH] kernel: avoid overflow in cmp_range | Date | Wed, 14 Jan 2015 13:31:18 -0700 |
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Avoid overflow possibility.
Signed-off-by: Louis Langholtz <lou_langholtz@me.com> --- diff --git a/kernel/range.c b/kernel/range.c index 322ea8e..06d9ee7 100644 --- a/kernel/range.c +++ b/kernel/range.c @@ -113,12 +113,16 @@ static int cmp_range(const void *x1, const void *x2) { const struct range *r1 = x1; const struct range *r2 = x2; - s64 start1, start2; + u64 start1, start2;
start1 = r1->start; start2 = r2->start;
- return start1 - start2; + if (start1 < start2) + return -1; + if (start1 > start2) + return 1; + return 0; }
int clean_sort_range(struct range *range, int az)
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