On Mon, Jun 24, 2013 at 07:20:12PM +0530, Raghavendra K T wrote:
> >@@ -1656,7 +1656,7 @@ static inline int bio_check_eod(struct bio *bio,
> >unsigned int nr_sectors)
> > if (maxsector) {
> > sector_t sector = bio->bi_sector;
> >
> >- if (maxsector < nr_sectors || maxsector - nr_sectors < sector) {
> >+ if (maxsector - nr_sectors < sector) {
If maxsector < nr_sectors, the subtraction will underflow making it a
very large number and fail to detect the invalid condition, no?
Thanks.
--
tejun
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