From: Brian Norris Date: Tue, 22 Jul 2014 02:07:02 +0000 (-0700) Subject: mtd: mtdswap: fix integer overflow X-Git-Tag: v3.18-rc1~25^2~33^2~12 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8c3f3f1d7941bcb25590b784f84accd7dcb44ba3;p=karo-tx-linux.git mtd: mtdswap: fix integer overflow Caught by Coverity. Signed-off-by: Brian Norris --- diff --git a/drivers/mtd/mtdswap.c b/drivers/mtd/mtdswap.c index 0ec96cd5dc78..48cf6f98df44 100644 --- a/drivers/mtd/mtdswap.c +++ b/drivers/mtd/mtdswap.c @@ -1474,7 +1474,7 @@ static void mtdswap_add_mtd(struct mtd_blktrans_ops *tr, struct mtd_info *mtd) } eblocks = mtd_div_by_eb(use_size, mtd); - use_size = eblocks * mtd->erasesize; + use_size = (uint64_t)eblocks * mtd->erasesize; bad_blocks = mtdswap_badblocks(mtd, use_size); eavailable = eblocks - bad_blocks;