Commit 7aff7d0a authored by LABBE Corentin's avatar LABBE Corentin Committed by Herbert Xu

crypto: amcc - check return value of sg_nents_for_len

The sg_nents_for_len() function could fail, this patch add a check for
its return value.
Signed-off-by: default avatarLABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent f9970c28
...@@ -781,6 +781,10 @@ u32 crypto4xx_build_pd(struct crypto_async_request *req, ...@@ -781,6 +781,10 @@ u32 crypto4xx_build_pd(struct crypto_async_request *req,
/* figure how many gd is needed */ /* figure how many gd is needed */
num_gd = sg_nents_for_len(src, datalen); num_gd = sg_nents_for_len(src, datalen);
if ((int)num_gd < 0) {
dev_err(dev->core_dev->device, "Invalid number of src SG.\n");
return -EINVAL;
}
if (num_gd == 1) if (num_gd == 1)
num_gd = 0; num_gd = 0;
......
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