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crypto: octeontx2 - prevent underflow in get_cores_bmap() 

If we're going to cap "eng_grp->g->engs_num" upper bounds then we should
cap the lower bounds as well.

Fixes: 43ac0b824f ("crypto: octeontx2 - load microcode and create engine groups")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Dan Carpenter 2021-12-17 10:13:32 +03:00 committed by Herbert Xu
parent 3438e7220b
commit 10371b6212
1 changed files with 2 additions and 1 deletions
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3
drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c
View File

@ -29,7 +29,8 @@ static struct otx2_cpt_bitmap get_cores_bmap(struct device *dev,
bool found = false;
int i;
if (eng_grp->g->engs_num > OTX2_CPT_MAX_ENGINES) {
if (eng_grp->g->engs_num < 0 ||
eng_grp->g->engs_num > OTX2_CPT_MAX_ENGINES) {
dev_err(dev, "unsupported number of engines %d on octeontx2\n",
eng_grp->g->engs_num);
return bmap;