Commit 10371b62 authored by Dan Carpenter's avatar Dan Carpenter Committed by Herbert Xu
Browse files

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: 43ac0b82 ("crypto: octeontx2 - load microcode and create engine groups")
Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 3438e722

drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c

+2 −1
Original line number Diff line number Diff line
@@ -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;