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Commit bde9079f authored by Horia Geant?'s avatar Horia Geant? Committed by Herbert Xu
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crypto: talitos - avoid out of bound scatterlist iterator



Check return value of scatterlist_sg_next(), i.e. don't rely solely
on number of bytes to be processed or number of scatterlist entries.

Signed-off-by: default avatarHoria Geanta <horia.geanta@freescale.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 69d9cd8c
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+2 −2
Original line number Diff line number Diff line
@@ -1065,7 +1065,7 @@ static int sg_to_link_tbl(struct scatterlist *sg, int sg_count,
{
	int n_sg = sg_count;

	while (n_sg--) {
	while (sg && n_sg--) {
		to_talitos_ptr(link_tbl_ptr, sg_dma_address(sg), 0);
		link_tbl_ptr->len = cpu_to_be16(sg_dma_len(sg));
		link_tbl_ptr->j_extent = 0;
@@ -1254,7 +1254,7 @@ static int sg_count(struct scatterlist *sg_list, int nbytes, bool *chained)
	int sg_nents = 0;

	*chained = false;
	while (nbytes > 0) {
	while (nbytes > 0 && sg) {
		sg_nents++;
		nbytes -= sg->length;
		if (!sg_is_last(sg) && (sg + 1)->length == 0)