Commit 5124bc96 authored by Herbert Xu's avatar Herbert Xu
Browse files

crypto: caam - Pad SG length when allocating hash edesc 



Because hardware will read in multiples of 4 SG entries, ensure
the allocated length is always padded.  This was already done
by some callers of ahash_edesc_alloc, but ahash_digest was conspicuously
missing.

In any case, doing it in the allocation function ensures that the
memory is always there.

Reported-by: default avatarGuangwu Zhang <guazhang@redhat.com>
Fixes: a5e5c133 ("crypto: caam - fix S/G table passing page boundary")
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent ce212d2a

drivers/crypto/caam/caamhash.c

+1 −0
Original line number Diff line number Diff line
@@ -708,6 +708,7 @@ static struct ahash_edesc *ahash_edesc_alloc(struct ahash_request *req, 
		       GFP_KERNEL : GFP_ATOMIC;

	struct ahash_edesc *edesc;



	sg_num = pad_sg_nents(sg_num);

	edesc = kzalloc(struct_size(edesc, sec4_sg, sg_num), flags);

	if (!edesc)

		return NULL;