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crypto: caam - Pad SG length when allocating hash edesc

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[ Upstream commit 5124bc9616 ]

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: Guangwu Zhang <guazhang@redhat.com>
Fixes: a5e5c13398 ("crypto: caam - fix S/G table passing page boundary")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Herbert Xu 2024-09-12 17:57:13 +08:00 committed by Greg Kroah-Hartman
parent 318f70857c
commit 21b4fa3bff
1 changed files with 1 additions and 0 deletions
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1
drivers/crypto/caam/caamhash.c
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@ -708,6 +708,7 @@ static struct ahash_edesc *ahash_edesc_alloc(struct ahash_request *req,
GFP_KERNEL : GFP_ATOMIC; GFP_KERNEL : GFP_ATOMIC;
struct ahash_edesc *edesc; struct ahash_edesc *edesc;
sg_num = pad_sg_nents(sg_num);
edesc = kzalloc(struct_size(edesc, sec4_sg, sg_num), flags); edesc = kzalloc(struct_size(edesc, sec4_sg, sg_num), flags);
if (!edesc) if (!edesc)
return NULL; return NULL;