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Commit 26a05489 authored by Joel Fernandes's avatar Joel Fernandes Committed by Herbert Xu
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crypto: omap-sham - Map SG pages if they are HIGHMEM before accessing 



HIGHMEM pages may not be mapped so we must kmap them before accessing.
This resolves a random OOPs error that was showing up during OpenSSL SHA tests.

Signed-off-by: default avatarJoel Fernandes <joelf@ti.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 6e4e603a

drivers/crypto/omap-sham.c

+7 −1
Original line number Diff line number Diff line
@@ -636,11 +636,17 @@ static size_t omap_sham_append_buffer(struct omap_sham_reqctx *ctx, 
static size_t omap_sham_append_sg(struct omap_sham_reqctx *ctx)

{

	size_t count;

	const u8 *vaddr;



	while (ctx->sg) {

		vaddr = kmap_atomic(sg_page(ctx->sg));



		count = omap_sham_append_buffer(ctx,

				sg_virt(ctx->sg) + ctx->offset,

				vaddr + ctx->offset,

				ctx->sg->length - ctx->offset);



		kunmap_atomic((void *)vaddr);



		if (!count)

			break;

		ctx->offset += count;