Commit 63832a0c authored May 27, 2020 by Tero Kristo Committed by Herbert Xu Jun 04, 2020

crypto: omap-sham - fix very small data size handling



With very small data sizes, the whole data can end up in the xmit
buffer. This code path does not set the sg_len properly which causes the
core dma framework to crash. Fix by adding the proper size in place.
Also, the data length must be a multiple of block-size, so extend the
DMA data size while here.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent 6395166d

drivers/crypto/omap-sham.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -752,9 +752,11 @@ static int omap_sham_align_sgs(struct scatterlist *sg,

		if (!sg \|\| !sg->length \|\| !nbytes) {
		if (bufcnt) {
		bufcnt = DIV_ROUND_UP(bufcnt, bs) * bs;
		sg_init_table(rctx->sgl, 1);
		sg_set_buf(rctx->sgl, rctx->dd->xmit_buf, bufcnt);
		rctx->sg = rctx->sgl;
		rctx->sg_len = 1;
		}

		return 0;

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