Commit c8467f7a authored Nov 21, 2016 by Herbert Xu

crypto: scatterwalk - Remove unnecessary aliasing check in map_and_copy



The aliasing check in map_and_copy is no longer necessary because
the IPsec ESP code no longer provides an IV that points into the
actual request data.  As this check is now triggering BUG checks
due to the vmalloced stack code, I'm removing it.

Reported-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

parent 8acf7a10

crypto/scatterwalk.c

+0 −4

Original line number	Diff line number	Diff line
		@@ -68,10 +68,6 @@ void scatterwalk_map_and_copy(void buf, struct scatterlist sg,

		sg = scatterwalk_ffwd(tmp, sg, start);

		if (sg_page(sg) == virt_to_page(buf) &&
		sg->offset == offset_in_page(buf))
		return;

		scatterwalk_start(&walk, sg);
		scatterwalk_copychunks(buf, &walk, nbytes, out);
		scatterwalk_done(&walk, out, 0);

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