From 5db0bf563afda8f90d71c31659fd9498f048a7cf Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Mon, 21 Nov 2016 16:26:19 +0800 Subject: vmalloced stacks and scatterwalk_map_and_copy() 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 Signed-off-by: Herbert Xu --- crypto/scatterwalk.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'crypto') diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c index 52ce17a3dd63..c16c94f88733 100644 --- a/crypto/scatterwalk.c +++ b/crypto/scatterwalk.c @@ -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); -- cgit v1.2.3