From 8daa32b9357de54eb68d78bbe668d52a83d24e71 Mon Sep 17 00:00:00 2001 From: Harsh Jain Date: Thu, 11 Jan 2018 16:45:49 +0530 Subject: [PATCH] crypto: chelsio - check for sg null Add warning message if sg is NULL after skipping bytes. Reported-by: Dan Carpenter Signed-off-by: Harsh Jain Signed-off-by: Herbert Xu --- drivers/crypto/chelsio/chcr_algo.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c index f6b1161..280377f 100644 --- a/drivers/crypto/chelsio/chcr_algo.c +++ b/drivers/crypto/chelsio/chcr_algo.c @@ -574,7 +574,8 @@ static void ulptx_walk_add_sg(struct ulptx_walk *walk, skip = 0; } } - if (walk->nents == 0) { + WARN(!sg, "SG should not be null here\n"); + if (sg && (walk->nents == 0)) { small = min_t(unsigned int, sg_dma_len(sg) - skip_len, len); sgmin = min_t(unsigned int, small, CHCR_SRC_SG_SIZE); walk->sgl->len0 = cpu_to_be32(sgmin); -- 2.7.4