From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1176029AbdDYHjH (ORCPT ); Tue, 25 Apr 2017 03:39:07 -0400 Received: from mail-pf0-f195.google.com ([209.85.192.195]:35220 "EHLO mail-pf0-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S943081AbdDYHi5 (ORCPT ); Tue, 25 Apr 2017 03:38:57 -0400 From: Rajnikant Bhojani To: linux-kernel@vger.kernel.org Subject: [PATCH] check for null while iterating over a scatterlist table Date: Tue, 25 Apr 2017 13:08:49 +0530 Message-Id: <1493105929-23353-1-git-send-email-rajnikant.bhojani@sibridgetech.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org during iterating over a scatterlist table also need to check for NULL along with number of scatterlist Signed-off-by: Rajnikant Bhojani --- include/linux/scatterlist.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index cb3c8fe..f8dce12 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -146,7 +146,7 @@ static inline void sg_set_buf(struct scatterlist *sg, const void *buf, * Loop over each sg element, following the pointer to a new list if necessary */ #define for_each_sg(sglist, sg, nr, __i) \ - for (__i = 0, sg = (sglist); __i < (nr); __i++, sg = sg_next(sg)) + for (__i = 0, sg = (sglist); __i < (nr) && sg; __i++, sg = sg_next(sg)) /** * sg_chain - Chain two sglists together -- 2.7.4