Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030871AbbKDUO5 (ORCPT ); Wed, 4 Nov 2015 15:14:57 -0500 Received: from mail-wi0-f175.google.com ([209.85.212.175]:33830 "EHLO mail-wi0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1030775AbbKDUOy (ORCPT ); Wed, 4 Nov 2015 15:14:54 -0500 From: LABBE Corentin To: clabbe.montjoie@gmail.com, davem@davemloft.net, dmitry.torokhov@gmail.com, fabio.estevam@freescale.com, herbert@gondor.apana.org.au Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 7/7] crypto: amcc: check return value of sg_nents_for_len Date: Wed, 4 Nov 2015 21:13:39 +0100 Message-Id: <1446668045-8620-7-git-send-email-clabbe.montjoie@gmail.com> X-Mailer: git-send-email 2.4.10 In-Reply-To: <1446668045-8620-1-git-send-email-clabbe.montjoie@gmail.com> References: <1446668045-8620-1-git-send-email-clabbe.montjoie@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1005 Lines: 31 The sg_nents_for_len() function could fail, this patch add a check for its return value. Signed-off-by: LABBE Corentin --- drivers/crypto/amcc/crypto4xx_core.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c index 27288fc..e6f7757 100644 --- a/drivers/crypto/amcc/crypto4xx_core.c +++ b/drivers/crypto/amcc/crypto4xx_core.c @@ -781,6 +781,10 @@ u32 crypto4xx_build_pd(struct crypto_async_request *req, /* figure how many gd is needed */ num_gd = sg_nents_for_len(src, datalen); + if ((int)num_gd < 0) { + dev_err(dev->core_dev->device, "Invalid number of src SG.\n"); + return -EINVAL; + } if (num_gd == 1) num_gd = 0; -- 2.4.10 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/