From patchwork Sun Jul 12 20:47:44 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julia Lawall X-Patchwork-Id: 1314 Return-path: Envelope-to: mchehab@infradead.org Delivery-date: Sun, 12 Jul 2009 20:54:41 +0000 Received: from bombadil.infradead.org [18.85.46.34] by pedra.chehab.org with IMAP (fetchmail-6.3.6) for (single-drop); Sun, 12 Jul 2009 17:57:25 -0300 (BRT) Received: from vger.kernel.org ([209.132.176.167]) by bombadil.infradead.org with esmtp (Exim 4.69 #1 (Red Hat Linux)) id 1MQ64H-0002zd-2k; Sun, 12 Jul 2009 20:54:41 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751776AbZGLUyf (ORCPT + 1 other); Sun, 12 Jul 2009 16:54:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751473AbZGLUyf (ORCPT ); Sun, 12 Jul 2009 16:54:35 -0400 Received: from mgw1.diku.dk ([130.225.96.91]:32853 "EHLO mgw1.diku.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751297AbZGLUyd (ORCPT ); Sun, 12 Jul 2009 16:54:33 -0400 Received: from localhost (localhost [127.0.0.1]) by mgw1.diku.dk (Postfix) with ESMTP id 4868C52C3D8; Sun, 12 Jul 2009 22:54:32 +0200 (CEST) X-Virus-Scanned: amavisd-new at diku.dk Received: from mgw1.diku.dk ([127.0.0.1]) by localhost (mgw1.diku.dk [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id LlBSjmRqsQtH; Sun, 12 Jul 2009 22:54:30 +0200 (CEST) Received: from nhugin.diku.dk (nhugin.diku.dk [130.225.96.140]) by mgw1.diku.dk (Postfix) with ESMTP id CBEE752C491; Sun, 12 Jul 2009 22:47:44 +0200 (CEST) Received: from ask.diku.dk (ask.diku.dk [130.225.96.225]) by nhugin.diku.dk (Postfix) with ESMTP id AD3036DFD05; Sun, 12 Jul 2009 22:47:21 +0200 (CEST) Received: by ask.diku.dk (Postfix, from userid 3767) id 9D2BA154A39; Sun, 12 Jul 2009 22:47:44 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by ask.diku.dk (Postfix) with ESMTP id 9A3B51549A9; Sun, 12 Jul 2009 22:47:44 +0200 (CEST) Date: Sun, 12 Jul 2009 22:47:44 +0200 (CEST) From: Julia Lawall To: moinejf@free.fr, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH] drivers/media/video/gspca: Add kmalloc NULL tests Message-ID: MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Julia Lawall Check that the result of kmalloc is not NULL before passing it to other functions. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // @@ expression *x; identifier f; constant char *C; @@ x = \(kmalloc\|kcalloc\|kzalloc\)(...); ... when != x == NULL when != x != NULL when != (x || ...) ( kfree(x) | f(...,C,...,x,...) | *f(...,x,...) | *x->f ) // Signed-off-by: Julia Lawall --- drivers/media/video/gspca/conex.c | 2 ++ drivers/media/video/gspca/mars.c | 2 ++ drivers/media/video/gspca/sonixj.c | 2 ++ drivers/media/video/gspca/spca500.c | 2 ++ drivers/media/video/gspca/stk014.c | 2 ++ drivers/media/video/gspca/sunplus.c | 2 ++ drivers/media/video/gspca/zc3xx.c | 2 ++ 7 files changed, 14 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/media/video/gspca/conex.c b/drivers/media/video/gspca/conex.c index 219cfa6..8d48ea1 100644 --- a/drivers/media/video/gspca/conex.c +++ b/drivers/media/video/gspca/conex.c @@ -846,6 +846,8 @@ static int sd_start(struct gspca_dev *gspca_dev) /* create the JPEG header */ sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL); + if (!sd->jpeg_hdr) + return -ENOMEM; jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width, 0x22); /* JPEG 411 */ jpeg_set_qual(sd->jpeg_hdr, sd->quality); diff --git a/drivers/media/video/gspca/mars.c b/drivers/media/video/gspca/mars.c index 75e8d14..de769ca 100644 --- a/drivers/media/video/gspca/mars.c +++ b/drivers/media/video/gspca/mars.c @@ -201,6 +201,8 @@ static int sd_start(struct gspca_dev *gspca_dev) /* create the JPEG header */ sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL); + if (!sd->jpeg_hdr) + return -ENOMEM; jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width, 0x21); /* JPEG 422 */ jpeg_set_qual(sd->jpeg_hdr, sd->quality); diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c index 0d02f41..db425cc 100644 --- a/drivers/media/video/gspca/sonixj.c +++ b/drivers/media/video/gspca/sonixj.c @@ -1735,6 +1735,8 @@ static int sd_start(struct gspca_dev *gspca_dev) /* create the JPEG header */ sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL); + if (!sd->jpeg_hdr) + return -ENOMEM; jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width, 0x21); /* JPEG 422 */ jpeg_set_qual(sd->jpeg_hdr, sd->quality); diff --git a/drivers/media/video/gspca/spca500.c b/drivers/media/video/gspca/spca500.c index 8806b2f..fab7ef8 100644 --- a/drivers/media/video/gspca/spca500.c +++ b/drivers/media/video/gspca/spca500.c @@ -670,6 +670,8 @@ static int sd_start(struct gspca_dev *gspca_dev) /* create the JPEG header */ sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL); + if (!sd->jpeg_hdr) + return -ENOMEM; jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width, 0x22); /* JPEG 411 */ jpeg_set_qual(sd->jpeg_hdr, sd->quality); diff --git a/drivers/media/video/gspca/stk014.c b/drivers/media/video/gspca/stk014.c index f25be20..4762896 100644 --- a/drivers/media/video/gspca/stk014.c +++ b/drivers/media/video/gspca/stk014.c @@ -333,6 +333,8 @@ static int sd_start(struct gspca_dev *gspca_dev) /* create the JPEG header */ sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL); + if (!sd->jpeg_hdr) + return -ENOMEM; jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width, 0x22); /* JPEG 411 */ jpeg_set_qual(sd->jpeg_hdr, sd->quality); diff --git a/drivers/media/video/gspca/sunplus.c b/drivers/media/video/gspca/sunplus.c index 9623f29..5127bbf 100644 --- a/drivers/media/video/gspca/sunplus.c +++ b/drivers/media/video/gspca/sunplus.c @@ -973,6 +973,8 @@ static int sd_start(struct gspca_dev *gspca_dev) /* create the JPEG header */ sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL); + if (!sd->jpeg_hdr) + return -ENOMEM; jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width, 0x22); /* JPEG 411 */ jpeg_set_qual(sd->jpeg_hdr, sd->quality); diff --git a/drivers/media/video/gspca/zc3xx.c b/drivers/media/video/gspca/zc3xx.c index 08422d3..3d2756f 100644 --- a/drivers/media/video/gspca/zc3xx.c +++ b/drivers/media/video/gspca/zc3xx.c @@ -7243,6 +7243,8 @@ static int sd_start(struct gspca_dev *gspca_dev) /* create the JPEG header */ sd->jpeg_hdr = kmalloc(JPEG_HDR_SZ, GFP_KERNEL); + if (!sd->jpeg_hdr) + return -ENOMEM; jpeg_define(sd->jpeg_hdr, gspca_dev->height, gspca_dev->width, 0x21); /* JPEG 422 */ jpeg_set_qual(sd->jpeg_hdr, sd->quality);