Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933376AbbLTL2f (ORCPT ); Sun, 20 Dec 2015 06:28:35 -0500 Received: from mail2-relais-roc.national.inria.fr ([192.134.164.83]:41224 "EHLO mail2-relais-roc.national.inria.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932784AbbLTL2d (ORCPT ); Sun, 20 Dec 2015 06:28:33 -0500 X-IronPort-AV: E=Sophos;i="5.20,454,1444687200"; d="scan'208";a="193180806" From: Julia Lawall To: linux-s390@vger.kernel.org Cc: kernel-janitors@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org Subject: [PATCH 0/4] add NULL test Date: Sun, 20 Dec 2015 12:15:49 +0100 Message-Id: <1450610153-7746-1-git-send-email-Julia.Lawall@lip6.fr> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1321 Lines: 49 Add NULL tests on various calls to kzalloc and devm_kzalloc. The semantic match that finds these problems is as follows: (http://coccinelle.lip6.fr/) // @@ expression x,y; identifier fld; @@ ( x = \(vmalloc\|kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|krealloc\| kmemdup\|kstrdup\| devm_kzalloc\|devm_kmalloc\|devm_kcalloc\|devm_kasprintf\| kmalloc_array\)(...,<+... __GFP_NOFAIL ...+>,...); | * x = \(vmalloc\|kmalloc\|kzalloc\|kcalloc\|kmem_cache_alloc\|krealloc\| kmemdup\|kstrdup\| devm_kzalloc\|devm_kmalloc\|devm_kcalloc\|devm_kasprintf\| kmalloc_array\)(...); ) ... when != (x) == NULL when != (x) != NULL when != (x) == 0 when != (x) != 0 when != x = y ( x->fld | *x | x[...] ) // --- drivers/s390/char/con3215.c | 2 ++ drivers/s390/char/raw3270.c | 2 ++ sound/soc/fsl/imx-pcm-dma.c | 2 ++ sound/soc/intel/baytrail/sst-baytrail-pcm.c | 2 ++ sound/soc/omap/omap-hdmi-audio.c | 2 ++ 5 files changed, 10 insertions(+) -- 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/