From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55FB0C43387 for ; Tue, 8 Jan 2019 05:41:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 26B422087F for ; Tue, 8 Jan 2019 05:41:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727785AbfAHFlJ (ORCPT ); Tue, 8 Jan 2019 00:41:09 -0500 Received: from out1.zte.com.cn ([202.103.147.172]:52132 "EHLO mxct.zte.com.cn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727625AbfAHFlI (ORCPT ); Tue, 8 Jan 2019 00:41:08 -0500 Received: from mse01.zte.com.cn (unknown [10.30.3.20]) by Forcepoint Email with ESMTPS id 93FFCABB885C946C4BF6; Tue, 8 Jan 2019 13:41:05 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse01.zte.com.cn with ESMTP id x085exjr003504; Tue, 8 Jan 2019 13:40:59 +0800 (GMT-8) (envelope-from wang.yi59@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019010813411244-21023309 ; Tue, 8 Jan 2019 13:41:12 +0800 From: Yi Wang To: mst@redhat.com Cc: jasowang@redhat.com, davem@davemloft.net, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org, xue.zhihong@zte.com.cn, wang.yi59@zte.com.cn, "huang.zijiang" Subject: [PATCH] virtio:linux:kernel:NULL check after kmalloc is needed Date: Tue, 8 Jan 2019 13:40:33 +0800 Message-Id: <1546926033-31684-1-git-send-email-wang.yi59@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-01-08 13:41:12, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-01-08 13:40:55, Serialize complete at 2019-01-08 13:40:55 X-MAIL: mse01.zte.com.cn x085exjr003504 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "huang.zijiang" NULL check is needed because kmalloc maybe return NULL. Signed-off-by: huang.zijiang --- tools/virtio/linux/kernel.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/virtio/linux/kernel.h b/tools/virtio/linux/kernel.h index 7ef45a4..2afcad8 100644 --- a/tools/virtio/linux/kernel.h +++ b/tools/virtio/linux/kernel.h @@ -65,6 +65,8 @@ static inline void *kzalloc(size_t s, gfp_t gfp) { void *p = kmalloc(s, gfp); + if (!p) + return -ENOMEM; memset(p, 0, s); return p; } -- 1.8.3.1