From patchwork Sun Sep 29 04:44:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yunfeng Ye X-Patchwork-Id: 11165605 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F2DD0912 for ; Sun, 29 Sep 2019 04:44:33 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 80B6021906 for ; Sun, 29 Sep 2019 04:44:33 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Hz+xSvua" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 80B6021906 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Date:Message-ID:Subject: From:To:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=rSsQDv82Kf3GFg2v5M6xar+dAzijtG8xwqe5/DsJdbk=; b=Hz+xSvuajAWANe HFwswmzOdPZgdUcL4TDRT22j7Z3EbG+zgyZZAJXSlmSadLQrvYXMDT7j8l5wMevdgtTJD7c3P2wAH qKX9YTX7kEjLz/pTYhjBw447SjYQCWFdP7FaTFXwXHTmAimYwlC+nHNRVeD5xzY3utqcnGrPdKbXM qYrYEI3qkohjgjRN84EkMl69rwGP0oL1YvuWsIGdCuOkYJINKk83xPNPx5tuMyw9JPULZjZSdVm7v n5LPsBzuyJC2qEV38S4T1T0FZ+VEGCrlfH64EiXsTrRDS3raAN6hAj3b0WVeOePJwiR9eRZA0cXLC SsOJUgMW51JDx8yWpk7A==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iER4S-0001kh-SW; Sun, 29 Sep 2019 04:44:32 +0000 Received: from szxga07-in.huawei.com ([45.249.212.35] helo=huawei.com) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1iER4O-0001gG-EE for linux-arm-kernel@lists.infradead.org; Sun, 29 Sep 2019 04:44:31 +0000 Received: from DGGEMS401-HUB.china.huawei.com (unknown [172.30.72.59]) by Forcepoint Email with ESMTP id 6EFA09C8C5F91C21757A; Sun, 29 Sep 2019 12:44:22 +0800 (CST) Received: from [127.0.0.1] (10.177.251.225) by DGGEMS401-HUB.china.huawei.com (10.3.19.201) with Microsoft SMTP Server id 14.3.439.0; Sun, 29 Sep 2019 12:44:20 +0800 To: , , , , , From: Yunfeng Ye Subject: [PATCH] arm64: armv8_deprecated: Checking return value for memory allocation Message-ID: Date: Sun, 29 Sep 2019 12:44:17 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.6.1 MIME-Version: 1.0 Content-Language: en-US X-Originating-IP: [10.177.251.225] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190928_214428_661770_83D560EB X-CRM114-Status: UNSURE ( 8.77 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [45.249.212.35 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org There are no return value checking when using kzalloc() and kcalloc() for memory allocation. so add it. Signed-off-by: Yunfeng Ye --- arch/arm64/kernel/armv8_deprecated.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/kernel/armv8_deprecated.c b/arch/arm64/kernel/armv8_deprecated.c index 2ec09de..ca158be 100644 --- a/arch/arm64/kernel/armv8_deprecated.c +++ b/arch/arm64/kernel/armv8_deprecated.c @@ -174,6 +174,9 @@ static void __init register_insn_emulation(struct insn_emulation_ops *ops) struct insn_emulation *insn; insn = kzalloc(sizeof(*insn), GFP_KERNEL); + if (!insn) + return; + insn->ops = ops; insn->min = INSN_UNDEF; @@ -233,6 +236,8 @@ static void __init register_insn_emulation_sysctl(void) insns_sysctl = kcalloc(nr_insn_emulated + 1, sizeof(*sysctl), GFP_KERNEL); + if (!insns_sysctl) + return; raw_spin_lock_irqsave(&insn_emulation_lock, flags); list_for_each_entry(insn, &insn_emulation, node) {