From patchwork Wed Jan 17 09:17:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kunwu Chan X-Patchwork-Id: 1887314 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org (client-ip=112.213.38.117; helo=lists.ozlabs.org; envelope-from=linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org; receiver=patchwork.ozlabs.org) Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TFL0L1XbZz1yPJ for ; Wed, 17 Jan 2024 20:18:41 +1100 (AEDT) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4TFL0J0sNVz3bqD for ; Wed, 17 Jan 2024 20:18:40 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kylinos.cn (client-ip=124.126.103.232; helo=mailgw.kylinos.cn; envelope-from=chentao@kylinos.cn; receiver=lists.ozlabs.org) Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4TFL033Nz8z300v for ; Wed, 17 Jan 2024 20:18:26 +1100 (AEDT) X-UUID: 092a25c25f774595a76680933ec4c3ab-20240117 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.35,REQID:e62c8672-fef4-4b33-9946-b3a1b05d1d21,IP:10, URL:0,TC:0,Content:0,EDM:25,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACT ION:release,TS:20 X-CID-INFO: VERSION:1.1.35,REQID:e62c8672-fef4-4b33-9946-b3a1b05d1d21,IP:10,UR L:0,TC:0,Content:0,EDM:25,RT:0,SF:-15,FILE:0,BULK:0,RULE:Release_Ham,ACTIO N:release,TS:20 X-CID-META: VersionHash:5d391d7,CLOUDID:035e432f-1ab8-4133-9780-81938111c800,B ulkID:24011717171241K6UZ5Z,BulkQuantity:0,Recheck:0,SF:66|38|24|17|19|44|1 02,TC:nil,Content:0,EDM:5,IP:-2,URL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL :0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD,TF_CID_SPAM_FSI X-UUID: 092a25c25f774595a76680933ec4c3ab-20240117 Received: from mail.kylinos.cn [(39.156.73.10)] by mailgw (envelope-from ) (Generic MTA) with ESMTP id 55816797; Wed, 17 Jan 2024 17:17:10 +0800 Received: from mail.kylinos.cn (localhost [127.0.0.1]) by mail.kylinos.cn (NSMail) with SMTP id AF339E000EB9; Wed, 17 Jan 2024 17:17:10 +0800 (CST) X-ns-mid: postfix-65A79B16-504608615 Received: from kernel.. (unknown [172.20.15.234]) by mail.kylinos.cn (NSMail) with ESMTPA id DF716E000EB9; Wed, 17 Jan 2024 17:17:07 +0800 (CST) From: Kunwu Chan To: mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, aneesh.kumar@kernel.org, naveen.n.rao@linux.ibm.com Subject: [PATCH] powerpc/pasemi: Add a null pointer check to the pas_setup_mce_regs Date: Wed, 17 Jan 2024 17:17:06 +0800 Message-Id: <20240117091706.153431-1-chentao@kylinos.cn> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Kunwu Chan Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" kasprintf() returns a pointer to dynamically allocated memory which can be NULL upon failure. Ensure the allocation was successful by checking the pointer validity. Signed-off-by: Kunwu Chan --- arch/powerpc/platforms/pasemi/setup.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/powerpc/platforms/pasemi/setup.c b/arch/powerpc/platforms/pasemi/setup.c index 0761d98e5be3..8f98f3b58888 100644 --- a/arch/powerpc/platforms/pasemi/setup.c +++ b/arch/powerpc/platforms/pasemi/setup.c @@ -165,6 +165,8 @@ static int __init pas_setup_mce_regs(void) while (dev && reg < MAX_MCE_REGS) { mce_regs[reg].name = kasprintf(GFP_KERNEL, "mc%d_mcdebug_errsta", reg); + if (!mce_regs[reg].name) + return -ENOMEM; mce_regs[reg].addr = pasemi_pci_getcfgaddr(dev, 0x730); dev = pci_get_device(PCI_VENDOR_ID_PASEMI, 0xa00a, dev); reg++;