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=-6.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT 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 4E4FAC4360F for ; Tue, 2 Apr 2019 17:14:03 +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 1090420449 for ; Tue, 2 Apr 2019 17:14:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="s3E/xJRG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1090420449 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.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:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=DRj77JOGhZBoePkHGkXtbipoDdCq1FBEXiln9wBvKrM=; b=s3E/xJRGK0LwVN NTWYqhCtBu5qV1iRZDcSEnAG9l4CIv1YSgvRV0KEnQ28aSCYSIPm88RWLcRc1M9B1LQyn85rApJUS ZNkwBQVKOklfVJHsKEeG2S9HkfP/5peiWB50eY9tt3Y9yZ/G0AVA5f/IzpDt4Lf3dkklkYPbbInC6 p5gpI9C8hnlViZqIiZPs59xb3AMWiwEFycvlQ4UkRUywWwzWO2+1XPtpwXFJNaTQtBmSffV2KZKv0 zqIUDe8oQHf5Wg7q28NqdNm4r65eHtgooefiaXfDHN5Z8T3Z4+7KgeFzorOSBMpiGaAsyewMAS24b l8pmwdE61U6Cqrvn5NAA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hBMz0-0003fJ-KX; Tue, 02 Apr 2019 17:13:58 +0000 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70] helo=foss.arm.com) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hBMyx-0003ez-FQ for linux-arm-kernel@lists.infradead.org; Tue, 02 Apr 2019 17:13:56 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C458980D; Tue, 2 Apr 2019 10:13:54 -0700 (PDT) Received: from mbp (usa-sjc-mx-foss1.foss.arm.com [217.140.101.70]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id DF66F3F59C; Tue, 2 Apr 2019 10:13:52 -0700 (PDT) Date: Tue, 2 Apr 2019 18:13:50 +0100 From: Catalin Marinas To: Wei Li Subject: Re: [PATCH] arm64: fix wrong check of on_sdei_stack in nmi context Message-ID: <20190402171349.mmzbp6jateh5reh6@mbp> References: <20190401035557.22191-1-liwei391@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190401035557.22191-1-liwei391@huawei.com> User-Agent: NeoMutt/20170113 (1.7.2) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190402_101355_522704_D66CD979 X-CRM114-Status: GOOD ( 10.38 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, julien.thierry@arm.com, will.deacon@arm.com, james.morse@arm.com, huawei.libin@huawei.com, guohanjun@huawei.com, labbott@redhat.com, linux-arm-kernel@lists.infradead.org, alex.popov@linux.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Apr 01, 2019 at 11:55:57AM +0800, Wei Li wrote: > When doing unwind_frame() in the context of pseudo nmi (need enable > CONFIG_ARM64_PSEUDO_NMI), reaching the botton of the stack (fp == 0, > pc != 0), function on_sdei_stack() will return true while the sdei acpi > table is not inited in fact. This will cause a "NULL pointer dereference" > oops when going on. > > Signed-off-by: Wei Li Thanks. I'll queue it for -rc4. -- Catalin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel