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=-11.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 B089DC4743C for ; Fri, 4 Jun 2021 20:46:22 +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 6F24861287 for ; Fri, 4 Jun 2021 20:46:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6F24861287 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+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.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date: Message-ID:From:References:Cc:To:Subject:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=iEPDljL1bEouuvO9ODZPWzP9SsZIL0Xcv67nFe9Rsig=; b=4/P7ZiVoR+kvB/U2xiAESuzyCX wfUk3ijCbs4IWV8iDasj7VxXdDxviIL3QLQTml1LdigOeSe5d6rm09A+zoF+vY5RY2gWa5CTsgTGj 7XuNjow5vI7RiV9qENeKgA+G2uyvmvYVLmg4i+o7eXPY8P+osUu7TupvPyrshyzhX10obQRH28XY8 tqevbZrTZTPjekHROlP5sB+yEGsqTuvuNJfR7JIXH+gOipNDobWguW1HImYXJVvcGhbpq/QwrfjYu u67cEB4fpKHnMaqbyEB0WQDGeRxktbjTKBxoU4qVBdQ0Lm9dvrjG6R+Kimo0ZbrLQzq9deOxY05dM ke2WKgIQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lpGgP-00F9NB-8J; Fri, 04 Jun 2021 20:44:45 +0000 Received: from linux.microsoft.com ([13.77.154.182]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lpGgM-00F9ME-9S for linux-arm-kernel@lists.infradead.org; Fri, 04 Jun 2021 20:44:43 +0000 Received: from [192.168.254.32] (unknown [47.187.214.213]) by linux.microsoft.com (Postfix) with ESMTPSA id B81E420B7178; Fri, 4 Jun 2021 13:44:40 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com B81E420B7178 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1622839481; bh=TEj7EM3o5+98uJz07bRAjergvchDlGPCV6FJpuSvx4o=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=HouYNKoOc/HyfaQL1LCJbvsjnCx3jzuuAqk6uTacGwD253S95a3gu4rFYA4RAurVy 7ZicmjTFGm48ks6edRn8/E2mK4FrqUfA2BmC8/oGFKkyk+8VZ6M3alaa9PvjEQcxyg vqo9nXtlvpetxo72bR+nFtDAIA1Xgm5aYcKeBA4c= Subject: Re: [RFC PATCH v5 0/2] arm64: Implement stack trace reliability checks To: Mark Brown , Mark Rutland Cc: jpoimboe@redhat.com, ardb@kernel.org, nobuta.keiya@fujitsu.com, catalin.marinas@arm.com, will@kernel.org, jmorris@namei.org, pasha.tatashin@soleen.com, jthierry@redhat.com, linux-arm-kernel@lists.infradead.org, live-patching@vger.kernel.org, linux-kernel@vger.kernel.org References: <20210526214917.20099-1-madvenka@linux.microsoft.com> <20210604152908.GD4045@sirena.org.uk> From: "Madhavan T. Venkataraman" Message-ID: <3e3fdff0-26ed-e786-e570-3f569bda1609@linux.microsoft.com> Date: Fri, 4 Jun 2021 15:44:39 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <20210604152908.GD4045@sirena.org.uk> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210604_134442_390053_2E0487A8 X-CRM114-Status: GOOD ( 12.25 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Mark Rutland, Could you please review this patch series when you get a chance? I would really like to get a confirmation from you that there are no gaps in this. Thanks in advance! Madhavan On 6/4/21 10:29 AM, Mark Brown wrote: > On Wed, May 26, 2021 at 04:49:15PM -0500, madvenka@linux.microsoft.com wrote: >> From: "Madhavan T. Venkataraman" >> >> There are a number of places in kernel code where the stack trace is not >> reliable. Enhance the unwinder to check for those cases and mark the >> stack trace as unreliable. Once all of the checks are in place, the unwinder > > Reviewed-by: Mark Brown > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel