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=-12.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 57ECFC47083 for ; Fri, 4 Jun 2021 15:29:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3899461406 for ; Fri, 4 Jun 2021 15:29:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230289AbhFDPbH (ORCPT ); Fri, 4 Jun 2021 11:31:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:33372 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229864AbhFDPbG (ORCPT ); Fri, 4 Jun 2021 11:31:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id A398261404; Fri, 4 Jun 2021 15:29:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622820560; bh=lF4mEdpv40AVgxloddBAIZmv5h6QsjqNCuxmyL/C2ns=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aOCrj9Tan4ZVE8PMWzo2XOPSNN7dVx6/G/zS2m/oNEYrpsT9ZQXCTxG9qZJpZEHMf EsooQBTC77ZjjIUSZN+yZsEJDeD6c/Meua8qXEGk+KJKYBYerpNvu6s0XFT5PvkdL6 x53JJexHYQe9IR679Fb7KcCiiMIcDkiDCdIe67DFK2jHLnvTq8hctE49DDD/IsIlT9 pJwYpKQc4YqJRwFkV8Nazq4siorZ2oI6eWbCx8bAU/ggg9cLHIP+FbRGR8bVYLAvQh hW36ldhEb4fgv9rzqtR+vTPaWqvoV37B53vJORZTw5M+Pb9lpMSnl8Fm49m7MI0tOJ AtjXW8h3PjKuQ== Date: Fri, 4 Jun 2021 16:29:08 +0100 From: Mark Brown To: madvenka@linux.microsoft.com Cc: mark.rutland@arm.com, 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 Subject: Re: [RFC PATCH v5 0/2] arm64: Implement stack trace reliability checks Message-ID: <20210604152908.GD4045@sirena.org.uk> References: <20210526214917.20099-1-madvenka@linux.microsoft.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="hoZxPH4CaxYzWscb" Content-Disposition: inline In-Reply-To: <20210526214917.20099-1-madvenka@linux.microsoft.com> X-Cookie: There is a fly on your nose. User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --hoZxPH4CaxYzWscb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, May 26, 2021 at 04:49:15PM -0500, madvenka@linux.microsoft.com wrot= e: > From: "Madhavan T. Venkataraman" >=20 > 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 unwin= der Reviewed-by: Mark Brown --hoZxPH4CaxYzWscb Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmC6RsMACgkQJNaLcl1U h9CYNgf9Hwof1h/Xqtj4jkOFrpz2t6naEeqX3Mx6TSlmC5EyGscqgW6GBZxgFzGT trmeIBvno1J2hWcAatHYcw+zIwbsQuZCPi5489xduLPwkEzPDALElZroipJFmkCv m2KRKHr/ED6B+Ea6Kx+lgqv5xFSf3S9yPH8it2rBI+H6J2FPt42384Z72vqn4nGb DExKvoL/NxHKmyWxR2GeMJ6Lool40FOdcqpvBkIlsUa0UxUuVgTyIKbQL/F0YDnt HcyRMP745nhp0w5J85wo209LcmvHVJ+ti5d+ySCCezd9U0+RkrpgACxe6ivRNHbb w4RGHSLtZMD9H9TGmquniIkZ23fCUQ== =kfuX -----END PGP SIGNATURE----- --hoZxPH4CaxYzWscb-- 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=-10.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,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 DA0E5C07E94 for ; Fri, 4 Jun 2021 15:31:19 +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 A9BD561404 for ; Fri, 4 Jun 2021 15:31:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A9BD561404 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org 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-Type: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: In-Reply-To:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Reply-To:Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=BVafWZG5o+1TXid9uEPYqAkZUHtS7RtWp7jdARpWNhU=; b=NsFtJkoqotJ0pHKOLrRUSwsfVl e7GSmbRT7hGaP2B63obO3jvxDUo5dFbVjC4QDACqBUClNxcthYTEqrKBm3nPOTnXSRmq3bf182OXg lVxs6FqBJZF3n3ureUcAlVmvPJ7skSHoCQnnLVC5Li9VB76zgMmZh/dLIS1ZQ7Xr4ntF6jIoZ18Na eqeryLaPy5Bcf+akEuiklREpuCR0/vvGA26vLCs5r/gTGhtog665sOZYZbZTVrRtms695p2L8RAmR hZEQrBM9lCEQd/sryY8IduFHxj+sqHTTkhVSooHe2mvfL4c8CNVAgUXfg4tHf8w4eKqily5pqK0P3 GRLNhD4w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lpBlJ-00EAOB-Qq; Fri, 04 Jun 2021 15:29:30 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lpBlA-00EAMl-Mm for linux-arm-kernel@lists.infradead.org; Fri, 04 Jun 2021 15:29:21 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id A398261404; Fri, 4 Jun 2021 15:29:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622820560; bh=lF4mEdpv40AVgxloddBAIZmv5h6QsjqNCuxmyL/C2ns=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aOCrj9Tan4ZVE8PMWzo2XOPSNN7dVx6/G/zS2m/oNEYrpsT9ZQXCTxG9qZJpZEHMf EsooQBTC77ZjjIUSZN+yZsEJDeD6c/Meua8qXEGk+KJKYBYerpNvu6s0XFT5PvkdL6 x53JJexHYQe9IR679Fb7KcCiiMIcDkiDCdIe67DFK2jHLnvTq8hctE49DDD/IsIlT9 pJwYpKQc4YqJRwFkV8Nazq4siorZ2oI6eWbCx8bAU/ggg9cLHIP+FbRGR8bVYLAvQh hW36ldhEb4fgv9rzqtR+vTPaWqvoV37B53vJORZTw5M+Pb9lpMSnl8Fm49m7MI0tOJ AtjXW8h3PjKuQ== Date: Fri, 4 Jun 2021 16:29:08 +0100 From: Mark Brown To: madvenka@linux.microsoft.com Cc: mark.rutland@arm.com, 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 Subject: Re: [RFC PATCH v5 0/2] arm64: Implement stack trace reliability checks Message-ID: <20210604152908.GD4045@sirena.org.uk> References: <20210526214917.20099-1-madvenka@linux.microsoft.com> MIME-Version: 1.0 In-Reply-To: <20210526214917.20099-1-madvenka@linux.microsoft.com> X-Cookie: There is a fly on your nose. User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210604_082920_800224_680FD0AA X-CRM114-Status: GOOD ( 10.48 ) 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: multipart/mixed; boundary="===============5808736991593488998==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============5808736991593488998== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="hoZxPH4CaxYzWscb" Content-Disposition: inline --hoZxPH4CaxYzWscb Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, May 26, 2021 at 04:49:15PM -0500, madvenka@linux.microsoft.com wrot= e: > From: "Madhavan T. Venkataraman" >=20 > 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 unwin= der Reviewed-by: Mark Brown --hoZxPH4CaxYzWscb Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmC6RsMACgkQJNaLcl1U h9CYNgf9Hwof1h/Xqtj4jkOFrpz2t6naEeqX3Mx6TSlmC5EyGscqgW6GBZxgFzGT trmeIBvno1J2hWcAatHYcw+zIwbsQuZCPi5489xduLPwkEzPDALElZroipJFmkCv m2KRKHr/ED6B+Ea6Kx+lgqv5xFSf3S9yPH8it2rBI+H6J2FPt42384Z72vqn4nGb DExKvoL/NxHKmyWxR2GeMJ6Lool40FOdcqpvBkIlsUa0UxUuVgTyIKbQL/F0YDnt HcyRMP745nhp0w5J85wo209LcmvHVJ+ti5d+ySCCezd9U0+RkrpgACxe6ivRNHbb w4RGHSLtZMD9H9TGmquniIkZ23fCUQ== =kfuX -----END PGP SIGNATURE----- --hoZxPH4CaxYzWscb-- --===============5808736991593488998== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============5808736991593488998==--