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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id DB452C433EF for ; Mon, 11 Apr 2022 01:15:07 +0000 (UTC) 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:References: Message-ID:Subject:Cc: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=ZHqR6UzsdPSbVeOCDmPlJRy6lOi1Km74itl8oNQNa6U=; b=4BS0dGwSMuOd4K e8khBhN8hc4EyCYtn3fiDh05L9kgcieVP2cIp778+/iQHsrY+edsKOSUmLq+XkCxS1aHFVNUgebE2 dZVt/huLBAUYPKttu8izl2P1Y4Odh3exzQKaJIBGyYim/NAmGh+A2jANuV48OIwATRBhYqfChvgS2 oyiYYAlFI9YGiDA58rV5rR9PFWr/AdR7XMCd1eB19fiYR2H7ts0Kc8wjYqYDWUIxMlufcQJFKuk7P 1ODasz2fgngRjl31HvwPQvp/13ujPyKzAHcKfDTjY2VZNybx+pn+h800M/SjJHIrqFdIfpbAQ2Czh n20+/mrC4OZ/8or/DQeg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ndick-0063Zc-Rh; Mon, 11 Apr 2022 01:13:46 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ndici-0063YP-3f for linux-arm-kernel@lists.infradead.org; Mon, 11 Apr 2022 01:13:45 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1649639622; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=bzb26m11svbhakJjeqql27MLX/tQHpqAdXMJP0Zh5QY=; b=Fnj/uAa7+uZKSU15GEoz1UVClENwXZD6pXHxhXWGhMnBsYPZlgl5dE4LRAEvF8EtaQHHlH /+hC2mtXWw3bUbikEE0WxOtm+PoKgaoGte4W1wfJ5cmEHJJlnRBf08DatKhcx1qjz4xr+7 fj5zDbZ+W/5K0H/s+H3C06RLvPWNYG4= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-302-e3w2AA-pP1WQ07GqITXsVQ-1; Sun, 10 Apr 2022 21:13:39 -0400 X-MC-Unique: e3w2AA-pP1WQ07GqITXsVQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 2253B185A79C; Mon, 11 Apr 2022 01:13:39 +0000 (UTC) Received: from localhost (ovpn-12-19.pek2.redhat.com [10.72.12.19]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 1D41820296A7; Mon, 11 Apr 2022 01:13:34 +0000 (UTC) Date: Mon, 11 Apr 2022 09:13:32 +0800 From: Baoquan He To: Michal =?iso-8859-1?Q?Such=E1nek?= Cc: Coiby Xu , kexec@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Dave Young , Will Deacon , "Eric W . Biederman" , akpm@linux-foundation.org Subject: Re: [PATCH v5 0/3] use more system keyrings to verify arm64 kdump kernel image signature Message-ID: References: <20220401013118.348084-1-coxu@redhat.com> <20220408085931.GW163591@kunlun.suse.cz> MIME-Version: 1.0 In-Reply-To: <20220408085931.GW163591@kunlun.suse.cz> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=bhe@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220410_181344_264348_693C7C9C X-CRM114-Status: GOOD ( 19.59 ) 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="iso-8859-1" Content-Transfer-Encoding: quoted-printable Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 04/08/22 at 10:59am, Michal Such=E1nek wrote: > On Fri, Apr 08, 2022 at 03:17:19PM +0800, Baoquan He wrote: > > Hi Coiby, > > = > > On 04/01/22 at 09:31am, Coiby Xu wrote: > > > Currently, a problem faced by arm64 is if a kernel image is signed by= a > > > MOK key, loading it via the kexec_file_load() system call would be > > > rejected with the error "Lockdown: kexec: kexec of unsigned images is > > > restricted; see man kernel_lockdown.7". > > > = > > > This patch set allows arm64 to use more system keyrings to verify kdu= mp = > > > kernel image signature by making the existing code in x64 public. > > = > > Thanks for updating. It would be great to tell why the problem is > > met, then allow arm64 to use more system keyrings can solve it. > = > The reason is that MOK keys are (if anywhere) linked to the secondary > keyring, and only primary keyring is used on arm64. Thanks for explaining. This is valuable information and should be put into log for better understanding when reviewing or reading code later. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel