From nobody Thu Apr 25 01:39:11 2024 Delivered-To: importer@patchew.org Received-SPF: none (zoho.com: 78.46.105.101 is neither permitted nor denied by domain of seabios.org) client-ip=78.46.105.101; envelope-from=seabios-bounces@seabios.org; helo=coreboot.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=none (zoho.com: 78.46.105.101 is neither permitted nor denied by domain of seabios.org) smtp.mailfrom=seabios-bounces@seabios.org ARC-Seal: i=1; a=rsa-sha256; t=1560359914; cv=none; d=zoho.com; s=zohoarc; b=T6lxMmRqddwNMVVehgf9req2zcaB76TIZwz812WnmZLOMRqzkmu6EqSHmqi6AE/4llKemAMB7C4nL/SJNZbUq7jltb5brEE51Se8ykUute5AduMaJ0BB5CkbT24bT4Mt8Ul9XIEpz9WG7EV1NQi7qhosqnoVXnrXOLZV4dbdoI4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1560359914; h=Content-Type:Date:From:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Subject:To:ARC-Authentication-Results; bh=sfomVndLlAACPfClxWxatfcP64RE9WpnnsrPB5Re4PA=; b=WAf9mxrfnT/dbz9S7uLvRe6w+1KGNTm0+wVSbyBMGFu72E88oPsIk8O/WRKZ6Yd+ryYR0UMVA9sCc84UcsNN8FDkZ1AdEwqTbonMIM8eT1HoVZHf/m10Y4IfLywIWGlLVpDOocoB/QrLQIyJCLkl9o+yAWTMDtgklH6G9Q+xUK8= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=fail; spf=none (zoho.com: 78.46.105.101 is neither permitted nor denied by domain of seabios.org) smtp.mailfrom=seabios-bounces@seabios.org Return-Path: Received: from coreboot.org (coreboot.org [78.46.105.101]) by mx.zohomail.com with SMTPS id 156035991403124.85148984785451; Wed, 12 Jun 2019 10:18:34 -0700 (PDT) Received: from [192.168.203.99] (mailu_mailman-core_1.mailu_default [192.168.203.99]) by coreboot.org (Postfix) with ESMTP id C617312E2EB1; Wed, 12 Jun 2019 17:18:28 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by coreboot.org (Postfix) with ESMTP id 3F7ED12E2EAA for ; Wed, 12 Jun 2019 17:18:21 +0000 (UTC) Received: from [54.239.6.185] (helo=u3832b3a9db3152.ant.amazon.com) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hb6Xx-0000tX-61 for seabios@seabios.org; Wed, 12 Jun 2019 16:56:25 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Mime-Version:Content-Type:Date:To: From:Subject:Message-ID:Sender:Reply-To:Cc:Content-Transfer-Encoding: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=e5AEeLR+IicwBLP/Dl98btrWhmXwkoTCrsggYBzc4tk=; b=hrtoReMmRw4hebIMOqjYWs5FM sggZIm11lYc8vD+StR3nOie28RK3iJufYhZRb80UzgzBrjcDSS+AOQeO2fI3DqbGRmktnSki23GeZ 4iuPuYO5G0C7mnD9ObRes/7i4zIiidD5QPFzeVOI+2HNfdrokmCnzSDlgr+771HIs148I27KRtTtU 9YoZGZCq169YtUbwXzXFEEttEZZ0ogKdufUlop6iNdOBZNVIpbTHo70fe1dGKsm3gFOozp9LXHnjB NVD8uLDszcSpJAs1EMNJUntJ1SRJ6HUZnmDmywadQHF4DpRsWjp7LY/rQUQkjHV8NJQEHSfXwkDUp SfaZJkBBQ==; Message-ID: <444b4d325274e0197ac3dca2072cedda3011c440.camel@infradead.org> From: David Woodhouse To: seabios Date: Wed, 12 Jun 2019 17:56:23 +0100 X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.1 Mime-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Message-ID-Hash: 4PHW3O3Y3HJFENODFV5INBGDLZMXA5KE X-Message-ID-Hash: 4PHW3O3Y3HJFENODFV5INBGDLZMXA5KE X-MailFrom: BATV+fb89f1f5051329a57f31+5771+infradead.org+dwmw2@bombadil.srs.infradead.org X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; suspicious-header X-Mailman-Version: 3.2.2 Precedence: list Subject: [SeaBIOS] [PATCH] csm: Sanitise alignment constraint in Legacy16GetTableAddress List-Id: SeaBIOS mailing list Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: Content-Type: multipart/mixed; boundary="===============7322062877609285297==" X-Spamd-Bar: +++ X-Spam-Level: *** Authentication-Results: coreboot.org X-Zoho-Virus-Status: 1 X-ZohoMail-DKIM: fail (Header signature does not verify) --===============7322062877609285297== Content-Type: multipart/signed; micalg="sha-256"; protocol="application/x-pkcs7-signature"; boundary="=-2JkpPi5tbXr4cGmCcD+q" --=-2JkpPi5tbXr4cGmCcD+q Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable The alignment constraint is defined in the CSM specifications as "Bit mapped. First non-zero bit from the right is the alignment." Use __fls() to sanitise the alignment given that definition, since passing a non-power-of-two alignment to _malloc() isn't going to work well. And cope with being passed zero, which was happening for the E820 table allocation from EDK2. Signed-off-by: David Woodhouse --- src/fw/csm.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/fw/csm.c b/src/fw/csm.c index 03b4bb8..bf7b8f5 100644 --- a/src/fw/csm.c +++ b/src/fw/csm.c @@ -264,6 +264,13 @@ handle_csm_0006(struct bregs *regs) dprintf(3, "Legacy16GetTableAddress size %x align %x region %d\n", size, align, region); =20 + // DX =3D Required address alignment. 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