From nobody Sun Feb 8 02:21:24 2026 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 80CD22FE560; Wed, 22 Oct 2025 20:45:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.20 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761165932; cv=none; b=Ils28+6Qs25TGmhyAECQeIgF24gkVBbBXgufsuqgGBEC6PLkrBZo9L4kforr5Qw/+/ClnITrdAD/HSAeGSLtRAvFoq6BHaQlySQQMl+MJC8tGv84Y/y7Yzfn3gkieXomMRjjexijGykQD50poKT8DoT5yMRqZhw2k5vMv/7rbnU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761165932; c=relaxed/simple; bh=YWlHyzihnVjS1Y22x469698+jpX/0sqFDbsHjYf3Hto=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=W1SH+sUCarIPucZVeMv8xMLRioK0gTJG99sM0uG0eQcA2U4nXhPWvo3jOVMZnuH4m+qCsYYLPAsYb+GulQVubC5lqhPkLiPGEj9AGUkV0jkaTOUl6hfQVVeLqMZ8EANN4gYri14TTJPHBgaRWmDX+M28B0UQTAgEvmWE88SQc6w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=dSYHwqrA; arc=none smtp.client-ip=198.175.65.20 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="dSYHwqrA" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1761165931; x=1792701931; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=YWlHyzihnVjS1Y22x469698+jpX/0sqFDbsHjYf3Hto=; b=dSYHwqrA3f3C27SAKW+vXvlCHhec8gkdteTlDSRPG4LpAK2Tkeoo54FL M3B5Y/qRSeJK1eOAKve/Bnblshu2/DvRh0uRf5tuw+P/G4Z1RQqWF+E6I xZIvliwnCLJzWbRZyDJckqWoJ4w4f7Gl/d/aDvLkGERG+GN6BwMT7XC1l qt3/xgw2wmY2/YRPnBD8sMRPhpGFjRmyPb9tH1t4xh8T8jcqLZEUKfUH4 cv1DZYQVbDjg93mCvx5Qjqml/2Y29tsB5dOEQUwtujbqm+Z8hL4f5NC0L M5zMv9OK2oOzZ5fH9zNGp9g7tLrzs2bDgRSXapjhPwcGZiEtLYSADKpNG A==; X-CSE-ConnectionGUID: +bq3H/yzR1ynwCWSl//m8A== X-CSE-MsgGUID: vj5j7N5kTZmkv2IG+WpvhA== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="63030048" X-IronPort-AV: E=Sophos;i="6.19,247,1754982000"; d="scan'208";a="63030048" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Oct 2025 13:45:30 -0700 X-CSE-ConnectionGUID: crn79BJiR3O4ihpirT+QTQ== X-CSE-MsgGUID: DAXSrVtpSCGKonvPjrHizQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,247,1754982000"; d="scan'208";a="189096027" Received: from aschofie-mobl2.amr.corp.intel.com (HELO agluck-desk3.home.arpa) ([10.124.221.80]) by orviesa005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Oct 2025 13:45:30 -0700 From: Tony Luck To: "Rafael J. Wysocki" Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, patches@lists.linux.dev, Tony Luck Subject: [PATCH] ACPI: MRRM: Check revision of MRRM table Date: Wed, 22 Oct 2025 13:45:23 -0700 Message-ID: <20251022204523.10752-1-tony.luck@intel.com> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Before trying to parse the MRRM table, check that the table revision is the one that is expected. Signed-off-by: Tony Luck --- drivers/acpi/acpi_mrrm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/acpi/acpi_mrrm.c b/drivers/acpi/acpi_mrrm.c index 47ea3ccc2142..a6dbf623e557 100644 --- a/drivers/acpi/acpi_mrrm.c +++ b/drivers/acpi/acpi_mrrm.c @@ -63,6 +63,9 @@ static __init int acpi_parse_mrrm(struct acpi_table_heade= r *table) if (!mrrm) return -ENODEV; =20 + if (mrrm->header.revision !=3D 1) + return -EINVAL; + if (mrrm->flags & ACPI_MRRM_FLAGS_REGION_ASSIGNMENT_OS) return -EOPNOTSUPP; =20 --=20 2.51.0