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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D28BFCA0EEB for ; Tue, 12 Sep 2023 15:08:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236304AbjILPIE (ORCPT ); Tue, 12 Sep 2023 11:08:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41098 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236236AbjILPHt (ORCPT ); Tue, 12 Sep 2023 11:07:49 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 80419CEB for ; Tue, 12 Sep 2023 08:07:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1694531265; x=1726067265; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=IZARSdoFCqlQ8R698PWQsBWxz7kOn+9GL/Gy+QZMtVQ=; b=QTUysuG4oGVdHe7Sxr2STVwLOAenqsdONirLY/pR793dMV3OJlfWAbou p9/63hxXp2vsERnpVb6KvyG780FIVuVqTnbsSp/N130hHaeVjY2Yc8zS4 tLI8ULo8jlWYFTQSYot4fUuNbNYHInlRt5P1/NAP+8uQe/lpCo+aJTf0I Vd8NRJ/KUdD7HOHp+HTLmZbKUgOA/VIHWApuBZvb0WDs7kt8q7qCNV98f YBfphW91H1jUuf1/H4i4Ze/KeSBO9ZNlrJWN54udfQqV4WiyvOf4H19oS xxyfFuOWSEU5egt1gXzvGj69chyGJGBFPy7l/uYbHTJOl9rYyKbmerlct Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10831"; a="368662560" X-IronPort-AV: E=Sophos;i="6.02,139,1688454000"; d="scan'208";a="368662560" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Sep 2023 08:05:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10831"; a="773065029" X-IronPort-AV: E=Sophos;i="6.02,139,1688454000"; d="scan'208";a="773065029" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga008.jf.intel.com with ESMTP; 12 Sep 2023 08:05:55 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 8E53FBC2; Tue, 12 Sep 2023 18:05:54 +0300 (EEST) From: Andy Shevchenko To: Andy Shevchenko , linux-kernel@vger.kernel.org Cc: Luis Chamberlain Subject: [PATCH v1 4/6] params: Use size_add() for kmalloc() Date: Tue, 12 Sep 2023 18:05:49 +0300 Message-Id: <20230912150551.401537-4-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.40.0.1.gaa8946217a0b In-Reply-To: <20230912150551.401537-1-andriy.shevchenko@linux.intel.com> References: <20230912150551.401537-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Prevent allocations from integer overflow by using size_add(). Signed-off-by: Andy Shevchenko --- kernel/params.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/params.c b/kernel/params.c index 930a5dc2f004..fd11c731475f 100644 --- a/kernel/params.c +++ b/kernel/params.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -48,7 +49,7 @@ static void *kmalloc_parameter(unsigned int size) { struct kmalloced_param *p; - p = kmalloc(sizeof(*p) + size, GFP_KERNEL); + p = kmalloc(size_add(sizeof(*p), size), GFP_KERNEL); if (!p) return NULL; -- 2.40.0.1.gaa8946217a0b