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 C697DCE7A81 for ; Mon, 25 Sep 2023 11:04:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229958AbjIYLEJ (ORCPT ); Mon, 25 Sep 2023 07:04:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35826 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229632AbjIYLEE (ORCPT ); Mon, 25 Sep 2023 07:04:04 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B616AB; Mon, 25 Sep 2023 04:03:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695639838; x=1727175838; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=w8jzm9ukgkRaSpCF3iWY59UBd1VY/ShRBJdRFVOKN0U=; b=nUPOnuwIAwesCAhKDUbmf6PpjAvOkASj6KngY/wkEQNebW97J4Dc9t3w v5l8uRoqMXcyBa7Cd4bIx2vmb2yZ2583CVomUGCMXaZNF2wOK7KcnQQjl QLcnvxFUEM+ZJkbgSjkwG+mqWoMMnhoSC+ii0GSI+Dk90qAZnB4S9ViYs rLjnefSm4D/LehMrNFpoqZE/HGAu3Ho3KdSyZulmAcbWt7uZoP2Bkmkyq vBDhmRrIOrnQO1QN335xNWX3QB7sx8Osn4YWoCqFpSsKx9meCV/Ks07ah aoMICmlh+5Ew/rC52XewfzWOKG98D/BfuC9CIH/x3JeUP9/VbM+51Isxs w==; X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="412153494" X-IronPort-AV: E=Sophos;i="6.03,174,1694761200"; d="scan'208";a="412153494" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Sep 2023 04:03:57 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10843"; a="921936202" X-IronPort-AV: E=Sophos;i="6.03,174,1694761200"; d="scan'208";a="921936202" Received: from joe-255.igk.intel.com (HELO localhost) ([10.91.220.57]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Sep 2023 04:03:54 -0700 Date: Mon, 25 Sep 2023 13:03:52 +0200 From: Stanislaw Gruszka To: Kees Cook Cc: Jacek Lawrynowicz , Oded Gabbay , Nathan Chancellor , Nick Desaulniers , Tom Rix , dri-devel@lists.freedesktop.org, llvm@lists.linux.dev, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Subject: Re: [PATCH] accel/ivpu: Annotate struct ivpu_job with __counted_by Message-ID: <20230925110352.GB846747@linux.intel.com> References: <20230922175416.work.272-kees@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230922175416.work.272-kees@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 22, 2023 at 10:54:17AM -0700, Kees Cook wrote: > Prepare for the coming implementation by GCC and Clang of the __counted_by > attribute. Flexible array members annotated with __counted_by can have > their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS > (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > As found with Coccinelle[1], add __counted_by for struct ivpu_job. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: Jacek Lawrynowicz > Cc: Stanislaw Gruszka > Cc: Oded Gabbay > Cc: Nathan Chancellor > Cc: Nick Desaulniers > Cc: Tom Rix > Cc: dri-devel@lists.freedesktop.org > Cc: llvm@lists.linux.dev > Signed-off-by: Kees Cook Reviewed-by: Stanislaw Gruszka Please apply the patch via whatever tree is appropriate. Or if I have to take it via drm-misc, please let me know. Regards Stanislaw > --- > drivers/accel/ivpu/ivpu_job.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/accel/ivpu/ivpu_job.h b/drivers/accel/ivpu/ivpu_job.h > index aa1f0b9479b0..5514c2d8a609 100644 > --- a/drivers/accel/ivpu/ivpu_job.h > +++ b/drivers/accel/ivpu/ivpu_job.h > @@ -51,7 +51,7 @@ struct ivpu_job { > u32 job_id; > u32 engine_idx; > size_t bo_count; > - struct ivpu_bo *bos[]; > + struct ivpu_bo *bos[] __counted_by(bo_count); > }; > > int ivpu_submit_ioctl(struct drm_device *dev, void *data, struct drm_file *file); > -- > 2.34.1 >