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 4AE02C4167B for ; Tue, 5 Dec 2023 20:19:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346126AbjLEUTs (ORCPT ); Tue, 5 Dec 2023 15:19:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42786 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230106AbjLEUTn (ORCPT ); Tue, 5 Dec 2023 15:19:43 -0500 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D9D6E109 for ; Tue, 5 Dec 2023 12:19:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1701807590; x=1733343590; h=date:from:to:cc:subject:message-id:mime-version; bh=dPPgZsNpLpA6b2M1pUW5vh72SRqIE7D958y8BRotBPU=; b=OMGCYLEB4XRTiAjF4sov6pJ1DDy2QFTeR59xcz9x8en/G/HH68d9WyW4 EG9yr6l9zoAnLu44R+97ezLfWl9d13NXJ2EhiE7odFLDCak3HjX/CFgfN ipNpZr1ZcQjaLR7AgOIk6OIb1A92RJ+oekQPaIN2D/DxJElKsvnu2y+wj oxLFlGDKu69HrTMCqp8F9SXZ1LTZbUSSc8oV0WIBsOwyVxd2aOXB+1elU 6BmczfbBjkIUy+iVdVnhJDyYWf6eLtlSdsBqwVa/OJlnF1j8g+u9E5LuD goVycaMiGsNRQk1kfETz0NNmxuGQrt++bTFaIAUJKAlJuCXGIr9GLSll/ w==; X-IronPort-AV: E=McAfee;i="6600,9927,10915"; a="1041518" X-IronPort-AV: E=Sophos;i="6.04,253,1695711600"; d="scan'208";a="1041518" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Dec 2023 12:19:49 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10915"; a="764455696" X-IronPort-AV: E=Sophos;i="6.04,253,1695711600"; d="scan'208";a="764455696" Received: from lkp-server02.sh.intel.com (HELO b07ab15da5fe) ([10.239.97.151]) by orsmga007.jf.intel.com with ESMTP; 05 Dec 2023 12:19:47 -0800 Received: from kbuild by b07ab15da5fe with local (Exim 4.96) (envelope-from ) id 1rAbtR-0009fY-1r; Tue, 05 Dec 2023 20:19:45 +0000 Date: Wed, 6 Dec 2023 04:19:12 +0800 From: kernel test robot To: Stafford Horne Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org, Luc Van Oostenryck Subject: drivers/vhost/vringh.c:567:18: sparse: sparse: cast to restricted __virtio16 Message-ID: <202312060454.fifW2MFE-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: bee0e7762ad2c6025b9f5245c040fcc36ef2bde8 commit: d877322bc1adcab9850732275670409e8bcca4c4 openrisc: Fix issue with get_user for 64-bit values date: 3 years, 3 months ago config: openrisc-randconfig-r131-20231102 (https://download.01.org/0day-ci/archive/20231206/202312060454.fifW2MFE-lkp@intel.com/config) compiler: or1k-linux-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20231206/202312060454.fifW2MFE-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202312060454.fifW2MFE-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> drivers/vhost/vringh.c:567:18: sparse: sparse: cast to restricted __virtio16 >> drivers/vhost/vringh.c:567:18: sparse: sparse: cast to restricted __virtio16 >> drivers/vhost/vringh.c:567:18: sparse: sparse: cast to restricted __virtio16 >> drivers/vhost/vringh.c:567:18: sparse: sparse: restricted __virtio16 degrades to integer >> drivers/vhost/vringh.c:567:18: sparse: sparse: restricted __virtio16 degrades to integer >> drivers/vhost/vringh.c:567:18: sparse: sparse: cast to restricted __virtio16 >> drivers/vhost/vringh.c:567:18: sparse: sparse: cast to restricted __virtio16 vim +567 drivers/vhost/vringh.c f87d0fbb579818 Rusty Russell 2013-03-20 562 f87d0fbb579818 Rusty Russell 2013-03-20 563 /* Userspace access helpers: in this case, addresses are really userspace. */ b9f7ac8c72894c Michael S. Tsirkin 2014-12-12 564 static inline int getu16_user(const struct vringh *vrh, u16 *val, const __virtio16 *p) f87d0fbb579818 Rusty Russell 2013-03-20 565 { b9f7ac8c72894c Michael S. Tsirkin 2014-12-12 566 __virtio16 v = 0; b9f7ac8c72894c Michael S. Tsirkin 2014-12-12 @567 int rc = get_user(v, (__force __virtio16 __user *)p); b9f7ac8c72894c Michael S. Tsirkin 2014-12-12 568 *val = vringh16_to_cpu(vrh, v); b9f7ac8c72894c Michael S. Tsirkin 2014-12-12 569 return rc; f87d0fbb579818 Rusty Russell 2013-03-20 570 } f87d0fbb579818 Rusty Russell 2013-03-20 571 :::::: The code at line 567 was first introduced by commit :::::: b9f7ac8c72894c19bf258a54ecaa708df4ffbe80 vringh: update for virtio 1.0 APIs :::::: TO: Michael S. Tsirkin :::::: CC: Michael S. Tsirkin -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki