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 68D7FEE4996 for ; Mon, 21 Aug 2023 17:48:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234846AbjHURsu (ORCPT ); Mon, 21 Aug 2023 13:48:50 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43382 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236229AbjHURss (ORCPT ); Mon, 21 Aug 2023 13:48:48 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7C1AD113 for ; Mon, 21 Aug 2023 10:48:47 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 12AB261350 for ; Mon, 21 Aug 2023 17:48:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EBB59C433C7; Mon, 21 Aug 2023 17:48:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1692640126; bh=XZDt43brnFTJkb8ScLQNvWMVfoRbXfvHIPbaNmZldAg=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=F6yDjvDCIsPvanRvMO9iP5ovPq8w7hv8wc9g7fkg0xbVHYVnJTD+KMBrgLS5lVWTH znqU9oXtTt+NfkBsSq3y+2AVLdXvIXqBp8iUwB8HR7x9mGi1TzhwCmBK3cO4B6HRS7 E+T4PJXm1v6bhzzbs2O8uPBHaaYEsESUeE3HavF4sXHAK+uXw2x3xnbETG/N8SvJ6q Q5t5YU8mIqIVHWRS7D/eySV230GwrXA7iSEAJRHtL4Xd47ecpMG1JbybOQOPHIDqJ1 bQOyBOmoxbwMBvek8X5nOA2ptpja3emOax+vjUvWswoTL+nsoaIETxXarARXgyEoxJ yVcQH2bSjL8rQ== Date: Mon, 21 Aug 2023 10:48:44 -0700 From: Jakub Kicinski To: Ido Schimmel Cc: davem@davemloft.net, netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, syzbot+5ba06978f34abb058571@syzkaller.appspotmail.com, wg@grandegger.com, mkl@pengutronix.de, idosch@nvidia.com, lucien.xin@gmail.com, xemul@parallels.com, socketcan@hartkopp.net, linux-can@vger.kernel.org Subject: Re: [PATCH net] net: validate veth and vxcan peer ifindexes Message-ID: <20230821104844.19dd4563@kernel.org> In-Reply-To: References: <20230819012602.239550-1-kuba@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org On Sun, 20 Aug 2023 19:08:13 +0300 Ido Schimmel wrote: > There is another report here [1] with a reproducer [2]. Even with this > patch, the reproducer can still trigger the warning on net-next. Don't > we also need to reject a negative ifindex in the ancillary header? At > least with the following diff the warning does not trigger anymore: Yeah, definitely, please go ahead and submit. Is "ancillary header" used more commonly as a term? in gnel we usually call this thing "user header" or "fixed header".