From nobody Mon Apr 6 01:42:01 2026 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 4E095C6FA83 for ; Mon, 12 Sep 2022 19:48:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229511AbiILTr6 (ORCPT ); Mon, 12 Sep 2022 15:47:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41876 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229503AbiILTrv (ORCPT ); Mon, 12 Sep 2022 15:47:51 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EC3F1481C3 for ; Mon, 12 Sep 2022 12:47:50 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id p12-20020a259e8c000000b006958480b858so8165442ybq.12 for ; Mon, 12 Sep 2022 12:47:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:from:subject:message-id:mime-version:date:from:to:cc:subject :date; bh=GgY4PD0XdGxMhCUuq3XqhucmQpNzXv+vjyVGjdIJj2M=; b=V6C+VfKk/2QPgJkI01g/ulQ507A+EpfDlY95WsN1ZobPp77HMgvmJE1SJ63ZqKEqjm O6wHz+82hTeMs+E5hAFLuFtGh0rpPXzVTzY3apHgwavbbEwmrPYjnYhr9XTnPkSoMXBM x34E87UW41lC+Hevg6hT3L2/VuyRcpSH0bPrBPNKSmP9T92dWjQsQ5ts6WxPO5WSEgk8 8lxUULlr2f8AM+kLOdkjCnicwASkSWX/ShO7fJbyiklvH47HGWqUnX3ztRTW0ZyXUPUN IV0YbiFzwztjTe2vya12UKYFWxWvfZQjf++rU9noncjlCfrkqp16oEM1XZJ2sxrWNLIh u+CQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:from:subject:message-id:mime-version:date:x-gm-message-state :from:to:cc:subject:date; bh=GgY4PD0XdGxMhCUuq3XqhucmQpNzXv+vjyVGjdIJj2M=; b=7NbgKaLxi3120Ju3jfMMKbKYtmrxKdf2xr5nel0mPqIG8AJ8vhtVIWiDRf3DO9PP2e VaHFQ0j9/QUaZ8r6B5cvGtwvumj4jnC7/j+lYME9JjL9nKsMHNfdv1c+IRLDwNeleUGk 02Tnxh4Ct4xLk8WzKiyrhpTRmYKEBM7CUlH/kol3KKXfnbHwV0evfdsswsf5fDIOQ4fC U6OOHuSCO3/7auMmGG/2RyAjOV9bLdZcIh8VSiPDnaOZv6OHYniwauprEpoDMR0+mDh7 NVBCtrvhxlqFxbkluIyQsZ6X/NZvhNZ8ce7P3GIjouS3AGuJ52/bBnXMRRQ3eUjEDJhm 8mfw== X-Gm-Message-State: ACgBeo2zpjERA0d/tn0q81BvoMQWdHdi5C0Qig8JQ8BRiB3I4c7sopXi 7ErAj1cCtyPSF0TNcvEA4adzZ+7nkQ== X-Google-Smtp-Source: AA6agR5GPQr1uNUFoyJ5ver00tftXGD7aWRLmNZklbPxaADwNWwe0WJWzmPX/omhMP3EjY1GkbnBhuIDlg== X-Received: from nhuck.c.googlers.com ([fda3:e722:ac3:cc00:14:4d90:c0a8:39cc]) (user=nhuck job=sendgmr) by 2002:a05:6902:512:b0:6a8:24a1:5daf with SMTP id x18-20020a056902051200b006a824a15dafmr22863793ybs.592.1663012070252; Mon, 12 Sep 2022 12:47:50 -0700 (PDT) Date: Mon, 12 Sep 2022 12:47:19 -0700 Mime-Version: 1.0 X-Mailer: git-send-email 2.37.2.789.g6183377224-goog Message-ID: <20220912194722.809525-1-nhuck@google.com> Subject: [PATCH] net: davicom: Fix return type of dm9000_start_xmit From: Nathan Huckleberry Cc: Nathan Huckleberry , Dan Carpenter , llvm@lists.linux.dev, "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Nathan Chancellor , Nick Desaulniers , Tom Rix , netdev@vger.kernel.org, linux-kernel@vger.kernel.org To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The ndo_start_xmit field in net_device_ops is expected to be of type netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb, struct net_device *dev). The mismatched return type breaks forward edge kCFI since the underlying function definition does not match the function hook definition. The return type of dm9000_start_xmit should be changed from int to netdev_tx_t. Reported-by: Dan Carpenter Link: https://github.com/ClangBuiltLinux/linux/issues/1703 Cc: llvm@lists.linux.dev Signed-off-by: Nathan Huckleberry Reviewed-by: Nathan Chancellor --- drivers/net/ethernet/davicom/dm9000.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/d= avicom/dm9000.c index 0985ab216566..186a5e0a7862 100644 --- a/drivers/net/ethernet/davicom/dm9000.c +++ b/drivers/net/ethernet/davicom/dm9000.c @@ -1012,7 +1012,7 @@ static void dm9000_send_packet(struct net_device *dev, * Hardware start transmission. * Send a packet to media from the upper layer. */ -static int +static netdev_tx_t dm9000_start_xmit(struct sk_buff *skb, struct net_device *dev) { unsigned long flags; --=20 2.37.2.789.g6183377224-goog