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 X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6FA57C76195 for ; Mon, 15 Jul 2019 14:46:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3FB7520896 for ; Mon, 15 Jul 2019 14:46:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563201999; bh=9ZBpCNdidHWzhwHJsmWMIf1Am1/Ul8xkGUop7dmrjr8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=b3+hgSaMVX+naCEnvVjTHvKyupqBpGZ9STNhP41ZLiEhleLqSRgjRUWDGOct6fTMl mtW3cW6VDDl860Id0Tu+m10rJR4z5YZhqjisrvCjFa5556KMTNG2/q8rdvkNGVWcfk l39/OOLlRRtXAtAiJqlTsZjKfEqJdzUt1d6ewxHM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405098AbfGOOqi (ORCPT ); Mon, 15 Jul 2019 10:46:38 -0400 Received: from mail.kernel.org ([198.145.29.99]:37850 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405082AbfGOOqf (ORCPT ); Mon, 15 Jul 2019 10:46:35 -0400 Received: from sasha-vm.mshome.net (unknown [73.61.17.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D1D8A20896; Mon, 15 Jul 2019 14:46:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563201994; bh=9ZBpCNdidHWzhwHJsmWMIf1Am1/Ul8xkGUop7dmrjr8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1HWZWIfYLobxpQGyZvtLOfXAISBBZkvhxenPxN/lpTNo1JYgctf+wqOHD0OxdIjJT jNR0du8sqofEr28b4jQYuAVIq/Bkh7jmbnSIFkuPXAc/W/5PyztAJCNy5qFYHyoTkN f+fTDrTuVowTx9sz2PMinca9V7ATAjiBCzvbEojI= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Ioana Ciornei , Andrew Lunn , Florian Fainelli , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.4 17/53] net: phy: Check against net_device being NULL Date: Mon, 15 Jul 2019 10:44:59 -0400 Message-Id: <20190715144535.11636-17-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190715144535.11636-1-sashal@kernel.org> References: <20190715144535.11636-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ioana Ciornei [ Upstream commit 82c76aca81187b3d28a6fb3062f6916450ce955e ] In general, we don't want MAC drivers calling phy_attach_direct with the net_device being NULL. Add checks against this in all the functions calling it: phy_attach() and phy_connect_direct(). Signed-off-by: Ioana Ciornei Suggested-by: Andrew Lunn Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/phy/phy_device.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 70f26b30729c..c6a87834723d 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -472,6 +472,9 @@ int phy_connect_direct(struct net_device *dev, struct phy_device *phydev, { int rc; + if (!dev) + return -EINVAL; + rc = phy_attach_direct(dev, phydev, phydev->dev_flags, interface); if (rc) return rc; @@ -704,6 +707,9 @@ struct phy_device *phy_attach(struct net_device *dev, const char *bus_id, struct device *d; int rc; + if (!dev) + return ERR_PTR(-EINVAL); + /* Search the list of PHY devices on the mdio bus for the * PHY with the requested name */ -- 2.20.1