From patchwork Thu Apr 29 11:08:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 429668 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 32DAAC433B4 for ; Thu, 29 Apr 2021 11:08:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F1B1A6144B for ; Thu, 29 Apr 2021 11:08:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240661AbhD2LJl (ORCPT ); Thu, 29 Apr 2021 07:09:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52468 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234416AbhD2LJc (ORCPT ); Thu, 29 Apr 2021 07:09:32 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 17275C06138F for ; Thu, 29 Apr 2021 04:08:46 -0700 (PDT) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lc4X6-00074r-Dv; Thu, 29 Apr 2021 13:08:36 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lc4X4-0000yH-L1; Thu, 29 Apr 2021 13:08:34 +0200 From: Oleksij Rempel To: Woojung Huh , UNGLinuxDriver@microchip.com, Andrew Lunn , Florian Fainelli , Vivien Didelot , Vladimir Oltean , "David S. Miller" , Jakub Kicinski Cc: Oleksij Rempel , Colin Ian King , kernel@pengutronix.de, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Russell King , Michael Grzeschik Subject: [PATCH net-next v1 1/3] net: dsa: ksz: ksz8863_smi_probe: fix possible NULL pointer dereference Date: Thu, 29 Apr 2021 13:08:31 +0200 Message-Id: <20210429110833.2181-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Fix possible NULL pointer dereference in case devm_kzalloc() failed to allocate memory. Fixes: 60a364760002 ("net: dsa: microchip: Add Microchip KSZ8863 SMI based driver support") Reported-by: Colin Ian King Signed-off-by: Oleksij Rempel Reviewed-by: Andrew Lunn --- drivers/net/dsa/microchip/ksz8863_smi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz8863_smi.c b/drivers/net/dsa/microchip/ksz8863_smi.c index 30d97ea7a949..9fb38e99001a 100644 --- a/drivers/net/dsa/microchip/ksz8863_smi.c +++ b/drivers/net/dsa/microchip/ksz8863_smi.c @@ -147,6 +147,9 @@ static int ksz8863_smi_probe(struct mdio_device *mdiodev) int i; ksz8 = devm_kzalloc(&mdiodev->dev, sizeof(struct ksz8), GFP_KERNEL); + if (!ksz8) + return -ENOMEM; + ksz8->priv = mdiodev; dev = ksz_switch_alloc(&mdiodev->dev, ksz8); From patchwork Thu Apr 29 11:08:33 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 429669 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 10676C433B4 for ; Thu, 29 Apr 2021 11:08:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D42AC61447 for ; Thu, 29 Apr 2021 11:08:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240469AbhD2LJd (ORCPT ); Thu, 29 Apr 2021 07:09:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52462 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232108AbhD2LJc (ORCPT ); Thu, 29 Apr 2021 07:09:32 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B5007C06138C for ; Thu, 29 Apr 2021 04:08:45 -0700 (PDT) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lc4X6-00074t-Dw; Thu, 29 Apr 2021 13:08:36 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lc4X4-0000zq-Nb; Thu, 29 Apr 2021 13:08:34 +0200 From: Oleksij Rempel To: Woojung Huh , UNGLinuxDriver@microchip.com, Andrew Lunn , Florian Fainelli , Vivien Didelot , Vladimir Oltean , "David S. Miller" , Jakub Kicinski Cc: Oleksij Rempel , kernel@pengutronix.de, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Russell King , Michael Grzeschik Subject: [PATCH net-next v1 3/3] net: dsa: ksz: ksz8863_smi_probe: set proper return value for ksz_switch_alloc() Date: Thu, 29 Apr 2021 13:08:33 +0200 Message-Id: <20210429110833.2181-3-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210429110833.2181-1-o.rempel@pengutronix.de> References: <20210429110833.2181-1-o.rempel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org ksz_switch_alloc() will return NULL only if allocation is failed. So, the proper return value is -ENOMEM. Fixes: 60a364760002 ("net: dsa: microchip: Add Microchip KSZ8863 SMI based driver support") Signed-off-by: Oleksij Rempel --- drivers/net/dsa/microchip/ksz8863_smi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/dsa/microchip/ksz8863_smi.c b/drivers/net/dsa/microchip/ksz8863_smi.c index 9fb38e99001a..11293485138c 100644 --- a/drivers/net/dsa/microchip/ksz8863_smi.c +++ b/drivers/net/dsa/microchip/ksz8863_smi.c @@ -154,7 +154,7 @@ static int ksz8863_smi_probe(struct mdio_device *mdiodev) dev = ksz_switch_alloc(&mdiodev->dev, ksz8); if (!dev) - return -EINVAL; + return -ENOMEM; for (i = 0; i < ARRAY_SIZE(ksz8863_regmap_config); i++) { rc = ksz8863_regmap_config[i];