From patchwork Wed Sep 1 17:49:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryder Lee X-Patchwork-Id: 12470025 X-Patchwork-Delegate: nbd@nbd.name 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,UNPARSEABLE_RELAY,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 241F0C4320E for ; Wed, 1 Sep 2021 17:50:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 11A0D610A2 for ; Wed, 1 Sep 2021 17:50:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346720AbhIARvh (ORCPT ); Wed, 1 Sep 2021 13:51:37 -0400 Received: from mailgw02.mediatek.com ([210.61.82.184]:32830 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1347245AbhIARuf (ORCPT ); Wed, 1 Sep 2021 13:50:35 -0400 X-UUID: 1855732033c247dc9f36526994bfad6f-20210902 X-UUID: 1855732033c247dc9f36526994bfad6f-20210902 Received: from mtkcas06.mediatek.inc [(172.21.101.30)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 375468517; Thu, 02 Sep 2021 01:49:36 +0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs05n2.mediatek.inc (172.21.101.140) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 2 Sep 2021 01:49:35 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Thu, 2 Sep 2021 01:49:35 +0800 From: Ryder Lee To: Felix Fietkau CC: Lorenzo Bianconi , Shayne Chen , Evelyn Tsai , , , Ryder Lee Subject: [PATCH v5 2/2] mt76: mt7615: fix hwmon temp sensor mem use-after-free Date: Thu, 2 Sep 2021 01:49:31 +0800 Message-ID: <650546c0dee92042fc019941786cfdbce2424812.1630515790.git.ryder.lee@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: References: MIME-Version: 1.0 X-MTK: N Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org Without this change, garbage is seen in the hwmon name and sensors output for mt7615 is garbled. Fixes: 109e505ad944 ("mt76: mt7615: add thermal sensor device support") Signed-off-by: Ryder Lee --- v5: Use devm_kstrdup on the wiphy name as suggested. --- drivers/net/wireless/mediatek/mt76/mt7615/init.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c index 05235a60d413..7c584ca43b2d 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c @@ -49,12 +49,13 @@ int mt7615_thermal_init(struct mt7615_dev *dev) { struct wiphy *wiphy = mt76_hw(dev)->wiphy; struct device *hwmon; + const char *name; if (!IS_REACHABLE(CONFIG_HWMON)) return 0; - hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, - wiphy_name(wiphy), dev, + name = devm_kstrdup(&wiphy->dev, wiphy_name(wiphy), GFP_KERNEL); + hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, dev, mt7615_hwmon_groups); if (IS_ERR(hwmon)) return PTR_ERR(hwmon);