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: 12470027 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=-17.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 43C12C432BE for ; Wed, 1 Sep 2021 17:50:04 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F0CCE61059 for ; Wed, 1 Sep 2021 17:50:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org F0CCE61059 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=vPnu8ho81Je8HAmrJokzDDG4+oj0L61RtpJ2QNMK23E=; b=dHhqiMVHgwb5Rx qfVyStPbMftP3SOaT0hx+ZF49lWKT5kaYb7TXgck7O1AAN5aiDl157EwYYgGezl3rGSGgi5aPQpK+ NxqfLXSC/tU8dCmYNhWecyMLKNDANbf8rX70wRnvYIIW9OHFPdUFDcbnkUPNFoAyL9TGo/k/wCQmz bXtuCnELSVyXFTvIJ8253prmNmyipSvW+EgZJl3SuH16i/RfD7ecjtvgd9Dv1HjbUGDa0q8Qd/Km7 wyeqUpmaKlX2TzCONUmPCQ7FlSpQgoyR/9Eb5LUbH2Bei4l5QkYY6dKmb4Rr/A/3rVSgZ5Bqc7X1j pjSHsDWIyda3uTe8dZ4A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLUMt-006rxw-3k; Wed, 01 Sep 2021 17:49:47 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mLUMn-006rva-Qu for linux-mediatek@lists.infradead.org; Wed, 01 Sep 2021 17:49:45 +0000 X-UUID: 83e2401bd96644b594c130b2bb6cd9a9-20210901 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=Pi1LED52c+Y/vVEqkKWW0nNAvqahXT9CfX1gwjXpKOM=; b=akJFmnS8Rdl5aIVkkNN6RwNzGeje9pXndW2HSgdKAtT+ibMMYMigJAb1a0FqngjdvV4RVbohkAueFL7OdG8+B7JFNLv7P2PvDcdANsuKTr3fYwj+iz+yFA95yCaMkFN9nTPBl5srY6RwhOWLlMTHMaM2Fif3HR5iupzXzQVCkAQ=; X-UUID: 83e2401bd96644b594c130b2bb6cd9a9-20210901 Received: from mtkcas67.mediatek.inc [(172.29.193.45)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 893830076; Wed, 01 Sep 2021 10:49:38 -0700 Received: from mtkmbs05n2.mediatek.inc (172.21.101.140) by MTKMBS62N2.mediatek.inc (172.29.193.42) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 1 Sep 2021 10:49:36 -0700 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210901_104942_195374_FBFA7DEC X-CRM114-Status: GOOD ( 10.79 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.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);