From patchwork Sun Jul 4 18:02:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: thermal-bot for Lad Prabhakar X-Patchwork-Id: 470348 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=-20.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED 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 5CA5FC11F67 for ; Sun, 4 Jul 2021 18:02:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 40715613D1 for ; Sun, 4 Jul 2021 18:02:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229703AbhGDSFJ (ORCPT ); Sun, 4 Jul 2021 14:05:09 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:55822 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229649AbhGDSFH (ORCPT ); Sun, 4 Jul 2021 14:05:07 -0400 Date: Sun, 04 Jul 2021 18:02:30 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1625421751; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=P2bOABJSUPaOltw/CsIIIt8UAzEBFBY8/8CEGv21obI=; b=JtvLKw2ZTmx9tv0py3rom/so7kDeexAIMz7O31ErfhnVQi3/uRXcYsgZv257qpUrf33jhL ARQnhkkIuXVko7jsmlM931v95uw/7UoMSs+Cl4VysvnVpo1jHXmx/575uQ5XTk3+9wSfIz uVgrFp7itcoTUyu7d0S//K85bDwrSPTXeVtrTW+csbENCYlRBVPjBAGcOTPkn7oktc5UUK a97Iski+nDw9X7TLZYXojPdi8aNHTDKabn+RItWu2etv5rq/9cYY1cLSvEBbF1ixEdCQUU vwGIEeZYxX6F8DMSTcHqRWT8+KzNDc/p4djy2lq3XyA+dS2JTMMWFghrGphZgw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1625421751; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=P2bOABJSUPaOltw/CsIIIt8UAzEBFBY8/8CEGv21obI=; b=k2DhAy1xLIXBCRX78oeAHCNgfv3c76viRmDxiWvAFUsBd/U8ms5uW5xy7W+TUNYVT182y6 0AZIw7wafgrhaRDA== From: "thermal-bot for Dmitry Osipenko" Sender: tip-bot2@linutronix.de Reply-to: linux-pm@vger.kernel.org To: linux-pm@vger.kernel.org Subject: [thermal: thermal/next] thermal/core/thermal_of: Stop zone device before unregistering it Cc: Dmitry Osipenko , Daniel Lezcano , rui.zhang@intel.com, amitk@kernel.org In-Reply-To: <20210616190417.32214-3-digetx@gmail.com> References: <20210616190417.32214-3-digetx@gmail.com> MIME-Version: 1.0 Message-ID: <162542175042.395.9959013006651549705.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The following commit has been merged into the thermal/next branch of thermal: Commit-ID: 5e5c9f9a75fc4532980c2e699caf8a36070a3a2e Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux.git//5e5c9f9a75fc4532980c2e699caf8a36070a3a2e Author: Dmitry Osipenko AuthorDate: Wed, 16 Jun 2021 22:04:13 +03:00 Committer: Daniel Lezcano CommitterDate: Sun, 04 Jul 2021 18:28:04 +02:00 thermal/core/thermal_of: Stop zone device before unregistering it Zone device is enabled after thermal_zone_of_sensor_register() completion, but it's not disabled before senor is unregistered, leaving temperature polling active. This results in accessing a disabled zone device and produces a warning about this problem. Stop zone device before unregistering it in order to fix this "use-after-free" problem. Signed-off-by: Dmitry Osipenko Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20210616190417.32214-3-digetx@gmail.com --- drivers/thermal/thermal_of.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c index 5b76f9a..6379f26 100644 --- a/drivers/thermal/thermal_of.c +++ b/drivers/thermal/thermal_of.c @@ -559,6 +559,9 @@ void thermal_zone_of_sensor_unregister(struct device *dev, if (!tz) return; + /* stop temperature polling */ + thermal_zone_device_disable(tzd); + mutex_lock(&tzd->lock); tzd->ops->get_temp = NULL; tzd->ops->get_trend = NULL;