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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 B4F6BC49EA2 for ; Wed, 16 Jun 2021 19:05:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C4F4613BD for ; Wed, 16 Jun 2021 19:05:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232281AbhFPTHk (ORCPT ); Wed, 16 Jun 2021 15:07:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59098 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232263AbhFPTHj (ORCPT ); Wed, 16 Jun 2021 15:07:39 -0400 Received: from mail-lj1-x22b.google.com (mail-lj1-x22b.google.com [IPv6:2a00:1450:4864:20::22b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 835BBC061574; Wed, 16 Jun 2021 12:05:31 -0700 (PDT) Received: by mail-lj1-x22b.google.com with SMTP id l15so1065996lje.10; Wed, 16 Jun 2021 12:05:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=va0+qiXaJa2dkVAtKTxaRs0owh7E90Unzjnj9OwUGvA=; b=AXtNeQfL7+Cja+Hd7a0iIQvkE0V/kOtsEiNQlb3L8fuy8WTuthYn7SUKvU2E9kFac1 8R9b86zBxTlvf23J4c0a2K5F3OrbYlLrQ1IP4q0gaN51ZQ2OdE7RV7wULeDtzRHO4hNT DvwLlWaeis0nnHTVaUlXDGBySPD6/X4gETCe0IPXeJMoX6NFlPfvP54CmafIRRZBGn4Z kJRmJrfwxHrdD8CgYNzlFCpZ4h9aT+REdmjkFqM0Zep6gq4Uon2wQi0oGJTLX16HQp8r fIjMJnixn8kfGi5yltKGJRjs4RfQ24Dyd2/2PNbCpZ4vXRL9gA/7q6ou2uP3N2xbotWj H6Hg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=va0+qiXaJa2dkVAtKTxaRs0owh7E90Unzjnj9OwUGvA=; b=SskL1CR/ENN7AHQVTU+U7b6ZUThNMuknnnHI+ln/NZa2GvfwtWDy1J9VvywnxmPqnL CwEYQOnmKpbKPAPkkiSEyaNHsrZTypceVcB/5I9FMW7PX4n1JJKBpz86gQSff7g+LZO/ BXOf2aUGjYk8cOve44Yt5BhIn1wLhqYN8drG946AP3/+hxHo0ORnGjtPHZ/ErSVEQRp4 9vPSiFuSK677oUEwLet4Cpw9rtY6O9ryzh4877JrBxW43f3o3gwmRyUdgf6Q8tre2rHi sM9Tg08YjI9G/hakBSf8qooqcDWLyLJ8wvu+ad8kpZ29aHpTkUqYYjc5o0E9dAU6xH+R JI+g== X-Gm-Message-State: AOAM532ilhFzMw5VGLJwv+tNHYcSKNaRD10Lgqo6VayzjueyuRjLHjVE hOS7CNmzFyzAIbV7sHo3axw= X-Google-Smtp-Source: ABdhPJxcw+aqBdNTD93l8/H4iNjuUjU9I2NycrrJ1U6uxBx4UiOGx9JKWBmW1f9n/PFKvZIH/a1Nuw== X-Received: by 2002:a2e:9b8f:: with SMTP id z15mr1162603lji.304.1623870329893; Wed, 16 Jun 2021 12:05:29 -0700 (PDT) Received: from localhost.localdomain (94-29-29-31.dynamic.spd-mgts.ru. [94.29.29.31]) by smtp.gmail.com with ESMTPSA id e20sm365951ljk.67.2021.06.16.12.05.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Jun 2021 12:05:29 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Zhang Rui , Daniel Lezcano , Amit Kucheria , Andreas Westman Dorcsak , Maxim Schwalm , Svyatoslav Ryhel , Ihor Didenko , Ion Agorria , Matt Merhar , Peter Geis Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH v4 2/6] thermal: thermal_of: Stop zone device before unregistering it Date: Wed, 16 Jun 2021 22:04:13 +0300 Message-Id: <20210616190417.32214-3-digetx@gmail.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210616190417.32214-1-digetx@gmail.com> References: <20210616190417.32214-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org 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 --- 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 5b76f9a1280d..6379f26a335f 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; -- 2.30.2