From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Geert Uytterhoeven , =?UTF-8?q?Niklas=20S=C3=B6derlund?= , Eduardo Valentin , Sasha Levin Subject: [PATCH 4.19 128/361] thermal: rcar_thermal: Prevent doing work after unbind Date: Sun, 11 Nov 2018 14:17:55 -0800 Message-Id: <20181111221638.153596707@linuxfoundation.org> In-Reply-To: <20181111221619.915519183@linuxfoundation.org> References: <20181111221619.915519183@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit List-ID: 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Geert Uytterhoeven [ Upstream commit 697ee786f15d7b65c7f3045d45fe3a05d28e0911 ] When testing bind/unbind on r8a7791/koelsch: WARNING: CPU: 1 PID: 697 at lib/debugobjects.c:329 debug_print_object+0x8c/0xb4 ODEBUG: free active (active state 0) object type: timer_list hint: delayed_work_timer_fn+0x0/0x10 This happens if the workqueue runs after the device has been unbound. Fix this by cancelling any queued work during remove. Fixes: e0a5172e9eec7f0d ("thermal: rcar: add interrupt support") Signed-off-by: Geert Uytterhoeven Reviewed-by: Niklas Söderlund Signed-off-by: Eduardo Valentin Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/thermal/rcar_thermal.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -453,6 +453,7 @@ static int rcar_thermal_remove(struct pl rcar_thermal_for_each_priv(priv, common) { rcar_thermal_irq_disable(priv); + cancel_delayed_work_sync(&priv->work); if (priv->chip->use_of_thermal) thermal_remove_hwmon_sysfs(priv->zone); else