1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 6f8d8f971212..310e40ab00b6 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -225,6 +225,12 @@ passive_store(struct device *dev, struct device_attribute *attr,
         if (!sscanf(buf, "%d\n", &state))
                 return -EINVAL;
 
+        /* sanity check: values below 1000 millicelcius don't make sense
+         * and can cause the system to go into a thermal heart attack
+         */
+        if (state && state < 1000)
+                return -EINVAL;
+
         if (state && !tz->forced_passive) {
                 mutex_lock(&thermal_list_lock);
                 list_for_each_entry(cdev, &thermal_cdev_list, node) {