diff --git a/Documentation/hwmon/coretemp.rst b/Documentation/hwmon/coretemp.rst
index 349301683381..09f885a847e3 100644
--- a/Documentation/hwmon/coretemp.rst
+++ b/Documentation/hwmon/coretemp.rst
@@ -50,6 +50,9 @@ All sysfs entries are named with their core_id (represented here by 'X').
 
 ================= ========================================================
 tempX_input	  Core temperature (in millidegrees Celsius).
+		  Reading fails with -ENODATA while the CPU reports the
+		  temperature as invalid. Some CPUs do this when the
+		  temperature is too low to be measured.
 tempX_max	  Maximum recommended operating temperature (Tcontrol).
 		  All cooling devices should be turned on.
 tempX_crit	  Maximum junction temperature (in millidegrees Celsius).
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index ace51e08e72d..bee2c9896d4c 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -60,6 +60,8 @@ enum coretemp_attr_index {
 
 /*
  * Per-Core Temperature Data
+ * @temp_valid: Whether the CPU reported @temp as valid. @temp is not
+ *		reported when this is false.
  * @tjmax: The static tjmax value when tjmax cannot be retrieved from
  *		IA32_TEMPERATURE_TARGET MSR.
  * @last_updated: The time when the current temperature value was updated
@@ -72,6 +74,7 @@ enum coretemp_attr_index {
  */
 struct temp_data {
 	int temp;
+	bool temp_valid;
 	int tjmax;
 	unsigned long last_updated;
 	unsigned int cpu;
@@ -398,7 +401,8 @@ static ssize_t show_temp(struct device *dev,
 {
 	struct msr val;
 	struct temp_data *tdata = container_of(devattr, struct temp_data, sd_attrs[ATTR_TEMP]);
-	int tjmax;
+	int tjmax, temp;
+	bool valid;
 
 	mutex_lock(&tdata->update_lock);
 
@@ -407,17 +411,22 @@ static ssize_t show_temp(struct device *dev,
 	if (time_after(jiffies, tdata->last_updated + HZ)) {
 		rdmsrq_on_cpu(tdata->cpu, tdata->status_reg, &val.q);
 		/*
-		 * Ignore the valid bit. In all observed cases the register
-		 * value is either low or zero if the valid bit is 0.
-		 * Return it instead of reporting an error which doesn't
-		 * really help at all.
+		 * Bit 31 indicates whether the reading is valid. Some CPUs
+		 * clear it while the temperature is too low to be measured.
+		 * Such a reading is not a temperature. Do not report it.
 		 */
+		tdata->temp_valid = (val.l >> 31) & 1;
 		tdata->temp = tjmax - ((val.l >> 16) & 0xff) * 1000;
 		tdata->last_updated = jiffies;
 	}
 
+	valid = tdata->temp_valid;
+	temp = tdata->temp;
 	mutex_unlock(&tdata->update_lock);
-	return sprintf(buf, "%d\n", tdata->temp);
+
+	if (!valid)
+		return -ENODATA;
+	return sprintf(buf, "%d\n", temp);
 }
 
 static int create_core_attrs(struct temp_data *tdata, struct device *dev)