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thermal: thermal_hwmon: Fix a kernel NULL pointer dereference

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When the hwmon device node of a thermal zone device is not found,
using hwmon->device causes a kernel NULL pointer dereference.

Fixes: dec07d399cc8 ("thermal: Don't use 'device' internal thermal zone structure field")
Reported-by: Preble Adam C <adam.c.preble@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Zhang Rui 2023-03-29 17:00:55 +08:00 committed by Rafael J. Wysocki
parent 85b52122e5
commit 4eb7c2f3a3
1 changed files with 1 additions and 1 deletions
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2
drivers/thermal/thermal_hwmon.c
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@ -229,7 +229,7 @@ void thermal_remove_hwmon_sysfs(struct thermal_zone_device *tz)
hwmon = thermal_hwmon_lookup_by_type(tz);
if (unlikely(!hwmon)) {
/* Should never happen... */
dev_dbg(hwmon->device, "hwmon device lookup failed!\n");
dev_dbg(&tz->device, "hwmon device lookup failed!\n");
return;
}