In my system, dell-smm-hwmon is linked to the following folder: /sys/class/hwmon/hwmon2/
The freeze occurs only when I type the following commands: cat /sys/class/hwmon/hwmon2/fan1_input cat /sys/class/hwmon/hwmon2/fan2_input cat /sys/class/hwmon/hwmon2/fan3_input In these commands, the freeze does not occur: cat /sys/class/hwmon/hwmon2/temp1_input cat /sys/class/hwmon/hwmon2/temp2_input cat /sys/class/hwmon/hwmon2/temp3_input cat /sys/class/hwmon/hwmon2/temp4_input In this link, more information: https://bugzilla.kernel.org/show_bug.cgi?id=112021
