Bug#869658: linux: system freezes when dell-smm-hwmon reads fan speed

[Carmelo C <carmelo.debian@gmail.com>]

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