Hi Steve!

quoted

quoted

What's the test that was run, and how did it enable function tracing?

The tracing was enabled within an init script using the following bash commands:
     if ! grep -q "/sys/kernel/debug" /proc/mounts; then
         mount -t debugfs nodev /sys/kernel/debug
     fi
     if [ -d /sys/kernel/debug/tracing ]; then
         (
         cd /sys/kernel/debug/tracing
         echo "function" > current_tracer
         echo "1" > tracing_on

         echo "1" > /proc/sys/kernel/ftrace_dump_on_oops
         )
     fi


The test was to reboot the PC permanently (every minute).
The reboot has been initiated by another PC that remotely controls the PC under test.

How reproducible is this?

Unfortunately this is not really reproducable.
I caught this bug after approx. 400 reboots while hunting another bug...

Regards

Mathias