Comment 24 for bug 897773

I was asked earlier for a dmesg dump from when this is triggered. Here it is, but you'll notice that there's nothing there. This is an instantaneous hang for the kernel, so it never has a chance to write anything to the ring buffer, let alone pass that on to log files.

To create this, I ran the following script, appending the output to the file dmesg.log:

#!/bin/bash
while true; do
        dmesg -c
done

sudo ./dmesg-monitor >> dmesg.log