I am running kernel 3.14.4 on Fedora 18.
I am experimenting with a kernel module I am making.
The module has a bug (at least one) and crashes the kernel.
Sometimes I see a stack trace on my frozen screen (if I am lucky) by tailing
the kernel log (tail -f /var/log/messages
).
From what I see, it's a NULL pointer dereference.
Since luck does not provide for productivity I configured kdump,
enabled it on boot, and tested that in fact it does create a kernel
dump upon a sample panic (echo c > /proc/sysrq-trigger
), which I can see after it reboots through the crash utility.
But when I test my module the kernel crashes and no dump is generated.
What can I do better?