This panic.ko module will force a panic on Linux kernel.

If the kernel is compiled with CONFIG_KEXEC,
# echo c > /proc/sysrq-trigger
should force panic; try that first.
References: /usr/share/doc/kernel*/Documentation/sysrq.txt

Compile:
	make
Panic:
	insmod ./panic.ko

To automatically reboot after panic:
	sysctl -w kernel.panic=10	#10 seconds