how to hard hang the kernel from userspace?

[valdis.kletnieks at vt.edu]

On Thu, 07 Dec 2017 15:12:15 -0800, Daniel Walker said:

> So typically you have a process which updates the watchdog periodically
> which I call a petting process. As I said the purpose is to trigger the
> watchdog by starving the petting process (i.e. kick process) , then the
> watchdog reboots the system.

If you're doing the updating from userspace, a kill -9 will get the job done.

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