From Fedora Project Wiki

The page said, "However, manual testing can be achieved by starting X and then echo 1 > /proc/sys/kernel/panic as root." However, that's not true. [1] says, "/proc/sys/kernel/panic
This represents the amount of time (in seconds) the kernel will wait before rebooting if it reaches a "kernel panic." A setting of zero (0) seconds will disable rebooting on kernel panic.

Default setting: 0". So echoing 1 will cause the system to reboot one second after panic (should one occur), rather than never reboot after panic. It will not trigger an immediate panic, and in fact will be counter-productive should a panic later occur. I don't know how to actually trigger an immediate panic. However, I removed this because it's incorrect. Mattflaschen 07:42, 22 February 2009 (UTC)