1. <operating system> What Unix
does when a critical internal consistency checks fails in such a way that Unix cannot continue.
attempts to print a short message on the console
and write an image of memory into the swap area on disk.
This can be analysed later using adb. The kernel will then either wait in a tight loop
until the machine is rebooted or will initiate an automatic reboot
Unix manual page
2. Action taken by software which discovers some fatal problem which prevents it from continuing to run.