Random reboot question

Bernardo Innocenti bernie at codewiz.org
Wed Oct 17 23:25:18 EDT 2007


John Watlington wrote:

> Is it in any way likely that memory errors could lead an x86 system  
> to reboot ?

The MCE exception, maybe?  Linux supports it, but instead of rebooting
it should just prints a nice (*) diagnostic message.

(*) your definition of niceness may of course vary :-)


Are you seeing gratuitous reboots?

I'm not sure about the x86, but on the m68k you could reboot
spontaneously due to the infamous "double bus error" condition.
It happens when the bus asserts a BERR and, while the CPU is
fetching the exception vector or the first instruction of the
handler routine, it gets a second bus error.

-- 
 \___/
 |___|   Bernardo Innocenti - http://www.codewiz.org/
  \___\  One Laptop Per Child - http://www.laptop.org/



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