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Re: general protection - kernel & programs



> The only way a normal process can access the kernel is through
> the system-call interface which traps into kernel mode. Any
> failure on the part of the kernel to check correct parameters to
> system-calls (not library functions) is KERNEL BUG.

Well, strictly speaking you can open /dev/kmem, for example, and possibly
mess with it... Direct harware access can also bring much fun. It has to
be a really weird bug to do so non-intentionally, though.

> 
> I stronly stands behind the postulate (stated by Evgeny):
>         Kernel panic in normal OS (Unix/Linux etc.) is caused
>         ONLY by hardware malfunction OR kernel bugs.
> 

Or by user kicking the box ;))
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