hi,

> This normally isn't a problem, UNLESS you have some buggy code that 
> erroneously scribbles over the kernel text.  Then what would happen is 
> a write fault would occur, and since the kernel_map entry was a 
> read/write entry, the VM system proceeded to COW the pages, rather than 
> report the fault.

do you mean ZFOD?

YAMAMOTO Takashi