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Re: NULL deref.
On 01/06/07, ninjaboy <n0b0dyn1nj4@xxxxxxxxx> wrote:
hi,
why kernel can't handle NULL deref?
the common error is:
Unable to handle kernel NULL pointer dereference at virtual address 000000XX
How would you propose to handle a NULL pointer dereference?
If a pointer is NULL and you dereference it, where would you like to
end up? The problem is, you don't know, the pointer doesn't point to
anything... A NULL deref is a bug, should never happen - when it does
happen it's because either the programmer messed up and did something
bad or there was some memory corruption that corrupted a pointer from
some other part of the code - in either case you are screwed, there's
no sane way to handle the situation.
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Jesper Juhl <jesper.juhl@xxxxxxxxx>
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