Re: [PATCH] bttv: correct bttv_risc_packed buffer size

[Duncan Sands <duncan.sands@math.u-psud.fr>]

Hi Bodo,

> > This patch fixes the strange crashes I was seeing after using
> > my bttv card to watch television.  They were caused by a
> > buffer overflow in bttv_risc_packed.
> 
> <snip>
> 
> Would these errors e.g. cause a corruption of exactly four bytes at the start
> of random pages?

I don't think so.  It should cause either no corruption or at least 8 bytes worth
(it does pairs of 4 byte writes).  What you might see is an Oops when it tries to
write the first 4 bytes at the start of a page, because of a page fault, but then
the write doesn't happen and there is no corruption...

Best wishes,

Duncan.
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