Re: [Re: Linux 2.6.26-rc2] Write protect on on
From: Linus Torvalds
Date: Mon May 19 2008 - 12:40:32 EST
On Mon, 19 May 2008, Boaz Harrosh wrote:
> Alan Stern wrote:
> >
> > Yes, it never worked properly. But now it fails in a bad way whereas
> > before it failed in a benign way.
>
> You do realize that, that was pure lock to have a zero'ed buffer.
Umm. Maybe it SHOULD NOT HAVE BEEN!
The thing is, if we can get partial results back, we really *should*
either error out, or we should have at least cleared the buffer (either
beforehand or when seeing the partial result). Returning a buffer with the
old random contents is a bug.
And if clearing the buffer not only avoids any security holes and possible
undefined behavior, but _also_ ends up fixing the write protect sense
issue, all the better!
Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/