Re: [PATCH AUTOSEL 6.1 10/12] enic: Avoid false positive under FORTIFY_SOURCE

[Sasha Levin]

On Mon, Mar 11, 2024 at 10:03:35PM +0100, Pavel Machek wrote:
> Hi!
>
> > From: Kees Cook <keescook@xxxxxxxxxxxx>
> >
> > [ Upstream commit 40b9385dd8e6a0515e1c9cd06a277483556b7286 ]
> >
> > FORTIFY_SOURCE has been ignoring 0-sized destinations while the kernel
> > code base has been converted to flexible arrays. In order to enforce
> > the 0-sized destinations (e.g. with __counted_by), the remaining 0-sized
> > destinations need to be handled. Unfortunately, struct vic_provinfo
> > resists full conversion, as it contains a flexible array of flexible
> > arrays, which is only possible with the 0-sized fake flexible array.
> >
> > Use unsafe_memcpy() to avoid future false positives under
> > CONFIG_FORTIFY_SOURCE.
>
> This prepares for future chagnes, but I don't believe we'll port them
> to stable.

Dropped, thanks.

--
Thanks,
Sasha