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

[Pavel Machek]

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.

Best regards,
								Pavel
-- 
People of Russia, stop Putin before his war on Ukraine escalates.

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