Messages in this thread | | | Date | Wed, 15 Jul 2020 19:41:41 -0700 | From | Kees Cook <> | Subject | Re: [RFC 0/3] kunit: add support to use modules |
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On Wed, Jul 15, 2020 at 11:47:11AM +0800, David Gow wrote: > - The inheriting of the mm stuff still means that > copy_{from,to}_user() will only work if loaded as a module. This > really needs to be documented. (Ideally, we'd find a way of having > this work even for built-in tests, but I don't have any real ideas as > to how that could be done).
I'd like to better understand this ... are there conditions where vm_mmap() doesn't work? I thought this would either use current() (e.g. how LKDTM uses it when getting triggered from debugfs), or use init_mm.
I'd really like to see the mm patch more well described/justified.
-- Kees Cook
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