| Date | Tue, 18 Aug 2020 12:34:21 -0700 | From | Kees Cook <> | Subject | Re: [PATCH 02/11] fs: don't allow kernel reads and writes without iter ops |
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On Mon, Aug 17, 2020 at 09:32:03AM +0200, Christoph Hellwig wrote: > Don't allow calling ->read or ->write with set_fs as a preparation for > killing off set_fs. All the instances that we use kernel_read/write on > are using the iter ops already. > > If a file has both the regular ->read/->write methods and the iter > variants those could have different semantics for messed up enough > drivers. Also fails the kernel access to them in that case. > > Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
-- Kees Cook
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