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Date: Tue, 10 May 2022 00:27:53 -0700 From: Christoph Hellwig <hch@...radead.org> To: Kees Cook <keescook@...omium.org> Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>, "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Du Cheng <ducheng2@...il.com>, Christophe JAILLET <christophe.jaillet@...adoo.fr>, Vlastimil Babka <vbabka@...e.cz>, William Kucharski <william.kucharski@...cle.com>, Arnd Bergmann <arnd@...db.de>, Nathan Chancellor <nathan@...nel.org>, netdev@...r.kernel.org, linux-hardening@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] niu: Add "overloaded" struct page union member On Mon, May 09, 2022 at 03:23:33PM -0700, Kees Cook wrote: > The randstruct GCC plugin gets upset when it sees struct addresspace > (which is randomized) being assigned to a struct page (which is not > randomized): Well, the right fix here is to remove this abuse from the driver, not to legitimize it as part of a "driver" patch touching a core mm header that doesn't even cc the mm list.
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