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Date: Fri, 25 Mar 2022 06:31:08 +0100 From: Christoph Hellwig <hch@....de> To: Kees Cook <keescook@...omium.org> Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org>, Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org Subject: Re: [PATCH] usercopy: Disable CONFIG_HARDENED_USERCOPY_PAGESPAN On Thu, Mar 24, 2022 at 04:02:55PM -0700, Kees Cook wrote: > CONFIG_HARDENED_USERCOPY_PAGESPAN has been mostly broken for a while, > and it has become hard to ignore with some recent scsi changes[1]. > While there is a more complete series to replace it with better checks[2], > it should have more soak time in -next. Instead, disable the config now, > with the expectation that it will be fully replaced in the next kernel > release. > > [1] https://lore.kernel.org/lkml/20220324064846.GA12961@lst.de/ > [2] https://lore.kernel.org/linux-hardening/20220110231530.665970-1-willy@infradead.org/ > > Suggested-by: Christoph Hellwig <hch@....de> > Cc: "Matthew Wilcox (Oracle)" <willy@...radead.org> > Signed-off-by: Kees Cook <keescook@...omium.org> I'd prefer to just remove the code, but this is better than nothing: Acked-by: Christoph Hellwig <hch@....de>
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