Re: [PATCH 12/26] netfilter: switch nf_setsockopt to sockptr_t

Christoph Hellwig <[email protected]>
Newsgroups org.kernel.vger.dccp,com.openwall.lists.kernel-hardening,dev.linux.lists.bridge,dev.linux.lists.mptcp,org.kernel.vger.bpf,org.kernel.vger.linux-bluetooth,org.kernel.vger.linux-can,org.kernel.vger.linux-crypto,org.kernel.vger.linux-hams,org.kernel.vger.linux-kernel,org.kernel.vger.linux-s390,org.kernel.vger.linux-sctp,org.kernel.vger.linux-wpan,org.kernel.vger.linux-x25,org.kernel.vger.lvs-devel,org.kernel.vger.netdev,org.kernel.vger.netfilter-devel
Message-ID <[email protected]> 
On Mon, Jul 27, 2020 at 06:16:32PM +0200, Jason A. Donenfeld wrote:
> Maybe sockptr_advance should have some safety checks and sometimes
> return -EFAULT? Or you should always use the implementation where
> being a kernel address is an explicit bit of sockptr_t, rather than
> being implicit?

I already have a patch to use access_ok to check the whole range in
init_user_sockptr.
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