[PATCH 1/2] arm64: uaccess: Clean up types for access_ok()

Catalin Marinas catalin.marinas at arm.com
Fri Feb 16 10:28:14 PST 2018

On Fri, Feb 16, 2018 at 05:04:22PM +0000, Robin Murphy wrote:
> In converting __range_ok() into a static inline, I inadvertently made
> it more type-safe, but without considering the ordering of the relevant
> conversions. This leads to quite a lot of Sparse noise about the fact
> that we use __chk_user_ptr() after addr has already been converted from
> a user pointer to an unsigned long.
> Tweak the prototype and locals so the types all make logical sense and
> Sparse is happy (although the resulting codegen remains identical). The
> only external site this affects is in compat syscalls where the inferred
> "user-pointer-ness" of a register value now warrants an explicit cast.
> Signed-off-by: Robin Murphy <robin.murphy at arm.com>

Both applied. Thanks.


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