[PATCH v3] powerpc/uaccess: evaluate macro arguments once, before user access is allowed

[Michael Ellerman]

On Tue, 7 Apr 2020 14:12:45 +1000, Nicholas Piggin wrote:
> get/put_user can be called with nontrivial arguments. fs/proc/page.c
> has a good example:
> 
>     if (put_user(stable_page_flags(ppage), out)) {
> 
> stable_page_flags is quite a lot of code, including spin locks in the
> page allocator.
> 
> [...]

Applied to powerpc/fixes.

[1/1] powerpc/uaccess: Evaluate macro arguments once, before user access is allowed
      https://git.kernel.org/powerpc/c/d02f6b7dab8228487268298ea1f21081c0b4b3eb

cheers