[PATCH] powerpc/kasan: fix parallele loading of modules.

[Michael Ellerman]

On Fri, 2019-08-09 at 14:58:09 UTC, Christophe Leroy wrote:
> Parallele loading of modules may lead to bad setup of shadow
> page table entries.
> 
> First, lets align modules so that two modules never share the same
> shadow page.
> 
> Second, ensure that two modules cannot allocate two page tables for
> the same PMD entry at the same time. This is done by using
> init_mm.page_table_lock in the same way as __pte_alloc_kernel()
> 
> Fixes: 2edb16efc899 ("powerpc/32: Add KASAN support")
> Cc: stable at vger.kernel.org
> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/45ff3c55958542c3b76075d59741297b8cb31cbb

cheers