Merge tag 'usercopy-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull usercopy protection from Kees Cook:
 "Tbhis implements HARDENED_USERCOPY verification of copy_to_user and
  copy_from_user bounds checking for most architectures on SLAB and
  SLUB"

* tag 'usercopy-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  mm: SLUB hardened usercopy support
  mm: SLAB hardened usercopy support
  s390/uaccess: Enable hardened usercopy
  sparc/uaccess: Enable hardened usercopy
  powerpc/uaccess: Enable hardened usercopy
  ia64/uaccess: Enable hardened usercopy
  arm64/uaccess: Enable hardened usercopy
  ARM: uaccess: Enable hardened usercopy
  x86/uaccess: Enable hardened usercopy
  mm: Hardened usercopy
  mm: Implement stack frame object validation
  mm: Add is_migrate_cma_page

1 files changed, 2 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 69886493ff1e..cac3f096050d 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1761,6 +1761,7 @@ choice
 
 config SLAB
         bool "SLAB"
+        select HAVE_HARDENED_USERCOPY_ALLOCATOR
         help
           The regular slab allocator that is established and known to work
           well in all environments. It organizes cache hot objects in
@@ -1768,6 +1769,7 @@ config SLAB
 
 config SLUB
         bool "SLUB (Unqueued Allocator)"
+        select HAVE_HARDENED_USERCOPY_ALLOCATOR
         help
            SLUB is a slab allocator that minimizes cache line usage
            instead of managing queues of cached objects (SLAB approach).