]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
mm: remove HARDENED_USERCOPY_FALLBACK
authorStephen Kitt <steve@sk2.org>
Fri, 5 Nov 2021 20:45:18 +0000 (13:45 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 6 Nov 2021 20:30:43 +0000 (13:30 -0700)
commit53944f171a89dff4e2a3d76f42e6eedb551bb861
tree2d720c303bb58dab484b7bc778d1f94ec1828d43
parent755804d16965888bb069a4cd39005b97ba9e11fd
mm: remove HARDENED_USERCOPY_FALLBACK

This has served its purpose and is no longer used.  All usercopy
violations appear to have been handled by now, any remaining instances
(or new bugs) will cause copies to be rejected.

This isn't a direct revert of commit 2d891fbc3bb6 ("usercopy: Allow
strict enforcement of whitelists"); since usercopy_fallback is
effectively 0, the fallback handling is removed too.

This also removes the usercopy_fallback module parameter on slab_common.

Link: https://github.com/KSPP/linux/issues/153
Link: https://lkml.kernel.org/r/20210921061149.1091163-1-steve@sk2.org
Signed-off-by: Stephen Kitt <steve@sk2.org>
Suggested-by: Kees Cook <keescook@chromium.org>
Acked-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Joel Stanley <joel@jms.id.au> [defconfig change]
Acked-by: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E . Hallyn" <serge@hallyn.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/powerpc/configs/skiroot_defconfig
include/linux/slab.h
mm/slab.c
mm/slab_common.c
mm/slub.c
security/Kconfig