From: Lucas Stach <dev@lynxeye.de>
Date: Tue, 6 Jun 2017 09:17:06 +0200
Subject: drm/etnaviv: don't trigger OOM killer when page allocation fails
Git-commit: 6cbf04001ec0eede72a43f297c93586971445128
Patch-mainline: v4.14-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
GPU buffers can be quite large, so userspace is expected to deal with
allocation failure. Don't trigger the OOM killer when page allocation for
the GEM objects fails, as this opens an easy possiblity for unprivileged
applications to DOS the system,a s the shmem pages are not fully accounted
to the allocating process.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/etnaviv/etnaviv_gem.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c
@@ -662,7 +662,8 @@ static struct drm_gem_object *__etnaviv_
* going to pin these pages.
*/
mapping = obj->filp->f_mapping;
- mapping_set_gfp_mask(mapping, GFP_HIGHUSER);
+ mapping_set_gfp_mask(mapping, GFP_HIGHUSER |
+ __GFP_NORETRY | __GFP_NOWARN);
}
if (ret)