From: Lucas Stach Date: Tue, 6 Jun 2017 07:17:06 +0000 (+0200) Subject: drm/etnaviv: don't trigger OOM killer when page allocation fails X-Git-Tag: v4.14-rc1~179^2~21^2~6 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=6cbf04001ec0eede72a43f297c93586971445128;p=linux.git drm/etnaviv: don't trigger OOM killer when page allocation fails 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 --- diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c index 9a3bea738330..b7541a455451 100644 --- 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_gem_new(struct drm_device *dev, * 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)