From: Rob Clark <robdclark@gmail.com>
Date: Wed, 1 Jun 2016 18:02:51 +0000 (-0400)
Subject: drm/msm: fix potential submit error path issue
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a9e26cab40ecfd4a0d718f22fa30db4dd1edbf60;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

drm/msm: fix potential submit error path issue

Signed-off-by: Rob Clark <robdclark@gmail.com>
---

diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c
index 635eff17c3d1..eb4bb8b2f3a5 100644
--- a/drivers/gpu/drm/msm/msm_gem_submit.c
+++ b/drivers/gpu/drm/msm/msm_gem_submit.c
@@ -77,6 +77,11 @@ static int submit_lookup_objects(struct msm_gem_submit *submit,
 		void __user *userptr =
 			u64_to_user_ptr(args->bos + (i * sizeof(submit_bo)));
 
+		/* make sure we don't have garbage flags, in case we hit
+		 * error path before flags is initialized:
+		 */
+		submit->bos[i].flags = 0;
+
 		ret = copy_from_user(&submit_bo, userptr, sizeof(submit_bo));
 		if (ret) {
 			ret = -EFAULT;