From: Lucas Stach <l.stach@pengutronix.de>
Date: Fri, 8 Sep 2017 14:24:32 +0000 (+0200)
Subject: etnaviv: fix submit error path
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5a642e6bc49f59922e19ebd639e74f72753fc77b;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

etnaviv: fix submit error path

If the gpu submit fails, bail out to avoid accessing a potentially
unititalized fence.

CC: stable@vger.kernel.org #4.12+
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---

diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
index 6463fc2c736f..b95362186f9c 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
@@ -445,8 +445,10 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
 	cmdbuf->user_size = ALIGN(args->stream_size, 8);
 
 	ret = etnaviv_gpu_submit(gpu, submit, cmdbuf);
-	if (ret == 0)
-		cmdbuf = NULL;
+	if (ret)
+		goto out;
+
+	cmdbuf = NULL;
 
 	if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) {
 		/*