From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Fri, 17 Aug 2018 19:36:08 +0200
Subject: drm/amdgpu: fix incorrect use of fcheck
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Git-commit: bce31d4c1ae8865d6382e3a27b07b4bb8e020ade
Patch-mainline: v4.19-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

The usage isn't RCU protected.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
CC: stable@vger.kernel.org

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sched.c
@@ -53,7 +53,7 @@ static int amdgpu_sched_process_priority
 						  int fd,
 						  enum drm_sched_priority priority)
 {
-	struct file *filp = fcheck(fd);
+	struct file *filp = fget(fd);
 	struct drm_file *file;
 	struct pid *pid;
 	struct amdgpu_fpriv *fpriv;
@@ -78,6 +78,8 @@ static int amdgpu_sched_process_priority
 
 	put_pid(pid);
 
+	fput(filp);
+
 	return 0;
 }