Patch "drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()" has been added to the 4.9-stable tree

Patch "drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()" has been added to the 4.9-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()

to the 4.9-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amdgpu-potential-uninitialized-variable-in-amdgpu_vm_update_directories.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 78aa02c713fcf19e9bc8511ab61a5fd6c877cc01 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Sat, 30 Sep 2017 11:14:13 +0300
Subject: drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Dan Carpenter <dan.carpenter@oracle.com>

commit 78aa02c713fcf19e9bc8511ab61a5fd6c877cc01 upstream.

After commit ea09729c9302 ("drm/amdgpu: rework page directory filling
v2") then it becomes a lot harder to verify that "r" is initialized.  My
static checker complains and so I've reviewed the code.  It does look
like it might be buggy... Anyway, it doesn't hurt to set "r" to zero
at the start.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -744,7 +744,7 @@ error_free:
 int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
                                    struct amdgpu_vm *vm)
 {
-	int r;
+	int r = 0;
 
 	r = amdgpu_vm_update_pd_or_shadow(adev, vm, true);
 	if (r)


Patches currently in stable-queue which might be from dan.carpenter@oracle.com are

queue-4.9/drm-amdgpu-potential-uninitialized-variable-in-amdgpu_vce_ring_parse_cs.patch
queue-4.9/drm-amdgpu-potential-uninitialized-variable-in-amdgpu_vm_update_directories.patch