Patch "drm/amdgpu: fix a vm_flush fence leak" has been added to the 4.8-stable tree

Patch "drm/amdgpu: fix a vm_flush fence leak" has been added to the 4.8-stable tree

[gregkh]

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

    drm/amdgpu: fix a vm_flush fence leak

to the 4.8-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-fix-a-vm_flush-fence-leak.patch
and it can be found in the queue-4.8 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 2d7c17be00e0dce3bc1a092a2c277a9f86c69ca9 Mon Sep 17 00:00:00 2001
From: Grazvydas Ignotas <notasas@gmail.com>
Date: Sun, 23 Oct 2016 21:31:45 +0300
Subject: drm/amdgpu: fix a vm_flush fence leak
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Grazvydas Ignotas <notasas@gmail.com>

commit 2d7c17be00e0dce3bc1a092a2c277a9f86c69ca9 upstream.

Looks like .last_flush reference is left at teardown.
Leak reported by CONFIG_SLUB_DEBUG.

Fixes: 41d9eb2c5a2a ("drm/amdgpu: add a fence after the VM flush")
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Grazvydas Ignotas <notasas@gmail.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 |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1654,5 +1654,6 @@ void amdgpu_vm_manager_fini(struct amdgp
 		fence_put(adev->vm_manager.ids[i].first);
 		amdgpu_sync_free(&adev->vm_manager.ids[i].active);
 		fence_put(id->flushed_updates);
+		fence_put(id->last_flush);
 	}
 }


Patches currently in stable-queue which might be from notasas@gmail.com are

queue-4.8/drm-amdgpu-fix-fence-slab-teardown.patch
queue-4.8/drm-amdgpu-fix-sched-fence-slab-teardown.patch
queue-4.8/drm-amd-fix-scheduler-fence-teardown-order-v2.patch
queue-4.8/drm-amdgpu-fix-a-vm_flush-fence-leak.patch