Skip to contentSkip to conversation

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

PATCH [email protected] 1 participant 1 message Nov 17, 2016

Subsystems (3)
lore
Share & tools
lore

[email protected]

author maintainer Applied
#0 lore raw

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 <[email protected]> know about it.

Quoted 1 line

From 2d7c17be00e0dce3bc1a092a2c277a9f86c69ca9 Mon Sep 17 00:00:00 2001

From: Grazvydas Ignotas <[email protected]>
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 <[email protected]>

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")
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c |    1 +
 1 file changed, 1 insertion(+)
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +1 -0
@@ -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 [email protected] 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