Patch "drm/radeon: reset BOs address after clearing it." has been added to the 4.0-stable tree

Patch "drm/radeon: reset BOs address after clearing it." has been added to the 4.0-stable tree

[gregkh]

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

    drm/radeon: reset BOs address after clearing it.

to the 4.0-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-radeon-reset-bos-address-after-clearing-it.patch
and it can be found in the queue-4.0 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 48afbd70ac7b6aa62e8d452091023941d8085f8a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Mon, 27 Apr 2015 17:04:35 +0200
Subject: drm/radeon: reset BOs address after clearing it.
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From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>

commit 48afbd70ac7b6aa62e8d452091023941d8085f8a upstream.

Otherwise it is possible that we will have page table corruption
if we change a BOs address multiple times.

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

---
 drivers/gpu/drm/radeon/radeon_vm.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -490,6 +490,8 @@ int radeon_vm_bo_set_addr(struct radeon_
 			spin_lock(&vm->status_lock);
 			list_add(&tmp->vm_status, &vm->freed);
 			spin_unlock(&vm->status_lock);
+
+			bo_va->addr = 0;
 		}
 
 		interval_tree_remove(&bo_va->it, &vm->va);


Patches currently in stable-queue which might be from christian.koenig@amd.com are

queue-4.0/drm-radeon-fix-lockup-when-bos-aren-t-part-of-the-vm-on-release.patch
queue-4.0/drm-radeon-reset-bos-address-after-clearing-it.patch
queue-4.0/drm-radeon-check-new-address-before-removing-old-one.patch
queue-4.0/drm-radeon-use-drm_calloc_ab-for-cs-relocs.patch