drm/radeon: reset BOs address after clearing it.

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

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index 16d8e95abd94..cabcb0aafe03 100644
--- 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_device *rdev,
                         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);