drm/radeon: check if BO_VA is set before adding it to the invalidation list

Otherwise we try to clear BO_VAs without an address.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=91141

Signed-off-by: Christian König <christian.koenig@amd.com>
Test-by: hadack@gmx.de
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index 0310965..48d97c0 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -507,22 +507,21 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
                tmp->bo = radeon_bo_ref(bo_va->bo);
 
                interval_tree_remove(&bo_va->it, &vm->va);
+               spin_lock(&vm->status_lock);
                bo_va->it.start = 0;
                bo_va->it.last = 0;
-
-               spin_lock(&vm->status_lock);
                list_del_init(&bo_va->vm_status);
                list_add(&tmp->vm_status, &vm->freed);
                spin_unlock(&vm->status_lock);
        }
 
        if (soffset || eoffset) {
+               spin_lock(&vm->status_lock);
                bo_va->it.start = soffset;
                bo_va->it.last = eoffset - 1;
-               interval_tree_insert(&bo_va->it, &vm->va);
-               spin_lock(&vm->status_lock);
                list_add(&bo_va->vm_status, &vm->cleared);
                spin_unlock(&vm->status_lock);
+               interval_tree_insert(&bo_va->it, &vm->va);
        }
 
        bo_va->flags = flags;
@@ -1156,7 +1155,8 @@ void radeon_vm_bo_invalidate(struct radeon_device *rdev,
 
        list_for_each_entry(bo_va, &bo->va, bo_list) {
                spin_lock(&bo_va->vm->status_lock);
-               if (list_empty(&bo_va->vm_status))
+               if (list_empty(&bo_va->vm_status) &&
+                   (bo_va->it.start || bo_va->it.last))
                        list_add(&bo_va->vm_status, &bo_va->vm->invalidated);
                spin_unlock(&bo_va->vm->status_lock);
        }