diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
index 3938f7b8ec4b..12fbff02e4b5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
@@ -1043,7 +1043,11 @@ amdgpu_userq_vm_validate_and_restore_queue(struct amdgpu_userq_mgr *uq_mgr)
 retry_lock:
 	drm_exec_init(&exec, DRM_EXEC_IGNORE_DUPLICATES, 0);
 	drm_exec_until_all_locked(&exec) {
-		ret = amdgpu_vm_lock_pd(vm, &exec, 1);
+		/*
+		 * Rearm adds one BOOKKEEP fence and validation may queue move fences
+		 * on the root PD BO, so reserve caller-side slots accordingly.
+		 */
+		ret = amdgpu_vm_lock_pd(vm, &exec, TTM_NUM_MOVE_FENCES + 1);
 		drm_exec_retry_on_contention(&exec);
 		if (unlikely(ret))
 			goto unlock_all;