[PATCH v7 13/14] drm/amdgpu: validate the queue va for resuming the queue

[Prike Liang]

It requires validating the userq VA whether is mapped before
trying to resume the queue.

Signed-off-by: Prike Liang <Prike.Liang at amd.com>
Reviewed-by: Christian König <christian.koenig at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
index a41aaf4aaf4b..77a2f12c8dcc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_userq.c
@@ -814,11 +814,18 @@ static int
 amdgpu_userq_restore_all(struct amdgpu_userq_mgr *uq_mgr)
 {
 	struct amdgpu_usermode_queue *queue;
+	struct amdgpu_fpriv *fpriv = uq_mgr_to_fpriv(uq_mgr);
 	int queue_id;
 	int ret = 0, r;
 
 	/* Resume all the queues for this process */
 	idr_for_each_entry(&uq_mgr->userq_idr, queue, queue_id) {
+
+		if (!amdgpu_userq_buffer_vas_mapped(&fpriv->vm, queue)) {
+			drm_file_err(uq_mgr->file, "trying restore queue without va mappping\n");
+			continue;
+		}
+
 		r = amdgpu_userq_map_helper(uq_mgr, queue);
 		if (r)
 			ret = r;
-- 
2.34.1