diff --git a/drivers/gpu/nvgpu/libnvgpu-drv_safe.export b/drivers/gpu/nvgpu/libnvgpu-drv_safe.export
index 2e704d41e..3d594b319 100644
--- a/drivers/gpu/nvgpu/libnvgpu-drv_safe.export
+++ b/drivers/gpu/nvgpu/libnvgpu-drv_safe.export
@@ -661,6 +661,7 @@ nvgpu_queue_in
 nvgpu_queue_in_locked
 nvgpu_queue_out
 nvgpu_queue_out_locked
+nvgpu_queue_out_get_fault_injection
 nvgpu_preempt_channel
 nvgpu_preempt_get_timeout
 nvgpu_preempt_poll_tsg_on_pbdma
diff --git a/userspace/units/posix/queue/posix-queue.c b/userspace/units/posix/queue/posix-queue.c
index effcdccfa..ddf72ecf4 100644
--- a/userspace/units/posix/queue/posix-queue.c
+++ b/userspace/units/posix/queue/posix-queue.c
@@ -185,6 +185,8 @@ int test_nvgpu_queue_out(struct unit_module *m, struct gk20a *g, void *args)
 	struct nvgpu_queue q = {0};
 	struct nvgpu_mutex lock;
 	char buf[BUF_LEN];
+	struct nvgpu_posix_fault_inj *queue_out_fi =
+				nvgpu_queue_out_get_fault_injection();
 
 	nvgpu_mutex_init(&lock);
 
@@ -250,6 +252,20 @@ int test_nvgpu_queue_out(struct unit_module *m, struct gk20a *g, void *args)
 		goto fail;
 	}
 
+	/*
+	 * Fault injection so that immediate call to nvgpu_queue_out_locked()
+	 * API would return error.
+	 */
+	nvgpu_posix_enable_fault_injection(queue_out_fi, true, 0);
+	ret = nvgpu_queue_out_locked(&q, buf, BUF_LEN, &lock);
+	if (ret != -1) {
+		err = UNIT_FAIL;
+		nvgpu_posix_enable_fault_injection(queue_out_fi, false, 0);
+		unit_err(m, "%d. queue_out failed err=%d\n", __LINE__,  ret);
+		goto fail;
+	}
+	nvgpu_posix_enable_fault_injection(queue_out_fi, false, 0);
+
 fail:
 	if (q.data != NULL)
 		free(q.data);
diff --git a/userspace/units/posix/queue/posix-queue.h b/userspace/units/posix/queue/posix-queue.h
index 6c0d7de96..109f4ae83 100644
--- a/userspace/units/posix/queue/posix-queue.h
+++ b/userspace/units/posix/queue/posix-queue.h
@@ -137,6 +137,10 @@ int test_nvgpu_queue_in(struct unit_module *m, struct gk20a *g, void *args);
  * - Update "in" and "out" indexes and dequeue message of length BUF_LEN such
  *   that we wrap around the Queue while dequeuing the message using
  *   nvgpu_queue_out() API. Check that the API returns "BUF_LEN".
+ * - Do fault injection so that immediate call to nvgpu_queue_out_locked() API
+ *   would return error.
+ * - Invoke nvgpu_queue_out_locked() API and check that API returns -1 error.
+ * - Remove the injected fault.
  * - Uninitialize the allocated resources.
  *
  * Output: Returns PASS if the steps above were executed successfully. FAIL