diff --git a/drivers/gpu/nvgpu/common/gr/fecs_trace.c b/drivers/gpu/nvgpu/common/gr/fecs_trace.c
index 5f99c16bc..365b107ae 100644
--- a/drivers/gpu/nvgpu/common/gr/fecs_trace.c
+++ b/drivers/gpu/nvgpu/common/gr/fecs_trace.c
@@ -516,7 +516,11 @@ int nvgpu_gr_fecs_trace_poll(struct gk20a *g)
 		read, g->ops.gr.fecs_trace.get_read_index(g), write, cnt);
 
 	/* Ensure all FECS writes have made it to SYSMEM */
-	g->ops.mm.cache.fb_flush(g);
+	err = g->ops.mm.cache.fb_flush(g);
+	if (err != 0) {
+		nvgpu_err(g, "mm.cache.fb_flush() failed err=%d", err);
+		goto done;
+	}
 
 	if (nvgpu_is_enabled(g, NVGPU_FECS_TRACE_FEATURE_CONTROL)) {
 		/* Bits 30:0 of MAILBOX1 represents actual read pointer value */
diff --git a/drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c b/drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
index ed82bdebb..b2b01d7a6 100644
--- a/drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
+++ b/drivers/gpu/nvgpu/os/linux/ioctl_ctrl.c
@@ -656,7 +656,11 @@ static int nvgpu_gpu_ioctl_l2_fb_ops(struct gk20a *g,
 	}
 
 	if (args->fb_flush) {
-		g->ops.mm.cache.fb_flush(g);
+		err = g->ops.mm.cache.fb_flush(g);
+		if (err != 0) {
+			nvgpu_err(g, "mm.cache.fb_flush() failed err=%d", err);
+			return err;
+		}
 	}
 
 	return err;