From cdb81d4ea16ff80a03dd3fc51a01b97b584275e3 Mon Sep 17 00:00:00 2001
From: Georgi Gerganov <ggerganov@gmail.com>
Date: Sun, 7 Jan 2024 12:20:04 +0200
Subject: [PATCH] ggml : fix null backend dereference

---
 ggml-cuda.cu | 2 +-
 ggml-metal.m | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/ggml-cuda.cu b/ggml-cuda.cu
index 032d7e986..ee82f68d7 100644
--- a/ggml-cuda.cu
+++ b/ggml-cuda.cu
@@ -10140,7 +10140,7 @@ ggml_backend_t ggml_backend_cuda_init(int device) {
 }
 
 bool ggml_backend_is_cuda(ggml_backend_t backend) {
-    return backend->iface.get_name == ggml_backend_cuda_name;
+    return backend && backend->iface.get_name == ggml_backend_cuda_name;
 }
 
 int ggml_backend_cuda_get_device_count() {
diff --git a/ggml-metal.m b/ggml-metal.m
index e3d76b9d3..00b377a3e 100644
--- a/ggml-metal.m
+++ b/ggml-metal.m
@@ -2749,7 +2749,7 @@ ggml_backend_t ggml_backend_metal_init(void) {
 }
 
 bool ggml_backend_is_metal(ggml_backend_t backend) {
-    return backend->iface.get_name == ggml_backend_metal_name;
+    return backend && backend->iface.get_name == ggml_backend_metal_name;
 }
 
 void ggml_backend_metal_set_n_cb(ggml_backend_t backend, int n_cb) {