From a71c64512ad885e326cd4d9782fc8397115b3063 Mon Sep 17 00:00:00 2001
From: Diego Devesa <slarengh@gmail.com>
Date: Wed, 2 Apr 2025 14:52:01 +0200
Subject: [PATCH] llama : add option to override model tensor buffers
 (llama/11397)

* llama : add option to override tensor buffers

* ggml : fix possible underflow in ggml_nbytes
---
 ggml/src/ggml.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/ggml/src/ggml.c b/ggml/src/ggml.c
index 161dd3fa..3e274d6a 100644
--- a/ggml/src/ggml.c
+++ b/ggml/src/ggml.c
@@ -1159,6 +1159,12 @@ int64_t ggml_nrows(const struct ggml_tensor * tensor) {
 }
 
 size_t ggml_nbytes(const struct ggml_tensor * tensor) {
+    for (int i = 0; i < GGML_MAX_DIMS; ++i) {
+        if (tensor->ne[i] <= 0) {
+            return 0;
+        }
+    }
+
     size_t nbytes;
     const size_t blck_size = ggml_blck_size(tensor->type);
     if (blck_size == 1) {