From: slaren <redacted>
Date: Fri, 8 Sep 2023 02:04:56 +0000 (+0200)
Subject: ggml-alloc : correctly check mmap return value for errors (#3075)
X-Git-Tag: gguf-v0.4.0~108
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=ebc96086af49fe70108cafcea6ab4bebd658a41a;p=pkg%2Fggml%2Fsources%2Fllama.cpp

ggml-alloc : correctly check mmap return value for errors (#3075)
---

diff --git a/ggml-alloc.c b/ggml-alloc.c
index a896601d..e2ac891d 100644
--- a/ggml-alloc.c
+++ b/ggml-alloc.c
@@ -316,7 +316,11 @@ static void * alloc_vmem(size_t size) {
 #if defined(_WIN32)
     return VirtualAlloc(NULL, size, MEM_RESERVE, PAGE_NOACCESS);
 #elif defined(_POSIX_MAPPED_FILES)
-    return mmap(NULL, size, PROT_NONE, MAP_PRIVATE | MAP_ANON, -1, 0);
+    void * ptr = mmap(NULL, size, PROT_NONE, MAP_PRIVATE | MAP_ANON, -1, 0);
+    if (ptr == MAP_FAILED) {
+        return NULL;
+    }
+    return ptr;
 #else
     // use a fixed address for other platforms
     uintptr_t base_addr = (uintptr_t)-size - 0x100;