Use a tighter sanity check of 16gb max mmap and ensure this lines up …

…with comment
PLSysSec · Apr 9, 2024 · 7c9b7f4 · 7c9b7f4
1 parent c0d2ba2
commit 7c9b7f4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/wasm2c_rt_mem.c b/src/wasm2c_rt_mem.c
@@ -328,8 +328,8 @@ static void* os_mmap(void* hint, size_t size, int prot, int flags)
     /* integer overflow */
     return NULL;
 
-  if (request_size > 16 * (uint64_t)UINT32_MAX)
-    /* At most 16 G is allowed */
+  if (request_size > 4 * (uint64_t)UINT32_MAX)
+    /* Sanity check: At most 16 G is allowed */
     return NULL;
 
   if (prot & MMAP_PROT_READ)