util-buffer: expand by multiples of 4k

OISF · Nov 28, 2024 · 287d836 · 287d836
1 parent 2e2eaac
commit 287d836
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/util-buffer.c b/src/util-buffer.c
@@ -65,6 +65,11 @@ int MemBufferExpand(MemBuffer **buffer, uint32_t expand_by) {
         return -1;
     }
 
+    /* Adjust expand_by to next multiple of 4k. */
+    if (expand_by % 4096 != 0) {
+        expand_by = expand_by - (expand_by % 4096) + 4096;
+    }
+
     size_t total_size = (*buffer)->size + sizeof(MemBuffer) + expand_by;
 
     MemBuffer *tbuffer = SCRealloc(*buffer, total_size);