From 52918795ad2c646d70d93106798724e0d6e1fac2 Mon Sep 17 00:00:00 2001
From: otto <otto@openbsd.org>
Date: Mon, 19 Apr 2021 06:43:15 +0000
Subject: [PATCH] Same internal consistency check as libc malloc: size in hash
 table should correspond to size of chunk meta data

---
 libexec/ld.so/malloc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libexec/ld.so/malloc.c b/libexec/ld.so/malloc.c
index 3dba1283fd2..c5eae02e8f6 100644
--- a/libexec/ld.so/malloc.c
+++ b/libexec/ld.so/malloc.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: malloc.c,v 1.31 2020/12/26 13:17:33 otto Exp $       */
+/*      $OpenBSD: malloc.c,v 1.32 2021/04/19 06:43:15 otto Exp $       */
 /*
  * Copyright (c) 2008, 2010, 2011 Otto Moerbeek <otto@drijf.net>
  * Copyright (c) 2012 Matthew Dempsky <matthew@openbsd.org>
@@ -950,7 +950,10 @@ ofree(void *p)
 	} else {
 		void *tmp;
 		int i;
+		struct chunk_info *info = (struct chunk_info *)r->size;
 
+		if (info->size != sz)
+			wrterror("internal struct corrupt");
 		find_chunknum(g_pool, r, p, CHUNK_CANARIES);
 		for (i = 0; i <= MALLOC_DELAYED_CHUNK_MASK; i++) {
 			if (p == g_pool->delayed_chunks[i])
-- 
2.20.1