don't forget to fill in canary bytes for posix_memalign(3); reported by

and ok jeremy@

diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c
index 5b92b56..4e5176f 100644 (file)
--- a/lib/libc/stdlib/malloc.c
+++ b/lib/libc/stdlib/malloc.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: malloc.c,v 1.222 2017/04/17 16:36:35 otto Exp $       */
+/*     $OpenBSD: malloc.c,v 1.223 2017/04/18 15:46:44 otto Exp $       */
 /*
  * Copyright (c) 2008, 2010, 2011, 2016 Otto Moerbeek <otto@drijf.net>
  * Copyright (c) 2012 Matthew Dempsky <matthew@openbsd.org>
@@ -2018,6 +2018,9 @@ omemalign(struct dir_info *pool, size_t alignment, size_t sz, int zero_fill, voi
                else
                        memset(p, SOME_JUNK, psz - mopts.malloc_guard);
        }
+       else if (mopts.chunk_canaries)
+               fill_canary(p, sz - mopts.malloc_guard,
+                   psz - mopts.malloc_guard);
 
        return p;
 }