diff options
| author |   otto <otto@openbsd.org> | 2011-07-12 14:43:42 +0000 |
|---|---|---|
| committer | otto <otto@openbsd.org> | 2011-07-12 14:43:42 +0000 |
| commit | 0d055aeea4929ba608aaf10f5b168c15c3f68d49 (patch) | |
| tree | 8adfb2c894256c2b1db983e7e433bc3e4c075632 /lib/libc/stdlib/malloc.c | |
| parent | Allow syslogc -n XX to display less than the whole file, and -n XX -f to (diff) | |
| download | wireguard-openbsd-0d055aeea4929ba608aaf10f5b168c15c3f68d49.tar.xz wireguard-openbsd-0d055aeea4929ba608aaf10f5b168c15c3f68d49.zip | |
on malloc flag S, set cache size to 0; will catch even more
use-after-free bugs; ok krw@ dlg@ pirofti@
Diffstat (limited to 'lib/libc/stdlib/malloc.c')
| -rw-r--r-- | lib/libc/stdlib/malloc.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c index 976880e757b..9682f91cda0 100644 --- a/lib/libc/stdlib/malloc.c +++ b/lib/libc/stdlib/malloc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: malloc.c,v 1.138 2011/06/20 18:04:06 tedu Exp $ */ +/* $OpenBSD: malloc.c,v 1.139 2011/07/12 14:43:42 otto Exp $ */ /* * Copyright (c) 2008 Otto Moerbeek <otto@drijf.net> * @@ -68,6 +68,8 @@ #define MALLOC_MAXCACHE 256 #define MALLOC_DELAYED_CHUNKS 15 /* max of getrnibble() */ #define MALLOC_INITIAL_REGIONS 512 +#define MALLOC_DEFAULT_CACHE 64 + /* * When the P option is active, we move allocations between half a page * and a whole page towards the end, subject to alignment constraints. @@ -461,7 +463,7 @@ omalloc_init(struct dir_info **dp) */ mopts.malloc_abort = 1; mopts.malloc_move = 1; - mopts.malloc_cache = 64; + mopts.malloc_cache = MALLOC_DEFAULT_CACHE; for (i = 0; i < 3; i++) { switch (i) { @@ -551,10 +553,12 @@ omalloc_init(struct dir_info **dp) case 's': mopts.malloc_freeprot = mopts.malloc_junk = 0; mopts.malloc_guard = 0; + mopts.malloc_cache = MALLOC_DEFAULT_CACHE; break; case 'S': mopts.malloc_freeprot = mopts.malloc_junk = 1; mopts.malloc_guard = MALLOC_PAGESIZE; + mopts.malloc_cache = 0; break; case 'x': mopts.malloc_xmalloc = 0; |