| Message ID | 1495829844-69341-8-git-send-email-keescook@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/scripts/gcc-plugins/randomize_layout_plugin.c b/scripts/gcc-plugins/randomize_layout_plugin.c index bf110915a5aa..5f4e59a78eeb 100644 --- a/scripts/gcc-plugins/randomize_layout_plugin.c +++ b/scripts/gcc-plugins/randomize_layout_plugin.c @@ -45,6 +45,8 @@ struct whitelist_entry { static const struct whitelist_entry whitelist[] = { /* unix_skb_parms via UNIXCB() buffer */ { "net/unix/af_unix.c", "unix_skb_parms", "char" }, + /* big_key payload.data struct splashing */ + { "security/keys/big_key.c", "path", "void *" }, /* walk struct security_hook_heads as an array of struct list_head */ { "security/security.c", "list_head", "security_hook_heads" }, { }
The big_key payload structure intentionally stores a struct path in two void pointers to avoid header soup. Whitelist this case: security/keys/big_key.c: In function ‘big_key_read’: security/keys/big_key.c:293:16: note: found mismatched rhs struct pointer types: ‘struct path’ and ‘void *’ struct path *path = (struct path *)&key->payload.data[big_key_path]; ^~~~ Cc: David Howells <dhowells@redhat.com> Signed-off-by: Kees Cook <keescook@chromium.org> --- scripts/gcc-plugins/randomize_layout_plugin.c | 2 ++ 1 file changed, 2 insertions(+)