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Date: Fri, 26 May 2017 13:17:09 -0700
From: Kees Cook <keescook@...omium.org>
To: kernel-hardening@...ts.openwall.com
Cc: Kees Cook <keescook@...omium.org>,
Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
James Morris <james.l.morris@...cle.com>,
Laura Abbott <labbott@...hat.com>,
x86@...nel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v2 05/20] randstruct: Whitelist struct security_hook_heads cast
The LSM initialization routines walk security_hook_heads as an array
of struct list_head instead of via names to avoid a ton of needless
source. Whitelist this to avoid the false positive warning from the
plugin:
security/security.c: In function ‘security_init’:
security/security.c:59:20: note: found mismatched op0 struct pointer types: ‘struct list_head’ and ‘struct security_hook_heads’
struct list_head *list = (struct list_head *) &security_hook_heads;
^
Cc: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Cc: James Morris <james.l.morris@...cle.com>
Signed-off-by: Kees Cook <keescook@...omium.org>
---
scripts/gcc-plugins/randomize_layout_plugin.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/scripts/gcc-plugins/randomize_layout_plugin.c b/scripts/gcc-plugins/randomize_layout_plugin.c
index bccbec2af0e4..e126ac7874af 100644
--- a/scripts/gcc-plugins/randomize_layout_plugin.c
+++ b/scripts/gcc-plugins/randomize_layout_plugin.c
@@ -43,6 +43,8 @@ struct whitelist_entry {
};
static const struct whitelist_entry whitelist[] = {
+ /* walk struct security_hook_heads as an array of struct list_head */
+ { "security/security.c", "list_head", "security_hook_heads" },
{ }
};
--
2.7.4
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