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Message-Id: <1497905801-69164-4-git-send-email-keescook@chromium.org>
Date: Mon, 19 Jun 2017 13:56:40 -0700
From: Kees Cook <keescook@...omium.org>
To: kernel-hardening@...ts.openwall.com
Cc: Kees Cook <keescook@...omium.org>,
linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] randstruct: Disable randomization of ACPICA structs
Since the ACPICA source is maintained externally to the kernel, we can
neither switch it to designated initializers nor mark it
__no_randomize_layout. Until ACPICA-upstream changes[1] land to handle the
designated initialization, explicitly skip it in the plugin.
[1] https://github.com/acpica/acpica/pull/248
Signed-off-by: Kees Cook <keescook@...omium.org>
---
scripts/gcc-plugins/randomize_layout_plugin.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/scripts/gcc-plugins/randomize_layout_plugin.c b/scripts/gcc-plugins/randomize_layout_plugin.c
index f777ead58ba8..e6e02a40d522 100644
--- a/scripts/gcc-plugins/randomize_layout_plugin.c
+++ b/scripts/gcc-plugins/randomize_layout_plugin.c
@@ -346,6 +346,10 @@ static int relayout_struct(tree type)
!strcmp((const char *)ORIG_TYPE_NAME(type), "RAWPCIFACTORY"))
return 0;
+ /* Skip ACPICA structs until refreshed with designated_init. */
+ if (!strcmp((const char *)ORIG_TYPE_NAME(type), "acpi_sleep_functions"))
+ return 0;
+
/* throw out any structs in uapi */
xloc = expand_location(DECL_SOURCE_LOCATION(TYPE_FIELDS(type)));
--
2.7.4
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