Patch "kconfig.h: Include compiler types to avoid missed struct attributes" has been added to the 4.14-stable tree

Patch "kconfig.h: Include compiler types to avoid missed struct attributes" has been added to the 4.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    kconfig.h: Include compiler types to avoid missed struct attributes

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     kconfig.h-include-compiler-types-to-avoid-missed-struct-attributes.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 28128c61e08eaeced9cc8ec0e6b5d677b5b94690 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Thu, 22 Feb 2018 09:41:40 -0800
Subject: kconfig.h: Include compiler types to avoid missed struct attributes

From: Kees Cook <keescook@chromium.org>

commit 28128c61e08eaeced9cc8ec0e6b5d677b5b94690 upstream.

The header files for some structures could get included in such a way
that struct attributes (specifically __randomize_layout from path.h) would
be parsed as variable names instead of attributes. This could lead to
some instances of a structure being unrandomized, causing nasty GPFs, etc.

This patch makes sure the compiler_types.h header is included in
kconfig.h so that we've always got types and struct attributes defined,
since kconfig.h is included from the compiler command line.

Reported-by: Patrick McLean <chutzpah@gentoo.org>
Root-caused-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name>
Fixes: 3859a271a003 ("randstruct: Mark various structs for randomization")
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/kconfig.h |    3 +++
 1 file changed, 3 insertions(+)

--- a/include/linux/kconfig.h
+++ b/include/linux/kconfig.h
@@ -64,4 +64,7 @@
  */
 #define IS_ENABLED(option) __or(IS_BUILTIN(option), IS_MODULE(option))
 
+/* Make sure we always have all types and struct attributes defined. */
+#include <linux/compiler_types.h>
+
 #endif /* __LINUX_KCONFIG_H */


Patches currently in stable-queue which might be from keescook@chromium.org are

queue-4.14/mips-boot-define-__assembly__-for-its.s-build.patch
queue-4.14/kconfig.h-include-compiler-types-to-avoid-missed-struct-attributes.patch