Commit 99576162 authored Nov 30, 2016 by Dmitry Vyukov Committed by Greg Kroah-Hartman Dec 08, 2016

kasan: update kasan_global for gcc 7

commit 045d599a286bc01daa3510d59272440a17b23c2e upstream.

kasan_global struct is part of compiler/runtime ABI.  gcc revision
241983 has added a new field to kasan_global struct.  Update kernel
definition of kasan_global struct to include the new field.

Without this patch KASAN is broken with gcc 7.

Link: http://lkml.kernel.org/r/1479219743-28682-1-git-send-email-dvyukov@google.com


Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 61ab6247

include/linux/compiler-gcc.h

+3 −1

Original line number	Diff line number	Diff line
		@@ -251,7 +251,9 @@
		#endif
		#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */

		#if GCC_VERSION >= 50000
		#if GCC_VERSION >= 70000
		#define KASAN_ABI_VERSION 5
		#elif GCC_VERSION >= 50000
		#define KASAN_ABI_VERSION 4
		#elif GCC_VERSION >= 40902
		#define KASAN_ABI_VERSION 3

mm/kasan/kasan.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -52,6 +52,9 @@ struct kasan_global {
		#if KASAN_ABI_VERSION >= 4
		struct kasan_source_location *location;
		#endif
		#if KASAN_ABI_VERSION >= 5
		char *odr_indicator;
		#endif
		};

		static inline const void kasan_shadow_to_mem(const void shadow_addr)