This is a note to let you know that I've just added the patch titled
kasan: update kasan_global for gcc 7
to the 4.8-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:
kasan-update-kasan_global-for-gcc-7.patch
and it can be found in the queue-4.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 045d599a286bc01daa3510d59272440a17b23c2e Mon Sep 17 00:00:00 2001
From: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Date: Wed, 30 Nov 2016 15:54:13 -0800
Subject: kasan: update kasan_global for gcc 7
From: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
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@xxxxxxxxxx
Signed-off-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Acked-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/compiler-gcc.h | 4 +++-
mm/kasan/kasan.h | 3 +++
2 files changed, 6 insertions(+), 1 deletion(-)
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -256,7 +256,9 @@
#endif
#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP && !__CHECKER__ */
-#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
--- a/mm/kasan/kasan.h
+++ b/mm/kasan/kasan.h
@@ -53,6 +53,9 @@ struct kasan_global {
#if KASAN_ABI_VERSION >= 4
struct kasan_source_location *location;
#endif
+#if KASAN_ABI_VERSION >= 5
+ char *odr_indicator;
+#endif
};
/**
Patches currently in stable-queue which might be from dvyukov@xxxxxxxxxx are
queue-4.8/kasan-update-kasan_global-for-gcc-7.patch
queue-4.8/thp-fix-corner-case-of-munlock-of-pte-mapped-thps.patch
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