The patch titled
Subject: arch/x86/include/asm/efi.h: fix build failure
has been added to the -mm tree. Its filename is
x86-fix-build-failure.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/x86-fix-build-failure.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/x86-fix-build-failure.patch
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------------------------------------------------------
From: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Subject: arch/x86/include/asm/efi.h: fix build failure
With KMEMCHECK=y, KASAN=n:
arch/x86/platform/efi/efi.c:673:3: error: implicit declaration of function `memcpy' [-Werror=implicit-function-declaration]
arch/x86/platform/efi/efi_64.c:139:2: error: implicit declaration of function `memcpy' [-Werror=implicit-function-declaration]
arch/x86/include/asm/desc.h:121:2: error: implicit declaration of function `memcpy' [-Werror=implicit-function-declaration]
Don't #undef memcpy if KASAN=n.
Fixes: 769a8089c1fd ("x86, efi, kasan: #undef memset/memcpy/memmove per arch")
Signed-off-by: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
Reported-by: Ingo Molnar <mingo@xxxxxxxxxx>
Reported-by: Sedat Dilek <sedat.dilek@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/include/asm/efi.h | 2 ++
1 file changed, 2 insertions(+)
diff -puN arch/x86/include/asm/efi.h~x86-fix-build-failure arch/x86/include/asm/efi.h
--- a/arch/x86/include/asm/efi.h~x86-fix-build-failure
+++ a/arch/x86/include/asm/efi.h
@@ -86,6 +86,7 @@ extern u64 asmlinkage efi_call(void *fp,
extern void __iomem *__init efi_ioremap(unsigned long addr, unsigned long size,
u32 type, u64 attribute);
+#ifdef CONFIG_KASAN
/*
* CONFIG_KASAN may redefine memset to __memset. __memset function is present
* only in kernel binary. Since the EFI stub linked into a separate binary it
@@ -95,6 +96,7 @@ extern void __iomem *__init efi_ioremap(
#undef memcpy
#undef memset
#undef memmove
+#endif
#endif /* CONFIG_X86_32 */
_
Patches currently in -mm which might be from ryabinin.a.a@xxxxxxxxx are
x86-fix-build-failure.patch
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