[PATCH v6 0/6] KASAN for arm64
From: mark.rutland@arm.com (Mark Rutland)
Date: 2015-10-09 09:49:36
Also in:
linux-efi, linux-mm, lkml
On Fri, Oct 09, 2015 at 12:32:18PM +0300, Andrey Ryabinin wrote: [...]
quoted hunk ↗ jump to hunk
I thought the EFI stub isolation patches create a copy of mem*() functions in the stub, but they are just create aliases with __efistub_ prefix. We only need to create some more aliases for KASAN. The following patch on top of the EFI stub isolation series works for me. Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com> --- arch/arm64/kernel/image.h | 6 ++++++ 1 file changed, 6 insertions(+)diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h index e083af0..6eb8fee 100644 --- a/arch/arm64/kernel/image.h +++ b/arch/arm64/kernel/image.h@@ -80,6 +80,12 @@ __efistub_strcmp = __pi_strcmp; __efistub_strncmp = __pi_strncmp; __efistub___flush_dcache_area = __pi___flush_dcache_area; +#ifdef CONFIG_KASAN +__efistub___memcpy = __pi_memcpy; +__efistub___memmove = __pi_memmove; +__efistub___memset = __pi_memset; +#endif
Ard's v4 stub isolation series has these aliases [1], as the stub requires these aliases regardless of KASAN in order to link. Thanks, Mark. [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2015-October/375708.html