From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.rutland@arm.com (Mark Rutland) Date: Fri, 9 Oct 2015 10:48:51 +0100 Subject: [PATCH v6 0/6] KASAN for arm64 In-Reply-To: <561789A2.5050601@gmail.com> References: <1442482692-6416-1-git-send-email-ryabinin.a.a@gmail.com> <20151007100411.GG3069@e104818-lin.cambridge.arm.com> <20151008111144.GC7275@leverpostej> <56165228.8060201@gmail.com> <20151008151144.GM17192@e104818-lin.cambridge.arm.com> <561789A2.5050601@gmail.com> Message-ID: <20151009094851.GA20507@leverpostej> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Oct 09, 2015 at 12:32:18PM +0300, Andrey Ryabinin wrote: [...] > 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 > --- > 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