On Mon, Jul 03, 2017 at 08:33:44PM +0800, Herbert Xu wrote:
> On Sat, Jun 24, 2017 at 12:56:52AM +0000, Albrekht, Ilya wrote:
> > Hello all,
> >
> > I'm sorry for late reply (I was out of office for a month).
> >
> > It's been a while since we touched this code. We are going to do our best
> > to support it. I'll be back to the office earlier next week and will figure
> > out the fix ASAP.
>
> Any update on this?
For the time being I'm going to disable this:
---8<---
Subject: crypto: sha1-ssse3 - Disable avx2
It has been reported that sha1-avx2 can cause page faults by reading
beyond the end of the input. This patch disables it until it can be
fixed.
Cc: <sta...@vger.kernel.org>
Fixes: 7c1da8d0d046 ("crypto: sha - SHA1 transform x86_64 AVX2")
Reported-by: Jan Stancek <jstan...@redhat.com>
Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
diff --git a/arch/x86/crypto/sha1_ssse3_glue.c
b/arch/x86/crypto/sha1_ssse3_glue.c
index fc61739..f960a04 100644
--- a/arch/x86/crypto/sha1_ssse3_glue.c
+++ b/arch/x86/crypto/sha1_ssse3_glue.c
@@ -201,7 +201,7 @@ asmlinkage void sha1_transform_avx2(u32 *digest, const char
*data,
static bool avx2_usable(void)
{
- if (avx_usable() && boot_cpu_has(X86_FEATURE_AVX2)
+ if (false && avx_usable() && boot_cpu_has(X86_FEATURE_AVX2)
&& boot_cpu_has(X86_FEATURE_BMI1)
&& boot_cpu_has(X86_FEATURE_BMI2))
return true;
--
Email: Herbert Xu <herb...@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
