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