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authorHerbert Xu <herbert@gondor.apana.org.au>2017-07-04 12:21:12 +0800
committerHerbert Xu <herbert@gondor.apana.org.au>2017-07-05 21:21:18 +0800
commitb82ce24426a4071da9529d726057e4e642948667 (patch)
tree3ac22b5c101ddb13b2ace425cd1cc689726b5311 /arch/x86/crypto
parent035f901eac4d2d0fd40f3055026355d55d46949f (diff)
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: <stable@vger.kernel.org> Fixes: 7c1da8d0d046 ("crypto: sha - SHA1 transform x86_64 AVX2") Reported-by: Jan Stancek <jstancek@redhat.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/x86/crypto')
-rw-r--r--arch/x86/crypto/sha1_ssse3_glue.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/crypto/sha1_ssse3_glue.c b/arch/x86/crypto/sha1_ssse3_glue.c
index fc61739150e7..f960a043cdeb 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;