Commit f1bf5d83 authored by Herbert Xu's avatar Herbert Xu Committed by Greg Kroah-Hartman

crypto: sha1-ssse3 - Disable avx2

commit b82ce244 upstream.

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.

Fixes: 7c1da8d0 ("crypto: sha - SHA1 transform x86_64 AVX2")
Reported-by: default avatarJan Stancek <jstancek@redhat.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fc43f093
......@@ -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;
......
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