diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2017-07-04 12:21:12 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-21 07:44:58 +0200 |
| commit | f1bf5d83a9c17b739f2a944e3686d6b97693e67f (patch) | |
| tree | a650b74e335c2ffcd88dabb66bb42b7c6e2efb0b /arch | |
| parent | fc43f0935035008a65e1a8ed50c99679dce65377 (diff) | |
crypto: sha1-ssse3 - Disable avx2
commit b82ce24426a4071da9529d726057e4e642948667 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: 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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/crypto/sha1_ssse3_glue.c | 2 |
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 dd14616b7739..7de207a11014 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; |