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| author |   Herbert Xu <herbert@gondor.apana.org.au> | 2017-07-04 12:21:12 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2017-07-05 21:21:18 +0800 |
| commit | b82ce24426a4071da9529d726057e4e642948667 (patch) | |
| tree | 3ac22b5c101ddb13b2ace425cd1cc689726b5311 /arch/x86/crypto/sha1_ssse3_glue.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 (diff) | |
| download | linux-dev-b82ce24426a4071da9529d726057e4e642948667.tar.xz linux-dev-b82ce24426a4071da9529d726057e4e642948667.zip | |
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/sha1_ssse3_glue.c')
| -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 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; |