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| author | Herbert Xu <herbert@gondor.apana.org.au> | 2017-07-04 04:21:12 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-21 05:42:23 (GMT) |
| commit | db923288f37f42fae8afe58d448ed77e43cf56b1 (patch) | |
| tree | 6878777c5a6b9c3fec5a168f3fea96e069951c82 | |
| parent | 81cc2ef2677b32252d23b50e6cef7c994bf6ec03 (diff) | |
| download | linux-db923288f37f42fae8afe58d448ed77e43cf56b1.tar.xz | |
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>
| -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 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; |