SHA1-MB algorithm broken on latest kernel

From	Megha Dey <megha.dey@linux.intel.com>
Newsgroups	linux.kernel
Subject	SHA1-MB algorithm broken on latest kernel
Date	2016-05-13 01:30 +0200
Message-ID	<ry8dk-7SC-3@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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Hi,
 
When booting latest kernel with the CONFIG_CRYPTO_SHA1_MB enabled, I
observe a panic.
 
After having a quick look, on reverting the following patches, I am able
to complete the booting process.
aec4d0e301f17bb143341c82cc44685b8af0b945
8691ccd764f9ecc69a6812dfe76214c86ac9ba06
68874ac3304ade7ed5ebb12af00d6b9bbbca0a16
 
Of the 3 patches, aec4d0e301f17bb143341c82cc44685b8af0b945 seems wrong.
The r10 to r15 registers are used in sha1_x8_avx2.S, which is called
from sha1_mb_mgr_flush_avx2.S.
 
I do not think the functionality of the SHA1-MB crypto algorithm has
been tested after applying these changes. (I am not sure if any of the
other crypto algorithms have been affected by these changes).
 
Thanks,
Megha

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SHA1-MB algorithm broken on latest kernel Megha Dey <megha.dey@linux.intel.com> - 2016-05-13 01:30 +0200
  Re: SHA1-MB algorithm broken on latest kernel Herbert Xu <herbert@gondor.apana.org.au> - 2016-05-13 05:20 +0200
    Re: SHA1-MB algorithm broken on latest kernel Ingo Molnar <mingo@kernel.org> - 2016-05-13 08:00 +0200
      Re: SHA1-MB algorithm broken on latest kernel Megha Dey <megha.dey@linux.intel.com> - 2016-05-13 19:30 +0200
        Re: SHA1-MB algorithm broken on latest kernel Josh Poimboeuf <jpoimboe@redhat.com> - 2016-05-16 16:50 +0200
          Re: SHA1-MB algorithm broken on latest kernel Megha Dey <megha.dey@linux.intel.com> - 2016-05-16 20:30 +0200
            [PATCH] crypto/sha1-mb: make sha1_x8_avx2() conform to C function ABI Josh Poimboeuf <jpoimboe@redhat.com> - 2016-05-16 22:20 +0200
              Re: [PATCH] crypto/sha1-mb: make sha1_x8_avx2() conform to C  function ABI Megha Dey <megha.dey@linux.intel.com> - 2016-05-16 23:40 +0200
                Re: [PATCH] crypto/sha1-mb: make sha1_x8_avx2() conform to C  function ABI Josh Poimboeuf <jpoimboe@redhat.com> - 2016-05-16 23:50 +0200
                Re: [PATCH] crypto/sha1-mb: make sha1_x8_avx2() conform to C  function ABI Megha Dey <megha.dey@linux.intel.com> - 2016-05-17 01:10 +0200
                Re: [PATCH] crypto/sha1-mb: make sha1_x8_avx2() conform to C  function ABI Herbert Xu <herbert@gondor.apana.org.au> - 2016-05-17 08:40 +0200

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