Still Failing: openssl/openssl#25172 (master - e9f148c)

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Sat May 18 06:21:52 UTC 2019

Build Update for openssl/openssl

Build: #25172
Status: Still Failing

Duration: 19 mins and 2 secs
Commit: e9f148c (master)
Author: Daniel Axtens
Message: ppc assembly pack: always increment CTR IV as quadword

The kernel self-tests picked up an issue with CTR mode. The issue was
detected with a test vector with an IV of
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFD: after 3 increments it should wrap
around to 0.

There are two paths that increment IVs: the bulk (8 at a time) path,
and the individual path which is used when there are fewer than 8 AES
blocks to process.

In the bulk path, the IV is incremented with vadduqm: "Vector Add
Unsigned Quadword Modulo", which does 128-bit addition.

In the individual path, however, the IV is incremented with vadduwm:
"Vector Add Unsigned Word Modulo", which instead does 4 32-bit
additions. Thus the IV would instead become
FFFFFFFFFFFFFFFFFFFFFFFF00000000, throwing off the result.

Use vadduqm.

This was probably a typo originally, what with q and w being

CLA: trivial

Reviewed-by: Richard Levitte <levitte at>
Reviewed-by: Paul Dale <paul.dale at>
(Merged from

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