tree 525f4072a64b4045190b0104fe443b6df4595455
parent 27ffcc6e19bbafddf1b59ec0bc6df2904de7eb2c
author Adam Langley <alangley@gmail.com> 1648838792 -0700
committer Boringssl LUCI CQ <boringssl-scoped@luci-project-accounts.iam.gserviceaccount.com> 1649442325 +0000

hrss: always normalize.

Polynomials have more elements than strictly needed in order to better
align them for when vector instructions are available. The
|poly_mul_vec| path is sensitive to this and so zeros out the extra
elements before starting work. That means that it'll write to a const
pointer, even if it'll always write the same value. However, while this
code is intended for ephemeral uses, we have a case where this is a data
race that upsets tools.

Therefore this change always normalises the polynomials, even if it's
running in a configuration that doesn't care.

Change-Id: I83eb04c5ce7c4e7ca959f2dd7fbd3efbe306d989
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/52186
Reviewed-by: David Benjamin <davidben@google.com>
Commit-Queue: Adam Langley <agl@google.com>