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crypto: xcbc - Remove VLA usage
authorKees Cook <keescook@chromium.org>
Tue, 7 Aug 2018 21:18:35 +0000 (14:18 -0700)
committerHerbert Xu <herbert@gondor.apana.org.au>
Tue, 4 Sep 2018 03:35:03 +0000 (11:35 +0800)
commit3bdd23f886c08a0d649c535e1e2cf083ec600036
tree80ea091af3f8ed5646cf53a58cb485966c9fff66
parent578bdaabd015b9b164842c3e8ace9802f38e7ecc
crypto: xcbc - Remove VLA usage

In the quest to remove all stack VLA usage from the kernel[1], this uses
the maximum blocksize and adds a sanity check. For xcbc, the blocksize
must always be 16, so use that, since it's already being enforced during
instantiation.

[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto/xcbc.c