Not sure which kernel versions this applies to, but on 4.9.0-0.rc4.git2.2.fc26.x86_64 at least you can trivially easy make the kernel oops by running this little program:
Author: Herbert Xu <email@example.com>
Date: Thu Sep 1 17:16:44 2016 +0800
crypto: algif_hash - Handle NULL hashes correctly
Right now attempting to read an empty hash simply returns zeroed
bytes, this patch corrects this by calling the digest function
using an empty input.
Reported-by: Russell King - ARM Linux <firstname.lastname@example.org>
Signed-off-by: Herbert Xu <email@example.com>
based on the bisect. I'll start a thread upstream.
Fix confirmed from maintainer upstream https://patchwork.kernel.org/patch/9434741/