[Bug 275306] 14.0-RELEASE: ossl(4) causes data corruption on encrypted ZFS filesystems/volumes

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=275306

--- Comment #14 from Mark Johnston <markj@FreeBSD.org> ---
(In reply to Daniel Austin from comment #12)
Ok, thank you.  It seems that the probe order is somewhat arbitrary: if you
load ossl.ko from loader.conf, you may or may not end up using ossl(4) once the
system boots up.  GENERIC kernels have aesni(4) as well, and the kernel will
use whichever happens to have been probed first.

I was able to reproduce the panic and have a patch which fixes the problem in
my testing.  We'll have it released with some other 14.0 errata later this
week.

I do not have a solution for the data errors, I apologize.  Anything that was
written to an aes-gcm encrypted dataset using ossl on 14.0 cannot be trusted. 
(Prior to 14.0, having ossl.ko loaded didn't matter since it didn't implement
any ciphers used by OpenZFS.)

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