5425750f03
Create a struct cryptop_data which contains state needed for a single symmetric crypto operation and move that state out of the session. This closes a race with the CRYPTO_F_DONE flag that can result in use after free. While here, remove the 'cse->error' member. It was just a copy of 'crp->crp_etype' and cryptodev_op() and cryptodev_aead() checked both 'crp->crp_etype' and 'cse->error'. Similarly, do not check for an error from mtx_sleep() since it is not used with PCATCH or a timeout so cannot fail with an error. PR: 218597 Reviewed by: kib Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D13928
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