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IVs != 96 bits get hashed with GHASH to bring them to 96 bits. Any call to GHASH will mix the ghash state in gcm_ghash. This is expected to be zero at first use in an encrypt or decrypt operation, so it needs to be zeroed after using GHASH in setup. gcm_init() does this, but gcm_avx_init() zeroed it before setup, not after, resulting in incorrect encrypt/decrypt results when using AVX GCM with an IV != 96 bits. OpenZFS _always_ uses a 96 bit IV (ZIO_DATA_IV_LEN) so this will never have been hit in any real-world use, which is extremely fortunate, as we would have incorrectly-encrypted data on-disk. Still, as long as we have this code here we should make sure it's correct. Thanks-to: Joel Low <joel@joelsplace.sg> Sponsored-by: https://despairlabs.com/sponsor/ Signed-off-by: Rob Norris <robn@despairlabs.com> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de> Reviewed-by: Attila Fülöp <attila@fueloep.org> |
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OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.
Official Resources
- Documentation - for using and developing this repo
- ZoL Site - Linux release info & links
- Mailing lists
- OpenZFS site - for conference videos and info on other platforms (illumos, OSX, Windows, etc)
Installation
Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.
Contribute & Develop
We have a separate document with contribution guidelines.
We have a Code of Conduct.
Release
OpenZFS is released under a CDDL license.
For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197
Supported Kernels
- The
METAfile contains the officially recognized supported Linux kernel versions. - Supported FreeBSD versions are any supported branches and releases starting from 13.0-RELEASE.