On Thu, Mar 03, 2022 at 10:27:47AM +1200, Herbert Xu wrote: > On Wed, Mar 02, 2022 at 03:56:36PM +0100, Greg KH wrote: > > > > > If not, then these are the patches that should be backported: > > > 7bcb2c99f8ed crypto: algapi - use common mechanism for inheriting flags > > > 2eb27c11937e crypto: algapi - add NEED_FALLBACK to INHERITED_FLAGS > > > fbb6cda44190 crypto: algapi - introduce the flag CRYPTO_ALG_ALLOCATES_MEMORY > > > b8aa7dc5c753 crypto: drivers - set the flag CRYPTO_ALG_ALLOCATES_MEMORY > > > cd74693870fb dm crypt: don't use drivers that have CRYPTO_ALG_ALLOCATES_MEMORY > > > Herbert, correct me if I'm wrong here. > > > > These need to be manually backported as they do not apply cleanly. Can > > you provide such a set? Or should I just disable a specific driver here > > instead which would be easier overall? > > I think the safest thing is to disable qat in stable (possibly only > when DM_CRYPT is enabled/modular). The patches in question while > good may have too wide an effect for the stable kernel series. > > Giovanni, could you send Greg a Kconfig patch to do that? I was thinking, as an alternative, to lower the cra_priority in the QAT driver for the algorithms used by dm-crypt so they are not used by default. Is that a viable option? Sure, I can provide a patch for either the cra_priority or the Kconfig option for the stable kernels that don't have the patches above. -- Giovanni
