I sent the fixes to lkml. I will update here when they get it upstream.
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https://bugs.launchpad.net/bugs/1666483
Title:
ecryptfs fails to load block cipher on ppc64el
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Zesty:
Fix Committed
Bug description:
Specifically, this is not an ecryptfs issue. ecryptfs attempts to
load the CBC AES block cipher and the ppc64el specific vmx_crypto
crypto driver gets loaded. However, this is using the older blkcipher
API rather than the newer skcipher API as introduced by the following
commit in 4.10:
commit 79c65d179a40e145287e59b33dc782a7c4bf0986
Author: Herbert Xu <herb...@gondor.apana.org.au>
Date: Tue Nov 22 20:08:39 2016 +0800
crypto: cbc - Convert to skcipher
This patch converts cbc over to the skcipher interface. It also
rearranges the code to allow it to be reused by drivers.
We see the following error:
Feb 20 16:57:53 gulpin kernel: Failed to allocate transformation for
'cbc(aes)': -2
Feb 20 16:57:53 gulpin kernel: ecryptfs_init_crypt_ctx: cryptfs:
init_crypt_ctx(): Error initializing cipher [cbc(aes)]
Feb 20 16:57:53 gulpin kernel: ecryptfs_new_file_context: Error initializing
cryptographic context for cipher [aes]: rc = [-2]
Feb 20 16:57:53 gulpin kernel: ecryptfs_initialize_file: Error creating new
file context; rc = [-2]
Feb 20 16:57:53 gulpin kernel: Failed to allocate transformation for
'cbc(aes)': -2
Loading the software based cbc crypto before starting ecryptfs rather
than the optimized vmx_crypto allows ecryptfs to run correctly.
So, this core issue is that we need vmx_crypto updated to the newer
crypto API to resolve this issue
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