linux-image-3.13.0-48-generic with disk encryption won't boot

[KayNettle]

After upgrading to linux-image-3.13.0-48-generic, I can't unencrypt the disk. I get device-mapper: table: 253:0: crypt: Error allocating crypto tfm. I had to boot to an older kernel version to get the machines up.

[Tyler Hicks (tyhicks)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1440750

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[KayNettle (pkn)]

The state requires us to encrypt the whole disk, so I can't run that command with the 3.13.0-48 kernel. Is there a kernel flag I could add to the boot line that would help?

[KayNettle (pkn)]

Sorry guy, you can close this. I found the problem. I had blacklisted kernel modules that the kernel needed to boot the encrypted disk. The older version of the kernel ignored my blacklist and loaded the modules.