Comment 28 for bug 813146

I am seeing the same thing in different circumstances: while developing Launchpad, running "utilities/start-dev-soyuz.sh" and then "make run_all", I've seen the similar OOPS like in comment #23 twice now (i.e. exception in decrypt_scatterlist, vs. the OOPS from bug 836513 which happens in encrypt_scatterlist).

The worst thing is that system seems to remain usable (except that gnome-screensaver locks you out of the system until you kill it from a virtual console or ssh), but after you reboot, your changes/new files created after the panic are lost.

FWIW, my dmesg has following lines (more of them, but just at different times) on boot, but those could be the old "empty files start appearing" bug in ecryptfs or something different:

[ 68.145110] Valid eCryptfs headers not found in file header region or xattr region
[ 68.145113] Either the lower file is not in a valid eCryptfs format, or the key could not be retrieved. Plaintext passthrough mode is not enabled; returning -EIO