...
Device /dev/sda2 is not a valid LUKS device
[3.043131] cryptsetup used greatest stack depth: 5176 bytes left
[3.043499] init used greatest stack depth: 3760 bytes left
[3.043686] Kernel panic - not syncing: Attempted to kill init!
{3.043869] PidL 1, comm: init Not tainted 3.0.6-gentoo #3
[3.044069] Call Trace:
[3.044252] [<...>] panic+0x8d/0x192
[3.044433] [<...>] do_exit+0x7e7/0x930
[3.044614] [<...>] do_group_exit+0x50/0xb0
[3.044795] [<...>] sys_exit_group+0x12/0x20
[3.044978] [<...>] system_call_fastpath+0x16/0x1b