Comment # 12 on bug 1175908 from Franck Bui

(In reply to Harald Koenig from comment #9)
> dmesg output:
> [    7.611008] Console: switching to colour frame buffer device 240x67
> [    7.634358] i915 0000:00:02.0: fb0: i915drmfb frame buffer device
> [   16.169035] device-mapper: table: 254:0: crypt: Error allocating crypto
> tfm
> [   16.169054] device-mapper: ioctl: error adding target to table
> [  245.056425] EXT4-fs (sda3): mounted filesystem with ordered data mode.
> Opts: (null)
> [  377.736756] device-mapper: table: 254:0: crypt: Error allocating crypto
> tfm
> [  377.736780] device-mapper: ioctl: error adding target to table
> 

@Takashi, it's failing in the kernel (after libcryptsetup did the ioctl).

Can you please tell us what went wrong exactly ?

> 
> strace shows that /etc/crypttab is not accessed/opened at all
> 

systemd-cryptsetup doesn't access to crypttab, it's
systemd-cryptsetup-generator which does.