With Ubuntu 14.04 and linux-image-3.13.0-83 it is caused by a kernel<->userland breakage. See: https://lkml.org/lkml/2015/12/29/383 It is caused by [crypto: af_alg - Disallow bind/setkey/... after accept(2)] added to 3.13.0-80.124 with [ Upstream Kernel Changes ].
I've patched cryptsetup-1.6.1 to handle it. See attached patch. The cryptsetup bundled with Ubuntu 14.04 tries to change the socket after accepting it while the newer kernel doesn't allow changes after accepting the connection. Se6 seems using a newer Ubuntu version, so maybe it's a different cause there. Or maybe the newer 4.5 kernel reverts those upstream patches!? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1558079 Title: cryptsetup tcryptOpen doesn't work anymore Status in linux package in Ubuntu: Confirmed Bug description: I'm using cryptsetup to open TrueCrypt encrypted NTFS filesystems: cryptsetup tcryptOpen /dev/sdf2 tcrypt At least until linux-image-3.13.0-79-generic this work fine. Booting linux-image-3.13.0-83-generic and running cryptsetup results in: Required kernel crypto interface not available. Ensure you have algif_skcipher kernel module loaded. The module algif_skcipher is loaded, so the tenor of the error message is wrong, but cryptsetup cannot open the container, so at least there _is_ some error. Probably it's related to some unsupported instruction set. With linux-image-3.13.0-83 there are errors in dmesg which are not present with linux-image-3.13.0-79: AVX instructions are not detected System information: OS: Ubuntu 14.04.4 LTS CPU: Phenom II X6 TCRYPT header information for /dev/sdf2 Version: 5 Driver req.: 7 Sector size: 512 MK offset: 131072 PBKDF2 hash: ripemd160 Cipher chain: aes Cipher mode: xts-plain64 MK bits: 512 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1558079/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
