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SubjectRe: Device mapper failed to open temporary keystore device
On Fri, Apr 17 2015 at  4:11pm -0400,
Murilo Opsfelder Araújo <mopsfelder@gmail.com> wrote:

> Hello, everyone.
>
> Right after I enter my passphrase to unlock my cryptsetup partition,
> it displays the following error and asks for cryptsetup password again
> (it got stuck on this loop).
>
> This issue was introduced in next-20150413. next-20150410 is working just fine.
>
> Any hint on how to debug this?
>
> Unlocking the disk /dev/disk/by-uuid/<uuid> (sda5_crypt)
> Enter passphrase: *****
> [ 244.239821] device-mapper: table: 252:0: crypt: Error allocating crypto tfm
> device-mapper: reload ioctl on failed: No such file or directory
> Failed to open temporary keystore device.
> device-mapper: remove ioctl on temporary-cryptsetup-239 failed: No
> such device or address
> device-mapper: reload ioctl on temporary-cryptsetup-239 failed: No
> such device or address
> device-mapper: remove ioctl on temporary-cryptsetup-239 failed: No
> such device or address
> device-mapper: remove ioctl on temporary-cryptsetup-239 failed: No
> such device or address
> device-mapper: remove ioctl on temporary-cryptsetup-239 failed: No
> such device or address
> device-mapper: remove ioctl on temporary-cryptsetup-239 failed: No
> such device or address

git diff next-20150410^..next-20150413 drivers/md/dm-crypt.c points to
this commit as the nly dm-crpt.c change:
https://git.kernel.org/cgit/linux/kernel/git/device-mapper/linux-dm.git/commit/?h=for-next&id=5977907937afa2b5584a874d44ba6c0f56aeaa9c

Which appears unrelated given your "crypt: Error allocating crypto tfm"
error.

But any chance you can try reverting that commit from next-20150413 and
re-test just to be absolutely sure?

There are also some crypto changes that could very easily be the cause
of your problem (cc'ing Herbert), e.g.:

$ git diff next-20150410^..next-20150413 -- crypto | diffstat
algapi.c | 13 ++++-
algif_hash.c | 4 -
algif_skcipher.c | 4 -
sha1_generic.c | 102 ++++++++----------------------------------
sha256_generic.c | 133 ++++++++-----------------------------------------------
sha512_generic.c | 123 ++++++++------------------------------------------
6 files changed, 76 insertions(+), 303 deletions(-)


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