package libkadm5srv-mit8 1.10.1+dfsg-6.1ubuntu1 failed to install/upgrade: libkadm5srv-mit8:all 1.12+dfsg-2ubuntu4 (Multi-Arch: no) kann nicht zusammen mit libkadm5srv-mit8 installiert werden, welches mehrere installierte Instanzen hat

This appears to hit a corner case with respect to multiarch, in that changing a package from Multi-Arch: same / Arch: any to Multi-Arch: no / Arch: all is not handled cleanly on upgrade.

As libkadm5srv-mit8 appears to now be a transitional package, the correct solution here would appear to be to make it Arch: any / Multi-Arch: same again.

Since I'd really like to see the gss infinite loop patch into trusty
I'm going to update the branch for that to also include this fix and
build packages.
Expect a branch link in a few minutes.

See https://launchpad.net/~hartmans/+archive/ubuntu-fixes packages building. I had to upload with a different version number on the branch because that ppa already had a krb5 build.

Hello Andreas, or anyone else affected,

Accepted krb5 into trusty-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/krb5/1.12+dfsg-2ubuntu5 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

What is the test case for this SRU?

To test:

Install precise.
On precise, enable multiple architectures (say amd64 and i386)
install libkadm5srv-mit8.

Update your sources.list to trusty, try installing libkadm5srv-mit8.
I'd expect that to fail.

Update your sources.list to also include trusty-proposed.
Upgrade libkadm5srv-mit8; I'd expect that to succeed.

I've phrased that in terms of manually changing sources.list rather than
using the release upgrader, because I don't know how to do a release
upgrade with proposed enabled. If there's an easy way to do that, then
I'd expect the following to work:

Install precise including both amd64 and i386 and install
libkadm5srv-mit8.
Do a release upgrade.
I'd expect it to fail.

Install precise including both amd64 and i386. Install
libkadm5srv-mit8. Do a release upgrade to trusty with proposed enabled.
I'd expect that to succeed.

--Sam

This bug was fixed in the package krb5 - 1.12+dfsg-2ubuntu5

---------------
krb5 (1.12+dfsg-2ubuntu5) trusty; urgency=low

  * Use ADD_METHOD_NOLOOP rather than ADD_METHOD for new GSS-API entry
    points, avoids infinite recursive loop when a mechanism doesn't
    provide an entry point and does include calls back into the mechglue
    (LP: #1326500)
  * Make libkadm5srv-mit8 be arch: any multi-arch: same to work around
    upgrade bug (LP: #1334052)
  * Use tailq macros to work around GCC 4.8 optimizer bug and prevent
    infinite loop for database propagation (LP: #1347147)
 -- Sam Hartman <email address hidden> Wed, 30 Jul 2014 21:06:49 -0400