[Bug 927828] Re: sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed.

[TJ]

Brett, thanks. The reason for the request was I was discussing the issue
with Colin Watson on IRC and he pointed out the package isn't pulled in
by default. So aside from explicit manual installations as in your case
we wan't to figure out how it got installed - since it is the only PAM
module we know of (so far) that exposes the underlying bug in sudo.

We can see a reverse-depends on libpam-mount from sadms and I wanted to
confirm that is the way libpam-mount got onto systems without explicit
installation.

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Title:
  sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void
  *)0)' failed.

Status in sudo:
  Unknown
Status in “libpam-mount” package in Ubuntu:
  Invalid
Status in “sudo” package in Ubuntu:
  Triaged
Status in “sudo” package in Debian:
  New

Bug description:
  When running sudo it executes properly the first time during a session
  but, after credentials are cached, further attempts result in an
  error:

  sciri at Rico:~$ sudo id
  [sudo] password for sciri:
  uid=0(root) gid=0(root) groups=0(root)
  sciri at Rico:~$ sudo id
  uid=0(root) gid=0(root) groups=0(root)
  sudo: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed.
  Aborted

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: libpam-mount 2.10-2
  ProcVersionSignature: Ubuntu 3.2.0-14.23-generic 3.2.3
  Uname: Linux 3.2.0-14-generic x86_64
  NonfreeKernelModules: nvidia wl
  ApportVersion: 1.91-0ubuntu1
  Architecture: amd64
  CheckboxSubmission: 15c9c9b122c9273f52b28c9a5df794ac
  CheckboxSystem: 7e42599bda39ea7ff8b528272b6ef52b
  Date: Mon Feb  6 14:21:24 2012
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64+mac (20110901)
  SourcePackage: libpam-mount
  UpgradeStatus: Upgraded to precise on 2012-02-06 (0 days ago)

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