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

[Felix Lechner]

The proposed fix of changing [default=1] to [default=0] in '/etc/pam.d
/common-session-noninteractive' causes problems with 'cron'.

Cron jobs are no longer executed. Syslog entry says 'CRON[process id]:
Permission denied'.

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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:
  Confirmed
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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