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[Bug 837285] Re: lightdm assert failure: lightdm: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed.

 

If you want to try to reconstruct the sudo error you have to run sudo
twice, though:

sudo test
[here you will get no error message]
sudo test
[here you will get the error message]

Seems like the error is related to the mechanism that allows you to use
sudo without having to enter the password again every time if the time
span that has passed since the last use of sudo isn't too big.

** Bug watch added: Debian Bug tracker #648698
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648698

** Also affects: libpam-mount (Debian) via
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648698
   Importance: Unknown
       Status: Unknown

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https://bugs.launchpad.net/bugs/837285

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

Status in “lightdm” package in Ubuntu:
  Confirmed
Status in “libpam-mount” package in Debian:
  Unknown

Bug description:
  Logged in with GNOME as session.

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: lightdm 0.9.3-0ubuntu8
  ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
  Uname: Linux 3.0.0-9-generic x86_64
  NonfreeKernelModules: nvidia
  Architecture: amd64
  AssertionMessage: lightdm: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed.
  CrashCounter: 1
  Date: Tue Aug 30 12:18:08 2011
  ExecutablePath: /usr/sbin/lightdm
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
  ProcCmdline: lightdm
  ProcEnviron: PATH=(custom, no user)
  Signal: 6
  SourcePackage: lightdm
  StacktraceTop:
   __GI___assert_fail (assertion=0x7f0c2294a63c "user != ((void *)0)", file=<optimized out>, line=417, function=<optimized out>) at assert.c:81
   ?? () from /lib/security/pam_mount.so
   pam_sm_close_session () from /lib/security/pam_mount.so
   ?? () from /lib/x86_64-linux-gnu/libpam.so.0
   ?? ()
  Title: lightdm assert failure: lightdm: pam_mount.c:417: modify_pm_count: Assertion `user != ((void *)0)' failed.
  UpgradeStatus: Upgraded to oneiric on 2011-08-19 (10 days ago)
  UserGroups:

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