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[kevin gunn <kevin.gunn@xxxxxxxxxxxxx>]

** Also affects: unity8 (Ubuntu RTM)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1425362

Title:
  unity8 crashed with SIGSEGV in
  QLightDM::GreeterImpl::authenticateWithPam() when logging in

Status in unity8 package in Ubuntu:
  In Progress
Status in unity8 package in Ubuntu RTM:
  New

Bug description:
  I'm trying to run unity8 in a vivid vmware session (mir works fine here).
  But unity8 crashes when logging in, and it happens again everytime I insert my password in the u8 lockscreen.
  ---
  The only way to successfully log in unity8 was to add myself to the "nopasswdlogin" group. This made the unity8 pam module checks, and thus no crash.

  ProblemType: CrashDistroRelease: Ubuntu 15.04
  Package: unity8 8.02+15.04.20150224-0ubuntu1
  ProcVersionSignature: Ubuntu 3.18.0-13.14-generic 3.18.5
  Uname: Linux 3.18.0-13-generic x86_64
  ApportVersion: 2.16.1-0ubuntu2
  Architecture: amd64
  CrashCounter: 1
  Date: Tue Feb 24 18:09:32 2015
  ExecutablePath: /usr/bin/unity8
  InstallationDate: Installed on 2015-02-25 (0 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150224)
  ProcCmdline: unity8
  SegvAnalysis:
   Segfault happened at: 0x7fb33b34c3a9 <_IO_vfprintf_internal+5561>:	repnz scas %es:(%rdi),%al
   PC (0x7fb33b34c3a9) ok
   source "%es:(%rdi)" (0xffffffff) not located in a known VMA region (needed readable region)!
   destination "%al" ok
   Stack memory exhausted (SP below stack segment)
  SegvReason: reading unknown VMA
  Signal: 11SourcePackage: unity8
  StacktraceTop:
   _IO_vfprintf_internal (s=s@entry=0x7fb2ea5b69d0, format=<optimized out>, format@entry=0x7fb2f7a8f2d3 "%s(%s:%s):", ap=ap@entry=0x7fb2ea5b6b08) at vfprintf.c:2039
   __GI___vasprintf_chk (result_ptr=0x7fb2ea5b6be8, flags=1, format=0x7fb2f7a8f2d3 "%s(%s:%s):", args=args@entry=0x7fb2ea5b6b08) at vasprintf_chk.c:66
   __asprintf_chk (result_ptr=<optimized out>, flags=<optimized out>, format=<optimized out>) at asprintf_chk.c:32
   pam_vsyslog () from /lib/x86_64-linux-gnu/libpam.so.0
   pam_syslog () from /lib/x86_64-linux-gnu/libpam.so.0
  Title: unity8 crashed with SIGSEGV in _IO_vfprintf_internal()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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