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[Bug 1425362] Re: unity8 crashed with SIGSEGV in QLightDM::GreeterImpl::authenticateWithPam() when logging in

 

Sorry, I missed your ping on IRC (I was giving a talk about this stuff
at that time :)), but yes: I've just downloaded latest vivid, installed
the unity8 desktop on mir, unblacklisted the mesa drivers from
virtualbox (to get 3d acceleration), and that's it.

I'll try the debs as soon as jenkins will build them (in case I miss
that, please ping me)

Thanks

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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

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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