lightdm crashed with SIGSEGV

[nvsoar]

On boot.

ProblemType: Crash
DistroRelease: Ubuntu 16.10
Package: lightdm 1.19.1-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-24.43-generic 4.4.10
Uname: Linux 4.4.0-24-generic i686
ApportVersion: 2.20.2-0ubuntu1
Architecture: i386
Date: Wed Jun 22 17:58:23 2016
ExecutablePath: /usr/sbin/lightdm
InstallationDate: Installed on 2016-04-28 (56 days ago)
InstallationMedia: Ubuntu-MATE 16.10 "Yakkety Yak" - Alpha i386 (20160426)
ProcCmdline: lightdm --session-child 12 19
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0xb774e953: mov 0x4(%eax),%edi
 PC (0xb774e953) ok
 source "0x4(%eax)" (0xb6f42d08) not located in a known VMA region (needed readable region)!
 destination "%edi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: lightdm
StacktraceTop:
 ?? () from /lib/ld-linux.so.2
 ?? () from /lib/ld-linux.so.2
 ?? () from /lib/ld-linux.so.2
 ?? () from /lib/ld-linux.so.2
 ?? () from /lib/i386-linux-gnu/libdl.so.2
Title: lightdm crashed with SIGSEGV
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[Apport retracing service (apport)]

StacktraceTop:
 munmap () at ../sysdeps/unix/syscall-template.S:84
 _dl_unmap_segments (l=l@entry=0x935f7f8) at ./dl-unmap-segments.h:32
 _dl_unmap (map=map@entry=0x935f7f8) at ../sysdeps/i386/tlsdesc.c:262
 _dl_close_worker (map=0x935f7f8, force=false) at dl-close.c:678
 _dl_close (_map=0x935f7f8) at dl-close.c:822

[Robert Ancell (robert-ancell)]

Stacktrace looks like might be an issue inside PAM.

[Launchpad Janitor (janitor)]

[Expired for lightdm (Ubuntu) because there has been no activity for 60 days.]