unity-control-center crashed with SIGSEGV in set_current_page()

[David R. Hedges]

I attempted to enroll fingerprint, but the fingerprint device could not be opened (presumably because it was in use by fprint_demo running in the background). An error message stating the device could not be opened was displayed, but after I clicked "OK" in that dialog, unity-conrol-center crashed.

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: unity-control-center 15.04.0+16.04.20160315-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-13.29-generic 4.4.5
Uname: Linux 4.4.0-13-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Mar 18 11:33:05 2016
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/unity-control-center
InstallationDate: Installed on 2016-03-11 (7 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307)
ProcCmdline: unity-control-center
ProcEnviron:
 PATH=(custom, no user)
 SHELL=/bin/bash
 LANG=en_US.UTF-8
 LANGUAGE=en_US
 XDG_RUNTIME_DIR=<set>
SegvAnalysis:
 Segfault happened at: 0x7f341cf31a5f: mov 0x8(%rax),%rsi
 PC (0x7f341cf31a5f) ok
 source "0x8(%rax)" (0x00000008) not located in a known VMA region (needed readable region)!
 destination "%rsi" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity-control-center
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 gtk_assistant_next_page () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: unity-control-center crashed with SIGSEGV in gtk_assistant_next_page()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 set_current_page (assistant=0x23f6360, page_num=1) at /build/gtk+3.0-a73mKw/gtk+3.0-3.18.9/./gtk/gtkassistant.c:973
 compute_next_step (assistant=assistant@entry=0x23f6360) at /build/gtk+3.0-a73mKw/gtk+3.0-3.18.9/./gtk/gtkassistant.c:1022
 gtk_assistant_next_page (assistant=0x23f6360) at /build/gtk+3.0-a73mKw/gtk+3.0-3.18.9/./gtk/gtkassistant.c:1590
 _g_closure_invoke_va () from /tmp/apport_sandbox_dPj9J6/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /tmp/apport_sandbox_dPj9J6/usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0