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

[David Peter]

1) The sequence wich conducts to this bug report:
Open "System Settings"
Click on "Online Accounts"
Setup Google account
Click on "All Settings"
Click on "Security & Privacy"

Then the security panel did not open, system settings stcuked and crashed generating this bug report.

2) Bug is reproductable:
Open "System Settings"
Click on "Online Accounts"
Click on "All Settings"
Click on "Security & Privacy"
Then the "System Settings" panel close automatically

3) Observations:
- If you open "Security & Privacy" once before going to "Online Accounts" the bug does not happen.
- If the bug is not reproductable try switching On or Off the google account before going to "Security & Privacy"
- I did not try with any other type of online account else than the Google one
- It might even not correlated with an online account, maybe the switch "Online Accounts" to "Security & Privacy" is the root cause
- My system was a complete fresh install, it was the first power up and configuration, without anything else intsalled before except Chromium

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: unity-control-center 14.04.3+14.04.20140305.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-16.36-generic 3.13.5
Uname: Linux 3.13.0-16-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Mar 9 10:36:14 2014
ExecutablePath: /usr/bin/unity-control-center
InstallationDate: Installed on 2014-03-09 (0 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140309)
ProcCmdline: unity-control-center --overview
ProcEnviron:
 LANGUAGE=en_CA:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f446183df75 <__libc_calloc+213>: mov (%rax),%rdx
 PC (0x7f446183df75) ok
 source "(%rax)" (0x7f4424000000) not located in a known VMA region (needed readable region)!
 destination "%rdx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: unity-control-center
StacktraceTop:
 __libc_calloc (n=<optimized out>, elem_size=<optimized out>) at malloc.c:3222
 ?? ()
 ?? ()
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 gtk_tree_view_get_model@plt ()
Title: unity-control-center crashed with SIGSEGV in __libc_calloc()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
usr_lib_unity-control-center:
 activity-log-manager 0.9.7-0ubuntu10
 deja-dup 29.5-0ubuntu2

[Apport retracing service (apport)]

StacktraceTop:
 __libc_calloc (n=<optimized out>, elem_size=<optimized out>) at malloc.c:3222
 ?? ()
 ?? ()
 ?? () at /build/buildd/glib2.0-2.39.91/./glib/gstrfuncs.c:2846 from /tmp/apport_sandbox_sZK4AX/lib/x86_64-linux-gnu/libglib-2.0.so.0
 gtk_tree_view_get_model@plt ()

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sebastien Bacher (seb128)]

Not sure if that's the issue but valgrind shows those errors

==1528== Conditional jump or move depends on uninitialised value(s)
==1528== at 0x174D12BC: ag_auth_data_unref (ag-auth-data.c:185)
==1528== by 0x95F3AD4: ap_oauth_plugin_dispose (oauth-plugin.c:855)
==1528== by 0x49C6237: g_object_unref (gobject.c:3075)
==1528== by 0x95D6A00: cc_credentials_account_details_page_finalize (cc-credentials-account-details-page.c:2332)
==1528== by 0x49C62C7: g_object_unref (gobject.c:3112)
==1528== by 0x95DACD9: cc_credentials_accounts_page_finalize (cc-credentials-accounts-page.c:1048)
==1528== by 0x49C62C7: g_object_unref (gobject.c:3112)
==1528== by 0x49C82BE: g_object_run_dispose (gobject.c:1075)
==1528== by 0x4386430: gtk_widget_destroy (gtkwidget.c:4268)
==1528== by 0x42684BE: gtk_notebook_forall (gtknotebook.c:4457)
==1528== by 0x419987E: gtk_container_foreach (gtkcontainer.c:2154)
==1528== by 0x419A933: gtk_container_destroy (gtkcontainer.c:1403)
==1528== by 0x42735AD: gtk_notebook_destroy (gtknotebook.c:1711)
==1528== by 0x49C36B2: g_cclosure_marshal_VOID__VOID (gmarshal.c:85)
==1528== by 0x49C05A3: g_type_class_meta_marshal (gclosure.c:961)
==1528== by 0x49C19F1: g_closure_invoke (gclosure.c:768)
==1528== by 0x49D41A0: signal_emit_unlocked_R (gsignal.c:3667)
==1528== by 0x49DB962: g_signal_emit_valist (gsignal.c:3307)
==1528== by 0x49DBBF2: g_signal_emit (gsignal.c:3363)
==1528== by 0x4394A0F: gtk_widget_dispose (gtkwidget.c:11279)
==1528== by 0x49C82B6: g_object_run_dispose (gobject.c:1073)
==1528== by 0x4386430: gtk_widget_destroy (gtkwidget.c:4268)
==1528== by 0x4146DFE: gtk_bin_forall (gtkbin.c:171)
==1528== by 0x419987E: gtk_container_foreach (gtkcontainer.c:2154)
==1528== by 0x419A933: gtk_container_destroy (gtkcontainer.c:1403)
==1528== by 0x49C36B2: g_cclosure_marshal_VOID__VOID (gmarshal.c:85)
==1528== by 0x49C05A3: g_type_class_meta_marshal (gclosure.c:961)
==1528== by 0x49C19F1: g_closure_invoke (gclosure.c:768)
==1528== by 0x49D41A0: signal_emit_unlocked_R (gsignal.c:3667)
==1528== by 0x49DB962: g_signal_emit_valist (gsignal.c:3307)

[David Peter (peteypeter)]

I cannot reproduce this bug since official 14.04 release.

This bug report status should probably be changed.

[David Peter (peteypeter)]

I changed the status to opinion since I'm not aware of the process (sorry...)