gnome-tweak-tool crashed with SIGSEGV in sem_post()

[Lockal]

gnome-tweak-tool crashed right after start, but the next run was ok.

Also crashes in the same function when enabling extensions from https://extensions.gnome.org/ while having gnome-tweak-tool opened on extensions tab.

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: gnome-tweak-tool 3.10.0-0ubuntu1~saucy1 [origin: LP-PPA-gnome3-team-gnome3-staging]
ProcVersionSignature: Ubuntu 3.11.0-11.17-generic 3.11.3
Uname: Linux 3.11.0-11-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.12.5-0ubuntu1
Architecture: amd64
Date: Sun Oct 6 13:34:36 2013
ExecutablePath: /usr/bin/gnome-tweak-tool
InstallationDate: Installed on 2012-02-05 (608 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120201.1)
InterpreterPath: /usr/bin/python2.7
MarkForUpload: True
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/gnome-tweak-tool
SegvAnalysis:
 Segfault happened at: 0x7f3b9b6e81c0 <sem_post>: mov (%rdi),%eax
 PC (0x7f3b9b6e81c0) ok
 source "(%rdi)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: gnome-tweak-tool
StacktraceTop:
 sem_post () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_post.S:33
 PyThread_release_lock ()
 g_object_ref (_object=0x309f8d0) at /build/buildd/glib2.0-2.38.0/./gobject/gobject.c:3069
 g_settings_backend_dispatch_signal (backend=backend@entry=0x229e150, function_offset=function_offset@entry=0, name=name@entry=0x7f3b8c013860 "/org/gnome/desktop/input-sources/current", data1=data1@entry=0x0, data1_copy=0x7f3b98cd7790 <pointer_id>, data1_copy@entry=0x0, data1_free=0x7f3b98cd77a0 <pointer_ignore>, data1_free@entry=0x0, data2=data2@entry=0x0) at /build/buildd/glib2.0-2.38.0/./gio/gsettingsbackend.c:329
 g_settings_backend_changed (backend=0x229e150, key=0x7f3b8c013860 "/org/gnome/desktop/input-sources/current", origin_tag=0x0) at /build/buildd/glib2.0-2.38.0/./gio/gsettingsbackend.c:400
Title: gnome-tweak-tool crashed with SIGSEGV in sem_post()
UpgradeStatus: Upgraded to saucy on 2013-05-19 (139 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Ubuntu GNOME (ug-bot)]

StacktraceTop:
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[Romano Giannetti (romano-giannetti)]

Could https://bugs.launchpad.net/ubuntu/+source/gnome-tweak-tool/+bug/1245304 be a duplicate of this one? If yes, there are hints there on how to trigger it at will...

[Romano Giannetti (romano-giannetti)]

Probably the main bug is https://bugs.launchpad.net/ubuntu/+source/gnome-tweak-tool/+bug/1228626

[Lockal (lockal)]

Yes, looks very similar, so marking this as a duplicate.

[Launchpad Janitor (janitor)]

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