Ubuntu
unity package

unity-active-plugins-safety-check crashed with SIGSEGV in ccsObjectGetInterface_()

Bug #1612146 reported by Marco Trevisan (Treviño) on 2016-08-11

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	unity (Ubuntu)	Triaged	Low	Andrea Azzarone

Bug Description

I forced things to crash by doing

sudo mv /usr/share/glib-2.0/schemas/org.compiz.* /tmp/
sudo glib-compile-schemas /usr/share/glib-2.0/schemas

Then restarted unity7 upstart job.

This is the stacktrace I got:

#0 ccsObjectGetInterface_ (object=object@entry=0x0, interface_type=6)
    at /build/compiz-J1Xv8e/compiz-0.9.12.2+16.04.20160801.3/compizconfig/libcompizconfig/src/main.c:184
#1 0x00007f037a3df87d in ccsGSettingsWrapperGetValue (wrapper=0x0, key=0x7f037a5f1160 "current-profile")
    at /build/compiz-J1Xv8e/compiz-0.9.12.2+16.04.20160801.3/compizconfig/gsettings/gsettings_backend_shared/ccs_gsettings_interface.c:19
#2 0x00007f037a5ea6df in getCurrentProfileName (compizconfigSettings=0x0)
    at /build/compiz-J1Xv8e/compiz-0.9.12.2+16.04.20160801.3/compizconfig/gsettings/src/gsettings.c:464
#3 initBackend (backend=0x1a1c700, context=0x1a1c6c0)
    at /build/compiz-J1Xv8e/compiz-0.9.12.2+16.04.20160801.3/compizconfig/gsettings/src/gsettings.c:483
#4 0x00007f037ff15f21 in ccsSetBackendDefault (context=0x1a1c6c0, name=0x1a21c80 "gsettings")
    at /build/compiz-J1Xv8e/compiz-0.9.12.2+16.04.20160801.3/compizconfig/libcompizconfig/src/main.c:1231
#5 0x00007f037ff17853 in initGeneralOptions (context=context@entry=0x1a1c6c0)
    at /build/compiz-J1Xv8e/compiz-0.9.12.2+16.04.20160801.3/compizconfig/libcompizconfig/src/main.c:272
#6 0x00007f037ff17a5a in ccsEmptyContextNew (screenNum=screenNum@entry=0,
    importFromFile=importFromFile@entry=0x7f037ff14a40 <ccsImportFromFile>,
    scanForProfiles=scanForProfiles@entry=0x7f037ff15540 <scanDirectoryForProfiles>, loader=loader@entry=0x1a1c5e0,
    config=0x1a1c650, object_interfaces=object_interfaces@entry=0x602100 <ccsDefaultInterfaceTable>)
    at /build/compiz-J1Xv8e/compiz-0.9.12.2+16.04.20160801.3/compizconfig/libcompizconfig/src/main.c:355
#7 0x00007f037ff18622 in ccsContextNew (screenNum=0, iface=0x602100 <ccsDefaultInterfaceTable>)
    at /build/compiz-J1Xv8e/compiz-0.9.12.2+16.04.20160801.3/compizconfig/libcompizconfig/src/main.c:616
#8 0x00000000004011e1 in main ()

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: unity 7.4.0+16.04.20160801.2-0ubuntu1 [origin: LP-PPA-ci-train-ppa-service-landing-007]
Uname: Linux 4.7.0-040700-generic x86_64
.tmp.unity_support_test.0:

.tmp.unity_support_test.1:

ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CrashDB: unity
CurrentDesktop: Unity
Date: Thu Aug 11 11:04:55 2016
DistUpgraded: Fresh install
DistroCodename: xenial
DistroVariant: ubuntu
ExecutablePath: /usr/lib/x86_64-linux-gnu/unity/unity-active-plugins-safety-check
GraphicsCard:
Intel Corporation Sky Lake Integrated Graphics [8086:1916] (rev 07) (prog-if 00 [VGA controller])
Subsystem: Lenovo Skylake Integrated Graphics [17aa:2233]
InstallationDate: Installed on 2016-05-02 (100 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160415)
MachineType: LENOVO 20F9CTO1WW
ProcCmdline: /usr/lib/x86_64-linux-gnu/unity/unity-active-plugins-safety-check
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.7.0-040700-generic root=UUID=328bf97f-143a-483c-8ca9-282e1bfbdf79 ro quiet splash vt.handoff=7
SegvAnalysis:
Segfault happened at: 0x7f037ff13d64 <ccsObjectGetInterface_+4>: mov 0x18(%rdi),%ecx
PC (0x7f037ff13d64) ok
source "0x18(%rdi)" (0x00000018) not located in a known VMA region (needed readable region)!
destination "%ecx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
ccsObjectGetInterface_ () from /usr/lib/x86_64-linux-gnu/libcompizconfig.so.0
ccsGSettingsWrapperGetValue () from /usr/lib/x86_64-linux-gnu/libcompizconfig_gsettings_backend.so
?? () from /usr/lib/x86_64-linux-gnu/compizconfig/backends/libgsettings.so
ccsSetBackendDefault () from /usr/lib/x86_64-linux-gnu/libcompizconfig.so.0
?? () from /usr/lib/x86_64-linux-gnu/libcompizconfig.so.0
Title: unity-active-plugins-safety-check crashed with SIGSEGV in ccsObjectGetInterface_()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
dmi.bios.date: 04/14/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: N1CET43W (1.11 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20F9CTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN1CET43W(1.11):bd04/14/2016:svnLENOVO:pn20F9CTO1WW:pvrThinkPadT460s:rvnLENOVO:rn20F9CTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20F9CTO1WW
dmi.product.version: ThinkPad T460s
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12.2+16.04.20160801.3-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.1
version.xserver-xorg-core: xserver-xorg-core 2:1.18.3-1ubuntu2.3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2
xserver.bootTime: Thu Aug 11 10:57:58 2016
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 1300
vendor LGD
xserver.version: 2:1.18.3-1ubuntu2.3

Tags: