unity-system-compositor crashed with SIGSEGV in mir::compositor::DefaultDisplayBufferCompositor::composite()

[Stuart Langridge]

Machine locked up: on reboot, this happened.

Possibly related: Xorg.0.log showed errors (file attached). I disabled Mir temporarily and rebooted to get an X session again. The problem may be nothing to do with Mir, of course!

ProblemType: Crash
DistroRelease: Ubuntu 13.10
Package: unity-system-compositor 0.0.1+13.10.20130903-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-5.11-generic 3.11.0
Uname: Linux 3.11.0-5-generic x86_64
ApportVersion: 2.12.1-0ubuntu3
Architecture: amd64
CrashCounter: 1
Date: Tue Sep 10 00:52:01 2013
ExecutablePath: /usr/sbin/unity-system-compositor
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:3975]
InstallationDate: Installed on 2011-12-11 (638 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111211)
MarkForUpload: True
ProcCmdline: /usr/sbin/unity-system-compositor --from-dm-fd 10 --to-dm-fd 13 --vt 7
ProcEnviron:

SegvAnalysis:
 Segfault happened at: 0x7fea2c000158: add %rax,(%rax)
 PC (0x7fea2c000158) in non-executable VMA region: 0x7fea2c000000-0x7fea2f8d1000 rw-p None
 source "%rax" ok
 destination "(%rax)" (0x7fea2c000138) ok
 Stack memory exhausted (SP below stack segment)
SegvReason: executing writable VMA None
Signal: 11
SourcePackage: unity-system-compositor
StacktraceTop:
 ?? ()
 mir::compositor::DefaultDisplayBufferCompositor::composite() () from /usr/lib/x86_64-linux-gnu/libmirserver.so.1
 std::thread::_Impl<std::_Bind_simple<std::reference_wrapper<mir::compositor::CompositingFunctor> ()> >::_M_run() () from /usr/lib/x86_64-linux-gnu/libmirserver.so.1
 ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
 start_thread (arg=0x7fea53fff700) at pthread_create.c:311
Title: unity-system-compositor crashed with SIGSEGV in mir::compositor::DefaultDisplayBufferCompositor::composite()
UnitySystemCompositorLog:
 dm_connection_start
 set_active_session '0'
 set_active_session
 terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<std::runtime_error> >'
   what(): Failed to set DRM crtc
UpgradeStatus: Upgraded to saucy on 2013-09-05 (4 days ago)
UserGroups:

modified.conffile..etc.lightdm.lightdm.conf.d.10.unity.system.compositor.conf: [modified]
mtime.conffile..etc.lightdm.lightdm.conf.d.10.unity.system.compositor.conf: 2013-09-10T01:01:13.861947
version.libdrm: libdrm2 2.4.46-1
version.lightdm: lightdm 1.7.13-0ubuntu1
version.mesa: libegl1-mesa-dev N/A

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 mir::compositor::DefaultDisplayBufferCompositor::composite (this=0x7fea1403ad90) at /build/buildd/mir-0.0.10+13.10.20130903/src/server/compositor/default_display_buffer_compositor.cpp:105
 operator() (this=0xeb78c0) at /build/buildd/mir-0.0.10+13.10.20130903/src/server/compositor/multi_threaded_compositor.cpp:94
 __invoke<mir::compositor::CompositingFunctor> (__f=...) at /usr/include/c++/4.8/functional:234
 operator()<> (this=<optimized out>) at /usr/include/c++/4.8/functional:467

[Daniel van Vugt (vanvugt)]

I can't see what failed, but it was in mir::compositor::DefaultDisplayBufferCompositor::composite().

Wait and see if it reoccurs I guess.

[Launchpad Janitor (janitor)]

[Expired for Mir because there has been no activity for 60 days.]