unity8 crashed with SIGSEGV in __GI___pthread_mutex_lock()

[Thibaut Brandscheid]

I tried to start unity8 in VirtualBox typing 'unity(' into the terminal.

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: unity8 7.84+14.04.20140221-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-10.30-generic 3.13.3
Uname: Linux 3.13.0-10-generic x86_64
ApportVersion: 2.13.2-0ubuntu5
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Feb 22 00:54:41 2014
ExecutablePath: /usr/bin/unity8
InstallationDate: Installed on 2014-02-11 (10 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140211)
ProcCmdline: unity8
SegvAnalysis:
 Segfault happened at: 0x7f15d4192414 <__GI___pthread_mutex_lock+4>: mov 0x10(%rdi),%esi
 PC (0x7f15d4192414) ok
 source "0x10(%rdi)" (0x000020d8) not located in a known VMA region (needed readable region)!
 destination "%esi" ok
 Stack memory exhausted (SP below stack segment)
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity8
StacktraceTop:
 __GI___pthread_mutex_lock (mutex=0x0) at ../nptl/pthread_mutex_lock.c:66
 ?? () from /usr/lib/x86_64-linux-gnu/dri/vboxvideo_dri.so
 ?? () from /usr/lib/x86_64-linux-gnu/dri/vboxvideo_dri.so
 ?? () from /usr/lib/x86_64-linux-gnu/dri/vboxvideo_dri.so
 start_thread (arg=0x7f15a810a700) at pthread_create.c:312
Title: unity8 crashed with SIGSEGV in __GI___pthread_mutex_lock()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

StacktraceTop:
 __GI___pthread_mutex_lock (mutex=0x0) at ../nptl/pthread_mutex_lock.c:66
 stubSyncThreadProc (ThreadSelf=0x1c91020, pvUser=<optimized out>) at /build/buildd/virtualbox-4.3.6-dfsg/src/VBox/Additions/common/crOpenGL/load.c:898
 rtThreadMain (pThread=0x1c91020, NativeThread=<optimized out>, pszThreadName=<optimized out>) at /build/buildd/virtualbox-4.3.6-dfsg/src/VBox/Runtime/common/misc/thread.cpp:712
 rtThreadNativeMain (pvArgs=0x1c91020) at /build/buildd/virtualbox-4.3.6-dfsg/src/VBox/Runtime/r3/posix/thread-posix.cpp:324
 start_thread (arg=0x7f15a810a700) at pthread_create.c:312

[Michał Sawicz (saviq)]

I'm afraid this very much looks like a vbox issue, not a unity8 one. Adding affects: virtualbox pending further investigation.