python2.7 crashed with SIGSEGV in createClassType()

[Andreas Moog]

Crash happens reproducibly while building guiqwt 2.1.6-2:

Running Sphinx v1.0.8
loading pickled environment... not yet created
building [html]: targets for 8 source files that are out of date
updating environment: 8 added, 0 changed, 0 removed
dh_auto_build: python setup.py build --force died with signal 11
make: *** [build] Error 255
dpkg-buildpackage: error: debian/rules build gave error exit status 2

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: python2.7-minimal 2.7.2-13ubuntu4
ProcVersionSignature: Ubuntu 3.2.0-15.24-generic 3.2.5
Uname: Linux 3.2.0-15-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Sun Feb 12 11:20:44 2012
ExecutablePath: /usr/bin/python2.7
InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Release amd64 (20110426.1)
ProcCmdline: python setup.py build --force
SegvAnalysis:
 Segfault happened at: 0x2afbd8690e28: addq $0x1,(%rax)
 PC (0x2afbd8690e28) ok
 source "$0x1" ok
 destination "(%rax)" (0x00000000) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: python2.7
StacktraceTop:
 ?? () from /usr/lib/python2.7/dist-packages/sip.so
 ?? () from /usr/lib/python2.7/dist-packages/sip.so
 initQwt () from /usr/lib/python2.7/dist-packages/PyQt4/Qwt5/Qwt.so
 _PyImport_LoadDynamicModule ()
 ?? ()
Title: python2.7 crashed with SIGSEGV in initQwt()
UpgradeStatus: Upgraded to precise on 2011-11-18 (85 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare sbuild sudo

[Apport retracing service (apport)]

StacktraceTop:
 createClassType (client=0x2afbe4f7ddb0, ctd=0x2afbe4f980f0, mod_dict=Traceback (most recent call last):
 sip_api_init_module (client=0x2afbe4f7ddb0, mod_dict=Traceback (most recent call last):
 initQwt () at tmp-qwt5qt4/sipQwtcmodule.cpp:3583
 _PyImport_LoadDynamicModule ()
 import_submodule ()

[Launchpad Janitor (janitor)]

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