New submission from Bohuslav "Slavek" Kabrda: test_faulthandler.test_register_chain fails on some 64bit architectures (arm8, ppc64) with kernel >= 3.10:
====================================================================== FAIL: test_register_chain (__main__.FaultHandlerTests) ---------------------------------------------------------------------- Traceback (most recent call last): File "/builddir/build/BUILD/Python-3.3.2/Lib/test/test_faulthandler.py", line 588, in test_register_chain self.check_register(chain=True) File "/builddir/build/BUILD/Python-3.3.2/Lib/test/test_faulthandler.py", line 572, in check_register self.assertEqual(exitcode, 0) AssertionError: -11 != 0 I created a minimal reproducer (reproduces the issue on 3.3, 3.4 and dev) of this segfault (attached). When run with GC assertions turned on, Python fails with: python: /builddir/build/BUILD/Python-3.3.2/Modules/gcmodule.c:332: update_refs: Assertion `gc->gc.gc_refs == (-3)\' failed. We experienced this issue when building Python 3.3 on Fedora's arm8 builder [1], it seems that opensuse have experienced the same failure on ppc64 [2] and ubuntu has a similar issue in their 64bit arm builds [3]. It seems that this may be caused by a change in kernel, since it's only reproducible on kernel >= 3.10. A nice explanation of what goes on and how the problem can be narrowed down is at the opensuse bug report [4], this is basically where I got stuck with this problem, too. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1045193 [2] https://bugzilla.novell.com/show_bug.cgi?id=831629 [3] https://bugs.launchpad.net/ubuntu/+source/python3.4/+bug/1264354 [4] https://bugzilla.novell.com/show_bug.cgi?id=831629#c15 ---------- components: Tests files: test_register_chain_segfault_reproducer.py messages: 215365 nosy: bkabrda priority: normal severity: normal status: open title: test_faulthandler.test_register_chain fails on 64bit ppc/arm with kernel >= 3.10 versions: Python 3.3, Python 3.4, Python 3.5 Added file: http://bugs.python.org/file34699/test_register_chain_segfault_reproducer.py _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue21131> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com