The Debian (testing) version of Python2.7.11 does also exhibit the problem. I already told the Debian maintainer, Matthias Klose <[email protected]>, via email because I wanted to know exactly where he prefers to have it posted. He has already contributed here.
@Matthias: The issue remains open. Please advise on how I should proceed concerning Debian. In the mean time, I have attempted to narrow the debian/patches/* files down so I can find which patch produces the problem. But the patches quite heavily depend on each other, so I have not yet succeeded in producing a debianized build which does not have the problem. Still working at that. The bug can be traced in gdb by executing the testing setup, then saying "gdb ./zope-virtualenv/bin/python2.7-dbg" and in gdb: "run ./zope-virtualenv/bin/runzope -C ./zope-virtualenv/instance/etc/zope.conf". After sending the curl commands to produce the error, gdb exits with the above mentioned error: "Fatal Python error: ../Objects/descrobject.c:10 object at 0x1572240 has negative ref count -1 Program received signal SIGABRT, Aborted." Then the stack trace can be inspected. My knowledge of Python's memory management is not deep enough to really make any sense of what I'm seeing, other than it looks remotely like a "double free". I'll try to contribute more. Anyone with better understanding of Python internals, your help is much appreciated! -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to python2.7 in Ubuntu. https://bugs.launchpad.net/bugs/1580577 Title: python2.7 crashes with SegFault when running Zope Status in python2.7 package in Ubuntu: Confirmed Bug description: Source package / Package: python2.7_2.7.11-7ubuntu1 System: Description: Ubuntu 16.04 LTS Release: 16.04 This is a bug report originating from the findings documented in https://github.com/zopefoundation/Zope/issues/56 The expected behaviour is this: - Upon installing Zope2 in a virtualenv a default instance should work with no issues. What happens instead: - The freshly installed Zope instance causes Python to SegFault after only a few requests. But Python should never SegFault. The following program produces the error: #!/bin/bash set -e # Call this testing script with an argument "setup" for the first time # to build the testing case # # After that, the script only performs the test as described below. # # Requirements: apt-get install virtualenv python2.7-dbg # # This script needs internet access when running. # The python version to test: python=/usr/bin/python2.7-dbg # This part builds the testing environment if [ "$1" == "setup" ] ; then # Virtual environment with the chosen python virtualenv --python ${python} --no-site-packages zope-virtualenv cd zope-virtualenv # Basic Zope installation ./bin/easy_install -i http://download.zope.org/Zope2/index/2.13.24 Zope2 # Simplest possible Zope instance ./bin/mkzopeinstance --dir instance --user admin:admin cd .. fi # THE TEST # Run Zope instance in the background zope-virtualenv/instance/bin/runzope & # Give Zope some time to start up sleep 3 # Call a few management URLs, nothing too fancy... urls=" http://admin:admin@localhost:8080/Control_Panel/manage_main http://admin:admin@localhost:8080/Control_Panel/Database/main/manage_main http://admin:admin@localhost:8080/Control_Panel/Database/manage_main http://admin:admin@localhost:8080/Control_Panel/Database/main/manage_activity http://admin:admin@localhost:8080/manage http://admin:admin@localhost:8080/acl_users/manage_main http://admin:admin@localhost:8080/acl_users/manage_access " while true ; do for url in ${urls} ; do echo ${url} curl -s $url -o /dev/null done done # This test fails after about 10 requests with # Fatal Python error: ../Objects/descrobject.c:10 object at 0x??? has negative ref count -1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/python2.7/+bug/1580577/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
