** Description changed: Some applications get stuck in a deadlock when utilizing glib. One of examples is lrmadmin, when connecting to lrmd. Upstream provided a fix for this bug and Ubuntu's version 11.04 and newer do not have this issue. Ubuntu 10.04 and 10.10 do not contain the fix. Upstream fix: + https://mail.gnome.org/archives/commits-list/2010-November/msg01816.html - https://mail.gnome.org/archives/commits-list/2010-November/msg01816.html + [Impact] + Remove potential and demonstratable deadlocks in glib code. + + [Test Case] + * Install lucid + * add ubuntu-ha-maintainers lucid ppa and update repo: + apt-add-repository ppa:ubuntu-ha-maintainers/lucid-cluster ; apt-get update + * Install pacemaker: + apt-get -y install pacemaker + * Enable corosync (/etc/default/corosync) and start it: + sed -i -e 's/START=no/START=yes/' /etc/default/corosync + service corosync start + * Open two client->server connections: + lrmadmin -C ; lrmadmin -C + It deadlocks on second run (it actually never finishes the first run). + + * Kill lrmd and stop corosync: + killall -9 lrmd ; service corosync stop + * install fix + apt-get update && apt-get install libglib2.0-0 + * Start corosync: + service corosync start + * Run the test again: + lrmadmin -C ; lrmadmin -C ; lrmadmin -C ; lrmadmin -C + * It doesn't deadlock. + + [Regression Potential] + Regression potential should be very small. This change is still present in almost unmodified upstream code to this day (g_source_unref_internal of glib/gmain.c). The upstream trunk commit is at http://git.gnome.org/browse/glib/commit/?id=b358202856682e5cdefb0b4b8aaed3a45d9a85fa .
** Summary changed: - Deadlocks in main loop + [SRU] Deadlocks in main loop -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to glib2.0 in Ubuntu. https://bugs.launchpad.net/bugs/887946 Title: [SRU] Deadlocks in main loop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glib2.0/+bug/887946/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
