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This patch is in relation to Bug 966449: https://bugzilla.redhat.com/show_bug.cgi?id=966449 This is a patch addressing the coredump. Thread 1 must be calling nwfilterDriverRemoveDBusMatches(). It does so with nwfilterDriverLock held. In the patch below I am now moving the nwfilterDriverLock(driverState) further up so that the initialization, which seems to either take a long time or is entirely stuck, occurs with the lock held and the shutdown cannot occur at the same time. Remove the lock in virNWFilterDriverIsWatchingFirewallD to avoid double-locking.
LibVirt : simple API for virtualization
Libvirt is a C toolkit to interact with the virtualization capabilities
of recent versions of Linux (and other OSes). It is free software
available under the GNU Lesser General Public License. Virtualization of
the Linux Operating System means the ability to run multiple instances of
Operating Systems concurrently on a single hardware system where the basic
resources are driven by a Linux instance. The library aim at providing
long term stable C API initially for the Xen paravirtualization but
should be able to integrate other virtualization mechanisms if needed.
Daniel Veillard <veillard@redhat.com>