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https://bugzilla.redhat.com/show_bug.cgi?id=1033061 Currently, initialization of drivers is done in a separate thread. This is done for several reasons: a driver that is initialized may require running event loop, it may take ages to initialize driver (e.g. due to autostarting domains). While the thread is spawn and run, the main() continues its execution. However, if something goes bad, or the event loop is just exited (e.g. due to a --timeout or SIGINT) we try to cleanup all the drivers. So we have two threads running Initialize() and Cleanup() concurrently. This may result in accessing stale pointers - e.g. netcf driver will free() itself in stateCleanup callback, while the init thread may come, open a dummy connection in order to autostart some domains and voilà: do_open() iterates over interface drivers and accesses stale netcf driver. The fix consists in not running stateCleanup if the init thread is still running. Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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>