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Wen Congyang
ff68d6eeb5
When qemu cannot start, we may call qemuProcessStop() twice. We have check whether the vm is running at the beginning of qemuProcessStop() to avoid libvirt deadlock. We call qemuProcessStop() with driver and vm locked. It seems that we can avoid libvirt deadlock. But unfortunately we may unlock driver and vm in the function qemuProcessKill() while vm->def->id is not -1. So qemuProcessStop() will be run twice, and monitor will be freed unexpectedly. So we should set vm->def->id to -1 at the beginning of qemuProcessStop().
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>