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729530749e
This patch fixes a segmentation fault when creating new virtual machines using QEMU. The segmentation fault is caused by commit f41830680e40d3ec845cefd25419bd87414b9ccf and commit cbb6ec42e2447d7920b30d66923b2a2b2670133b. In virQEMUCapsProbeQMPMachineTypes, when copying machines to qemuCaps, "none" is skipped. Therefore, the value of i and "qemuCaps->nmachineTypes - 1" do not always match. However, defIdx value (used to call virQEMUCapsSetDefaultMachine) is set using the value in i when the array elements are in qemuCaps->nmachineTypes - 1. So, when libvirt tries to create virtual machines using the default machine type, qemuCaps->machineTypes[defIdx] is accessed and since the defIdx is NULL, it results in segmentation fault. Signed-off-by: Yudai Yamagishi <yummy@sfc.wide.ad.jp> Signed-off-by: Jiri Denemark <jdenemar@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>