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Michal Privoznik
55576d3512
virQEMUCapsInitQMP: Don't dispose locked @vm
When creating qemu capabilities, a dummy virDomainObj is created just because our monitor code expects that. However, the object is created locked already. Then, under cleanup label, we simply unref the object which results in whole domain object to be disposed. The object lock is destroyed subsequently, but hey - it's still locked: ==24845== Thread #14's call to pthread_mutex_destroy failed ==24845== with error code 16 (EBUSY: Device or resource busy) ==24845== at 0x4C3024E: pthread_mutex_destroy (in /usr/lib64/valgrind/vgpreload_helgrind-amd64-linux.so) ==24845== by 0x531F72E: virMutexDestroy (virthread.c:83) ==24845== by 0x5302977: virObjectLockableDispose (virobject.c:237) ==24845== by 0x5302A89: virObjectUnref (virobject.c:265) ==24845== by 0x1DD37866: virQEMUCapsInitQMP (qemu_capabilities.c:3397) ==24845== by 0x1DD37CC6: virQEMUCapsNewForBinary (qemu_capabilities.c:3481) ==24845== by 0x1DD381E2: virQEMUCapsCacheLookup (qemu_capabilities.c:3609) ==24845== by 0x1DD30F8A: virQEMUCapsInitGuest (qemu_capabilities.c:744) ==24845== by 0x1DD31889: virQEMUCapsInit (qemu_capabilities.c:1020) ==24845== by 0x1DD7DD36: virQEMUDriverCreateCapabilities (qemu_conf.c:888) ==24845== by 0x1DDC57C0: qemuStateInitialize (qemu_driver.c:803) ==24845== by 0x53DC743: virStateInitialize (libvirt.c:777) ==24845== Signed-off-by: Michal Privoznik <mprivozn@redhat.com> (cherry picked from commit 954427c35477752a4ef1789035f298fc9e7287e9)
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>
Description
Libvirt provides a portable, long term stable C API for managing the
virtualization technologies provided by many operating systems. It
includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware
vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER
Hypervisor.
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