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In a number of places in the bhyve driver, virObjectUnlock() is called with an arg without check if the arg is non-NULL, which could result in passing NULL value and a warning like: virObjectUnlock:340 : Object 0x0 ((unknown)) is not a virObjectLockable instance * src/bhyve/bhyve_driver.c (bhyveDomainGetInfo) (bhyveDomainGetState, bhyveDomainGetAutostart) (bhyveDomainSetAutostart, bhyveDomainIsActive) (bhyveDomainIsPersistent, bhyveDomainGetXMLDesc) (bhyveDomainUndefine, bhyveDomainLookupByUUID) (bhyveDomainLookupByName, bhyveDomainLookupByID) (bhyveDomainCreateWithFlags, bhyveDomainOpenConsole): Check if arg is not NULL before calling virObjectUnlock on it.
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>