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Steps to reproduce this problem (vm1 is not running): for i in `seq 50`; do virsh managedsave vm1& done; killall virsh Pre-patch, virNetServerClientClose could end up setting client->sock to NULL prior to other cleanup functions trying to use client->sock. This fixes things by checking for NULL in more places, and by deferring the cleanup until after all queued messages have been served. * src/rpc/virnetserverclient.c (virNetServerClientRegisterEvent) (virNetServerClientGetFD, virNetServerClientIsSecure) (virNetServerClientLocalAddrString) (virNetServerClientRemoteAddrString): Check for closed socket. (virNetServerClientClose): Rearrange close sequence. Analysis from Wen Congyang.
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>