[libvirt] libvirt 3.5.0 locks

Hi. I'm testing libvirt 3.5.0 and have many issues like this: Jul 14 09:47:25 cn25 libvirtd[18820]: 2017-07-14 06:47:25.598+0000: 18841: error : qemuDomainObjBeginJobInternal:3872 : Timed out during operation: cannot acquire state change lock (held by remoteDispatchConnectGetAllDomainStats) Jul 14 09:47:25 cn25 libvirtd[18820]: 2017-07-14 06:47:25.598+0000: 18841: warning : qemuDomainObjBeginJobInternal:3860 : Cannot start job (query, none) for domain 147565; current job is (query, none) owned by (18828 remoteDispatchConnectGetAllDomainStats, 0 <null>) for (53670s, 0s) Jul 14 09:46:55 cn25 libvirtd[18820]: 2017-07-14 06:46:55.576+0000: 18836: error : virNetDevTapInterfaceStats:751 : internal error: /proc/net/dev: Interface not found Jul 14 09:46:55 cn25 libvirtd[18820]: 2017-07-14 06:46:55.542+0000: 18832: warning : qemuGetProcessInfo:1428 : cannot parse process status data Jul 14 09:46:31 cn25 libvirtd[18820]: 2017-07-14 06:46:31.050+0000: 18838: warning : qemuGetProcessInfo:1428 : cannot parse process status data Domain in status in shutdown as i see tap device already removed from the system, so virNetDevTapInterfaceStats says right info. My question - why lock now released and why only libvirt restart can helps in this case -- Vasiliy Tolstov, e-mail: v.tolstov(a)selfip.ru