Hi, The latest version of QEMU (qemu-kvm-ev-2.10.0-21.el7_5.3.1) from centos-virt repo doesn't have this patch: commit 68a9398261ca38979bbc2b7c89ed5bb044ccc9e6 Author: linzhecheng <linzhecheng at huawei.com> Date: Tue Nov 28 12:46:56 2017 +0800 qemu-thread: fix races on threads that exit very quickly I wonder how I can request to add it? I hit a core dump issue repeatedly, which I believe is fixed by this patch. While I observed it on an aarch64 machine, I think the issue is common on all arch types. I'd like to submit a bug report, but didn't find a category for centos-virt at https://Bugzilla.redhat.com (I suppose I should file bug against upstream, right?). The Virt-SIG wiki page seems to be outdated and doesn't contain information on this. Any suggestions? Thanks, Ray