Description of problem: I tried to install xen domU using libvirt. (virt-install -d -n TestVM1 -r 512 --vcpus=1 --disk /mnt/d/domU-test.img --nographics -p -l "http://mirror.yandex.ru/centos/7.0.1406/os/x86_64" --extra-args="text console=com1 utf8 console=hvc0" ) libvirt-daemon-driver-xen.x86_64 | 1.2.9.2-1.fc21 libvirt-daemon-xen.x86_64 | 1.2.9.2-1.fc21 libvirt.x86_64 | 1.2.9.2-1.fc21 xen.x86_64 | 4.4.1-12.fc21 xen-hypervisor.x86_64 | 4.4.1-12.fc21 Version-Release number of selected component: libvirt-daemon-1.2.9.2-1.fc21 Additional info: reporter: libreport-2.3.0 backtrace_rating: 4 cmdline: /usr/sbin/libvirtd crash_function: sigchld_installhandler_core executable: /usr/sbin/libvirtd kernel: 3.18.8-201.fc21.x86_64 runlevel: N 5 type: CCpp uid: 0 Truncated backtrace: Thread no. 1 (10 frames) #4 sigchld_installhandler_core at libxl_fork.c:347 #5 libxl__sigchld_needed at libxl_fork.c:406 #6 perhaps_sigchld_needed at libxl_fork.c:448 #7 libxl_childproc_setmode at libxl_fork.c:656 #8 libxlDomainObjPrivateInitCtx at libxl/libxl_domain.c:776 #9 libxlDomainStart at libxl/libxl_domain.c:1155 #10 libxlDomainCreateXML at libxl/libxl_driver.c:660 #11 virDomainCreateXML at libvirt.c:1900 #12 remoteDispatchDomainCreateXML at remote_dispatch.h:3318 #13 remoteDispatchDomainCreateXMLHelper at remote_dispatch.h:3298
Created attachment 1002015 [details] File: backtrace
Created attachment 1002016 [details] File: build_ids
Created attachment 1002017 [details] File: cgroup
Created attachment 1002018 [details] File: core_backtrace
Created attachment 1002019 [details] File: dso_list
Created attachment 1002020 [details] File: environ
Created attachment 1002021 [details] File: limits
Created attachment 1002022 [details] File: maps
Created attachment 1002023 [details] File: open_fds
Created attachment 1002024 [details] File: proc_pid_status
Created attachment 1002025 [details] File: var_log_messages
This message is a reminder that Fedora 21 is nearing its end of life. Approximately 4 (four) weeks from now Fedora will stop maintaining and issuing updates for Fedora 21. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as EOL if it remains open with a Fedora 'version' of '21'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version. Thank you for reporting this issue and we are sorry that we were not able to fix it before Fedora 21 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora, you are encouraged change the 'version' to a later Fedora version prior this bug is closed as described in the policy above. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete.
The only faf hits for this were in a narrow time window on f21 months ago, so presumably this is not an issue on more recent fedora