2752a67826
After v6.5.0-rc1~148 we started to rectify vCPU to guest NUMA assignment - if there is a vCPU not assigned to any guest NUMA node it is automatically assigned to node #0. A month later I've made it possible to define guest NUMA nodes without vCPUs (v6.6.0-rc1~250) - this is needed because of HMAT. As a part of that I fixed all callers of virDomainNumaGetNodeCpumask() (which returns a bitmap of vCPUs for given node) to handle case when NULL is returned (i.e. no vCPUs assigned to given node). But of course my patch was written before aforementioned vCPU rectify patch but merged afterwards and hence I missed the virDomainNumaFillCPUsInNode() caller. And because we are dealing with a NULL pointer, of course this leads to a crash. Just try to define a domain with at least two NUMA nodes and no vCPU assignment to any of the nodes. Fixes: a26f61ee0cffa421b87ef568002b684dd8025432 Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1880289 Signed-off-by: Michal Privoznik <mprivozn@redhat.com> Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Libvirt API for virtualization
Libvirt provides a portable, long term stable C API for managing the virtualization technologies provided by many operating systems. It includes support for QEMU, KVM, Xen, LXC, bhyve, Virtuozzo, VMware vCenter and ESX, VMware Desktop, Hyper-V, VirtualBox and the POWER Hypervisor.
For some of these hypervisors, it provides a stateful management daemon which runs on the virtualization host allowing access to the API both by non-privileged local users and remote users.
Layered packages provide bindings of the libvirt C API into other languages including Python, Perl, PHP, Go, Java, OCaml, as well as mappings into object systems such as GObject, CIM and SNMP.
Further information about the libvirt project can be found on the website:
License
The libvirt C API is distributed under the terms of GNU Lesser
General Public License, version 2.1 (or later). Some parts of the code
that are not part of the C library may have the more restrictive GNU
General Public License, version 2.0 (or later). See the files
COPYING.LESSER and COPYING for full license
terms & conditions.
Installation
Instructions on building and installing libvirt can be found on the website:
https://libvirt.org/compiling.html
Contributing
The libvirt project welcomes contributions in many ways. For most components the best way to contribute is to send patches to the primary development mailing list. Further guidance on this can be found on the website:
https://libvirt.org/contribute.html
Contact
The libvirt project has two primary mailing lists:
- libvirt-users@redhat.com (for user discussions)
- libvir-list@redhat.com (for development only)
Further details on contacting the project are available on the website: