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qemu: Avoid crash in qemuDomainCheckCPU with unknown host CPU

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When we don't have any information about host CPU (for example when
running on an aarch64 host), the virQEMUCapsGetHostModel would return
NULL.

Fixes: f928eb5fc80ca0ed7277f2513b63aed36c09d275
Fixes: https://gitlab.com/libvirt/libvirt/-/issues/747
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Tested-by: Jaroslav Suchanek <jsuchane@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Jiri Denemark 2025-02-18 11:24:32 +01:00
parent 08db3e8dc2
commit 43eae1b707
1 changed files with 1 additions and 0 deletions
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src/qemu/qemu_domain.c
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@ -11430,6 +11430,7 @@ qemuDomainCheckCPU(virArch arch,
/* Force compat check if the CPU model is not found in qemuCaps or
* we don't have host CPU data from QEMU */
if (!cpu->model ||
!hypervisorCPU ||
hypervisorCPU->fallback != VIR_CPU_FALLBACK_FORBID ||
virQEMUCapsGetCPUBlockers(qemuCaps, virtType,
cpu->model, &blockers) < 0)