What were you trying to do that didn't work?

Migrate VM from (to) RHEL-10.1 to (from) RHEL-10.2

What is the impact of this issue to you?

Please provide the package NVR for which the bug is seen:

10.2 -> 10.1 -> 10.2 FAILED

Host: ampere-one-x-07.khw.eng.bos2.dc.redhat.com:
kernel kernel-6.12.0-157.1754_2157644458.el10.aarch64(+64k)
libvirt libvirt-11.9.0-1.el10.aarch64
qemu-kvm qemu-kvm-10.1.0-5.el10.aarch64

Host: ampere-one-x-08.khw.eng.bos2.dc.redhat.com:
kernel kernel-6.12.0-124.13.1.el10_1.aarch64(+64k)
libvirt libvirt-11.5.0-4.1.el10_1.aarch64
qemu-kvm qemu-kvm-10.0.0-14.el10_1.2.aarch64

https://libvirt-rhos-jenkins-product.hosted.upshift.rdu2.redhat.com/job/libvirt-RHEL-10.2-runtest-aarch64-acceptance-cross_migration_ampere_one_x/15/testReport/

How reproducible is this bug?:

100%

Steps to reproduce

1. Start the VM
2. Start migration:  migrate --live --verbose --domain avocado-vt-vm1 --desturi qemu+ssh://10.26.1.145/system

Expected results: Migration done, VM running on dest

Actual results:

Migration fails: 

error: operation failed: job 'migration out' failed: Unable to read from socket: Connection reset by peer

avocado-vt-vm1.log on source:

2025-11-21T11:51:31.121620Z qemu-kvm: Unable to shutdown socket: Transport endpoint is not connected
2025-11-21T11:51:31.121803Z qemu-kvm: Unable to write to socket: Connection reset by peer
2025-11-21T11:51:31.964661Z qemu-kvm: terminating on signal 15 from pid 66291 (/usr/sbin/virtqemud)
2025-11-21 11:51:32.364+0000: shutting down, reason=destroyed
 

avocado-vt-vm1.log on Dest:

2025-11-21T11:51:31.112663Z qemu-kvm: Could not set register op0:3 op1:0 crn:0 crm:6 op2:1 to 10111100211002 (is 10111101211052)
2025-11-21T11:51:31.112870Z qemu-kvm: error while loading state for instance 0x0 of device 'cpu'
2025-11-21T11:51:31.113006Z qemu-kvm: Could not set register op0:3 op1:0 crn:0 crm:6 op2:1 to 10111100211002 (is 10111101211052)
2025-11-21T11:51:31.113084Z qemu-kvm: Failed to put registers after init: Invalid argument
2025-11-21 11:51:31.514+0000: shutting down, reason=crashed