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Bug
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Resolution: Cannot Reproduce
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Undefined
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None
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rhel-10.0
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None
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None
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Important
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CustomerScenariosInitiative
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rhel-sst-virtualization
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ssg_virtualization
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None
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False
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None
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None
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None
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None
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None
Description of problem:
Windows 2025 vm gets BSOD after hotplugging multi vcpu.
Version-Release number of selected component (if applicable):
Host:
kernel-6.12.0-31.el10.x86_64
qemu-kvm-9.1.0-6.el10
edk2-ovmf-20241117-1.el10.noarch
swtpm-0.9.0-4.el10.x86_64
CPU: Intel(R) Xeon(R) Silver 4110 CPU @ 2.10GHz (Skylake-Server)
Guest: win2025
How reproducible is this bug?:
3/5
Steps to reproduce
1. boot a win2025 guest, win2025_cpu-hotplug.sh
# /usr/bin/swtpm socket --ctrl type=unixio,path=/root/avocado/data/avocado-vt/swtpm/avocado-vt-vm1_tpm0_swtpm.sock,mode=0600 --tpmstate dir=/root/avocado/data/avocado-vt/swtpm/avocado-vt-vm1_tpm0_state,mode=0600 --terminate --tpm2 --log file=/root/avocado/job-results/job-2024-12-10T14.39-f6b1131/test-results/70-Host_RHEL.m10.u0.ovmf.qcow2.virtio_scsi.up.virtio_net.Guest.Win2025.x86_64.io-github-autotest-qemu.cpu_device_hotpluggable.hotplug.multi_vcpu.with_reboot.shell_reboot.q35/vtpm_avocado-vt-vm1_tpm0_swtpm.log & # sh win2025_cpu-hotplug.sh
2. hotplug 4 vcpus
# telnet localhost 6666
{"execute": "qmp_capabilities", "id": "yYxfLjJz"}
{"execute": "device_add", "arguments": {"id": "vcpu1", "driver": "Skylake-Server-x86_64-cpu", "socket-id": 1, "die-id": 0, "core-id": 0, "thread-id": 0}, "id": "Hums5ngF"}
{"execute": "device_add", "arguments": {"id": "vcpu2", "driver": "Skylake-Server-x86_64-cpu", "socket-id": 1, "die-id": 0, "core-id": 1, "thread-id": 0}, "id": "kQOUkxxd"}
{"execute": "device_add", "arguments": {"id": "vcpu3", "driver": "Skylake-Server-x86_64-cpu", "socket-id": 1, "die-id": 0, "core-id": 2, "thread-id": 0}, "id": "HksYcs0g"}
{"execute": "device_add", "arguments": {"id": "vcpu4", "driver": "Skylake-Server-x86_64-cpu", "socket-id": 1, "die-id": 0, "core-id": 3, "thread-id": 0}, "id": "UroaYb99"}
Expected results
cpu hotplug successfully
Actual results
Hit BSOD, stop code SYSTEM THREAD EXCEPTION NOT HANDLED
