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@@ -0,0 +1,36 @@
+id = 1576
+title = "Migration from v8.0.0-rc2 to v7.2.0 with pcie-root-port device fails"
+state = "closed"
+created_at = "2023-04-04T09:03:32.271Z"
+closed_at = "2023-08-08T12:23:16.216Z"
+labels = []
+url = "https://gitlab.com/qemu-project/qemu/-/issues/1576"
+host-os = "Proxmox VE 7.4 (but using upstream QEMU builds)"
+host-arch = "x86"
+qemu-version = "v8.0.0-rc2"
+guest-os = "n/a"
+guest-arch = "n/a"
+description = """Loading the VM state fails with:
+```
+qemu-system-x86_64: get_pci_config_device: Bad config data: i=0x10a read: 40 device: 0 cmask: ff wmask: 0 w1cmask:0
+qemu-system-x86_64: Failed to load PCIDevice:config
+qemu-system-x86_64: Failed to load pcie-root-port:parent_obj.parent_obj.parent_obj
+qemu-system-x86_64: error while loading state for instance 0x0 of device '0000:00:1c.0/pcie-root-port'
+qemu-system-x86_64: Error -22 while loading VM state
+```"""
+reproduce = """Used the following script with the first argument being a build directory of v8.0.0-rc2 and the second a build directory of v7.2.0
+```
+#!/bin/bash
+rm /tmp/disk.qcow2
+args="
+  -device pcie-root-port,multifunction=on,bus=pcie.0,addr=1c.0,port=1,chassis=1
+  -machine type=pc-q35-7.2"
+$1/qemu-img create -f qcow2 /tmp/disk.qcow2 1G
+$1/qemu-system-x86_64 --qmp stdio --blockdev qcow2,node-name=node0,file.driver=file,file.filename=/tmp/disk.qcow2 $args <<EOF
+{"execute": "qmp_capabilities"}
+{"execute": "snapshot-save", "arguments": { "job-id": "save0", "tag": "snap", "vmstate": "node0", "devices": ["node0"] } }
+{"execute": "quit"}
+EOF
+$2/qemu-system-x86_64 --qmp stdio --blockdev qcow2,node-name=node0,file.driver=file,file.filename=/tmp/disk.qcow2 $args -loadvm snap
+```"""
+additional = """Bisecting shows that 010746ae1d ("hw/pci/aer: Implement PCI_ERR_UNCOR_MASK register") is the first bad commit."""