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id = 932
title = "Snapshot created with 6.2.0 cannot be loaded with 7.0.0-rc1"
state = "closed"
created_at = "2022-03-23T12:00:49.938Z"
closed_at = "2022-04-06T20:29:09.281Z"
labels = ["Migration", "Regression"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/932"
host-os = "Proxmox VE 7.1 (but using upstream QEMU builds throughout this report)"
host-arch = "x86"
qemu-version = "QEMU emulator version 6.2.91 (v7.0.0-rc1)"
guest-os = "n/a"
guest-arch = "n/a"
description = """Loading the snapshot will fail with:
````
qemu-system-x86_64: Missing section footer for 0000:00:01.3/piix4_pm
qemu-system-x86_64: Error -22 while loading VM state
````"""
reproduce = """1. Start VM with `6.2.0`.
2. Create a snapshot `takenwith620` with `snapshot-save` QMP command.
3. Stop VM and try to load snapshot with `v7.0.0-rc1`."""
additional = """Bisecting led to `5ead62185d ("memory: Make memory_region_is_mapped() succeed when mapped via an alias")`, but reverting that alone wasn't enough, so I continued and got to `7c0fa8dff8 ("pcie: Add support for Single Root I/O Virtualization (SR/IOV)")`. Only reverting both seems to fix the issue."""
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