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id = 2881
title = "segfault on loadvm after migrate_set_capability multifd on"
state = "opened"
created_at = "2025-03-24T16:49:27.546Z"
closed_at = "n/a"
labels = ["Migration"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/2881"
host-os = "Ubuntu 24.04"
host-arch = "x86_64"
qemu-version = "commit 71119ed3651622e1c531d1294839e9f3341adaf5 (and also commit 1dae461a913f9da88df05de6e2020d3134356f2e )"
guest-os = "Ubuntu 16.04.3 LTS"
guest-arch = "x86_64"
description = """A segfault occurs when running `loadvm` having set `migrate_set_capability multifd on` from the monitor.
EDIT: also `savevm` segfaults."""
reproduce = """1. Take a snapshot with `savevm test`
2. From the monitor run `migrate_set_capability multifd on`
3. Try to restore the snapshot with `loadvm test`"""
additional = """Sorry for not having triaged this much, I think it is worth reporting anyway."""
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