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id = 2626
title = "QEMU crashes after host time moves backwards"
state = "opened"
created_at = "2024-10-18T06:27:46.932Z"
closed_at = "n/a"
labels = ["Security", "target: i386"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/2626"
host-os = "Ubuntu 18.04"
host-arch = "x86"
qemu-version = "4.2.1 (also reproduced for 6.2.0)"
guest-os = "windows 2016"
guest-arch = "x86"
description = """QEMU process crashes after time synchronized and moved backwards on the host."""
reproduce = """As detailed in the [thread](https://bugzilla.redhat.com/show_bug.cgi?id=2228406)
1. create a virtual machine and change tick period in the guest
2. executing `while [ 1 ];do hwclock --systohc; hwclock --hctosys;done` on the host"""
additional = "n/a"
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