From: TheCatFelix <1884684@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1884684] Re: QEMU 5.0: Guest VM hangs/freeze when unplugging USB device
Date: Tue, 11 Aug 2020 22:23:57 -0000 [thread overview]
Message-ID: <159718463763.26262.10272195649266297628.malone@gac.canonical.com> (raw)
In-Reply-To: 159287262873.13509.14889128175029136647.malonedeb@wampee.canonical.com
Link to bug on the proxmox side:
https://bugzilla.proxmox.com/show_bug.cgi?id=2781
** Bug watch added: bugzilla.proxmox.com/ #2781
https://bugzilla.proxmox.com/show_bug.cgi?id=2781
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1884684
Title:
QEMU 5.0: Guest VM hangs/freeze when unplugging USB device
Status in QEMU:
New
Bug description:
Setup:
Host: Debian/SID, Kernel 5.6, QEMU 5.0
Guest: Windows 10 VM with PCI and USB device passthrough.
Problem: Guest VM suddenly hangs when pulling USB device out from the
Host.
Observations:
- Issue appears to be related to QEMU 5.0
- It started after an upgrade to QEMU 5.0.
- Downgrading only QEMU on multiple systems fixes the issue.
- Issue is very reproducible.
- Most of the time within a few attempts of pulling/reconnecting the device.
- Issue happens with multiple devices (I did try standard HID devices, a webcam and an x-ray sensor).
- Guest just hangs.
- Display output remains on last frame shown.
- Ping to Guest immediately stops working.
- Logs in the Guest stop logging immediately.
- Host is fine and thinks the Guest is fine.
- Guest continues to show as running in "virsh list".
- No suspicious entries in the QEMU logs.
- No suspicious entries in Host syslogs/messages.
- Host can can kill guest "virsh destroy" and respawn fine.
- Issue seems widespread.
- Multiple similar reports from ProxMox users after upgrade to ProxMox 6.2 for both Windows and Linux guests (First version that uses QEMU 5.0)
https://forum.proxmox.com/threads/vm-freezes-when-disconnecting-usb-keyboard-and-mouse.70287/
https://forum.proxmox.com/threads/usb-drive-crashes-vm.70214/
https://forum.proxmox.com/threads/latest-proxmox-usb-disconnects-freeze-kvm.70398/
https://forum.proxmox.com/threads/vm-with-gpu-passthrough-freezes-when-turning-off-monitor-after-proxmox-6-2-upgrade.69821/
https://forum.proxmox.com/threads/vm-with-gpu-passthrough-freezes-when-turning-off-monitor-after-proxmox-6-2-upgrade.69824/
I'd be more than happy any debugs that might be helpful.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1884684/+subscriptions
next prev parent reply other threads:[~2020-08-11 22:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-23 0:37 [Bug 1884684] [NEW] QEMU 5.0: Guest VM hangs/freeze when unplugging USB device TheCatFelix
2020-07-30 15:37 ` [Bug 1884684] " TheCatFelix
2020-08-11 22:23 ` TheCatFelix [this message]
2020-08-12 0:35 ` TheCatFelix
2021-05-07 2:51 ` Thomas Huth
2021-05-07 14:08 ` TheCatFelix
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=159718463763.26262.10272195649266297628.malone@gac.canonical.com \
--to=1884684@bugs.launchpad.net \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).