| 2023-05-15 22:32:03 |
dann frazier |
bug |
|
|
added bug |
| 2023-05-16 02:48:32 |
dann frazier |
description |
[Impact]
KVM-accelerated virtual machines sometimes fail to start on ARM.
[Test Case]
On an arm64 system, create and destroy KVM-accelerated virtual machines in a loop.
virt-install --name vm3 --numatune 0,mode=preferred --vcpus vcpus=8,maxvcpus=8,cpuset=0-74 --memory 3072 --import --noautoconsole --os-variant name=ubuntu22.04 --disk path=/var/lib/libvirt/images/vm3.qcow2 --boot loader=/usr/share/AAVMF/AAVMF_CODE.fd,loader_ro=yes,loader_type=pflash
When it fails you'll get an error message like:
Error is: ERROR internal error: process exited while connecting to monitor: 2023-04-27T20:21:01.686783Z qemu-system-aarch64: failed to create scratch VCPU with SVE enabled
[Fix]
https://gitlab.com/qemu-project/qemu/-/commit/bbde13cd14ad4eec18529ce0bf5876058464e124
[What Could Go Wrong] |
[Impact]
KVM-accelerated virtual machines sometimes fail to start on ARM.
[Test Case]
On an arm64 system, create and destroy KVM-accelerated virtual machines in a loop.
virt-install --name vm3 --numatune 0,mode=preferred --vcpus vcpus=8,maxvcpus=8,cpuset=0-74 --memory 3072 --import --noautoconsole --os-variant name=ubuntu22.04 --disk path=/var/lib/libvirt/images/vm3.qcow2 --boot loader=/usr/share/AAVMF/AAVMF_CODE.fd,loader_ro=yes,loader_type=pflash
When it fails you'll get an error message like:
Error is: ERROR internal error: process exited while connecting to monitor: 2023-04-27T20:21:01.686783Z qemu-system-aarch64: failed to create scratch VCPU with SVE enabled
[Fix]
https://gitlab.com/qemu-project/qemu/-/commit/bbde13cd14ad4eec18529ce0bf5876058464e124
[What Could Go Wrong]
There may exist conditions that could cause the added loop to block for a long time, burning CPU. However, the fix uses a seemingly common pattern. |
|
| 2023-05-16 06:26:39 |
Christian Ehrhardt |
nominated for series |
|
Ubuntu Kinetic |
|
| 2023-05-16 06:26:39 |
Christian Ehrhardt |
bug task added |
|
qemu (Ubuntu Kinetic) |
|
| 2023-05-16 06:26:39 |
Christian Ehrhardt |
nominated for series |
|
Ubuntu Jammy |
|
| 2023-05-16 06:26:39 |
Christian Ehrhardt |
bug task added |
|
qemu (Ubuntu Jammy) |
|
| 2023-05-16 06:26:45 |
Christian Ehrhardt |
qemu (Ubuntu): status |
New |
Fix Released |
|
| 2023-05-16 06:28:06 |
Christian Ehrhardt |
bug |
|
|
added subscriber Ubuntu Server |
| 2023-05-16 06:28:14 |
Christian Ehrhardt |
tags |
|
server-todo |
|
| 2023-05-16 14:54:28 |
dann frazier |
qemu (Ubuntu Jammy): assignee |
|
dann frazier (dannf) |
|
| 2023-05-16 14:54:31 |
dann frazier |
qemu (Ubuntu Kinetic): assignee |
|
dann frazier (dannf) |
|
| 2023-05-16 14:54:38 |
dann frazier |
qemu (Ubuntu Kinetic): status |
New |
In Progress |
|
| 2023-05-16 14:54:43 |
dann frazier |
qemu (Ubuntu Jammy): status |
New |
In Progress |
|
| 2023-05-16 21:36:58 |
dann frazier |
attachment added |
|
test.sh https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/2019766/+attachment/5673389/+files/test.sh |
|
| 2023-05-16 21:39:05 |
dann frazier |
description |
[Impact]
KVM-accelerated virtual machines sometimes fail to start on ARM.
[Test Case]
On an arm64 system, create and destroy KVM-accelerated virtual machines in a loop.
virt-install --name vm3 --numatune 0,mode=preferred --vcpus vcpus=8,maxvcpus=8,cpuset=0-74 --memory 3072 --import --noautoconsole --os-variant name=ubuntu22.04 --disk path=/var/lib/libvirt/images/vm3.qcow2 --boot loader=/usr/share/AAVMF/AAVMF_CODE.fd,loader_ro=yes,loader_type=pflash
When it fails you'll get an error message like:
Error is: ERROR internal error: process exited while connecting to monitor: 2023-04-27T20:21:01.686783Z qemu-system-aarch64: failed to create scratch VCPU with SVE enabled
[Fix]
https://gitlab.com/qemu-project/qemu/-/commit/bbde13cd14ad4eec18529ce0bf5876058464e124
[What Could Go Wrong]
There may exist conditions that could cause the added loop to block for a long time, burning CPU. However, the fix uses a seemingly common pattern. |
[Impact]
KVM-accelerated virtual machines sometimes fail to start on ARM.
[Test Case]
My reproducer is to run 6 parallel VM create/destroy loop - using the attached test.sh script. When this issue is hit, a VM will fail with the following in its log:
2023-05-16T21:07:37.300791Z qemu-system-aarch64: Failed to retrieve host
CPU features
2023-05-16 21:07:37.466+0000: shutting down, reason=failed
[Fix]
https://gitlab.com/qemu-project/qemu/-/commit/bbde13cd14ad4eec18529ce0bf5876058464e124
[What Could Go Wrong]
There may exist conditions that could cause the added loop to block for a long time, burning CPU. However, the fix uses a seemingly common pattern. |
|
| 2023-05-18 20:46:50 |
Andreas Hasenack |
qemu (Ubuntu Kinetic): status |
In Progress |
Fix Committed |
|
| 2023-05-18 20:46:51 |
Andreas Hasenack |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2023-05-18 20:46:53 |
Andreas Hasenack |
bug |
|
|
added subscriber SRU Verification |
| 2023-05-18 20:46:57 |
Andreas Hasenack |
tags |
server-todo |
server-todo verification-needed verification-needed-kinetic |
|
| 2023-05-18 20:47:29 |
Andreas Hasenack |
qemu (Ubuntu Jammy): status |
In Progress |
Fix Committed |
|
| 2023-05-18 20:47:34 |
Andreas Hasenack |
tags |
server-todo verification-needed verification-needed-kinetic |
server-todo verification-needed verification-needed-jammy verification-needed-kinetic |
|
| 2023-05-19 00:31:38 |
dann frazier |
tags |
server-todo verification-needed verification-needed-jammy verification-needed-kinetic |
server-todo verification-done verification-done-jammy verification-done-kinetic |
|
| 2023-06-05 09:18:17 |
Launchpad Janitor |
qemu (Ubuntu Kinetic): status |
Fix Committed |
Fix Released |
|
| 2023-06-05 09:18:22 |
Łukasz Zemczak |
removed subscriber Ubuntu Stable Release Updates Team |
|
|
|
| 2023-06-05 09:30:55 |
Launchpad Janitor |
qemu (Ubuntu Jammy): status |
Fix Committed |
Fix Released |
|
