https://lists.cs.columbia.edu/pipermail/kvmarm/2020-September/042543.html
this patch will slove this bug。 Can you test it？
** Changed in: linux (Ubuntu)
Status: Expired => New
** Also affects: kunpeng920
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1869763
Title:
Huawei Kunpeng 920 arm64 machine KVM guest frequently crash
Status in kunpeng920:
New
Status in linux package in Ubuntu:
New
Bug description:
Hardware spec: 64 core 64 G ram arm64
OS & kernel version: Ubuntu 18.04.4 LTS, 4.15.0-91-generic
`virt-host-validate qemu` output:
QEMU: Checking if device /dev/kvm exists : PASS
QEMU: Checking if device /dev/kvm is accessible : PASS
QEMU: Checking if device /dev/vhost-net exists : PASS
QEMU: Checking if device /dev/net/tun exists : PASS
QEMU: Checking for cgroup 'memory' controller support : PASS
QEMU: Checking for cgroup 'memory' controller mount-point : PASS
QEMU: Checking for cgroup 'cpu' controller support : PASS
QEMU: Checking for cgroup 'cpu' controller mount-point : PASS
QEMU: Checking for cgroup 'cpuacct' controller support : PASS
QEMU: Checking for cgroup 'cpuacct' controller mount-point : PASS
QEMU: Checking for cgroup 'cpuset' controller support : PASS
QEMU: Checking for cgroup 'cpuset' controller mount-point : PASS
QEMU: Checking for cgroup 'devices' controller support : PASS
QEMU: Checking for cgroup 'devices' controller mount-point : PASS
QEMU: Checking for cgroup 'blkio' controller support : PASS
QEMU: Checking for cgroup 'blkio' controller mount-point : PASS
WARN (Unknown if this platform has IOMMU support)
libvirt version: 4.0.0-1ubuntu8.14
qemu version: 1:2.11+dfsg-1ubuntu7.23 arm64
guest vm kernel version: 4.15.0-64-generic aarch64
dmesg log:
kvm [49132]: Unexpected L2 read permission error
libvirt log:
ubuntu libvirtd: 2020-03-20 03:04.474+0000: 42934: warning :
qemuDomainObjTaint:5602 : Domain id=38 name='vm-157'
uuid=3d447d79-c2a1-4351-b607-6698a2cd6c5f is tainted: host-cpu
When "Unexpected L2 read permission error" this error occured, one of guest
machines will become "paused" state, need to `virsh reset PAUSED_VM_NAME` to
reset then start it. Those guest vm hang/crash occured very frequently,
sometimes several times per hour.
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