Bug 1655826

Created attachment 1511169 [details]
cpuinfo and backtrace

On qemu-kvm-3.1.0-0.module+el8+2266+616cf026.next.candidate.x86_64, start with following cmdline:
# LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DRV=spice /usr/libexec/qemu-kvm -name guest=pc,debug-threads=on -cpu Opteron_G3,vme=on,x2apic=on,tsc-deadline=on,hypervisor=on,arat=on,mmxext=on,fxsr_opt=on,pdpe1gb=on,3dnowext=on,3dnow=on,cmp_legacy=on,cr8legacy=on,3dnowprefetch=on,osvw=on,monitor=off -m 1024
qemu-kvm: error: failed to set MSR 0x10a to 0x0
qemu-kvm: /builddir/build/BUILD/qemu-3.1.0/target/i386/kvm.c:2211: kvm_put_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.
[1]    13527 abort (core dumped)  LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin QEMU_AUDIO_DR

It get SIGUSR1 here.
For the backtrace and host cpuinfo, see the attachment.

+++ This bug was initially created as a clone of Bug #1651021 +++

Description of problem:

Error starting domain: internal error: qemu unexpectedly closed the monitor: 2018-11-18T21:51:02.983748Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:EDX.ss [bit 27]
2018-11-18T21:51:03.113175Z qemu-system-x86_64: error: failed to set MSR 0x10a to 0x0
qemu-system-x86_64: /builddir/build/BUILD/qemu-3.1.0-rc1/target/i386/kvm.c:2211: kvm_put_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 75, in cb_wrapper
    callback(asyncjob, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/asyncjob.py", line 111, in tmpcb
    callback(*args, **kwargs)
  File "/usr/share/virt-manager/virtManager/libvirtobject.py", line 66, in newfn
    ret = fn(self, *args, **kwargs)
  File "/usr/share/virt-manager/virtManager/domain.py", line 1400, in startup
    self._backend.create()
  File "/usr/lib64/python3.7/site-packages/libvirt.py", line 1080, in create
    if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirt.libvirtError: internal error: qemu unexpectedly closed the monitor: 2018-11-18T21:51:02.983748Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:EDX.ss [bit 27]
2018-11-18T21:51:03.113175Z qemu-system-x86_64: error: failed to set MSR 0x10a to 0x0
qemu-system-x86_64: /builddir/build/BUILD/qemu-3.1.0-rc1/target/i386/kvm.c:2211: kvm_put_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.


# qemu-kvm 
Unable to init server: Could not connect: Connection refused
qemu-system-x86_64: error: failed to set MSR 0x10a to 0x0
qemu-system-x86_64: /builddir/build/BUILD/qemu-3.1.0-rc1/target/i386/kvm.c:2211: kvm_put_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.
Aborted (core dumped)


Version-Release number of selected component (if applicable):

# qemu-kvm --version
QEMU emulator version 3.0.91 (qemu-3.1.0-0.1.rc1.fc30)
Copyright (c) 2003-2018 Fabrice Bellard and the QEMU Project developers

# rpm -q qemu-kvm
qemu-kvm-3.1.0-0.1.rc1.fc30.x86_64

--- Additional comment from Mikhail on 2018-11-18 17:01 EST ---



--- Additional comment from Mikhail on 2018-11-18 22:27:38 EST ---

Latest workable version:

# rpm -q qemu-kvm 
qemu-kvm-3.0.0-1.fc30.x86_64
# qemu-kvm --version
QEMU emulator version 3.0.0 (qemu-3.0.0-1.fc30)
Copyright (c) 2003-2017 Fabrice Bellard and the QEMU Project developers

--- Additional comment from Cole Robinson on 2018-11-19 10:02:09 EST ---

Thanks for the report. Can you provide:

sudo virsh dumpxml $vmname
/var/log/libvirt/qemu/$vmname.log

--- Additional comment from Mikhail on 2018-11-19 13:23 EST ---



--- Additional comment from Mikhail on 2018-11-19 13:26 EST ---



--- Additional comment from Cole Robinson on 2018-11-19 15:42:20 EST ---

Similar report on the list: https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg03509.html

I'll mention this bug there