Created attachment 1513022 [details]
core dump log

Description of problem:

# sh test.sh 
QEMU 3.0.92 monitor - type 'help' for more information
(qemu) 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.
src.sh: line 51: 14964 Aborted                 (core dumped)




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

Kernel-4.18.0-37.el8.x86_64
qemu-kvm-3.1.0-0.module+el8+2266+616cf026.next.candidate




How reproducible:
5/5


Steps to Reproduce:

1. start guest with below cmd lines.

/usr/libexec/qemu-kvm \
    -S  \
    -name 'avocado-vt-vm1'  \
    -sandbox off  \
    -machine q35  \
    -nodefaults \
    -device VGA,bus=pcie.0,addr=0x1 \
    -device pcie-root-port,id=pcie_root_port_0,slot=2,chassis=2,addr=0x2,bus=pcie.0 \
    -device pcie-root-port,id=pcie_root_port_1,slot=3,chassis=3,addr=0x3,bus=pcie.0 \
    -device pcie-root-port,id=pcie_root_port_2,slot=4,chassis=4,addr=0x4,bus=pcie.0  \
    -chardev socket,id=qmp_id_qmpmonitor1,path=/var/tmp/avocado_w2u90exl/monitor-qmpmonitor1-20181127-024837-wdAVx2FL,server,nowait \
    -mon chardev=qmp_id_qmpmonitor1,mode=control  \
    -chardev socket,id=qmp_id_catch_monitor,path=/var/tmp/avocado_w2u90exl/monitor-catch_monitor-20181127-024837-wdAVx2FL,server,nowait \
    -mon chardev=qmp_id_catch_monitor,mode=control \
    -device pvpanic,ioport=0x505,id=idulvcka  \
    -chardev socket,id=serial_id_serial0,path=/var/tmp/avocado_w2u90exl/serial-serial0-20181127-024837-wdAVx2FL,server,nowait \
    -device isa-serial,chardev=serial_id_serial0  \
    -chardev socket,id=seabioslog_id_20181127-024837-wdAVx2FL,path=/var/tmp/avocado_w2u90exl/seabios-20181127-024837-wdAVx2FL,server,nowait \
    -device isa-debugcon,chardev=seabioslog_id_20181127-024837-wdAVx2FL,iobase=0x402 \
    -device pcie-root-port,id=pcie.0-root-port-5,slot=5,chassis=5,addr=0x5,bus=pcie.0 \
    -device qemu-xhci,id=usb1,bus=pcie.0-root-port-5,addr=0x0 \
    -device pcie-root-port,id=pcie.0-root-port-6,slot=6,chassis=6,addr=0x6,bus=pcie.0 \
    -device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pcie.0-root-port-6,addr=0x0 \
    -blockdev driver=file,cache.direct=off,cache.no-flush=on,filename=/home/kvm_autotest_root/images/win2019-64-virtio-scsi.qcow2,node-name=my_file \
    -blockdev driver=qcow2,node-name=my,file=my_file \
    -device scsi-hd,drive=my,bus=virtio_scsi_pci0.0 \
    -blockdev driver=file,cache.direct=off,cache.no-flush=on,filename=/home/kvm_autotest_root/images/data.qcow2,node-name=data_disk \
    -blockdev driver=qcow2,node-name=disk1,file=data_disk \
    -device scsi-hd,drive=disk1,bus=virtio_scsi_pci0.0 \
    -device pcie-root-port,id=pcie.0-root-port-7,slot=7,chassis=7,addr=0x7,bus=pcie.0 \
    -device virtio-net-pci,mac=9a:34:35:36:37:38,id=idyb3F88,vectors=4,netdev=idTAFS0s,bus=pcie.0-root-port-7,addr=0x0  \
    -netdev tap,id=idTAFS0s,vhost=on \
    -m 8G  \
    -smp 12,maxcpus=12,cores=6,threads=1,sockets=2  \
    -cpu 'Opteron_G5',+kvm_pv_unhalt \
    -device pcie-root-port,id=pcie.0-root-port-9,slot=9,chassis=9,addr=0x9,bus=pcie.0 \
    -device virtio-scsi-pci,id=virtio_scsi_pci1,bus=pcie.0-root-port-9,addr=0x0 \
    -blockdev driver=file,cache.direct=off,cache.no-flush=on,filename=/home/kvm_autotest_root/iso/windows/winutils.iso,node-name=cd_disk1,read-only=on \
    -blockdev driver=raw,node-name=cd1,file=cd_disk1,read-only=on \
    -device scsi-cd,drive=cd1,bus=virtio_scsi_pci1.0,id=cd_disk1 \
    -blockdev driver=file,cache.direct=off,cache.no-flush=on,filename=/home/kvm_autotest_root/iso/windows/virtio-win-prewhql-0.1-162.iso,node-name=cd_disk2,read-only=on \
    -blockdev driver=raw,node-name=cd2,file=cd_disk2,read-only=on \
    -device scsi-cd,drive=cd2,bus=virtio_scsi_pci1.0,id=cd_disk2 \
    -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1  \
    -vnc :0  \
    -rtc base=localtime,clock=host,driftfix=slew  \
    -boot order=cdn,once=c,menu=off,strict=off \
    -enable-kvm \
    -monitor stdio \
    -qmp tcp:0:4444,server,nowait \



Actual results:

after step 1: 
(qemu) 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.
src.sh: line 51: 14964 Aborted                 (core dumped)


Expected results:
boot up normally.


Additional info:

Tested on qemu-kvm-3.0.0-2.module+el8+2246+78080371, not hit this issue.