kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.

[Li Feng]

Dear all,

I have encountered a weird crash.
I remember before a few days it works well and I rebase my code from upstream.

This is the command:
/root/qemu-master/x86_64-softmmu/qemu-system-x86_64 -enable-kvm
-device virtio-balloon -cpu host -smp 4 -m 2G -drive
file=/root/html/fedora-10g.img,format=raw,cache=none,aio=native,if=none,id=drive-virtio-disk1
-device 
virtio-blk-pci,scsi=off,drive=drive-virtio-disk1,id=virtio-disk1,bootindex=1
-device virtio-net,netdev=nw1,mac=00:11:22:EE:EE:10 -netdev
tap,id=nw1,script=no,downscript=no,ifname=tap0 -serial mon:stdio
-nographic -object
memory-backend-file,id=mem0,size=2G,mem-path=/dev/hugepages,share=on
-numa node,memdev=mem0 -vnc 0.0.0.0:100 -machine usb=on,nvdimm -device
usb-tablet -monitor unix:///tmp/a.socket,server,nowait -device
virtio-serial-pci,id=virtio-serial0,max_ports=16 -chardev
socket,id=channel1,path=/tmp/helloworld1,server,nowait -device
virtserialport,chardev=channel1,name=com.redhat.rhevm.vdsm1,bus=virtio-serial0.0,id=port1
-qmp tcp:0.0.0.0:2234,server,nowait
qemu-system-x86_64: error: failed to set MSR 0x48f to 0x7fefff00036dfb
qemu-system-x86_64: /root/qemu-master/target/i386/kvm.c:2695:
kvm_buf_set_msrs: Assertion `ret == cpu->kvm_msr_buf->nmsrs' failed.

This is the commit record:
*   c88f1ffc19 - (origin/master, origin/HEAD) Merge remote-tracking
branch 'remotes/kevin/tags/for-upstream' into staging (3 days ago)
<Peter Maydell>
|\
| * 47e0b38a13 - block: Drop unused .bdrv_has_zero_init_truncate (3
days ago) <Eric Blake>
| * dbc636e791 - vhdx: Rework truncation logic (3 days ago) <Eric Blake>
| * bda4cdcbb9 - parallels: Rework truncation logic (3 days ago) <Eric Blake>
| * be9c9404db - ssh: Support BDRV_REQ_ZERO_WRITE for truncate (3 days
ago) <Eric Blake>
| * fec00559e7 - sheepdog: Support BDRV_REQ_ZERO_WRITE for truncate (3
days ago) <Eric Blake>
| * 2f98910d5b - rbd: Support BDRV_REQ_ZERO_WRITE for truncate (3 days
ago) <Eric Blake>

I run this qemu in a VM base on EXSi.

Does anyone have the same issue?

Thanks,

Feng Li