Description of problem:
use auto-test script launch a KVM guest with a IDE cdrom, do resuming from S3 and then reboot it, and do stop/cont, qemu will core dumped at that time.

Version-Release number of selected component (if applicable):
host info:
# uname -r && rpm -q qemu-kvm-rhev
3.10.0-183.el7.x86_64
qemu-kvm-rhev-2.1.2-5.el7.x86_64

How reproducible:
4/4

Steps to Reproduce:
1.use auto-test script launch a KVM guest with a IDE cdrom.

2.start suspend [echo mem > /sys/power/state]

3.sleep a while before resuming guest.

4.reboot guest and wait for guest to go down.

5.logging in after reboot.

6.sending command 'stop'/'cont'.

Actual results:
after step 5, it can logging to VM successfully.
...
11/04 18:42:47 DEBUG|    remote:0242| Login command: 'ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -o PreferredAuthentications=password -p 22 root.9.195'

after step 6, qemu core dumped ater cont the VM.
...
11/04 18:42:50 DEBUG|qemu_monit:0267| (monitor qmpmonitor1) Sending command 'cont' 
11/04 18:42:50 DEBUG|qemu_monit:1373| Send command: {'execute': 'cont', 'id': 'dIAHimAR'}
11/04 18:42:50 INFO |   aexpect:0968| [qemu output] qemu-kvm: /builddir/build/BUILD/qemu-2.1.2/hw/i386/kvm/clock.c:69: kvmclock_current_nsec: Assertion `time.tsc_timestamp <= migration_tsc' failed.
11/04 18:43:14 WARNI|env_proces:1093| virt-tests-vm1 is not alive. Can not query the register status
11/04 18:44:43 ERROR|env_proces:0720| Could not receive data from monitor    ([Errno 104] Connection reset by peer)
11/04 18:44:43 INFO |   aexpect:0968| [qemu output] /tmp/aexpect/hWIRjcmZ/aexpect-TwK037.sh: line 1: 14824 Aborted                 (core dumped)
...

Expected results:
It should no any core dumped.

Additional info:
/bin/qemu-kvm \
    -S  \
    -name 'virt-tests-vm1'  \
    -sandbox off  \
    -M pc  \
    -nodefaults  \
    -vga cirrus  \
    -chardev socket,id=qmp_id_qmpmonitor1,path=/tmp/monitor-qmpmonitor1-20141104-183850-xv81uiU4,server,nowait \
    -mon chardev=qmp_id_qmpmonitor1,mode=control  \
    -chardev socket,id=serial_id_serial0,path=/tmp/serial-serial0-20141104-183850-xv81uiU4,server,nowait \
    -device isa-serial,chardev=serial_id_serial0  \
    -chardev socket,id=seabioslog_id_20141104-183850-xv81uiU4,path=/tmp/seabios-20141104-183850-xv81uiU4,server,nowait \
    -device isa-debugcon,chardev=seabioslog_id_20141104-183850-xv81uiU4,iobase=0x402 \
    -device ich9-usb-uhci1,id=usb1,bus=pci.0,addr=03 \
    -drive id=drive_image1,if=none,cache=none,snapshot=off,aio=native,file=/root/test/autotest-devel/client/tests/virt/shared/data/images/RHEL-Server-7.1-64-virtio.qcow2 \
    -device virtio-blk-pci,id=image1,drive=drive_image1,bootindex=0,bus=pci.0,addr=04 \
    -device virtio-net-pci,mac=9a:48:49:4a:4b:4c,id=iduD6fJo,vectors=4,netdev=idSwoouV,bus=pci.0,addr=05  \
    -netdev tap,id=idSwoouV,vhost=on,vhostfd=23,fd=22  \
    -m 4096  \
    -smp 4,cores=2,threads=1,sockets=2  \
    -cpu 'SandyBridge',+kvm_pv_unhalt \
    -drive id=drive_cd1,if=none,snapshot=off,aio=native,media=cdrom,file=/root/test/autotest-devel/client/tests/virt/shared/data/images/orig.iso \
    -device ide-cd,id=cd1,drive=drive_cd1,bootindex=1,bus=ide.0,unit=0 \
    -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1  \
    -vnc :0  \
    -rtc base=utc,clock=host,driftfix=slew  \
    -boot order=cdn,once=c,menu=off  \
    -global PIIX4_PM.disable_s3=0 \
    -no-kvm-pit-reinjection \
    -enable-kvm