Description of problem:
After upgrade of qemu, I cannot copy and paste between host and guest OS's while using Fedora-Live-LXDE-x86_64-22-3.iso as a guest.
Also, my Windows 7 guest's vdagent process uses 100% cpu after upgrade of qemu.

Version-Release number of selected component (if applicable):
$ rpm -qa | grep  "^qemu" | sort
qemu-2.3.1-7.fc22.x86_64
qemu-common-2.3.1-7.fc22.x86_64
qemu-guest-agent-2.3.1-7.fc22.x86_64
qemu-img-2.3.1-7.fc22.x86_64
qemu-kvm-2.3.1-7.fc22.x86_64
qemu-kvm-tools-2.3.1-7.fc22.x86_64
qemu-sanity-check-nodeps-1.1.5-2.fc22.x86_64
qemu-system-aarch64-2.3.1-7.fc22.x86_64
qemu-system-alpha-2.3.1-7.fc22.x86_64
qemu-system-arm-2.3.1-7.fc22.x86_64
qemu-system-cris-2.3.1-7.fc22.x86_64
qemu-system-lm32-2.3.1-7.fc22.x86_64
qemu-system-m68k-2.3.1-7.fc22.x86_64
qemu-system-microblaze-2.3.1-7.fc22.x86_64
qemu-system-mips-2.3.1-7.fc22.x86_64
qemu-system-moxie-2.3.1-7.fc22.x86_64
qemu-system-or32-2.3.1-7.fc22.x86_64
qemu-system-ppc-2.3.1-7.fc22.x86_64
qemu-system-s390x-2.3.1-7.fc22.x86_64
qemu-system-sh4-2.3.1-7.fc22.x86_64
qemu-system-sparc-2.3.1-7.fc22.x86_64
qemu-system-tricore-2.3.1-7.fc22.x86_64
qemu-system-unicore32-2.3.1-7.fc22.x86_64
qemu-system-x86-2.3.1-7.fc22.x86_64
qemu-system-xtensa-2.3.1-7.fc22.x86_64
qemu-user-2.3.1-7.fc22.x86_64

How reproducible:
Everytime

Steps to Reproduce:
1. Downgrade qemu-* packages list above(to qemu-2.3.0-3.fc22.x86_64).
2. Use Virtual Machine Manager to create a new VM, using Fedora-Live-LXDE-x86_64-22-3.iso as a DVD rom.
3. Boot the VM, and comfirm that you can copy and paste between host and guest OS's.
4. Shutdown the VM and upgrade qemu-* packages list above(to qemu-2.3.1-7.fc22.x86_64).
5. Boot the VM again and comfirm that "qemu-guest-agent" and "spice-vdagent" are running.

Actual results:
I cannot copy and paste between host and guest OS's.

Expected results:
I should copy and paste between host and guest OS's.

Additional info:
My windows 7 guest's vdagent process uses 100% cpu after upgrade of qemu and every goes right after downgrade of qemu.