Bug 1043368

Description of problem:
Start Guest with multiple vioserialport ,sometimes the vioserialport can not be used due to "The I/O operation has been aborted because of either a thread exit or an application request "


Version-Release number of selected component (if applicable):
3.10.0-50.el7.x86_64
package qemu-kvm is not installed
qemu-kvm-rhev-1.5.3-19.el7.x86_64
seabios-1.7.2.2-4.el7.x86_64
package sgabios is not installed
seabios-bin-1.7.2.2-4.el7.noarch

How reproducible:
25%

Steps to Reproduce:
1.Start Guest with multiple viriserialport
CLI:/usr/libexec/qemu-kvm -M pc-i440fx-rhel7.0.0 -cpu SandyBridge -enable-kvm -m 2G -smp 2,cores=2 -name bcao_win-7-32-netkvm -uuid 884e673a-1b4a-4385-a522-b3cc35ef4e18 -rtc base=localtime,clock=host,driftfix=slew -drive file=win8-64.qcow2,if=none,media=disk,serial=aaabbbccc,werror=stop,rerror=stop,cache=none,format=qcow2,id=drive-disk0 -device ide-drive,bus=ide.0,unit=1,physical_block_size=4096,logical_block_size=512,drive=drive-disk0,id=disk0 -drive file=/root/en_windows_8_enterprise_x64_dvd_917522.iso,if=none,media=cdrom,id=aa -device ide-drive,id=aa1,drive=aa,bootindex=1 -drive file=/usr/share/virtio-win/virtio-win.iso,media=cdrom,if=none,id=bb -device ide-drive,id=bb1,drive=bb -netdev tap,vhost=on,id=netdev0 -device e1000,netdev=netdev0,id=nic1,mac=1a:46:0b:ca:bc:7b -vnc :1 -vga std -monitor stdio -usb -device usb-tablet,id=tablet0 -global PIIX4_PM.disable_s3=0 -global PIIX4_PM.disable_s4=0 -monitor unix:/tmp/tt,server,nowait
-device virtio-serial-pci,id=virtio-serial0,max_ports=16
-chardev socket,id=channel0,path=/tmp/helloworld0,server,nowait
-device virtserialport,chardev=channel0,name=com.redhat.rhevm.vdsm0,bus=virtio-serial0.0,id=port0
-device virtio-serial-pci,id=virtio-serial1,max_ports=16
-chardev socket,id=channel1,path=/tmp/helloworld1,server,nowait
-device virtserialport,chardev=channel1,name=com.redhat.rhevm.vdsm1,bus=virtio-serial1.0,id=port1
-chardev socket,id=channel2,path=/tmp/helloworld2,server,nowait
-device virtserialport,chardev=channel2,name=com.redhat.rhevm.vdsm2,bus=virtio-serial1.0,id=port2
-chardev socket,id=channel3,path=/tmp/helloworld3,server,nowait
-device virtserialport,chardev=channel3,name=com.redhat.rhevm.vdsm3,bus=virtio-serial1.0,id=port3,nr=11
-device virtio-serial-pci,id=virtio-serial2,max_ports=16
-chardev socket,id=channel4,path=/tmp/helloworld4,server,nowait
-device virtserialport,chardev=channel4,name=com.redhat.rhevm.vdsm4,bus=virtio-serial2.0,id=port4,nr=10
-chardev socket,id=channel5,path=/tmp/helloworld5,server,nowait
-device virtserialport,chardev=channel5,name=com.redhat.rhevm.vdsm5,bus=virtio-serial2.0,id=port5,nr=11
-chardev socket,id=channel6,path=/tmp/helloworld6,server,nowait
-device virtserialport,chardev=channel6,name=com.redhat.rhevm.vdsm6,bus=virtio-serial2.0,id=port6

2.Transferring data from guest to host in a loop by each vioserial port
  on the hosts "for ((i=0;i<=6;i++)); do python serial-host-receive.py /tmp/helloworld$i; done"
 in the guest " for ((i=0;i<=6;i++)); do VirtIOChannel_Guest_send.py com.redhat.rhevm.vdsm$i ;sleep 3 ; echo `date` >> b.txt ;done 


Actual results:
Sometimes ,one if the virtserialport can no be used for transferring data with error 995 "The I/O operation has been aborted because of either a thread exit or an application request "


Expected results:


Additional info:
Quit the VM and restart it will fix the issue