RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1301830 - Key event queue full when input through keyboard after boot vm
Summary: Key event queue full when input through keyboard after boot vm
Keywords:
Status: CLOSED WORKSFORME
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev
Version: 7.2
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: rc
: ---
Assignee: Gerd Hoffmann
QA Contact: hachen
URL:
Whiteboard:
Depends On: 1293234
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-01-26 05:12 UTC by jingzhao
Modified: 2017-02-03 08:01 UTC (History)
14 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of: 1293234
Environment:
Last Closed: 2017-02-03 08:01:51 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Comment 1 jingzhao 2016-01-26 05:19:46 UTC 
Reproduced on kernel-3.10.0-327.10.1.el7.x86_64 and qemu-kvm-rhev-2.3.0-31.el7_2.7.x86_64 with win10 guest 

Another info:

Gerd, following is the usb info which boot vm and the info which re-add the usb-keyboard. 

(qemu) info usb
  Device 0.1, Port 1, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.1, Port 2, Speed 12 Mb/s, Product QEMU USB Hub
  Device 0.1, Port 3, Speed 1.5 Mb/s, Product CS-1734A V4.2.418
  Device 0.2, Port 4, Speed 480 Mb/s, Product QEMU USB Keyboard
  Device 0.3, Port 5, Speed 480 Mb/s, Product QEMU USB Mouse
  Device 0.4, Port 6, Speed 480 Mb/s, Product QEMU USB Tablet
  Device 0.2, Port 2.1, Speed 12 Mb/s, Product QEMU USB CCID
(qemu) dev
device_add  device_del  
(qemu) device_del kbd1 
(qemu) info usb
  Device 0.1, Port 1, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.1, Port 2, Speed 12 Mb/s, Product QEMU USB Hub
  Device 0.1, Port 3, Speed 1.5 Mb/s, Product CS-1734A V4.2.418
  Device 0.3, Port 5, Speed 480 Mb/s, Product QEMU USB Mouse
  Device 0.4, Port 6, Speed 480 Mb/s, Product QEMU USB Tablet
  Device 0.2, Port 2.1, Speed 12 Mb/s, Product QEMU USB CCID
(qemu) ehci warning: guest updated active QH

(qemu) dev
device_add  device_del  
(qemu) device_add usb-kbd,id=kbd1,serial=1111
(qemu) info usb
  Device 0.1, Port 1, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.1, Port 2, Speed 12 Mb/s, Product QEMU USB Hub
  Device 0.1, Port 3, Speed 1.5 Mb/s, Product CS-1734A V4.2.418
  Device 0.3, Port 5, Speed 480 Mb/s, Product QEMU USB Mouse
  Device 0.4, Port 6, Speed 480 Mb/s, Product QEMU USB Tablet
  Device 0.2, Port 2.1, Speed 12 Mb/s, Product QEMU USB CCID
  Device 0.3, Port 2.2, Speed 12 Mb/s, Product QEMU USB Keyboard
Comment 3 Gerd Hoffmann 2017-01-10 09:17:22 UTC 
Can you re-test with qemu-2.8 and a fresh windows install please?
Comment 4 hachen 2017-01-20 09:15:48 UTC 
It works correctly.

I have tried win10_64 guest twice with:
3.10.0-541.el7.x86_64
qemu-kvm-rhev-2.8.0-2.el7.x86_64

/usr/libexec/qemu-kvm \
    -name 'avocado-vt-vm1'  \
    -sandbox off  \
    -machine pc  \
    -nodefaults  \
    -vga cirrus  \
    -chardev socket,id=qmp_id_qmpmonitor1,path=/var/tmp/hachen/monitor-qmpmonitor1-20170120-031759-FSOSsoeT,server,nowait \
    -mon chardev=qmp_id_qmpmonitor1,mode=control  \
    -chardev socket,id=qmp_id_catch_monitor,path=/var/tmp/hachen/monitor-catch_monitor-20170120-031759-FSOSsoeT,server,nowait \
    -mon chardev=qmp_id_catch_monitor,mode=control \
    -device pvpanic,ioport=0x505,id=idXCDPC9  \
    -chardev socket,id=serial_id_serial0,path=/var/tmp/hachen/serial-serial0-20170120-031759-FSOSsoeT,server,nowait \
    -device isa-serial,chardev=serial_id_serial0  \
    -chardev socket,id=seabioslog_id_20170120-031759-FSOSsoeT,path=/var/tmp/hachen/seabios-20170120-031759-FSOSsoeT,server,nowait \
    -device isa-debugcon,chardev=seabioslog_id_20170120-031759-FSOSsoeT,iobase=0x402 \
    -device ich9-usb-ehci1,id=usb1,addr=1d.7,multifunction=on,bus=pci.0 \
    -device ich9-usb-uhci1,id=usb1.0,multifunction=on,masterbus=usb1.0,addr=1d.0,firstport=0,bus=pci.0 \
    -device ich9-usb-uhci2,id=usb1.1,multifunction=on,masterbus=usb1.0,addr=1d.2,firstport=2,bus=pci.0 \
    -device ich9-usb-uhci3,id=usb1.2,multifunction=on,masterbus=usb1.0,addr=1d.4,firstport=4,bus=pci.0 \
    -drive id=drive_image1,if=none,snapshot=off,aio=native,cache=none,format=qcow2,file=/home/kvm_autotest_root/images/win10-64-virtio.qcow2 \
    -device virtio-blk-pci,id=image1,drive=drive_image1,bootindex=0,bus=pci.0,addr=03 \
    -device virtio-net-pci,mac=9a:1b:1c:1d:1e:1f,id=id0DIFuj,vectors=4,netdev=ids9igQ1,bus=pci.0,addr=04  \
    -netdev tap,id=ids9igQ1 \
    -m 16384  \
    -smp 8,maxcpus=8,cores=4,threads=1,sockets=2  \
    -cpu 'Haswell-noTSX',+kvm_pv_unhalt \
    -vnc :0  \
    -rtc base=utc,clock=host,driftfix=slew  \
    -boot order=cdn,once=c,menu=off,strict=off \
    -enable-kvm \
    -monitor stdio \
    -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7 \
    -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5 \
    -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1 \
    -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2 \
    -drive file=/home/usb/usb-storage.qcow2,if=none,id=storage0,media=disk,cache=none,format=qcow2 \
    -device usb-storage,drive=storage0,removable=on,bus=usb.0,id=storage0,bootindex=1 \
    -device usb-hub \
    -device usb-host \
    -device usb-kbd,bus=usb1.0,port=1  \
    -device usb-mouse,bus=usb1.0,port=3  \
    -device usb-tablet,bus=usb1.0,port=5  \  <----**with or without this line**
    -device usb-ccid \
Comment 6 hachen 2017-01-24 09:40:01 UTC 
I have tried win10_64 guest 7 times with:
3.10.0-327.10.1.el7.x86_64
qemu-kvm-rhev-2.3.0-31.el7_2.7.x86_64

/usr/libexec/qemu-kvm \
    -name 'avocado-vt-vm1'  \
    -sandbox off  \
    -machine pc  \
    -nodefaults  \
    -vga cirrus  \
    -device ich9-usb-ehci1,id=usb1,addr=1d.7,multifunction=on,bus=pci.0 \
    -device ich9-usb-uhci1,id=usb1.0,multifunction=on,masterbus=usb1.0,addr=1d.0,firstport=0,bus=pci.0 \
    -device ich9-usb-uhci2,id=usb1.1,multifunction=on,masterbus=usb1.0,addr=1d.2,firstport=2,bus=pci.0 \
    -device ich9-usb-uhci3,id=usb1.2,multifunction=on,masterbus=usb1.0,addr=1d.4,firstport=4,bus=pci.0 \
    -drive id=drive_image1,if=none,snapshot=off,aio=threads,cache=unsafe,format=qcow2,file=/root/win10-64-virtio.qcow2 \
    -device virtio-blk-pci,id=image1,drive=drive_image1,bootindex=0,bus=pci.0,addr=03 \
    -device virtio-net-pci,mac=9a:1d:1e:1f:20:21,id=idndA2FD,vectors=4,netdev=idRZl6iJ,bus=pci.0,addr=04  \
    -netdev tap,id=idRZl6iJ \
    -m 4096  \
    -smp 4,maxcpus=4,cores=2,threads=1,sockets=2  \
    -cpu 'SandyBridge',+kvm_pv_unhalt \
    -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,strict=off \
    -enable-kvm \
    -monitor stdio \
    -no-shutdown \
    -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7 \
    -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5 \
    -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1 \
    -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2 \
    -drive file=/home/usb/usb-storage.qcow2,if=none,id=storage0,media=disk,cache=none,format=qcow2 \
    -device usb-storage,drive=storage0,removable=on,bus=usb.0,id=storage0,bootindex=1 \
    -device usb-hub \
    -device usb-host \
    -device usb-kbd,bus=usb.0  \
    -device usb-mouse,bus=usb.0  \
    -device usb-ccid \


The last 5 times, the bug is reproduced.
It seems once it happens, it will always happen in the future.
How reproducible: 5/7

QEMU 2.3.0 monitor - type 'help' for more information
(qemu) ehci warning: guest updated active QH
ehci warning: guest updated active QH
usb-kbd: warning: key event queue full
usb-kbd: warning: key event queue full
usb-kbd: warning: key event queue full

(qemu) info usb
  Device 0.1, Port 1, Speed 480 Mb/s, Product QEMU USB Tablet
  Device 1.1, Port 1, Speed 480 Mb/s, Product QEMU USB MSD
  Device 1.1, Port 2, Speed 12 Mb/s, Product QEMU USB Hub
  Device 1.2, Port 3, Speed 480 Mb/s, Product RNDIS/Ethernet Gadget
  Device 1.3, Port 4, Speed 480 Mb/s, Product QEMU USB Keyboard
  Device 1.4, Port 5, Speed 480 Mb/s, Product QEMU USB Mouse
  Device 1.1, Port 6, Speed 12 Mb/s, Product QEMU USB CCID


Also 3 times with 
3.10.0-541.el7.x86_64 and
qemu-kvm-rhev-2.8.0-2.el7.x86_64
everything else is same. It can not be reproduced.
Comment 7 hachen 2017-01-24 10:08:14 UTC 
(In reply to hachen from comment #6)

> Also 3 times with 
> 3.10.0-541.el7.x86_64 and
> qemu-kvm-rhev-2.8.0-2.el7.x86_64
> everything else is same. It can not be reproduced.

In fact, I tried another 7 times, 10 times in total.It can not be reproduced.
Comment 9 Gerd Hoffmann 2017-02-03 08:01:51 UTC 
> In fact, I tried another 7 times, 10 times in total.It can not be reproduced.

closing as worksforme then.
Note You need to log in before you can comment on or make changes to this bug.