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 1001604 - usb hub doesn't work properly (win7 sees downstream port #1 only).
Summary: usb hub doesn't work properly (win7 sees downstream port #1 only).
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.0
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Gerd Hoffmann
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-08-27 11:40 UTC by Xu Han
Modified: 2014-06-18 03:35 UTC (History)
10 users (show)

Fixed In Version: qemu-kvm-1.5.3-10.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-06-13 10:42:26 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
usb device info screenshot in rhel7 host (123.33 KB, image/png)
2013-08-27 11:44 UTC, Xu Han 		no flags Details
usb device info screenshot in rhel6 host (116.79 KB, image/png)
2013-08-27 11:44 UTC, Xu Han 		no flags Details
verify this bug with qemu-kvm-1.5.3-10.el7.x86_64, attach the screenshot (103.64 KB, image/jpeg)
2013-10-25 07:16 UTC, Qian Guo 		no flags Details
View All

Description Xu Han 2013-08-27 11:40:11 UTC 
Description of problem:
boot windows guest(win7-64, win2k8-64) with attach 16 usb device to ehci adapter with companion uhci would recognized only 6.

Version-Release number of selected component (if applicable):
kernel: 3.10.0-8.el7.x86_64
qemu: qemu-kvm-1.5.2-4.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.boot guest
#/usr/libexec/qemu-kvm -M pc-i440fx-rhel7.0.0 -cpu SandyBridge -enable-kvm -m 2G -smp 4,sockets=2,cores=2,threads=1 -name usb-test -rtc base=localtime,clock=host,driftfix=slew -drive file=/home/guest-img/win7-64-virtio.bak.qcow2,if=none,id=drive-system-disk,format=qcow2,cache=none,aio=native,werror=stop,rerror=stop -device ide-hd,bus=ide.0,unit=0,drive=drive-system-disk,id=system-disk,bootindex=1 -qmp tcp:0:4444,server,nowait -k en-us -boot menu=on -vnc :1 -spice disable-ticketing,port=5931 -vga qxl -monitor stdio \

-readconfig /home/ich9-ehci-uhci.cfg \

-drive file=/home/disk/disk1.qcow2,if=none,id=drive-usb-0-1,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-1,id=usb-0-1,removable=on \
-drive file=/home/disk/disk2.qcow2,if=none,id=drive-usb-0-2,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-2,id=usb-0-2,removable=on \
-drive file=/home/disk/disk3.qcow2,if=none,id=drive-usb-0-3,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-3,id=usb-0-3,removable=on \
-drive file=/home/disk/disk4.qcow2,if=none,id=drive-usb-0-4,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-4,id=usb-0-4,removable=on \
-drive file=/home/disk/disk5.qcow2,if=none,id=drive-usb-0-5,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-5,id=usb-0-5,removable=on \
-drive file=/home/disk/disk6.qcow2,if=none,id=drive-usb-0-6,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-6,id=usb-0-6,removable=on \
-drive file=/home/disk/disk7.qcow2,if=none,id=drive-usb-0-7,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-7,id=usb-0-7,removable=on \
-drive file=/home/disk/disk8.qcow2,if=none,id=drive-usb-0-8,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-8,id=usb-0-8,removable=on \
-drive file=/home/disk/disk9.qcow2,if=none,id=drive-usb-0-9,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-9,id=usb-0-9,removable=on \
-drive file=/home/disk/disk10.qcow2,if=none,id=drive-usb-0-10,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-10,id=usb-0-10,removable=on \
-drive file=/home/disk/disk11.qcow2,if=none,id=drive-usb-0-11,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-11,id=usb-0-11,removable=on \
-drive file=/home/disk/disk12.qcow2,if=none,id=drive-usb-0-12,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-12,id=usb-0-12,removable=on \
-drive file=/home/disk/disk13.qcow2,if=none,id=drive-usb-0-13,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-13,id=usb-0-13,removable=on \
-drive file=/home/disk/disk14.qcow2,if=none,id=drive-usb-0-14,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-14,id=usb-0-14,removable=on \
-drive file=/home/disk/disk15.qcow2,if=none,id=drive-usb-0-15,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-15,id=usb-0-15,removable=on \
-drive file=/home/disk/disk16.qcow2,if=none,id=drive-usb-0-16,media=disk,format=qcow2,cache=none,aio=native -device usb-storage,drive=drive-usb-0-16,id=usb-0-16,removable=on

#cat /home/ich9-ehci-uhci.cfg
[device "ehci"]
  driver = "ich9-usb-ehci1"
  addr = "1d.7"
  multifunction = "on"

[device "uhci-1"]
  driver = "ich9-usb-uhci1"
  addr = "1d.0"
  multifunction = "on"
  masterbus = "ehci.0"
  firstport = "0"

[device "uhci-2"]
  driver = "ich9-usb-uhci2"
  addr = "1d.1"
  multifunction = "on"
  masterbus = "ehci.0"
  firstport = "2"

[device "uhci-3"]
  driver = "ich9-usb-uhci3"
  addr = "1d.2"
  multifunction = "on"
  masterbus = "ehci.0"
  firstport = "4"


2.check usb device in qemu monitor
(qemu) info usb
  Device 0.1, Port 1, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.2, Port 2, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.3, Port 3, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.4, Port 4, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.5, Port 5, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.1, Port 6, Speed 12 Mb/s, Product QEMU USB Hub
  Device 0.2, Port 6.1, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.3, Port 6.2, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.4, Port 6.3, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.5, Port 6.4, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.6, Port 6.5, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.7, Port 6.6, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.8, Port 6.7, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.9, Port 6.8, Speed 12 Mb/s, Product QEMU USB Hub
  Device 0.10, Port 6.8.1, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.11, Port 6.8.2, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.12, Port 6.8.3, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.13, Port 6.8.4, Speed 12 Mb/s, Product QEMU USB MSD

3.check usb device info in guest
please look screenshot in attachments

Actual results:
only 6 usb device would be recognized(5 ehci device, 1 uhci device).

Expected results:
all 16 usb device will be recognized.

Additional info:
linux guest won't hit this issue.
rhel6 host won't hit this issue.
Comment 1 Xu Han 2013-08-27 11:44:04 UTC 
Created attachment 790922 [details]
usb device info screenshot in rhel7 host
Comment 2 Xu Han 2013-08-27 11:44:49 UTC 
Created attachment 790923 [details]
usb device info screenshot in rhel6 host
Comment 4 Gerd Hoffmann 2013-08-27 15:36:57 UTC 
root cause: upstream commit a309ee6e0a256f690760abfba44fceaa52a7c2f3
that one fixes a serious issue with xhci though, so simply reverting
doesn't cut it.  need to dig into xhci, guess we don't do intr endpoint intervals correctly.
Comment 5 FuXiangChun 2013-08-28 08:21:21 UTC 
Re-tested this bug. Start with this version qemu-kvm-1.5.0-1.el7.x86_64 QE found this problem.　Before this version, qemu-kvm don't hit this issue. so I added regression to Keywords
Comment 8 Gerd Hoffmann 2013-08-30 08:40:14 UTC 
Bad patch has been backported to rhel-6.  As there is no xhci in rhel6 we can simply revert it there.

rhel-7 needs xhci being fixed first.  patches posted upstream meanwhile, backport to be done once they are in.
Comment 9 Gerd Hoffmann 2013-09-12 09:40:30 UTC 
patches merged upstream, backport done, patches posted.
Comment 10 Miroslav Rezanina 2013-10-17 10:00:08 UTC 
Fix included in qemu-kvm-1.5.3-10.el7
Comment 12 Qian Guo 2013-10-25 07:09:26 UTC 
Reproduce this bug with components:
qemu-kvm-1.5.3-4.el7.x86_64

Steps:
1.Boot windows7 64bit guest with 16 usb disks like this:
# /usr/libexec/qemu-kvm -M pc-i440fx-rhel7.0.0 -cpu Opteron_G3 -enable-kvm -m 2G -smp 4,sockets=2,cores=2,threads=1 -name usb-test -rtc base=localtime,clock=host,driftfix=slew -drive file=/home/win7-64-virtio.qcow2,if=none,id=drive-system-disk,format=qcow2,cache=none,aio=native,werror=stop,rerror=stop -device ide-hd,bus=ide.0,unit=0,drive=drive-system-disk,id=system-disk,bootindex=1 -qmp tcp:0:4444,server,nowait -k en-us -boot menu=on -vnc :1 -vga std -monitor stdio \
-readconfig /home/ich9.cfg \
-drive file=/home/disk1.qcow2,if=none,id=drive-usb-0-1,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-1,id=usb-0-1,removable=on \
-drive file=/home/disk2.qcow2,if=none,id=drive-usb-0-2,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-2,id=usb-0-2,removable=on \
-drive file=/home/disk3.qcow2,if=none,id=drive-usb-0-3,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-3,id=usb-0-3,removable=on \
-drive file=/home/disk4.qcow2,if=none,id=drive-usb-0-4,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-4,id=usb-0-4,removable=on \
-drive file=/home/disk5.qcow2,if=none,id=drive-usb-0-5,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-5,id=usb-0-5,removable=on \
-drive file=/home/disk6.qcow2,if=none,id=drive-usb-0-6,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-6,id=usb-0-6,removable=on \
-drive file=/home/disk7.qcow2,if=none,id=drive-usb-0-7,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-7,id=usb-0-7,removable=on \
-drive file=/home/disk8.qcow2,if=none,id=drive-usb-0-8,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-8,id=usb-0-8,removable=on \
-drive file=/home/disk9.qcow2,if=none,id=drive-usb-0-9,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-9,id=usb-0-9,removable=on \
-drive file=/home/disk10.qcow2,if=none,id=drive-usb-0-10,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-10,id=usb-0-10,removable=on \
-drive file=/home/disk11.qcow2,if=none,id=drive-usb-0-11,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-11,id=usb-0-11,removable=on \
-drive file=/home/disk12.qcow2,if=none,id=drive-usb-0-12,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-12,id=usb-0-12,removable=on \
-drive file=/home/disk13.qcow2,if=none,id=drive-usb-0-13,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-13,id=usb-0-13,removable=on \
-drive file=/home/disk14.qcow2,if=none,id=drive-usb-0-14,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-14,id=usb-0-14,removable=on \
-drive file=/home/disk15.qcow2,if=none,id=drive-usb-0-15,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-15,id=usb-0-15,removable=on \
-drive file=/home/disk16.qcow2,if=none,id=drive-usb-0-16,media=disk,format=qcow2,aio=native -device usb-storage,drive=drive-usb-0-16,id=usb-0-16,removable=on \

2.Check via hmp:
(qemu) info usb
  Device 0.1, Port 1, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.2, Port 2, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.3, Port 3, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.4, Port 4, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.5, Port 5, Speed 480 Mb/s, Product QEMU USB MSD
  Device 0.1, Port 6, Speed 12 Mb/s, Product QEMU USB Hub
  Device 0.2, Port 6.1, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.3, Port 6.2, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.4, Port 6.3, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.5, Port 6.4, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.6, Port 6.5, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.7, Port 6.6, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.8, Port 6.7, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.9, Port 6.8, Speed 12 Mb/s, Product QEMU USB Hub
  Device 0.10, Port 6.8.1, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.11, Port 6.8.2, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.12, Port 6.8.3, Speed 12 Mb/s, Product QEMU USB MSD
  Device 0.13, Port 6.8.4, Speed 12 Mb/s, Product QEMU USB MSD

3.Check the usb disks in windows guest:
result: there're only 6 usb disks

Verify this bug with component:
qemu-kvm-1.5.3-10.el7.x86_64

same steps as above

Result: from the guest inside, there're 16 usb disks.

So, according to above all, the bug is fixed by qemu-kvm-1.5.3-10.el7.x86_64.
Comment 13 Qian Guo 2013-10-25 07:16:01 UTC 
Created attachment 816027 [details]
verify this bug with qemu-kvm-1.5.3-10.el7.x86_64, attach the screenshot
Comment 15 Ludek Smid 2014-06-13 10:42:26 UTC 
This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.
Note You need to log in before you can comment on or make changes to this bug.