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Message #29508
[Bug 1190120] Re: Unbind not working as expected
Matt Bruzek, this bug report is being closed due to your last comment
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1190120/comments/28
regarding this being addressed via kernel parameter. For future
reference you can manage the status of your own bugs by clicking on the
current status in the yellow line and then choosing a new status in the
revealed drop down box. You can learn more about bug statuses at
https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time
to report this bug and helping to make Ubuntu better. Please submit any
future bugs you may find.
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1190120
Title:
Unbind not working as expected
Status in “linux” package in Ubuntu:
Invalid
Bug description:
I am trying to unbind a PCI device I received a kernel Oops. I was following instructions described in this KVM document:
http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM
When I get to the unbind step:
echo 0000:01:00.0 > /sys/bus/pci/devices/0000:01:00.0/driver/unbind
In Raring I got a kernel Oops. Please note at this point I am not
running the kvm guest, just trying to unbind the PCI device. I do have
VT-d enabled in the bios and a processor that supports IOMMU. This
problem is repeatable and appears to be isolated to the unbind
command.
However, in Saucy, I do not get a kernel oops, but executing unbind as
root puts back into non-root user account. After going back as root, I
am not able to perform the next step to bind the device.
root@ubuntu:/home/ubuntu# echo 0000:01:00.0 > /sys/bus/pci/drivers/pci-stub/bind
bash: echo: write error: No such device
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: linux-image-3.8.0-23-generic 3.8.0-23.34
ProcVersionSignature: Ubuntu 3.8.0-23.34-generic 3.8.11
Uname: Linux 3.8.0-23-generic x86_64
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: bruzer 2169 F.... pulseaudio
/dev/snd/controlC1: bruzer 2169 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Date: Tue Jun 11 21:43:14 2013
HibernationDevice: RESUME=UUID=4b6b5242-2b8c-46e6-9d91-3168bcee1249
InstallationDate: Installed on 2013-06-07 (4 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
virbr0 no wireless extensions.
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB:
0 inteldrmfb
1 nouveaufb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-23-generic root=UUID=3ee858ac-5064-4c88-b187-2629fedf6f9c ro intel_iommu=on quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.8.0-23-generic N/A
linux-backports-modules-3.8.0-23-generic N/A
linux-firmware 1.106
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/03/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.20
dmi.board.name: Z87M Extreme4
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.20:bd05/03/2013:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ87MExtreme4:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
---
ApportVersion: 2.12.1-0ubuntu3
Architecture: amd64
CasperVersion: 1.336
DistroRelease: Ubuntu 13.10
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130904)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
MarkForUpload: True
Package: linux (not installed)
ProcFB: 1 inteldrmfb
ProcKernelCmdLine: file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
ProcVersionSignature: Ubuntu 3.11.0-4.9-generic 3.11.0-rc7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Daemon not responding.
RelatedPackageVersions:
linux-restricted-modules-3.11.0-4-generic N/A
linux-backports-modules-3.11.0-4-generic N/A
linux-firmware 1.113
RfKill:
Tags: saucy
Uname: Linux 3.11.0-4-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
dmi.bios.date: 07/05/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.60
dmi.board.name: Z87M Extreme4
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.60:bd07/05/2013:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ87MExtreme4:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
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