046d:0825 Using webcam fills log with xhci_hcd errors

[Martijn vdS]

My kernel log fills up with messages like this (several dozens of times per second) when I'm using my Logitech webcam:

Bus 001 Device 009: ID 046d:0825 Logitech, Inc. Webcam C270

[39578.723588] xhci_hcd 0000:00:14.0: ERROR Transfer event TRB DMA ptr not part of current TD

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.10.0-6-generic 3.10.0-6.17
ProcVersionSignature: Ubuntu 3.10.0-6.17-generic 3.10.3
Uname: Linux 3.10.0-6-generic x86_64
ApportVersion: 2.11-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: martijn 2421 F.... pulseaudio
 /dev/snd/controlC2: martijn 2421 F.... pulseaudio
 /dev/snd/pcmC2D0p: martijn 2421 F...m pulseaudio
 /dev/snd/controlC0: martijn 2421 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Date: Fri Aug 2 06:56:16 2013
HibernationDevice: RESUME=UUID=024bd461-597f-4fdc-aa42-dd226e9d554b
InstallationDate: Installed on 2013-06-02 (60 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
IwConfig:
 eth0 no wireless extensions.

 lo no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. Z87X-OC
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.10.0-6-generic root=UUID=47694405-80e7-45ce-b6b1-c8b69d2be423 ro intel_pstate=enable quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.10.0-6-generic N/A
 linux-backports-modules-3.10.0-6-generic N/A
 linux-firmware 1.112
RfKill:

SourcePackage: linux
UpgradeStatus: Upgraded to saucy on 2013-06-05 (57 days ago)
dmi.bios.date: 07/18/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F5
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z87X-OC-CF
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF5:bd07/18/2013:svnGigabyteTechnologyCo.,Ltd.:pnZ87X-OC:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnZ87X-OC-CF:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: Z87X-OC
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[Martijn vdS (martijn)]

It seems like this patch might contain a fix: http://lkml.indiana.edu/hypermail/linux/kernel/1307.0/00015.html

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

Martijn vdS, would you have any actual problems using your webcam? If so, could you please describe them specifically?

[Martijn vdS (martijn)]

The webcam works fine. It just spams the log (quite rapidly, too), probably because the xhci controller is hci_version 1.0, which does some things differently from 0.96.

The changelog of the linked patch describes this.

[Martijn vdS (martijn)]

The patch is in Linus' git tree: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=07f3cb7c28bf3f4dd80bfb136cf45810c46ac474

[Martijn vdS (martijn)]

I've installed 3.11.0-031100rc3-generic (3.11.0-031100rc3.201307290035) from http://kernel.ubuntu.com/~kernel-ppa/mainline/

This fixes the problem.

[Joseph Salisbury (jsalisbury)]

This issue will be fixed when Saucy is rebased to upstream 3.11. It will also be fixed in the stable kernels, since the commit was Cc'd to stable.