leak reported by gspca_core.c driver for webcams

[LGB [Gábor Lénárt]]

I'm using a Logitech QuickCam messenger ("Bus 001 Device 005: ID 046d:08da Logitech, Inc. " according to lsusb) web camera with Ubuntu gutsy on i386 (Linux oxygene 2.6.22-14-generic #1 SMP Sun Oct 14 23:05:12 GMT 2007 i686 GNU/Linux). With skype (and other softwares using webcamera too) streaming video from webcam sometimes stops for a while when there's lots of messages in kernel log like:

[ 5238.284000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[ 5238.288000] ohci_hcd 0000:00:02.0: leak ed dfdc3100 (#81) state 2
[ 5241.652000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[ 5241.660000] ohci_hcd 0000:00:02.0: leak ed dfdc3140 (#81) state 2
[ 5288.348000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[ 5288.352000] ohci_hcd 0000:00:02.0: leak ed dfdc3180 (#81) state 2
[ 5291.560000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[ 5291.564000] ohci_hcd 0000:00:02.0: leak ed dfdc31c0 (#81) state 2
[ 5295.356000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[ 5295.364000] ohci_hcd 0000:00:02.0: leak ed dfdc3200 (#81) state 2
[ 5298.632000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[ 5298.636000] ohci_hcd 0000:00:02.0: leak ed dfdc3240 (#81) state 2
[ 5302.120000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[ 5302.124000] ohci_hcd 0000:00:02.0: leak ed dfdc3280 (#81) state 2
[ 5305.244000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[ 5305.248000] ohci_hcd 0000:00:02.0: leak ed dfdc32c0 (#81) state 2
[12004.840000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[12004.848000] ohci_hcd 0000:00:02.0: leak ed dfdc3300 (#81) state 2
[12008.896000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[12008.900000] ohci_hcd 0000:00:02.0: leak ed dfdc3340 (#81) state 2
[12042.236000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[12042.240000] ohci_hcd 0000:00:02.0: leak ed dfdc3380 (#81) state 2
[12046.180000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[12046.184000] ohci_hcd 0000:00:02.0: leak ed dfdc33c0 (#81) state 2
[12050.680000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[12050.684000] ohci_hcd 0000:00:02.0: leak ed dfdc3400 (#81) state 2
[12054.676000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[12054.680000] ohci_hcd 0000:00:02.0: leak ed dfdc3440 (#81) state 2
[12058.608000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[12058.612000] ohci_hcd 0000:00:02.0: leak ed dfdc3480 (#81) state 2
[12062.592000] /build/buildd/linux-ubuntu-modules-2.6.22-2.6.22/debian/build/build-generic/media/gspcav1/gspca_core.c: init isoc: usb_submit_urb(0) ret -28
[12062.592000] ohci_hcd 0000:00:02.0: leak ed dfdc34c0 (#81) state 2

I know that skype is not an open source software (and not supported by the Ubuntu team at all!), but I think this can be the fault of the webcam usb driver in kernel as well. However only guessing. Thanks a lot in advnace (and btw, skype version is 2.0.0.27 if it counts ...)

[sbur (ch-mere-porteuse)]

I'm a newbie to Linux, but want to learn and understand. My question may be simple, but I need a clear and simple set of instructions.

I have a Logitech 046d:08da webcam. I can't seem to do anything with it. I hae kernel 2.6.27-7-generic. I have tried the maxhard gspcacav1 driver, but learned that it works only up to 2.6.16, if I'm not mistaken. When I try to do any webcam experience with Yahoo or Skype, I can see the other person, but the other person can't see me or hear me. Also, under MSN messenger, when the other person tries to do webcam with me, he gets a response that I refused the webcam.

Who can and is willing to help a newbie?

<email address hidden>

[Leann Ogasawara (leannogasawara)]

[This is an automated message. Apologies if it has reached you inappropriately.]

This bug was reported against the linux-meta package when it likely should have been reported against the linux package instead. We are automatically transitioning this to the linux kernel package so that the appropriate teams are notified and made aware of this issue. Thanks.

[kernel-janitor (kernel-janitor)]

Hi lgb,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/releases/ . Please then run following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux-image-`uname -r` 176545

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Jeremy Foshee (jeremyfoshee)]

This bug report was marked as Incomplete and has not had any updated comments for quite some time. As a result this bug is being closed. Please reopen if this is still an issue in the current Ubuntu release http://www.ubuntu.com/getubuntu/download . Also, please be sure to provide any requested information that may have been missing. To reopen the bug, click on the current status under the Status column and change the status back to "New". Thanks.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]