Re: Fwd: improve support for usb board camera
The kernel version is 3.13.0-32-generic Here is one example: BUG: unable to handle kernel NULL pointer dereference at... IP: [...] xhci_stream_id_to_ring+0x40/0x60 PGD 362a1067 PUD c9f49067 PMD 0 Oops: [#1] SMP Modules linked in: elo_mt_input_mod(0F) eeepc_wmi ... CPU: 1 PID: 20665 Comm: ... Tainted: GF W 0 3.13.0-32-generic #57-Ubuntu Hardware name: ASUS All Series/B85M-E, BIOS 2105 08/08/2014 task: ... RIP: ... xhci_stream_id_to_ring+0x40/0x60 ... Call Trace: IRQ handle_cmd_completion xhci_irq xhci_mis_irq handle_irq_event_percpu handle_irq_event handle_edge_irq handle_irq do_IRQ common_interrupt EOI ... Kernel panic - not syncing: Fatal exception in interrupt Shutting down cpus with MMI drm_kms_helper: panic occured, switching back to text console Thank you for your help and let me know if I should still contact the media mailing list. Kris On Wed, Dec 10, 2014 at 9:00 PM, Greg KH gre...@linuxfoundation.org wrote: On Wed, Dec 10, 2014 at 07:35:48PM -0500, Kristopher Borer wrote: Hello, I am looking to improve support for a USB board camera. It currently works fairly well, but we occasionally cause kernel panics while using OpenCV on Ubuntu 14.04. What kernel version is that, and what is the oops report show? Here is the device: e-consystems.com/5mp-usb-cameraboard.asp We do not need an NDA. We can provide hardware, test scripts, and we have some internal engineers who can help out. You might do best by posting this on the linux-me...@vger.kernel.org mailing list, as that is where the authors for that driver are, it might just be a simple quirk or bugfix is needed to get this resolved. If that doesn't work out, please let me know. thanks, greg k-h ___ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
Re: Fwd: improve support for usb board camera
On Thu, Dec 11, 2014 at 07:43:15AM -0500, Kristopher Borer wrote: The kernel version is 3.13.0-32-generic Ick, that's 68 thousand patches old (i.e. one year...) Have you tried the 3.18 kernel release to see if it is better, because: Here is one example: BUG: unable to handle kernel NULL pointer dereference at... IP: [...] xhci_stream_id_to_ring+0x40/0x60 PGD 362a1067 PUD c9f49067 PMD 0 Oops: [#1] SMP Modules linked in: elo_mt_input_mod(0F) eeepc_wmi ... CPU: 1 PID: 20665 Comm: ... Tainted: GF W 0 3.13.0-32-generic #57-Ubuntu Hardware name: ASUS All Series/B85M-E, BIOS 2105 08/08/2014 task: ... RIP: ... xhci_stream_id_to_ring+0x40/0x60 ... Call Trace: IRQ handle_cmd_completion xhci_irq xhci_mis_irq handle_irq_event_percpu handle_irq_event handle_edge_irq handle_irq do_IRQ common_interrupt EOI ... Kernel panic - not syncing: Fatal exception in interrupt Shutting down cpus with MMI That's a xhci (the USB 3 controller) issue, and there have been lots of xhci fixes in the past year as new controllers have been released and we have fixed the bugs in them. And you are using USB 3 streams in your USB 2 camera? That doesn't make sense. What camera driver is this? Anyway, please try 3.18, that should work. If not, let's drag this over to the linux-...@vger.kernel.org mailing list as the xhci developers should learn about this, it doesn't look like a media driver issue just yet. thanks, greg k-h ___ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
Re: Fwd: improve support for usb board camera
On Wed, Dec 10, 2014 at 07:35:48PM -0500, Kristopher Borer wrote: Hello, I am looking to improve support for a USB board camera. It currently works fairly well, but we occasionally cause kernel panics while using OpenCV on Ubuntu 14.04. What kernel version is that, and what is the oops report show? Here is the device: e-consystems.com/5mp-usb-cameraboard.asp We do not need an NDA. We can provide hardware, test scripts, and we have some internal engineers who can help out. You might do best by posting this on the linux-me...@vger.kernel.org mailing list, as that is where the authors for that driver are, it might just be a simple quirk or bugfix is needed to get this resolved. If that doesn't work out, please let me know. thanks, greg k-h ___ devel mailing list de...@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
