(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Mon, 23 Feb 2009 22:08:37 -0800 (PST) bugme-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=12768 There's additional info at the link. > Summary: usb_alloc_urb() leaks memory together with uvcvideo > driver > Product: Drivers > Version: 2.5 > KernelVersion: 2.6.28 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: USB > AssignedTo: greg@xxxxxxxxx > ReportedBy: nm127@xxxxxxxxxxx > > > Latest working kernel version: > Earliest failing kernel version: > Distribution: > Hardware Environment: EeePC 901 > Software Environment: Debian 5.0 > Problem Description: > > Steps to reproduce: > 1. Boot the system > 2. start an xterm window and execute the following command: > > $ while true; do clear; cat /proc/slab_allocators |grep usb_alloc; sleep 1; > done > > This will print out similar lines each second: > > size-2048: 18 usb_alloc_dev+0x1d/0x212 [usbcore] > size-2048: 2280 usb_alloc_urb+0xc/0x2b [usbcore] > size-1024: 85 usb_alloc_urb+0xc/0x2b [usbcore] > size-128: 10 usb_alloc_urb+0xc/0x2b [usbcore] > > 3. Start xawtv, this will show the picture of the webcam > 4. Exit xawtv > > Current result: > In the output of /proc/slab_allocators the number of blocks allocated by > usb_alloc_urb() increases, however, the xawtv is no longer running: > > size-2048: 18 usb_alloc_dev+0x1d/0x212 [usbcore] > size-2048: 2280 usb_alloc_urb+0xc/0x2b [usbcore] > size-1024: 100 usb_alloc_urb+0xc/0x2b [usbcore] > size-128: 10 usb_alloc_urb+0xc/0x2b [usbcore] > > Each time xawtv is started and stopped the value increases at the > usb_alloc_urb(). > > Expected result: the same memory usage is reached again after xawtv exited. > I assume this is a v4l bug and not a USB core bug? -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
