OOPS in ov511 driver - Kernel

This is a discussion on OOPS in ov511 driver - Kernel ; Hey! I got following oops when unplugging some Creative-labeled webcam using ov511 driver. Machine is Core2 Duo 64-bit, Gentoo Linux, kernel is 2.6.25-05301-gc3bf9bc, gcc is 4.2.3 (Gentoo 4.2.3 p1.0) usb 2-1: USB disconnect, address 7 ov511: ERROR: urb->status=-108: Unknown ov511: ...

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Thread: OOPS in ov511 driver

  1. OOPS in ov511 driver

    Hey!

    I got following oops when unplugging some Creative-labeled webcam using
    ov511 driver. Machine is Core2 Duo 64-bit, Gentoo Linux, kernel is
    2.6.25-05301-gc3bf9bc, gcc is 4.2.3 (Gentoo 4.2.3 p1.0)

    usb 2-1: USB disconnect, address 7
    ov511: ERROR: urb->status=-108: Unknown
    ov511: usb_submit_urb() ret -19
    ov511: ERROR: urb->status=-108: Unknown
    ov511: usb_submit_urb() ret -19
    usb 2-1: new full speed USB device using uhci_hcd and address 8
    usb 2-1: configuration #1 chosen from 1 choice
    ov511: USB OV511+ video device found
    ov511: model: Creative Labs WebCam 3
    ov511: Sensor is an OV7620
    ov511: Device at usb-0000:00:1d.0-1 registered to minor 0
    BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8
    IP: [] mutex_lock+0x0/0xb
    PGD 33b6a067 PUD 2e462067 PMD 0
    Oops: 0002 [1] PREEMPT SMP
    CPU 0
    Modules linked in: ov511 videodev v4l1_compat iwl3945
    Pid: 26378, comm: python Not tainted 2.6.25-05301-gc3bf9bc #59
    RIP: 0010:[] [] mutex_lock+0x0/0xb
    RSP: 0018:ffff810022cefee0 EFLAGS: 00010293
    RAX: ffff810022df9800 RBX: 00000000000000a8 RCX: 0000000000000000
    RDX: 0000000000000000 RSI: ffff81002990c540 RDI: 00000000000000a8
    RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
    R10: 0000000000000009 R11: 0000000000000202 R12: ffff81002990c540
    R13: ffff81003dd9a000 R14: ffff81003eabc900 R15: 00007f1bccd47b44
    FS: 00007f1bd3f0a6f0(0000) GS:ffffffff806c2000(0000) knlGS:0000000000000000
    CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
    CR2: 00000000000000a8 CR3: 000000002e79b000 CR4: 00000000000006e0
    DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
    DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
    Process python (pid: 26378, threadinfo ffff810022cee000, task ffff81001dc72690)
    Stack: ffffffffa002a067 0000000000000008 ffff81002990c540 ffff81001ffc2960
    ffffffff80279453 ffff81002990c540 ffff81002635b340 0000000000000000
    ffff81002635b3c0 00007f1bcdb02d80 ffffffff80276c7e ffff81002635b340
    Call Trace:
    [] v511v51x_v4l1_close+0x47/0x133
    [] __fput+0xa1/0x147
    [] filp_close+0x5d/0x65
    [] sys_close+0x76/0xb9
    [] system_call_after_swapgs+0x7b/0x80


    Code: 1c 24 44 89 64 24 08 48 c7 44 24 20 45 25 24 80 48 89 44 24 28 48 89 44 24 30 e8 23 ff ff ff 48 83 c4 48 5b 41 5c 41 5d 41 5e c3 ff 0f 79 05 e8 68 01 00 00 c3 f0 ff 07 7f 05 e8 6d 01 00 00
    RIP [] mutex_lock+0x0/0xb
    RSP
    CR2: 00000000000000a8
    ---[ end trace ca143223eefdc828 ]---

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  2. Re: OOPS in ov511 driver

    Am Dienstag 13 Mai 2008 10:09:57 schrieb Priit Laes:
    > Hey!
    >
    > I got following oops when unplugging some Creative-labeled webcam using
    > ov511 driver. Machine is Core2 Duo 64-bit, Gentoo Linux, kernel is
    > 2.6.25-05301-gc3bf9bc, gcc is 4.2.3 (Gentoo 4.2.3 p1.0)
    >
    > usb 2-1: USB disconnect, address 7
    > ov511: ERROR: urb->status=-108: Unknown
    > ov511: usb_submit_urb() ret -19
    > ov511: ERROR: urb->status=-108: Unknown
    > ov511: usb_submit_urb() ret -19
    > usb 2-1: new full speed USB device using uhci_hcd and address 8
    > usb 2-1: configuration #1 chosen from 1 choice
    > ov511: USB OV511+ video device found
    > ov511: model: Creative Labs WebCam 3
    > ov511: Sensor is an OV7620
    > ov511: Device at usb-0000:00:1d.0-1 registered to minor 0


    Are you replugging the device?

    Regards
    Oliver

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  3. Re: OOPS in ov511 driver

    Ühel kenal päeval, T, 2008-05-13 kell 11:07, kirjutas Oliver Neukum:
    > Am Dienstag 13 Mai 2008 10:09:57 schrieb Priit Laes:
    > > Hey!
    > >
    > > I got following oops when unplugging some Creative-labeled webcam using
    > > ov511 driver. Machine is Core2 Duo 64-bit, Gentoo Linux, kernel is
    > > 2.6.25-05301-gc3bf9bc, gcc is 4.2.3 (Gentoo 4.2.3 p1.0)
    > >
    > > usb 2-1: USB disconnect, address 7
    > > ov511: ERROR: urb->status=-108: Unknown
    > > ov511: usb_submit_urb() ret -19
    > > ov511: ERROR: urb->status=-108: Unknown
    > > ov511: usb_submit_urb() ret -19
    > > usb 2-1: new full speed USB device using uhci_hcd and address 8
    > > usb 2-1: configuration #1 chosen from 1 choice
    > > ov511: USB OV511+ video device found
    > > ov511: model: Creative Labs WebCam 3
    > > ov511: Sensor is an OV7620
    > > ov511: Device at usb-0000:00:1d.0-1 registered to minor 0

    >
    > Are you replugging the device?


    Yeah, when looking at the dmesg output, probably something like this
    happened.
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