Turning USB (Philips i740) camera on and off make kernel oops (2.6.5 SMP).

From: Justin Piszcz (jpiszcz_at_lucidpixels.com)
Date: 05/30/04

  • Next message: Francois Romieu: "Re: Linux 2.6.7-rc2" 
    Date:	Sun, 30 May 2004 07:08:20 -0400 (EDT)
To: linux-kernel@vger.kernel.org

    System.map-2.6.5-8: http://209.81.41.149/~jpiszcz/System.map-2.6.5-8.bz2

    $ cat oops | ksymoops > oops.out
    ksymoops 2.4.9 on i686 2.6.5. Options used
          -V (default)
          -k /proc/ksyms (default)
          -l /proc/modules (default)
          -o /lib/modules/2.6.5/ (default)
          -m /usr/src/linux/System.map (default)

    Warning: You did not tell me where to find symbol information. I will
    assume that the log matches the kernel and modules that are running
    right now and I'll use the default options above for symbol resolution.
    If the current kernel and/or modules do not match the log, you can get
    more accurate output by telling me the kernel version and where to find
    map, modules, ksyms etc. ksymoops -h explains the options.

    Error (regular_file): read_ksyms stat /proc/ksyms failed
    No modules in ksyms, skipping objects
    No ksyms, skipping lsmod
    Unable to handle kernel NULL pointer dereference at virtual address 0000006c
    c019307e
    *pde = 00000000
    Oops: 0002 [#1]
    CPU: 1
    EIP: 0060:[<c019307e>] Tainted: P
    Using defaults from ksymoops -t elf32-i386 -a i386
    EFLAGS: 00010246 (2.6.5)
    eax: 00000000 ebx: 00000000 ecx: 0000006c edx: f3d6fb80
    esi: c0424ebb edi: f7010793 ebp: ffffffff esp: f3509e10
    ds: 007b es: 007b ss: 0068
    Stack: 0000003d 000000d0 f74f6280 f7010780 00000004 f3d6fb80 f8acdc50 f6531994
            00000000 f65319ec c025fbc3 f8acdc1c f65319b8 f65319bc f8acdc00 c025fc2c
            f6531994 f8acdc00 f8acdc38 f6531994 f8ae4a44 c025fc84 00200200 f345d740
    Call Trace:
      [<c025fbc3>] device_bind_driver+0x3b/0x40
      [<c025fc2c>] bus_match+0x64/0x76
      [<c025fc84>] device_attach+0x46/0xad
      [<c025fe33>] bus_add_device+0x5b/0xa0
      [<c025eebc>] device_add+0xa1/0x131
      [<f8ad6449>] usb_set_configuration+0x1d7/0x267 [usbcore]
      [<f8ad0e37>] usb_new_device+0x288/0x3d5 [usbcore]
      [<f8ad2618>] hub_port_connect_change+0x2b8/0x37a [usbcore]
      [<f8ad2ea8>] hub_thread+0x2b4/0x575 [usbcore]
      [<c011c876>] default_wake_function+0x0/0x18
      [<f8ad2bf4>] hub_thread+0x0/0x575 [usbcore]
      [<c01043f5>] kernel_thread_helper+0x5/0xb
    Code: f0 ff 48 6c 0f 88 b9 00 00 00 8b 44 24 34 89 44 24 04 89 14

    >>EIP; c019307e <sysfs_create_link+121/1d4> <=====

    >>edx; f3d6fb80 <pg0+33857b80/3fae6000>
    >>esi; c0424ebb <devices_subsys+1b/58>
    >>edi; f7010793 <pg0+36af8793/3fae6000>
    >>ebp; ffffffff <__kernel_rt_sigreturn+1bbf/????>
    >>esp; f3509e10 <pg0+32ff1e10/3fae6000>

    Trace; c025fbc3 <device_bind_driver+3b/40>
    Trace; c025fc2c <bus_match+64/76>
    Trace; c025fc84 <device_attach+46/ad>
    Trace; c025fe33 <bus_add_device+5b/a0>
    Trace; c025eebc <device_add+a1/131>
    Trace; f8ad6449 <pg0+385be449/3fae6000>
    Trace; f8ad0e37 <pg0+385b8e37/3fae6000>
    Trace; f8ad2618 <pg0+385ba618/3fae6000>
    Trace; f8ad2ea8 <pg0+385baea8/3fae6000>
    Trace; c011c876 <default_wake_function+0/18>
    Trace; f8ad2bf4 <pg0+385babf4/3fae6000>
    Trace; c01043f5 <kernel_thread_helper+5/b>

    Code; c019307e <sysfs_create_link+121/1d4>
    00000000 <_EIP>:
    Code; c019307e <sysfs_create_link+121/1d4> <=====
        0: f0 ff 48 6c lock decl 0x6c(%eax) <=====
    Code; c0193082 <sysfs_create_link+125/1d4>
        4: 0f 88 b9 00 00 00 js c3 <_EIP+0xc3>
    Code; c0193088 <sysfs_create_link+12b/1d4>
        a: 8b 44 24 34 mov 0x34(%esp),%eax
    Code; c019308c <sysfs_create_link+12f/1d4>
        e: 89 44 24 04 mov %eax,0x4(%esp)
    Code; c0193090 <sysfs_create_link+133/1d4>
       12: 89 14 00 mov %edx,(%eax,%eax,1)

    1 warning and 1 error issued. Results may not be reliable.
    hub 4-0:1.0: USB hub found
    hub 4-0:1.0: 2 ports detected
    usb 1-2: new full speed USB device using address 2
    pwc Philips PCVC740K (ToUCam Pro) USB webcam detected.
    drivers/usb/core/usb.c: deregistering driver audio
    pwc Registered as /dev/video0.
    usbaudio: device 2 audiocontrol interface 1 has 1 input and 0 output
    AudioStream
    ing interfaces
    usbaudio: device 2 interface 2 altsetting 0 FORMAT_TYPE descriptor not
    found
    usbaudio: valid input sample rate 44100
    usbaudio: device 2 interface 2 altsetting 1: format 0x00000010 sratelo
    44100 sra
    tehi 44100 attributes 0x00
    usbaudio: valid input sample rate 22050
    usbaudio: device 2 interface 2 altsetting 2: format 0x00000010 sratelo
    22050 sra
    tehi 22050 attributes 0x00
    usbaudio: valid input sample rate 11025
    usbaudio: device 2 interface 2 altsetting 3: format 0x00000010 sratelo
    11025 sra
    tehi 11025 attributes 0x00
    usbaudio: valid input sample rate 8000
    usbaudio: device 2 interface 2 altsetting 4: format 0x00000010 sratelo
    8000 srat
    ehi 8000 attributes 0x00
    usbaudio: registered dsp 14,35
    usbaudio: constructing mixer for Terminal 3 type 0x0101
    usbaudio: warning: found 1 of 0 logical channels.
    usbaudio: assuming the channel found is the master channel (got a Philips
    camera
    ?). Should be fine.
    usbaudio: registered mixer 14,16
    usb_audio_parsecontrol: usb_audio_state at f59dea80
    Unable to handle kernel NULL pointer dereference at virtual address
    0000006c
      printing eip:
    c019307e
    *pde = 00000000
    Oops: 0002 [#1]
    PREEMPT SMP
    CPU: 1
    EIP: 0060:[<c019307e>] Tainted: P
    EFLAGS: 00010246 (2.6.5)
    EIP is at sysfs_create_link+0x121/0x1d4
    eax: 00000000 ebx: 00000000 ecx: 0000006c edx: f3d6fb80
    esi: c0424ebb edi: f7010793 ebp: ffffffff esp: f3509e10
    ds: 007b es: 007b ss: 0068
    Process khubd (pid: 24628, threadinfo=f3508000 task=f345d740)
    Stack: 0000003d 000000d0 f74f6280 f7010780 00000004 f3d6fb80 f8acdc50
    f6531994
            00000000 f65319ec c025fbc3 f8acdc1c f65319b8 f65319bc f8acdc00
    c025fc2c
            f6531994 f8acdc00 f8acdc38 f6531994 f8ae4a44 c025fc84 00200200
    f345d740
    Call Trace:
      [<c025fbc3>] device_bind_driver+0x3b/0x40
      [<c025fc2c>] bus_match+0x64/0x76
      [<c025fc84>] device_attach+0x46/0xad
      [<c025fe33>] bus_add_device+0x5b/0xa0
      [<c025eebc>] device_add+0xa1/0x131
      [<f8ad6449>] usb_set_configuration+0x1d7/0x267 [usbcore]
      [<f8ad0e37>] usb_new_device+0x288/0x3d5 [usbcore]
      [<f8ad2618>] hub_port_connect_change+0x2b8/0x37a [usbcore]
      [<f8ad2ea8>] hub_thread+0x2b4/0x575 [usbcore]
      [<c011c876>] default_wake_function+0x0/0x18
      [<f8ad2bf4>] hub_thread+0x0/0x575 [usbcore]
      [<c01043f5>] kernel_thread_helper+0x5/0xb

    Code: f0 ff 48 6c 0f 88 b9 00 00 00 8b 44 24 34 89 44 24 04 89 14

    $ cat `which camon`
    #!/bin/sh

    # Load the usb core.
    modprobe usbcore

    # Load the initial PWC module.
    modprobe pwc size=vga fps=30 mbufs=4 power_save=0 compression=0
    #modprobe pwc size=cif fps=30 mbufs=4 power_save=0 compression=0
    #modprobe pwc size=sif fps=30 mbufs=4 power_save=0 compression=0

    # Force load the decompression module.
    #insmod -f /appc/kernel/usb-pwcx-8.2.2/pwcx-i386.o > /dev/null 2>&1
    insmod -f /appc/kernel/pwcx-8.4/2.4.23/gcc-3.2/pwcx.o > /dev/null 2>&1

    # Setup the audio.
    modprobe audio

    # Load the USB driver.
    modprobe uhci-hcd

    # rmmod uhci_hcd
    (hangs)
    # rmmod -f uhci-hcd
    ERROR: Removing 'uhci_hcd': Device or resource busy

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  • Next message: Francois Romieu: "Re: Linux 2.6.7-rc2"

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