Got the foolowing oops with a Trust Sp@ce C@m USB webcam, sensor is a
ov720 and it uses the ov511 driver. To reproduce it i open a netscape
on a page which grab pictures from the web-cam, as soon as grabbing starts
got the oops on serial console:
ksymoops 2.3.4 on i686 2.4.0-test9. Options used
-V (default)
-k /proc/ksyms (default)
-l /proc/modules (default)
-o /lib/modules/2.4.0-test9/ (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.
Unable to handle kernel NULL pointer dereference at virtual address 00a0
c8c8165d
*pde =
Oops:
CPU:0
EIP:0010:[]
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00210246
eax: ebx: c2a08980 ecx: edx: 006b
esi: c2a08980 edi: c7e3b8bc ebp: esp: c022ff0c
ds: 0018 es: 0018 ss: 0018
Process swapper (pid: 0, stackpage=c022f000)
Stack: c6de32c8 c8c92814 c2a08980 0001 c6de32c8 c7e3b8a0 c7e3b8bc
0001 c8c929b5 c7e3b8a0 c2a08988 c4552700 0401
000a c002 c010be71 000a c7e3b8a0 c022ffa8 c0282260
Call Trace: [] [] [] [] []
[] []
[] [] [] [] [] []
[]
Code: 8b 91 a0 00 00 00 8b 43 30 29 42 28 83 7c 24 10 00 74 10 8b
>>EIP; c8c8165d <[usbcore]usb_release_bandwidth+9/60> <=
Trace; c8c92814 <[usb-uhci]process_urb+d4/1ec>
Trace; c8c929b5 <[usb-uhci]uhci_interrupt+89/e0>
Trace; c010be71
Trace; c010c056
Trace; c0108960
Trace; c0108960
Trace; c010a7c0
Trace; c0108960
Trace; c0108960
Trace; c0100018
Trace; c010898d
Trace; c01089f2
Trace; c0105000
Trace; c01001d0
Code; c8c8165d <[usbcore]usb_release_bandwidth+9/60>
<_EIP>:
Code; c8c8165d <[usbcore]usb_release_bandwidth+9/60> <=
0: 8b 91 a0 00 00 00 mov0xa0(%ecx),%edx <=
Code; c8c81663 <[usbcore]usb_release_bandwidth+f/60>
6: 8b 43 30 mov0x30(%ebx),%eax
Code; c8c81666 <[usbcore]usb_release_bandwidth+12/60>
9: 29 42 28 sub%eax,0x28(%edx)
Code; c8c81669 <[usbcore]usb_release_bandwidth+15/60>
c: 83 7c 24 10 00cmpl $0x0,0x10(%esp,1)
Code; c8c8166e <[usbcore]usb_release_bandwidth+1a/60>
11: 74 10 je 23 <_EIP+0x23> c8c81680
<[usbcore]usb_release_bandwidth+2c/60>
Code; c8c81670 <[usbcore]usb_release_bandwidth+1c/60>
13: 8b 00 mov(%eax),%eax
Aiee, killing interrupt handler
Kernel panic: Attempted to kill the idle task!
1 warning issued. Results may not be reliable.
To be noted: my kernel is compiled with "Enforce USB bandwidth allocation",
I 'll without to see if it changes. When the webcam is unplugged everythings
goes right At least for now.
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