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[ts-7000] spca5xx webcam driver and the Kernel panic

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Subject: [ts-7000] spca5xx webcam driver and the Kernel panic
From: "Robert" <>
Date: Thu, 05 Oct 2006 19:19:20 -0000
I have gotten a bit further along with using the spca5xx drivers, but
I am once again stuck on trying to figure out how to deal with a
kernel panic.  In particular, how do I find out where the NULL pointer
is being dereferenced?

The following is an example of a panic while running spcacat:

$ ./spcacat -N 1
 Spcaview version: 1.1.5 date: 12:12:2005 (C) 
video /dev/video0
Camera found: Labtec Webcam Pro
VIDIOCGPICT brightnes=32768 hue=0 color=0 contrast=32768
whiteness=0depth=24 palette=4
Bridge found: ZC301-2
is_spca SPCA505
is_spca SPCA506
is_spca SPCA501
is_spca SPCA508
is_spca SPCA504
is_spca SPCA500
is_spca SPCA504B
is_spca SPCA533
is_spca SPCA504C
is_spca SPCA561
is_spca SPCA536
is_spca SN9C102
is_spca ZR364XX
is_spca ZC301-2
quality 1 autoexpo 1 Timeframe 0
StreamId: 0  Camera
try palette 21 depth 8
Available  palette 21
try palette 15 depth 12
Available  palette 15
try palette 4 depth 24
Available  palette 4
try palette 3 depth 16
Available  palette 3
try palette 5 depth 32
Available  palette 5
probe size in
Available Resolutions width 640  heigth 480
Available Resolutions width 384  heigth 288
Available Resolutions width 352  heigth 288
Available Resolutions width 320  heigth 240
Available Resolutions width 192  heigth 144
Available Resolutions width 176  heigth 144
 Format asked 15 check 4
VIDIOCSPICT brightnes=32768 hue=0 color=0 contrast=32768
whiteness=0depth=12 palette=15
VIDIOCGPICT brightnes=32768 hue=0 color=0 contrast=32768
whiteness=0depth=12 palette=15
 grabbing method default MMAP asked
VIDIOCGMBUF size 2457616  frames 2  offets[0]=0 offsets[1]=1228808
Waiting .... for Incoming Events. CTrl_c to stop !!!!
Unable to handle kernel NULL pointer dereference at virtual address
00000000
pgd = c0214000
[00000000] *pgd=00000000, *pmd = 00000000
Internal error: Oops: 807
CPU: 0
pc : [<c023c554>]    lr : [<c023c550>]    Not tainted
sp : c5019fbc  ip : 60000013  fp : 00000000
r10: 00225108  r9 : 41129200  r8 : 60000013
r7 : 00000000  r6 : c035e020  r5 : c0708008  r4 : c0708008
r3 : 00000000  r2 : 00000000  r1 : c070800c  r0 : 00000000
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  Segment kernel
Control: C000317F  Table: E4060000  DAC: 0000001D
Process ksoftirqd_CPU0 (pid: 3, stack limit = 0xc5018368)
Stack: (0xc5019fbc to 0xc501a000)
9fa0:                                                               
00000001
9fc0: c035e078 fffffff6 c037a6c0 c023c344 c5018000 c037a6c0 00000000
c0372a78
9fe0: c035ed10 c023c8a0 00000000 c403e000 c039c508 c022dc54 ffffffff
ffffffff
Backtrace: no frame pointer
Code: e5955000 1a000006 eb03f4f0 e3500000 (05800000)
Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing










 
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