On Mon, 12 Sep 2005 14:04:06 +0800 Liau.Cloud wrote:

> Dear all:
>        I used VWEB vw2010 to encode Video data, and saved data in USB storage 
>  through PCI. When I used NEC HC chip, system will crash at processing the 
> write  function of VWEB
> encode. But it's OK with VIA HC chip. What was the cause of the different?
>  
> NEC chip log:
> 
> # mstest 6 /mnt_usb/usb1/   <----- run storage access test program

Are these test programs available somewhere?  where?


[big snip]


> 
> # ./encoder option_files/enc_mp2ts_ntsc_02m.ini /mnt_usb/usb1/test -i2ctable 
> <--------run VWEB encode program
> +
>  cfifo.Write(p_buf);
> ehci_hcd 00:04.2: fatal error  <--------------------------------crash point
> kernel BUG at hcd/ehci-mem.c:129!

Yes, being in kernel 2.4.18, that probably didn't surprise anyone.

And I seem to have missed your answer to my question about using
something newer than 2.4.18....

It's really difficult to get someone interested in bugs in a
kernel that old.


> Unable to handle kernel NULL pointer dereference at virtual address 00000000
> mm = c0231380 pgd = c0004000
> *pgd = 00000000, *pmd = 00000000
> Internal error: Oops: ffffffff
> CPU: 0
> pc : [<c0027590>]    lr : [<c00306bc>]    Not tainted
> sp : c41c7ec0  ip : c41c7e8c  fp : c41c7ed0
> r10: c41c6374  r9 : c41c7fbc  r8 : c41c6364
> r7 : c41c6000  r6 : 00000000  r5 : c41dbc00  r4 : 00000000
> r3 : 00000000  r2 : 00000001  r1 : 00000001  r0 : 00000001
> Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  Segment kernel
> Control: 39FF  Table: 071D0000  DAC: 0000001D
> Process keventd (pid: 2, stack limit = 0xc41c63a0)
> Stack: (0xc41c7ec0 to 0xc41c8000)
> 7ec0: ca8a0000 c41c7ee8 c41c7ed4 c014527c c002755c c41dbc00 c02798b8 c41c7f00 
> 7ee0: c41c7eec c01452c8 c0145224 c41dbc00 c02798b8 c41c7f70 c41c7f04 c0148b44 
> 7f00: c01452b8 c41c7f10 c0024eac c002cedc c7f08620 00003e84 00000000 caa73274 
> 7f20: ca9a2ed0 ca9985d4 c41c7f3c 000000ff 00000003 60000013 ffffffff 00000000 
> 7f40: c41c7f4c 00000000 ca996bd8 00000000 00000000 20000093 c41c7f84 c41c7f84 
> 7f60: c001b1c8 c41c7f80 c41c7f74 c0143ce4 c0148a78 c41c7fa0 c41c7f84 c0035084 
> 7f80: c0143cd8 c41dbc98 c41dbc98 c0232ac8 00000001 c41c7ff4 c41c7fa4 c003cf84 
> 7fa0: c003501c 00000063 00000001 00000000 00000000 00010000 00000000 00000000 
> 7fc0: c41c6000 00000000 00000000 00000000 c41d8000 c02937fc c026f858 c0231610 
> 7fe0: 690541c1 0001a7a0 00000000 c41c7ff8 c0023cb4 c003ce4c 33333333 33311333 
> Backtrace: 
> Function entered at [<c0027550>] from [<c014527c>]
>  r4 = CA8A0000 
> Function entered at [<c0145218>] from [<c01452c8>]
>  r5 = C02798B8  r4 = C41DBC00 
> Function entered at [<c01452ac>] from [<c0148b44>]
>  r5 = C02798B8  r4 = C41DBC00 
> Function entered at [<c0148a6c>] from [<c0143ce4>]
>  r6 = C001B1C8  r5 = C41C7F84  r4 = C41C7F84 
> Function entered at [<c0143ccc>] from [<c0035084>]
> Function entered at [<c0035010>] from [<c003cf84>]
>  r5 = 00000001  r4 = C0232AC8 
> Function entered at [<c003ce40>] from [<c0023cb4>]
> Code: 1b0023fa e59f0014 eb0023f8 e3a03000 (e5833000) 
> +
>   system: linux 2.4.18
>   processor: IXP425
>   USB extended PCI card NEC chip:D720101GJ
>   USB extended PCI card VIA chip:VT6212L


---
~Randy
You can't do anything without having to do something else first.
-- Belefant's Law


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