skput - kernel panic

[powell molleti]

Hi,

  Seems like my element is send a bad packet to
  ToDevice and which is calling skb_put which calls
  the inlined skb_over_panic.
 
  I have cleaned up the stuff. But i m facing
  a diff problem now.

  I m maintaining a buffer that buffer packets for
  a brief time to make some decision. I m storing
  the packet to the buffer as follows.

  buff -> packet = (Packet *) p -> uniqueify().

  When the decision is made i have to send the packet
  and free the buff link that is having the packet.
 
  So i have done the following to send:

  Packet *p = (Packet *)Packet::make(p_tmp -> 
                                   steal_skb());

   output(0).push(p);
  
  When i do this seems like output(0).push(p) is
  working but when i tried to free the buff , click
  is crashing.

  The ksymoops output is :

  Code;  c812cefb <[click].text.end+8924/9ca9>
   d:   68 f4 0c 16 c8            push   $0xc8160cf4
Code;  c812cf00 <[click].text.end+8929/9ca9>
  12:   e8 3b 00 00 00            call   52
<_EIP+0x52> c812cf40 <[click].text.end+8969/9ca9>


  So i tried another make method as follows.

  
  Packet *p = (Packet *) Packet::make(hroom, data,
len,
                                      troom);  

  When i do this output(0).push(p) is not executing
  and click is crashing with a oops report that i
  not able to figure out.
  
  I m pasting a few lines from the ksymoops report:

Code;  c80ec2d8
<[click]unparse_type__Q28IPFilter9Primitiveii+378/8b4>
   b:   0f b7 01                  movzwl (%ecx),%eax
Code;  c80ec2db
<[click]unparse_type__Q28IPFilter9Primitiveii+37b/8b4>
   e:   66 89 43 08               mov    %ax,0x8(%ebx)
Code;  c80ec2df
<[click]unparse_type__Q28IPFilter9Primitiveii+37f/8b4>
  12:   0f b7 00                  movzwl (%eax),%eax
  
I have looked into arpquerier source and it seems
fine. 

It will be great if anyone can throw some light on
this, a pointer to a source or some extra doc will
also do.

I m just not able to deocde the ksymoops messages.


Thanks
cya
powell  
 
--- powell molleti <powelllinux at yahoo.com> wrote:
> Hi,
> 
>  On using the click for a while i m getting
>  
>  kernel panic : skput:over : c80b6a85 : 1580
> put:1514
> \
>                                       dev:eth0
>  
>  It is written in ChangeLog that this bug was
>  fixed on 2nd Dec 2001. I m using the cvs version of
> 
>  7th Jan 2002.
> 
>  Is this because of the problem in my element that 
>  i m running. I using only the Packet class for
>  all packet management.
> 
>  Thank in advance.
>  cya
>  Powell
> 
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