Re: Segmentation Fault and capturing on promiscuous interface in tethereal

On Jun 19, 2006, at 5:18 PM, neelay Thaker wrote:

> I compiled and built ethereal. When I execute tethereal, I get the  
> error- "Segmentation fault". What's the cause of this error?

Either a dereference of pointer that doesn't point to a valid  
address, or possibly an attempt to store through a pointer that  
points to a valid address in a read-only region of the address space.

There does not exist a higher-level description of the cause of a  
"segmentation fault".  A lot of different problems, which have only  
the item in the previous paragraph in common, can cause a  
segmentation fault.  I suggest you try to use a debugger to determine  
what code is getting the segmentation fault.

> Also, I have another version of tethereal that doesn't give a  
> Segmentation fault, but the problem is that it doesn't capture on  
> an interface that's already in promiscuous mode.

What happens when you try to capture on an interface that's already  
in promiscuous mode?

Are you doing this on HP-UX?