Ethereal-dev: Re: [Ethereal-dev] ethereal crash when set display filter

Note: This archive is from the project's previous web site, ethereal.com. This list is no longer active.

Date Index Thread Index Other Months All Mailing Lists
Date Prev Date Next Thread Prev Thread Next
From: Ming Zhang <mingz@xxxxxxxxxxx>
Date: Thu, 02 Mar 2006 16:36:54 -0500
On Thu, 2006-03-02 at 21:12 +0000, didier wrote:
> hi
> Ming Zhang wrote:
> > fell curious, how you find out this bug? from gdb back trace, i can not
> > see any place mentioned packet-iscsi.c at all. :P
> more than 20 years of practice in debugging code I don't understand.

admire. yes, this comes from day-by-day experience.

> 
> Seriously?
> It's a null pointer and in the dump
> frame 1: cmp_contains()
> *fv_a->ftype  was  a "FT_PROTOCOL" a bit too much sensible for a smashed 
> memory.
> and
> frame 6: add_packet_to_packet_list()
> fdata->num was for an iSCSI packet. Anyway it's about iSCSI so 
> packet-iscsi.c

with u hint here, i spend quite a while time to understand this. :P
shamed.


> 
> After that it was easy because if I don't know all ethereal fine print I 
> need to improve its filtering speed by a factor 10 and I've got the 
> whole picture rather well.

so this is not a piece of code that u do not understand. ;)

> 
> Didier
>