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

[didier <dgautheron@xxxxxxxx>]

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.

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

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.

Didier