Wireshark-dev: Re: [Wireshark-dev] Unhandled exception

From: Anders Broman <anders.broman@xxxxxxxxxxxx>
Date: Tue, 18 Sep 2018 08:18:40 +0000
Hi,
I think that the problem is that one of these fields has changed name, but debugging the registration phase is hard on Windows as the console is not open...GRR
* The following are the field ids for the protocol values used by TRANSUM.
    Make sure they line up with ehf_of_interest order */
HF_OF_INTEREST_INFO hf_of_interest[HF_INTEREST_END_OF_LIST] = {
    { -1, "ip.proto" },
    { -1, "ipv6.nxt" },

    { -1, "tcp.analysis.retransmission" },
    { -1, "tcp.analysis.keep_alive" },
    { -1, "tcp.flags.syn" },
    { -1, "tcp.flags.ack" },
    { -1, "tcp.flags.reset" },
    { -1, "tcp.flags.urg" },
    { -1, "tcp.seq" },
    { -1, "tcp.srcport" },
    { -1, "tcp.dstport" },
    { -1, "tcp.stream" },
    { -1, "tcp.len" },

    { -1, "udp.srcport" },
    { -1, "udp.dstport" },
    { -1, "udp.stream" },
    { -1, "udp.length" },

    { -1, "ssl.record.content_type" },

    { -1, "tds.type" },
    { -1, "tds.length" },

    { -1, "smb.mid" },

    { -1, "smb2.sesid" },
    { -1, "smb2.msg_id" },
    { -1, "smb2.cmd" },

    { -1, "dcerpc.ver" },
    { -1, "dcerpc.pkt_type" },
    { -1, "dcerpc.cn_call_id" },
    { -1, "dcerpc.cn_ctx_id" },

    { -1, "dns.id"},
};
Regards
Anders

-----Original Message-----
From: Wireshark-dev <wireshark-dev-bounces@xxxxxxxxxxxxx> On Behalf Of João Valverde
Sent: den 18 september 2018 10:10
To: wireshark-dev@xxxxxxxxxxxxx
Subject: Re: [Wireshark-dev] Unhandled exception



On 18/09/18 01:07, Maynard, Chris wrote:
> Thanks for the tips Richard, but after some additional testing and some head-scratching, I discovered the source of the problem was something in my profile, because if I switched to a pristine profile, then master ran fine.  Through divide-and-conquer/trial-and-error, I discovered that it was due to enabling the transum dissector, although I can't figure out why enabling the transum dissector causes this, and then only for master.  Enabling it for 2.6.2 seems fine.
> 
> Maybe someone could just confirm if they also experience this exception if they enable the transum dissector?  If confirmed, I will file a bug report.

Confirmed on the latest master. Enabling transum crashes wireshark.

> The exception, for reference:
> 
> Unhandled exception ("proto.c:6497: failed assertion "(guint)hfid < gpa_hfinfo.len" (Unregistered hf!)", group=1, code=6)
> 
> Thanks.
> - Chris
> 
> -----Original Message-----
> From: Wireshark-dev [mailto:wireshark-dev-bounces@xxxxxxxxxxxxx] On Behalf Of Richard Sharpe
> Sent: Monday, September 17, 2018 4:22 PM
> To: Developer support list for Wireshark <wireshark-dev@xxxxxxxxxxxxx>
> Subject: Re: [Wireshark-dev] Unhandled exception
> 
> <snip>
> 
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