[Spread-users] spread abort after Deliver_packet: sequence error

Jonathan Stanton jonathan at cnds.jhu.edu
Tue Nov 14 04:31:50 EST 2006

This error is a "must not occur" situation, which is why Spread kills itself with a 
fatal error message. So at some level it is definitely a Spread bug. 

There are two main sources for this type of error:

1) a memory corruption problem, so the value stored in the field is corrupt.
2) a protocol bug where the spread code has a logic error.

Besides having high amounts of UDP traffic (I assume the extra traffic is not 
going to the Spread port numbers) is there anything else interesting about your 

Did you notice any other messages in teh Spread log that appeared unusual or 
occured in the last few seconds before the crash?

Does the crash occur often? If so how often?



On Tue, Nov 07, 2006 at 11:51:41AM +0100, martin345 at arcor.de wrote:
> spread-Version: 3.17.03
> Platform: Solaris 2.9 with current patch cluster and 113459-04 SunOS 5.9: udp patch
> A "Deliver_packet: sequence error" occured in spread.log (see below). Afterwards all spread daemons terminated itself.
> Hint: We have heavy udp traffic on some hosts using spread because of SNMP polling, which is udp based like spread.
> Can you give me any comments about that problem? Do you think there might be a problem inside spread?
> Kind regards,
> Martin
> 2006-11-03 18:52:13 GMT Memb_handle_message: handling join message from -1726890574, State is 4
> 2006-11-03 18:52:14 GMT Memb_handle_token: handling form2 token
> 2006-11-03 18:52:14 GMT Handle_form2 in FORM
> 2006-11-03 18:52:14 GMT Deliver_packet: sequence error: sec is -6, should be 2
> Exit caused by Alarm(EXIT)
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Jonathan R. Stanton         jonathan at cs.jhu.edu
Dept. of Computer Science   
Johns Hopkins University    

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