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[LDM #UST-447927]: LDM - LDM 6.4.5 SIGSEGV



Christian,

> Institution: Universite du Quebec a Montreal
> Package Version: 6.4.5
> Operating System: Linux 2.6.15-1.1833_FC4smp x86_64 GNU/Linux
> Hardware Information: ?
> Inquiry: I have SIGSEV errors in the latest LDM compiled from source.
> 
> I don't know why... I had no problem using 6.4.2.

There is a bug in all versions of the LDM that can cause a SIGSEGV in a 
downstream LDM if the RPC layer spontaneously decides to close the connection.
This bug if fixed in the latest "beta" version (6.4.6.4), which is available
at

    ftp://ftp.unidata.ucar.edu/pub/ldm/beta/ldm-6.4.6.4.tar.Z

The few sites that are running this beta version have not reported any
SIGSEGV problems (which at least one of them was encountering).

I recommend installing the beta version.  I'm going to release it soon.

> 
> Here are the relevant logs:
> 
> May 30 08:29:31 kepler idd.cise-nsf.gov[32554] NOTE: Upstream LDM-6 on 
> idd.cise-nsf.gov is willing to be a primary feeder
> May 30 08:29:32 kepler flood.atmos.uiuc.edu[32553] NOTE: Switching 
> data-product transfer-mode to primary
> May 30 08:29:32 kepler flood.atmos.uiuc.edu[32553] NOTE: LDM-6 desired 
> product-class: 20060530082752.876 TS_ENDT {{CONDUIT,  
> "(status)|(ST.opnl/MT.(avn|gfs|e
> ta|nam|bmoav|cy23r))"},{NONE,  "SIG=275cb421c83569f8af64027e0299d565"}}
> May 30 08:29:32 kepler flood.atmos.uiuc.edu[32553] NOTE: Upstream LDM-6 on 
> flood.atmos.uiuc.edu is willing to be a primary feeder
> May 30 08:31:34 kepler rpc.ldmd[32538] NOTE: child 32554 terminated by signal 
> 11
> May 30 08:31:34 kepler rpc.ldmd[32538] NOTE: Killing (SIGINT) process group
> May 30 08:31:34 kepler pqact[32540] NOTE: Interrupt
> May 30 08:31:34 kepler rpc.ldmd[32538] NOTE: SIGINT
> May 30 08:31:34 kepler pqact[32540] NOTE: Exiting
> May 30 08:31:34 kepler rtstats[32541] NOTE: Interrupt
> May 30 08:31:34 kepler rtstats[32541] NOTE: Exiting
> May 30 08:31:34 kepler flood.atmos.uiuc.edu[32543] NOTE: SIGINT
> May 30 08:31:34 kepler idd.cise-nsf.gov[32548] NOTE: SIGINT
> May 30 08:31:34 kepler idd.cise-nsf.gov[32551] NOTE: SIGINT
> May 30 08:31:34 kepler idd.cise-nsf.gov[32544] NOTE: SIGINT
> May 30 08:31:34 kepler unidata2.ssec.wisc.edu[32552] NOTE: SIGINT
> May 30 08:31:34 kepler idd.unidata.ucar.edu[32550] NOTE: SIGINT
> May 30 08:31:34 kepler flood.atmos.uiuc.edu[32553] NOTE: SIGINT
> May 30 08:31:34 kepler ldm.meteo.ec.gc.ca[32545] NOTE: SIGINT
> May 30 08:31:34 kepler striker2.atmos.albany.edu[32546] NOTE: SIGINT
> May 30 08:31:34 kepler rpc.ldmd[32538] NOTE: Terminating process group
> May 30 08:31:34 kepler rpc.ldmd[32538] NOTE: child 32542 terminated by signal 
> 6
> May 30 08:31:34 kepler rpc.ldmd[32538] NOTE: Killing (SIGINT) process group

Regards,
Steve Emmerson

Ticket Details
===================
Ticket ID: UST-447927
Department: Support LDM
Priority: Normal
Status: Closed


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