Re: Segmentation fault

This is the initial GET that crashes. In fact, I noticed that before, but I
used snmpwalk instead with the following line :

print("Type = %s") %(result, )

and it printed :

rbQoSProfileType 25 = None ( None )

I am wondering why a GET crashes while a WALK doesn't (but doesn't give the
correct answer) ?

Thank you

2009/7/8 Dave Shield <[email protected]>

> 2009/7/8 François Dumont <[email protected]>:
> > I reduced the python script to this :
> >
> >> qosType = raw_input("Enter the new type (0 = rbCG, 1 = rbRT, 2 = rbNRT,
> 3
> >> = rbBE) :\n")
> >> value = "rbQoSProfileType"
> >> oid = netsnmp.Varbind(value, profileNb, qosType)
> >> resultSet = netsnmp.snmpset(oid, DestHost = "10.0.0.1", Community =
> >> "private", Version = 2)
> >> #resultGet = netsnmp.snmpget(oid, DestHost = "10.0.0.1", Community =
> >> "private", Version = 2)
> >> print("get result : %s") %(resultSet)
> >> #print("%s = %s") %(value,resultGet)
> >
> > If I run this python script, it returns (resultSet) 0, so the set didn't
> > succeed. If I uncomment the two commented lines, it returns a
> segmentation
> > fault. I followed step by step what does the script with the pdb
> debogger,
> > and I found that this is when it enters the get function that it fails
> (and
> > gives the segmentation fault).
>
> OK - that's progress.
>
> How about reducing it further.   Something like:
>
>     qosType = "0"
>     profileNb = "1      ;     # or whatever index you are using
>      value = "rbQoSProfileType"
>
>     oid = netsnmp.Varbind(value, profileNb, qosType)
>      r = netsnmp.snmpget(oid, DestHost = "10.0.0.1", Community
> ="private", Version = 2)
>      print ("Get1: %s")  %(r)
>
>     oid = netsnmp.Varbind(value, profileNb, qosType)
>      r = netsnmp.snmpset(oid, DestHost = "10.0.0.1", Community
> ="private", Version = 2)
>      print ("Set: %s")  %(r)
>
>     #oid = netsnmp.Varbind(value, profileNb, qosType)
>      r = netsnmp.snmpget(oid, DestHost = "10.0.0.1", Community
> ="private", Version = 2)
>      print ("Get2: %s")  %(r)
>
>
> Does the initial GET crash?  Or is it just the GET *following* the SET
> request?
> Does it make a difference if you uncomment the line that re-sets the
> oid variable
> befor the second GET?
>
>
>
> Dave
>

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