[OpenAFS] series of 1.4.2 fileserver crashes in rxi_FreeDataBufsTSFPQ (rx_packet.c)

[Rainer Toebbicke]

We're having a series of fileserver crashes in rxi_FreeDataBufsTSFPQ, 
about one a day, on a particular server running 1.4.2.

I looked at 6 dumps, the traceback is not always the same, but so far 
the common clue is that call->conn->peer->host points to old afs 3.4 
clients!

Never noticed this on 1.4.1, so a recent change might be responsible. 
There have been a few deltas in rx, one dealing with congestion?!

Obviously I'll dig further into this, but as this is getting really 
ugly now any quick idea is welcome (hence double-post, sorry!). 
Downgrading to 1.4.1 has other ill-effects and is therefore only last 
resort should identifying the volume(s) involved and moving them to an 
old server fail.





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Rainer Toebbicke
European Laboratory for Particle Physics(CERN) - Geneva, Switzerland
Phone: +41 22 767 8985       Fax: +41 22 767 7155