[1887] in linux-scsi channel archive

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Scsi host number roll over, can it kill a machine?

daemon@ATHENA.MIT.EDU (campbell@tirian.che.curtin.edu.au)
Sat May 17 07:07:51 1997

From: campbell@tirian.che.curtin.edu.au
To: linux-scsi@vger.rutgers.edu
Date: 	Sat, 17 May 1997 10:13:36 +0000

I have a report that while stress testing the ppa module using the 
following shell script (or equivalent) can cause a system crash.

#!/bin/sh
while(true)
do
   insmod ppa
   rmmod ppa
done

After killing the klogd I noticed that the scsi host number rolled 
over at 128 (went to -128) and started climbing towards 0. If there 
was a second scsi adapter other than ppa (internal pci card etc) 
would this cause a clash when two hosts shared the same host id?

David Campbell

PS: I'm not a member of this mailing list.

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