aic7xxx problems in 2.2.0

[Doug Ledford]

Martin Maciaszek wrote:
> 
> Ever since 2.1.131 I got oopses when running some scsi-intensive operations. I can reproduce this oops with deadly accuracy. A simple "dd if=/dev/scd2 of=/dev/null bs=2048" is enough to reproduce this oops. I even updated the BIOS of my AHA-2940UW from 1.21 to 1.34.3 without any succes. Attached you will find the output of ksymoops, and the contents of /proc/scsi/scsi and /proc/scsi/aic7xxx/0. If you need any further information just tell me.

This ksymoops output indicates the problem is that there is a bogus
page_hash_table entry resulting in an attempt to read a pointer that's
invalid.  This most likely isn't an aic7xxx issue and is most likely
hardware related (aka, 2.1.131 and later sped up some part of the kernel
just enough to break your RAM or something like that).  Try fiddling
with RAM timings or turning off cache and see if that helps.

-- 
  Doug Ledford   <dledford at redhat.com>
   Opinions expressed are my own, but
      they should be everybody's.

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