[Bug 612] New: aic7<CENSORED> driver hang

[Martin J. Bligh]

http://bugme.osdl.org/show_bug.cgi?id=612

           Summary: aic7xxx driver hang
    Kernel Version: 2.5.68
            Status: NEW
          Severity: high
             Owner: [e-mail]
         Submitter: [e-mail]

Notes:
  1. Problem seems to be similar to bug #36.

Distribution:
  Red Hat 8.0 with kernel 2.5.68

Hardware Environment:
  HP Vectra XU 2*200MHz Pentium Pro
  scsi0: aic7880: Ultra Single Channel A, SCSI Id=7, 16/253 SCBs
    sda: SEAGATE   Model: ST39140N          Rev: 1498
      sda1: ext3 filesystem /boot       128M
      sda2: ext3 filesystem /           861M
  scsi1: aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
    sdb: SEAGATE   Model: ST318436LW
      sdb1: swap                          1G
      sdb2: ext3 filesystem /usr/local   16G
  ide-bus0: hda: DVD-ROM
  ide-bus1: hdc: CD-RW

Software Environment:
Problem Description:
  System "hangs" with logging of messages:
    "Attempting to queue an ABORT message"
  Only resort is to reset the machine.

Steps to reproduce:
  Problem seems to occur during high load on concurrent disk I/O when
running in
multi-processor mode. The problem does not occur if system is booted with a
single-processor kernel (SMP disabled in kernel build).