PROBLEM:  (HPAQ5152N)    (Patch ID: OSF375-243)
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This patch fixes a routing corruption that  could been seen as a kernel memory
fault or a corruption within the 128 byte kernel memory bucket.  An example
stack trace is as follows:

  10 panic                src/kernel/bsd/subr_prf.c : 834
  11 afault_trap          src/kernel/arch/alpha/trap.c : 2408
  12 _XentUna             src/kernel/arch/alpha/locore.s : 1767
  13 free_trim            src/kernel/bsd/kern_malloc.c : 1501
  14 free                 src/kernel/bsd/kern_malloc.c : 1554
  15 direct_map_dealloc   src/kernel/arch/alpha/hal/dma_direct_map.c : 587
  16 dma_map_dealloc      src/kernel/io/dec/pci/pcia.c : 4886
  17 dma_map_unload       src/kernel/io/dec/pci/pcia.c : 4839
  18 spo_map_unload_ccb   src/kernel/io/cam/spo/simport_dme.c : 1456
  19 spo_remove_queue_entry  src/kernel/io/cam/spo/simport.c : 2870
  20 spo_process_rsp      src/kernel/io/cam/spo/simport.c : 3707
  21 pzaintr              src/kernel/io/cam/spo/sim_pza.c : 1274
  22 intr_dispatch_post   src/kernel/arch/alpha/hal/shared_intr.c : 247
  23 _XentInt             src/kernel/arch/alpha/locore.s : 1220
  24 vm_page_tester       src/kernel/vm/vm_resident.c : 2011