RHEL5: IBM pSseries server with Broadcom NIC crashes after "iommu_alloc failed" messages in log

Solution Unverified - Updated -

Issue

An IBM POWER based machine crashes or hangs shortly after displaying one or more messages in the log similar to:

iommu_alloc failed, tbl c000000001ab8280 vaddr c00000005e660000 npages 1
iommu_alloc failed, tbl c000000001ab8280 vaddr c000000084170000 npages 4

Environment

  • Red Hat Enterprise Linux 5.8
  • IBM POWER hardware
  • Broadcom "Tigon 3" network interface

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