Reading ehca performance counters from sysfs can cause kernel panic on RHEL6 beta

Solution Verified - Updated -


  • reading '/sys/devices/ibmebus/23000200.lhca/infiniband/ehca0/ports/1/counters/*' can cause a null pointer dereference leading to a kernel panic


  • Red Hat Enterprise Linux 6 beta (RHEL 6 beta)
  • IBM Power Systems
  • IBM InfiniBand Adapter

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