RHEL5: NMI watchdog panicked the system due a BKL spinlock issue in NFS

Solution Unverified - Updated -

Issue

  • NMI watchdog panicked the system due a spinlock issue in NFS.
  • NISP_PERF3_NISP went D state.
  • Several nfs: server xxxx not responding, still trying messages are seen.

Environment

  • Red Hat Enterprise Linux 5.6
    • see on kernel 2.6.18-238.19.1.el5
  • Proprietary modules loaded (EMC Powerpath)
    • EMC powermt for PowerPath (c) Version 5.3 (build 185)
emcpdm(PU) emcpgpx(PU) emcpmpx(PU) emcp(PU)

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