RHEL5: Kernel panic with message: "Kernel panic - not syncing: An NMI occurred, please see the Integrated Management Log for details."

Solution Verified - Updated -

Issue

  • Host rebooted itself and dumped vmcore.
  • Kernel panic with following call traces.
PID: 0      TASK: ffffffff80308b60  CPU: 0   COMMAND: "swapper"
 #0 [ffffffff80449d80] crash_kexec at ffffffff800adb59
 #1 [ffffffff80449e40] panic at ffffffff80091b68
 #2 [ffffffff80449f30] hpwdt_pretimeout at ffffffff88e7c4bb [hpwdt]
 #3 [ffffffff80449f40] do_nmi at ffffffff8006588a
 #4 [ffffffff80449f50] nmi at ffffffff80064eef
    [exception RIP: mwait_idle+54]
    RIP: ffffffff80057112  RSP: ffffffff803fbf90  RFLAGS: 00000246
    RAX: 0000000000000000  RBX: ffffffff800570dc  RCX: 0000000000000000
    RDX: 0000000000000000  RSI: 0000000000000001  RDI: ffffffff8030a718
    RBP: 0000000000090000   R8: ffffffff803fa000   R9: 0000000000000017
    R10: ffff810001324710  R11: ffffffff80225a0e  R12: 0000000000000000
    R13: 0000000000000000  R14: 0000000000000000  R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
--- <NMI exception stack> ---
 #5 [ffffffff803fbf90] mwait_idle at ffffffff80057112
 #6 [ffffffff803fbf90] cpu_idle at ffffffff800492c4

Environment

  • Red Hat Enterprise Linux 5
  • kernel-2.6.18-194.32.1.el5
  • HP Machine
  • HP Watchdog Timer Driver ( hpwdt )

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