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Unexpected user initiated "system core" nmi panic on an AFF A250

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hw
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Applies to

  • AFF A250, AFF C250, FAS500f
  • BMC 15.7 or earlier

Issue

  • You see an NMI panic event in the EMS log:

[node-1: send_boot_msg_thread: mgr.stack.string:notice]: Panic string: User initiated "system core" nmi on cpu 8 in SK process wafl_exempt02 on release 9.8P5 (C)
[node-1: send_boot_msg_thread: mgr.stack.at:notice]: Panic occurred at: Fri Aug 27 01:06:53  2021

  • In SP-LATEST-SYSTEM-EVENT-LOG there are no logs around the event time, but the BMC reboots 9 minutes later

271 | 08/26/2021 | 19:39:41 | System Event #0xff | Timestamp Clock Sync | Asserted
272 | 01/01/2000 | 00:00:20 | System Event #0xff | Timestamp Clock Sync | Asserted
273 | 08/26/2021 | 23:15:06 | System Event #0xff | Timestamp Clock Sync | Asserted
274 | 08/26/2021 | 23:15:06 | Power Unit #0x60 | Power off/down | Asserted

 

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