Cisco Bug: CSCum43007 - Cold boot during ISSU or ISSD on MDS 9148 chassis

Last Modified

Feb 14, 2018

Products (1)

Cisco MDS 9000 Series Multilayer Switches

Known Affected Releases

5.2(8b) 6.2(5)S58

Description (partial)

Symptom:
An MDS 9148 switch may experience a cold boot during ISSU/ISSD. This is due to a kernel panic in the 'issu_helper' process:

  show system exception-info
  ...
  1386222127:47334587 process issu_helper (2662), jiffies 0xffff9bed
  Other Info: Kernel Panic: Exception in kernel mode.  Error 0 trap 0 signal 5

Conditions:
This is a rare issue. It can only occur during an ISSU/ISSD and only on the MDS 9148 platform.

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