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Cisco Bug: CSCup56802 - VSM crashes with a kernel BUG message

Last Modified

May 04, 2017

Products (2)

  • Cisco Nexus 1000V Switch for VMware vSphere
  • Cisco Nexus 1000V Switch

Known Affected Releases

4.2(1)SV2(2.2)

Description (partial) 

Symptom:
- Adding a ESXi 5.5 host causes the VSM to crash with the following:

------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:125!
invalid operand: 0000 [#1]
No valid panic notifier. Please add one
wdt_log_count = 0: Exception in kernel mode
wdt_log_non_blocking is not defined

Conditions:
- So far, seen with Nexus 1000v running 4.2(1)SV2(2.2) that's sitting on a Nexus 1010 running 4.2(1)SP1(6.1)
- Problem happens when using elxnet drivers
- Seen with the following combinations:
	- firmware: 4.9.311.20, driver: 10.0.725.2
	- firmware 4.9.416.0, driver 10.0.725.2
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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