RHEL: System paniced with softirq stuck message
Issue
- we had 16 production serves core dumped last night around the same time.
- The vmcore shows that the softirq was stuck for 67s.
Environment
- Red Hat Enterprise Linux
- kernel 2.6.32-431.20.3.el6
- UDP
- Multicast
- 3rd party Infiniband
- ipoib module
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