What causes of 'sending NMI to all CPUs'?
Issue
- System is showing lots of
NMI backtrace for cpu Xwith call traces - also
INFO: rcu_sched detected stalls on CPUs/tasks: - Before this, it shows 'sending NMI to all CPUs'
- What's the reason of this NMI messages which is not triggered by hardware
Environment
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 6
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