How to avoid the issue of BZ#1110264 that signaling external NMI fails to trigger system panic
Issue
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If NMI watchdog is enabled, signaling external NMI fails to trigger system panic during the system booting even if kernel.unknown_nmi_panic=1.
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For example, if system hangs at boot, we cannot use external NMI to make system panic to get crash dump due to this issue.
Environment
- Red Hat Enterprise Linux 7.0
- kernel-3.10.0-123.el7.x86_64
- Ivy Bridge processors
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