My IBM dl360 M4 or System x series does not successfully gather a core when a crash is triggered via the Integrated Management Module (IMM) generated Non Maskable Interrupt (NMI)
Issue
My IBM dl360 M4 does not successfully gather a core when a crash is triggered via the Integrated Management Module (IMM) generated Non Maskable Interrupt (NMI). Kdump is configured and tested (via sysrq-c) to verify that it functions, and the appropriate kernel setting is in place to have us crash on an unknown NMI (kenrel.unknown_nmi_panic), but when the NMI is sent, we crash but no vmcore is generated.
Environment
Red Hat Enterprise Linux 5
Red Hat Enterprise Linux 6
IBM Integrated Management Module (IMM)
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