Colin Yi wrote: > > Oliver Yang Wrote: >> Colin Yi wrote: >>> >>> Hi, >>> We found a hard hang on a HP x86 system installed snv_130. firstly I >>> add "set snooping=1" to /etc/system >>> to try to get a core dump file. but it doesn't work, the system hang >>> more than one hour and can't enter >>> kmdb mode (the deadman timer is the default value). secondly I >>> add?set pcpslump:apic_panic_on_nmi=1? to >>> /etc/system, and send an NMI to OS from HP utility, The system >>> enters the kmdb mode this time, But the keyboard >>> freeze and I am not able to perform any operations in kmdb. >>> >>> Does anyone know any other way to debug this hard hang? >>> >> >> Have you tied using kmdb via the tip line? Sometimes using tip line >> is helpful. > > Doesn't work. I'm little bit confused.
The apic_panic_on_nmi should cause a system panic, have you seen "NMI received" panic message on the console?
