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SubjectRe: [patch] thread-aware coredumps, 2.5.43-C3
Date
On Thursday 17 October 2002 07:12 pm, Andi Kleen wrote:
> I want the x86 CPU error code, which often has interesting clues on the
> problem. trapno would be useful too. I suspect other CPUs have similar
> extended state for exceptions.
>
> I usually hack my kernel to printk() it, but having it in the coredump
> would be more general and you can look at it later.
>
> Eventually (in a future kernel) I would love to have the exception
> handler save the last branch debugging registers of the CPU and the let the
> core dumper put that into the dump too. Then you could easily
> figure out what the program did shortly before the crash.
>
> -Andi

Having the last branch before a crash would be cool. Its easy to add note
sections to core files. If it turns out to be useful I'm sure the GDB folks
would support it.

--mgross
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