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SubjectRe: [Fastboot] [PATCH] Kdump(x86): add note type NT_KDUMPINFO to kernel core dumps
Vivek Goyal <vgoyal@in.ibm.com> wrote:
>
> > - Why do you avoid storing the current task on the other cpus?
> >
> > - Can't we derive the current task from the existing register information
> > already captured.
>
> It can be done but as Dave suggested but that requires significant amount
> of job to be done as one has to traverse through the active task stacks and
> look for crash_kexec(). An easier/simpler way is that kernel itself can
> report it. Netdump, diskdump already do it. I think for simplicity, it
> makes sense to export this information from kernel in the form of note.
>
> Only issue I could think of is stack overflow and current might be
> corrupted after panic.
>

Yes, traversing the task_structs in a crashed kernel sounds like a poor
idea.

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