Re: [Bug #11569] Don't complain about disabled irqs when the system has paniced

Andi Kleen
2008-10-06T05:56:48Z

On Sat, Oct 04, 2008 at 07:32:54PM +0200, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of recent regressions.
>
> The following bug entry is on the current list of known regressions
> from 2.6.26. Please verify if it still should be listed and let me know
> (either way).
>
>
> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=11569
> Subject : Don't complain about disabled irqs when the system has paniced
> Submitter : Andi Kleen <andi@firstfloor.org>
> Date : 2008-09-02 13:49 (33 days old)
> References : http://marc.info/?l=linux-kernel&m=122036356127282&w=4

The problem is actually worse than this description suggests. I updated
the bugzilla entry now.

The new smp_call_function() that is called from panic is quite unsuitable
for this task:
- It allocates memory (not a good idea in panic0
- It complains about interrupt off
- This whole thing breaks at least machine checks

-Andi

--
ak@linux.intel.com