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DateThu, 8 Feb 2007 00:15:40 -0800
FromAndrew Morton <>
SubjectRe: 2.6.20 BUG: soft lockup detected on CPU#0!
On Thu, 8 Feb 2007 09:06:44 +0100 Ingo Molnar <mingo@elte.hu> wrote:

> 
> * Andrew Morton <akpm@linux-foundation.org> wrote:
> 
> > The softlock detector has a long history of false positives and 
> > precious few true positives, in my experience.
> 
> hm, not so the latest & lamest in my experience. The commit that made it 
> quite robust was 6687a97d4041f996f725902d2990e5de6ef5cbe5, as of March 
> 2006, and first showed up in 2.6.17. (OTOH, since the merge of lockdep 
> the main source of soft lockups in the field has been quite severely 
> reduced. Nevertheless it's still good to have it around, occasionally 
> there happen other types of soft lockups too, in open-coded loops, etc.)
> 

So...  what caused Lukasz's lockup?
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