Re: 2.6.20 BUG: soft lockup detected on CPU#0!

Eric Dumazet
2007-02-08T09:16:28Z

On Thursday 08 February 2007 09:06, Ingo Molnar 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.)

This reminds me the current problem in close_files()
code, where we trigger soft lockup quite regularly.

Is there any chance/interest we can solve the issue Andrew had with this
patch ?

http://lkml.org/lkml/2006/5/2/273

Thank you
Eric