Re: Kernel NFS lockd freezes notebook on shutdown (Linux 2.6.22-rc1 + CFS v12)

[Oleg Nesterov <oleg@tv-sign.ru>]

On 05/20, zilvinas@wilibox.com wrote:
> 
> I've done some more tests and quite frankly I think this is really related 
> to the dreaded ''fglrx.ko'' module. It seems to me that it is much easier 
> to reproduce the problem if that damn module is loaded. It does uses 
> workqueue. Then there is another driver ipw3945 loaded and it is required 
> to run binary only ''ipw3945d'' daemon just to start using wireless driver 
> ...
> 
> In either way both these kernel modules are workqueue users.
> 
> Btw, I had also tested kernel (compiled from the same source) but on 
> different laptop (EVO N800v), single core, Pentium M 2GHz. Kernel is not 
> freezing on shutdown, even loop nfs kernel stop/start - does not cause any 
> kernel panic as on nx9420 (Dual Core) laptop. And that with or without any 
> patch applied from Oleg. :((

Great. Even if not a bugfix, this patch is a reasonable cleanup anyway.

Thank you very much for additional testing and report!

Oleg.