Re: BUG: soft lockup detected on CPU#0! (linux-2.6.14)

[Ingo Molnar]

* Neil Brown <neilb@xxxxxxx> wrote:

> > Nov  4 12:46:44 p133 kernel: BUG: soft lockup detected on CPU#0!
> 
> This seems to suggest that the nfsd thread is always runnable, which 
> implies a read-only load with everything in cache - at least for the 
> 10 seconds leading up to each of these errors.  Is that likely?
> 
> The following patch might fix it.  Please let me know the result.

>  	try_to_freeze();
> +	cond_resched();

and the NFSd thread never considered preemption in any other place? Then 
this should be the right fix - the kernel was running under !PREEMPT.

	Ingo
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