Re: linux-next: PowerPC boot failures in next-20120521

[Stephen Rothwell]

On Tue, 22 May 2012 13:03:54 +1000 Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx> wrote:
>
> On Mon, 21 May 2012 18:53:37 -0700 (PDT) David Rientjes <rientjes@xxxxxxxxxx> wrote:
> >
> > Yeah, it's sched/numa since that's what introduced numa_init().  It does 
> > for_each_node() for each node and does a kmalloc_node() even though that 
> > node may not be online.  Slub ends up passing this node to the page 
> > allocator through alloc_pages_exact_node().  CONFIG_DEBUG_VM would have 
> > caught this and your config confirms its not enabled.
> > 
> > sched/numa either needs a memory hotplug notifier or it needs to pass 
> > NUMA_NO_NODE for nodes that aren't online.  Until we get the former, the 
> > following should fix it.
> > 
> > 
> > sched, numa: Allocate node_queue on any node for offline nodes
> > 
> > struct node_queue must be allocated with NUMA_NO_NODE for nodes that are 
> > not (yet) online, otherwise the page allocator has a bad zonelist.
> > 
> > Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
> 
> Thanks, that fixes it.
> 
> Tested-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>

And I will put that patch in linux-next until it (or something better)
appears.

-- 
Cheers,
Stephen Rothwell                    sfr@xxxxxxxxxxxxxxxx

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