[CentOS] swapper: page allocation failure. order:1, mode:0x20

Tim Nelson tnelson at rockbochs.com
Fri Oct 19 10:20:15 EDT 2012


----- Original Message -----
> On Thursday 18 October 2012 21:44:30 Tim Nelson wrote:
> > I see this ocasionally on one of my CentOS 6.3 x64 systems:
> > 
> > Oct 18 03:10:52 backup kernel: swapper: page allocation failure.
> >  order:1, mode:0x20 Oct 18 03:10:52 backup kernel: Pid: 0, comm:
> >  swapper Not tainted 2.6.32-279.9.1.el6.x86_64 #1 Oct 18 03:10:52
> >  backup kernel: Call Trace:
> > Oct 18 03:10:52 backup kernel: <IRQ>  [<ffffffff8112789f>] ?
> >  __alloc_pages_nodemask+0x77f/0x940 Oct 18 03:10:52 backup kernel:
> 
> <snip>
> 
> > 
> > Any thoughts on the cause? The system has 16GB of RAM, and whenever
> >  checked, there is no swap usage. Is this a memory error (bad RAM)?
> > 
> > --Tim
> 
> I have the same problem on a Dell PE R720 with 16GB of RAM doing lots
> of networking. It's a file server. It was discussed on the
> dell-poweredge mailing list last week
> <linux-poweredge at dell.com>
> 
> The conclusion was that it was harmless but for a discussion and
> possible workaround see
> <https://bugzilla.redhat.com/show_bug.cgi?id=770545#c16>
> 
> Hope this helps,
> 

*VERY* helpful, thanks!

--Tim


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