Messages in this thread | | | Subject | Re: page swap allocation error/failure in 2.6.25 | From | Peter Zijlstra <> | Date | Fri, 25 Jul 2008 09:40:01 +0200 |
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On Fri, 2008-07-25 at 17:20 +1000, Alex Samad wrote: > Hi > > I reported this earlier (http://lkml.org/lkml/2008/7/13/41) which I had > attributed to miss match mtu and route information. > > But I have started to see the errors again. > > > Jul 25 13:07:07 hufpuf kernel: [269282.912693] swapper: page allocation > failure. order:2, mode:0x20 > Jul 25 13:07:07 hufpuf kernel: [269282.912700] Pid: 0, comm: swapper > Tainted: GF 2.6.25-2-amd64 #1 > Jul 25 13:07:07 hufpuf kernel: [269282.912703] > Jul 25 13:07:07 hufpuf kernel: [269282.912703] Call Trace: > Jul 25 13:07:07 hufpuf kernel: [269282.912705] <IRQ> > [<ffffffff8027709a>] __alloc_pages+0x2f8/0x312 > Jul 25 13:07:07 hufpuf kernel: [269282.912750] [<ffffffff80294c63>] > kmem_getpages+0xc5/0x193 > Jul 25 13:07:07 hufpuf kernel: [269282.912757] [<ffffffff8029529d>] > fallback_alloc+0x147/0x1c0 > Jul 25 13:07:07 hufpuf kernel: [269282.912769] [<ffffffff80294ed8>] > kmem_cache_alloc_node+0x105/0x138 > Jul 25 13:07:07 hufpuf kernel: [269282.912777] [<ffffffff803ac4ae>] > __alloc_skb+0x64/0x12d
Its harmless if it happens sporadically.
Atomic order 2 allocations are just bound to go wrong under pressure.
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