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Some typical issues related to the Networking feature are listed below. Solutions or debugging methods are proposed for these issues.
If your issue is not listed, try also looking in the articles in the [[:Category:Networking] or troubleshooting grids categories.
| Symptom | Resolution |
|---|---|
swapper/0: page allocation failure: order:0, mode:0x480020(GFP_ATOMIC) [...] [<c0232144>] (warn_alloc) from [<c02332f4>] (__alloc_pages_nodemask+0x1018/0x144c) [<c02332f4>] (__alloc_pages_nodemask) from [<c02803e4>] (new_slab+0x4f0/0x5c0) [...] [<c0282e94>] (kmem_cache_alloc) from [<c0844cac>] (__build_skb+0x28/0x98) [<c0844cac>] (__build_skb) from [<c0844e6c>] (__netdev_alloc_skb+0xe8/0x138) [<c0844e6c>] (__netdev_alloc_skb) from [<c06ad700>] (stmmac_rx+0x698/0xb90) |
When DDR is stressed, this issue could occurs if atomic allocation area is in contension. The solution would to increase "vm.min_free_kbytes" but take care of not increasing to much this area to avoid OOM. |