Re: kernel 3.2.27 on arm: WARNING: at mm/page_alloc.c:2109 __alloc_pages_nodemask+0x1d4/0x68c()
From: Eric Dumazet <hidden>
Date: 2012-10-04 17:17:36
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On Thu, 2012-10-04 at 19:09 +0200, Maxime Bizon wrote:
yes, on ipv6 forward path the default NET_SKB_PAD is too small, so each packet forwarded has its headroom expanded, it is then recycled and gets its original default headroom back, then it gets forwarded, expanded, ...
Hmm, this sounds bad (especially without recycle) Might I assume NET_SKB_PAD is 32 on this arch ? We might adjust NET_SKB_PAD to avoid all these memory copies...