Messages in this thread | | | Subject | Re: kernel 3.2.27 on arm: WARNING: at mm/page_alloc.c:2109 __alloc_pages_nodemask+0x1d4/0x68c() | From | Eric Dumazet <> | Date | Thu, 04 Oct 2012 18:50:06 +0200 |
| |
On Thu, 2012-10-04 at 18:02 +0200, Maxime Bizon wrote: > O > > Since skb_recycle() resets skb->data using (skb->head + NET_SKB_PAD), a > recycled skb going multiple times through a path that needs to expand > skb head will get bigger and bigger each time, and you eventually end up > with an allocation failure. >
Because there is not enough headroom ?
> An idea to fix this would be to pass needed skb size to skb_resize() and > set skb->data to MIN(NET_SKB_PAD, (skb->end - skb->head - skb_size) / 2)
I am trying to decode this but I cant ;)
What is skb_resize() ? and what do you mean setting skb->data to MIN(NET_SKB_PAD, (skb->end - skb->head - skb_size) / 2)
Care to explain again your idea ?
Thanks !
| |