Re: PROBLEM: System call 'sendmsg' of process ospfd (quagga) causes kernel oops

Le mercredi 19 octobre 2011 à 03:30 -0400, David Miller a écrit :

From: Eric Dumazet <redacted>
Date: Wed, 19 Oct 2011 09:18:33 +0200

quoted

Seems fine (Maybe do the +15 in caller site ?), but we also have other
problematic cases, using alloc_skb() only...

Ok, which ones operate over these problematic GRE tunnels?

I was more thinking of general idea to allow any device to change its
needed headroom.

For GRE tunnels, I dont think IPv6 fragmentation could be relevant,
but maybe IGMP could trigger a problem ?