Messages in this thread | | | Date | Tue, 18 Oct 2011 12:05:27 +0200 | From | Herbert Xu <> | Subject | Re: PROBLEM: System call 'sendmsg' of process ospfd (quagga) causes kernel oops |
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On Tue, Oct 18, 2011 at 12:01:33PM +0200, Eric Dumazet wrote: > > Adding an RCU protected structure to hold hard_header_len / > needed_headroom / needed_tailroom should be possible, but this adds yet > another pointer dereference...
I don't think we need RCU here since the problem is simply that we're using two different values for skb allocations and skb_reserve.
As long as we use one and the same value it should work. The value will rarely be incorrect and when it is, automatic reallocation will occur.
Cheers, -- Email: Herbert Xu <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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