Messages in this thread | | | Subject | Re: [PATCH 3/6] macvtap: zerocopy: validate vector length before pinning user pages | From | Eric Dumazet <> | Date | Tue, 17 Apr 2012 07:33:28 +0200 |
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On Mon, 2012-04-16 at 16:21 +0800, Jason Wang wrote: > Hi: > On 04/16/2012 02:53 PM, Eric Dumazet wrote: > if ((num_pages != size) || > >> (num_pages> MAX_SKB_FRAGS - skb_shinfo(skb)->nr_frags)) > >> > > Hi Jason > > > > Why is -EFAULT the right error code ? > > E2BIG or is there any error code you prefer?
Might be good yes.
However it sounds strange user cant write any size he wants (and kernel needs to build several skbs to fulfill user request)
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