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H A D | skbuff.c | b90ddd56 Wed Dec 20 16:37:50 CST 2017 Willem de Bruijn <willemb@google.com> skbuff: skb_copy_ubufs must release uarg even without user frags
skb_copy_ubufs creates a private copy of frags[] to release its hold on user frags, then calls uarg->callback to notify the owner.
Call uarg->callback even when no frags exist. This edge case can happen when zerocopy_sg_from_iter finds enough room in skb_headlen to copy all the data.
Fixes: 3ece782693c4 ("sock: skb_copy_ubufs support for compound pages") Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> b90ddd56 Wed Dec 20 16:37:50 CST 2017 Willem de Bruijn <willemb@google.com> skbuff: skb_copy_ubufs must release uarg even without user frags skb_copy_ubufs creates a private copy of frags[] to release its hold on user frags, then calls uarg->callback to notify the owner. Call uarg->callback even when no frags exist. This edge case can happen when zerocopy_sg_from_iter finds enough room in skb_headlen to copy all the data. Fixes: 3ece782693c4 ("sock: skb_copy_ubufs support for compound pages") Signed-off-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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