On Tue, 24 Nov 2020 22:51:24 +0100 Paolo Abeni wrote:
> We can enter the main mptcp_recvmsg() loop even when
> no subflows are connected. As note by Eric, that would
> result in a divide by zero oops on ack generation.
>
> Address the issue by checking the subflow status before
> sending the ack.
>
> Additionally protect mptcp_recvmsg() against invocation
> with weird socket states.
>
> v1 -> v2:
> - removed unneeded inline keyword - Jakub
>
> Reported-and-suggested-by: Eric Dumazet <eric.duma...@gmail.com>
> Fixes: ea4ca586b16f ("mptcp: refine MPTCP-level ack scheduling")
> Signed-off-by: Paolo Abeni <pab...@redhat.com>
Applied, thanks!
