tree 22a304daa8d4cb74a609587a841e3f85a7b57348
parent 1eed677933b816978abc4e3e18ecae5f254cb9be
author Xin Long <lucien.xin@gmail.com> 1453398548 +0800
committer David S. Miller <davem@davemloft.net> 1454025572 -0800

sctp: hold transport before we access t->asoc in sctp proc

Previously, before rhashtable, /proc assoc listing was done by
read-locking the entire hash entry and dumping all assocs at once, so we
were sure that the assoc wasn't freed because it wouldn't be possible to
remove it from the hash meanwhile.

Now we use rhashtable to list transports, and dump entries one by one.
That is, now we have to check if the assoc is still a good one, as the
transport we got may be being freed.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>