commit 9c3804bc9b62d936f1d48b0cc9a0144564ddcbcc
author Eric Dumazet <edumazet@google.com> Fri Sep 08 12:44:47 2017 -0700
committer Chenbo Feng <fengc@google.com> Thu Jan 18 10:58:23 2018 -0800
tree 89abfbd1039f362544e1ce923714ae182ba64906
parent 2c5c4ccd96a7bad68943141b9806d00659c8d2f6

UPSTREAM: tcp: fix a request socket leak

While the cited commit fixed a possible deadlock, it added a leak
of the request socket, since reqsk_put() must be called if the BPF
filter decided the ACK packet must be dropped.

Fixes: d624d276d1dd ("tcp: fix possible deadlock in TCP stack vs BPF filter")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 1f3b359f1004bd34b7b0bad70b93e3c7af92a37b)

Bug: 30950746
Change-Id: I59a1f0c70925ee4bd93ac277d785759958bd2b9e