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| author | WANG Cong <xiyou.wangcong@gmail.com> | 2017-06-24 23:50:30 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-21 08:12:21 +0200 |
| commit | 24b8df0b45849cd270d9f7efd552bb4281016d11 (patch) | |
| tree | b117f8ac2832485d3beac321dfd9321bbb3dd900 /net/core/dev.c | |
| parent | e88fa5f09b1f98c3e907937415d0038ba9af3044 (diff) | |
| download | linux-stable-24b8df0b45849cd270d9f7efd552bb4281016d11.tar.gz | |
tcp: reset sk_rx_dst in tcp_disconnect()
commit d747a7a51b00984127a88113cdbbc26f91e9d815 upstream.
We have to reset the sk->sk_rx_dst when we disconnect a TCP
connection, because otherwise when we re-connect it this
dst reference is simply overridden in tcp_finish_connect().
This fixes a dst leak which leads to a loopback dev refcnt
leak. It is a long-standing bug, Kevin reported a very similar
(if not same) bug before. Thanks to Andrei for providing such
a reliable reproducer which greatly narrows down the problem.
Fixes: 41063e9dd119 ("ipv4: Early TCP socket demux.")
Reported-by: Andrei Vagin <avagin@gmail.com>
Reported-by: Kevin Xu <kaiwen.xu@hulu.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/core/dev.c')
0 files changed, 0 insertions, 0 deletions