tree 685bd712d0a69e853828cb0c0331577c3c7e5df0
parent 30e948a37839c633d18f6c4cf8a212912ba9449c
author Li RongQing <lirongqing@baidu.com> 1516956041 +0800
committer David S. Miller <davem@davemloft.net> 1517266583 -0500

tcp: release sk_frag.page in tcp_disconnect

socket can be disconnected and gets transformed back to a listening
socket, if sk_frag.page is not released, which will be cloned into
a new socket by sk_clone_lock, but the reference count of this page
is increased, lead to a use after free or double free issue

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>