From: Li RongQing
Date: Fri, 26 Jan 2018 16:40:41 +0800
> 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 af
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
Cc: Eri
