From: Jason Wang <jasowang@redhat.com>
Date: Wed, 11 Sep 2013 10:09:48 +0000 (+0800)
Subject: tuntap: correctly handle error in tun_set_iff()
X-Git-Tag: v3.12-rc2~14^2~60
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=662ca437e714caaab855b12415d6ffd815985bc0;p=pandora-kernel.git

tuntap: correctly handle error in tun_set_iff()

Commit c8d68e6be1c3b242f1c598595830890b65cea64a
(tuntap: multiqueue support) only call free_netdev() on error in
tun_set_iff(). This causes several issues:

- memory of tun security were leaked
- use after free since the flow gc timer was not deleted and the tfile
  were not detached

This patch solves the above issues.

Reported-by: Wannes Rombouts <wannes.rombouts@epitech.eu>
Cc: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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