tag dbf854b187a3e38622f32df529eacae8cf94fbac
tagger The Android Open Source Project <initial-contribution@android.com> Tue Mar 15 10:32:38 2016 -0700
object a523310d2adcbce8b52ef54d95515409a9890d8b

Android Wear 6.0.1 Release 0.2

commit a523310d2adcbce8b52ef54d95515409a9890d8b
author Sabrina Dubroca <sd@queasysnail.net> Wed Sep 10 23:23:02 2014 +0200
committer Kevin Ma <kma@google.com> Thu Jan 21 01:53:43 2016 +0000
tree 614c10980ed70433c45c6090bb2fc7e3dfaade88
parent a938169a489c1f490f13d5100cbaaae16f0b853a

ipv6: clean up anycast when an interface is destroyed

If we try to rmmod the driver for an interface while sockets with
setsockopt(JOIN_ANYCAST) are alive, some refcounts aren't cleaned up
and we get stuck on:

  unregister_netdevice: waiting for ens3 to become free. Usage count = 1

If we LEAVE_ANYCAST/close everything before rmmod'ing, there is no
problem.

We need to perform a cleanup similar to the one for multicast in
addrconf_ifdown(how == 1).

BUG: 18902601
Change-Id: I6d51aed5755eb5738fcba91950e7773a1c985d2e
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>