From: Sabrina Dubroca <sd@queasysnail.net>
Date: Tue, 14 Jun 2016 13:25:14 +0000 (+0200)
Subject: macsec: add rcu_barrier() on module exit
X-Git-Tag: v4.1.12-92~24^2~68
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=af0446f54254b1ecab469a73a66d500d81279e06;p=users%2Fjedix%2Flinux-maple.git

macsec: add rcu_barrier() on module exit

Without this, the various uses of call_rcu could cause a kernel panic.

Fixes: c09440f7dcb3 ("macsec: introduce IEEE 802.1AE driver")
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>
(cherry picked from commit b196c22af5c3ff784c472c80f6fb4e5fad67b2ac)

Orabug: 24614549

Signed-off-by: Ethan Zhao <ethan.zhao@oracle.com>
Signed-off-by: Dhaval Giani <dhaval.giani@oracle.com>
---

diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c
index 15c754419ad59..81a681d252dd0 100644
--- a/drivers/net/macsec.c
+++ b/drivers/net/macsec.c
@@ -3305,6 +3305,7 @@ static void __exit macsec_exit(void)
 	genl_unregister_family(&macsec_fam);
 	rtnl_link_unregister(&macsec_link_ops);
 	unregister_netdevice_notifier(&macsec_notifier);
+	rcu_barrier();
 }
 
 module_init(macsec_init);