netdev - [PATCH net-next] bonding: destroy proc directory only after all bonds are gone

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1405591448-31797-1-git-send-email-vfalico@gmail.com>
Date:	Thu, 17 Jul 2014 12:04:08 +0200
From:	Veaceslav Falico <vfalico@...il.com>
To:	netdev@...r.kernel.org
Cc:	Veaceslav Falico <vfalico@...il.com>,
	Jay Vosburgh <j.vosburgh@...il.com>,
	Andy Gospodarek <andy@...yhouse.net>
Subject: [PATCH net-next] bonding: destroy proc directory only after all bonds are gone

Currently we might arrive to bond_net_exit() with some bonds left (that
were created while the module is unloading). We take care of that by
destroying sysfs (the last possibility to add new bonds) and then
destroying all the remaining bonds.

However, we destroy the /proc/net/bonding directory before destroying those
last bonds, and get a warning that we're trying to destroy a non-empty
proc directory (containing /proc/net/bonding/bondX).

Fix this by moving bond_destroy_proc_dir() after all the bonds are
destroyed, so that we're sure that no bonds exist.

CC: Jay Vosburgh <j.vosburgh@...il.com>
CC: Andy Gospodarek <andy@...yhouse.net>
Signed-off-by: Veaceslav Falico <vfalico@...il.com>
---
 drivers/net/bonding/bond_main.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 1ff676ca..b4cee84 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4450,7 +4450,6 @@ static void __net_exit bond_net_exit(struct net *net)
 	LIST_HEAD(list);
 
 	bond_destroy_sysfs(bn);
-	bond_destroy_proc_dir(bn);
 
 	/* Kill off any bonds created after unregistering bond rtnl ops */
 	rtnl_lock();
@@ -4458,6 +4457,8 @@ static void __net_exit bond_net_exit(struct net *net)
 		unregister_netdevice_queue(bond->dev, &list);
 	unregister_netdevice_many(&list);
 	rtnl_unlock();
+
+	bond_destroy_proc_dir(bn);
 }
 
 static struct pernet_operations bond_net_ops = {
-- 
1.8.4

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html