kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

bonding: remove sysfs before removing devices

Browse source 
We have a race condition if we try to rmmod bonding and simultaneously add
a bond master through sysfs. In bonding_exit() we first remove the devices
(through rtnl_link_unregister() ) and only after that we remove the sysfs.
If we manage to add a device through sysfs after that the devices were
removed - we'll end up with that device/sysfs structure and with the module
unloaded.

Fix this by first removing the sysfs and only after that calling
rtnl_link_unregister().

Signed-off-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Veaceslav Falico 2013-04-03 05:46:33 +00:00 committed by David S. Miller
parent 31d1670e73
commit 4de79c737b
1 changed files with 1 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/net/bonding/bond_main.c
View file

@ -4902,8 +4902,8 @@ static void __exit bonding_exit(void)
bond_destroy_debugfs();
rtnl_link_unregister(&bond_link_ops);
unregister_pernet_subsys(&bond_net_ops);
rtnl_link_unregister(&bond_link_ops);
#ifdef CONFIG_NET_POLL_CONTROLLER
/*