diff options
| author |   Eric Dumazet <edumazet@google.com> | 2012-08-22 21:50:59 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2012-08-23 09:24:42 -0700 |
| commit | 748e2d9396a18c3fd3d07d47c1b41320acf1fbf4 (patch) | |
| tree | 49bde8c370615258baada1d43acda2b3fb3625c2 /net/ipv4/devinet.c | |
| parent | packet: Protect packet sk list with mutex (v2) (diff) | |
| download | linux-dev-748e2d9396a18c3fd3d07d47c1b41320acf1fbf4.tar.xz linux-dev-748e2d9396a18c3fd3d07d47c1b41320acf1fbf4.zip | |
net: reinstate rtnl in call_netdevice_notifiers()
Eric Biederman pointed out that not holding RTNL while calling
call_netdevice_notifiers() was racy.
This patch is a direct transcription his feedback
against commit 0115e8e30d6fc (net: remove delay at device dismantle)
Thanks Eric !
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <therbert@google.com>
Cc: Mahesh Bandewar <maheshb@google.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Gao feng <gaofeng@cn.fujitsu.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/devinet.c')
| -rw-r--r-- | net/ipv4/devinet.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 6a5e6e4b142c..adf273f8ad2e 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1147,12 +1147,8 @@ static int inetdev_event(struct notifier_block *this, unsigned long event, void *ptr) { struct net_device *dev = ptr; - struct in_device *in_dev; - - if (event == NETDEV_UNREGISTER_FINAL) - goto out; + struct in_device *in_dev = __in_dev_get_rtnl(dev); - in_dev = __in_dev_get_rtnl(dev); ASSERT_RTNL(); if (!in_dev) { |