diff options
| author | Daniel Lezcano <dlezcano@fr.ibm.com> | 2007-10-30 15:38:57 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2007-10-30 21:16:21 -0700 |
| commit | 310928d9633b04866a47f07eb43c498b2d82ebcb (patch) | |
| tree | e07712c96ef555b73d9d93b749056ddd053b86c8 /net/core | |
| parent | 93ee31f14f6f7b5b427c2fdc715d5571eb0be9e5 (diff) | |
[NETNS]: fix net released by rcu callback
When a network namespace reference is held by a network subsystem,
and when this reference is decremented in a rcu update callback, we
must ensure that there is no more outstanding rcu update before
trying to free the network namespace.
In the normal case, the rcu_barrier is called when the network namespace
is exiting in the cleanup_net function.
But when a network namespace creation fails, and the subsystems are
undone (like the cleanup), the rcu_barrier is missing.
This patch adds the missing rcu_barrier.
Signed-off-by: Daniel Lezcano <dlezcano@fr.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/net_namespace.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 6f71db8c442..662e6ea1cec 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -112,6 +112,8 @@ out_undo: if (ops->exit) ops->exit(net); } + + rcu_barrier(); goto out; } |