| commit | 310928d9633b04866a47f07eb43c498b2d82ebcb | |
| author | Daniel Lezcano <dlezcano@fr.ibm.com> | |
| Tue, 30 Oct 2007 22:38:57 +0000 (30 15:38 -0700) | ||
| committer | David S. Miller <davem@sunset.davemloft.net> | |
| Wed, 31 Oct 2007 04:16:21 +0000 (30 21:16 -0700) | ||
| tree | e07712c96ef555b73d9d93b749056ddd053b86c8 | treesnapshot (tar.gz zip) |
| parent | 93ee31f14f6f7b5b427c2fdc715d5571eb0be9e5 | commitdiff |
[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>
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>
| net/core/net_namespace.c | diffblobblamehistory |