Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=310928d9633b04866a47f07eb43c498b2d82ebcb
Commit: 310928d9633b04866a47f07eb43c498b2d82ebcb
Parent: 93ee31f14f6f7b5b427c2fdc715d5571eb0be9e5
Author: Daniel Lezcano <[EMAIL PROTECTED]>
AuthorDate: Tue Oct 30 15:38:57 2007 -0700
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Tue Oct 30 21:16:21 2007 -0700
[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 <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
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 6f71db8..662e6ea 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;
}
-
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