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-rw-r--r--net/core/net_namespace.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 4026a4cf..bd8c471 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -413,8 +413,11 @@ again:
}
}
error = __register_pernet_operations(list, ops);
- if (error && ops->id)
- ida_remove(&net_generic_ids, *ops->id);
+ if (error) {
+ rcu_barrier();
+ if (ops->id)
+ ida_remove(&net_generic_ids, *ops->id);
+ }
return error;
}
@@ -423,6 +426,7 @@ static void unregister_pernet_operations(struct pernet_operations *ops)
{
__unregister_pernet_operations(ops);
+ rcu_barrier();
if (ops->id)
ida_remove(&net_generic_ids, *ops->id);
}
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