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netns: Add a limit on the number of net namespaces

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Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2016-08-08 14:33:23 -05:00
parent d08311dd6f
commit 703286608a
4 changed files with 24 additions and 1 deletions
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include/net/net_namespace.h
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@ -60,6 +60,7 @@ struct net {
struct list_head exit_list; /* Use only net_mutex */
struct user_namespace *user_ns; /* Owning user namespace */
struct ucounts *ucounts;
spinlock_t nsid_lock;
struct idr netns_ids;