pidns: Add a limit on the number of pid namespaces

Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/kernel/ucount.c b/kernel/ucount.c
index 0f9ab3b26185..66eca94e4ada 100644
--- a/kernel/ucount.c
+++ b/kernel/ucount.c
@@ -68,6 +68,7 @@ static int int_max = INT_MAX;
         }
 static struct ctl_table user_table[] = {
         UCOUNT_ENTRY("max_user_namespaces"),
+        UCOUNT_ENTRY("max_pid_namespaces"),
         { }
 };
 #endif /* CONFIG_SYSCTL */