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-rw-r--r--kernel/nsproxy.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c
index f5b9ee6f6bbb..7b05bce75cde 100644
--- a/kernel/nsproxy.c
+++ b/kernel/nsproxy.c
@@ -117,7 +117,7 @@ int copy_namespaces(int flags, struct task_struct *tsk)
goto out_pid;
out:
- put_nsproxy(old_ns);
+ put_and_finalize_nsproxy(old_ns);
return err;
out_pid:
@@ -135,6 +135,20 @@ out_ns:
goto out;
}
+struct nsproxy *put_nsproxy(struct nsproxy *ns)
+{
+ if (ns) {
+ if (atomic_dec_and_test(&ns->count)) {
+ if (ns->mnt_ns) {
+ put_mnt_ns(ns->mnt_ns);
+ ns->mnt_ns = NULL;
+ }
+ return ns;
+ }
+ }
+ return NULL;
+}
+
void free_nsproxy(struct nsproxy *ns)
{
if (ns->mnt_ns)