1 files changed, 13 insertions, 3 deletions

diff --git a/ipc/shm.c b/ipc/shm.c
index 9fb044f3b34..02ecf2c078f 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -105,9 +105,16 @@ void shm_exit_ns(struct ipc_namespace *ns)
 }
 #endif
 
-void __init shm_init (void)
+static int __init ipc_ns_init(void)
 {
         shm_init_ns(&init_ipc_ns);
+        return 0;
+}
+
+pure_initcall(ipc_ns_init);
+
+void __init shm_init (void)
+{
         ipc_init_proc_interface("sysvipc/shm",
 #if BITS_PER_LONG <= 32
                                 "       key      shmid perms       size  cpid  lpid nattch   uid   gid  cuid  cgid      atime      dtime      ctime        rss       swap\n",
@@ -294,7 +301,7 @@ static int shm_try_destroy_orphaned(int id, void *p, void *data)
 void shm_destroy_orphaned(struct ipc_namespace *ns)
 {
         down_write(&shm_ids(ns).rw_mutex);
-        if (&shm_ids(ns).in_use)
+        if (shm_ids(ns).in_use)
                 idr_for_each(&shm_ids(ns).ipcs_idr, &shm_try_destroy_orphaned, ns);
         up_write(&shm_ids(ns).rw_mutex);
 }
@@ -304,9 +311,12 @@ void exit_shm(struct task_struct *task)
 {
         struct ipc_namespace *ns = task->nsproxy->ipc_ns;
 
+        if (shm_ids(ns).in_use == 0)
+                return;
+
         /* Destroy all already created segments, but not mapped yet */
         down_write(&shm_ids(ns).rw_mutex);
-        if (&shm_ids(ns).in_use)
+        if (shm_ids(ns).in_use)
                 idr_for_each(&shm_ids(ns).ipcs_idr, &shm_try_destroy_current, ns);
         up_write(&shm_ids(ns).rw_mutex);
 }