Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[firefly-linux-kernel-4.4.55.git] / ipc / shm.c

diff --git a/ipc/shm.c b/ipc/shm.c
index 9fb044f3b345e5e61ea072e255ab3b67b5ce3539..b5bae9d945b62103ad8924ecf17dee8ee18a728c 100644 (file)
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -294,7 +294,7 @@ 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 +304,12 @@ 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);
 }