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-rw-r--r--ipc/msg.c1
-rw-r--r--ipc/sem.c1
-rw-r--r--ipc/shm.c1
-rw-r--r--ipc/util.c2
-rw-r--r--ipc/util.h12
5 files changed, 16 insertions, 1 deletions
diff --git a/ipc/msg.c b/ipc/msg.c
index 5b213d952545..600e06f943a6 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -124,6 +124,7 @@ void msg_exit_ns(struct ipc_namespace *ns)
}
mutex_unlock(&msg_ids(ns).mutex);
+ ipc_fini_ids(ns->ids[IPC_MSG_IDS]);
kfree(ns->ids[IPC_MSG_IDS]);
ns->ids[IPC_MSG_IDS] = NULL;
}
diff --git a/ipc/sem.c b/ipc/sem.c
index 0dafcc455f92..21b3289d640c 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -161,6 +161,7 @@ void sem_exit_ns(struct ipc_namespace *ns)
}
mutex_unlock(&sem_ids(ns).mutex);
+ ipc_fini_ids(ns->ids[IPC_SEM_IDS]);
kfree(ns->ids[IPC_SEM_IDS]);
ns->ids[IPC_SEM_IDS] = NULL;
}
diff --git a/ipc/shm.c b/ipc/shm.c
index bfbd317ec11c..d1198dd07a1a 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -116,6 +116,7 @@ void shm_exit_ns(struct ipc_namespace *ns)
}
mutex_unlock(&shm_ids(ns).mutex);
+ ipc_fini_ids(ns->ids[IPC_SHM_IDS]);
kfree(ns->ids[IPC_SHM_IDS]);
ns->ids[IPC_SHM_IDS] = NULL;
}
diff --git a/ipc/util.c b/ipc/util.c
index 42479e4eec59..cd8bb14a431f 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -301,7 +301,7 @@ static int grow_ary(struct ipc_ids* ids, int newsize)
*/
rcu_assign_pointer(ids->entries, new);
- ipc_rcu_putref(old);
+ __ipc_fini_ids(ids, old);
return newsize;
}
diff --git a/ipc/util.h b/ipc/util.h
index c8fd6b9d77b5..e3aa2c5c97dc 100644
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -83,6 +83,18 @@ void* ipc_rcu_alloc(int size);
void ipc_rcu_getref(void *ptr);
void ipc_rcu_putref(void *ptr);
+static inline void __ipc_fini_ids(struct ipc_ids *ids,
+ struct ipc_id_ary *entries)
+{
+ if (entries != &ids->nullentry)
+ ipc_rcu_putref(entries);
+}
+
+static inline void ipc_fini_ids(struct ipc_ids *ids)
+{
+ __ipc_fini_ids(ids, ids->entries);
+}
+
struct kern_ipc_perm* ipc_get(struct ipc_ids* ids, int id);
struct kern_ipc_perm* ipc_lock(struct ipc_ids* ids, int id);
void ipc_lock_by_ptr(struct kern_ipc_perm *ipcp);