diff options
Diffstat (limited to 'ipc')
| -rw-r--r-- | ipc/sem.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index a37aaeb02561..178f303deea5 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -2123,9 +2123,11 @@ void exit_sem(struct task_struct *tsk) ipc_assert_locked_object(&sma->sem_perm); list_del(&un->list_id); - spin_lock(&ulp->lock); + /* we are the last process using this ulp, acquiring ulp->lock + * isn't required. Besides that, we are also protected against + * IPC_RMID as we hold sma->sem_perm lock now + */ list_del_rcu(&un->list_proc); - spin_unlock(&ulp->lock); /* perform adjustments registered in un */ for (i = 0; i < sma->sem_nsems; i++) { |