diff --git a/fs/aio.c b/fs/aio.c index 2a9dfa58ec3a..5934ea84b499 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -335,6 +335,9 @@ static int aio_ring_mremap(struct vm_area_struct *vma) spin_lock(&mm->ioctx_lock); rcu_read_lock(); table = rcu_dereference(mm->ioctx_table); + if (!table) + goto out_unlock; + for (i = 0; i < table->nr; i++) { struct kioctx *ctx; @@ -348,6 +351,7 @@ static int aio_ring_mremap(struct vm_area_struct *vma) } } +out_unlock: rcu_read_unlock(); spin_unlock(&mm->ioctx_lock); return res;