Set the next of the returned node of llist_del_first
to NULL, which can prevent subsequent nodes in llist
from being exposed, and is more consistent with the
logic of this interface.
Signed-off-by: liqiang <liqiang64@huawei.com>
---
lib/llist.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/llist.c b/lib/llist.c
index f21d0cf..c33fff5 100644
--- a/lib/llist.c
+++ b/lib/llist.c
@@ -61,6 +61,7 @@ struct llist_node *llist_del_first(struct llist_head *head)
next = READ_ONCE(entry->next);
} while (!try_cmpxchg(&head->first, &entry, next));
+ entry->next = NULL;
return entry;
}
EXPORT_SYMBOL_GPL(llist_del_first);
--
2.23.0.windows.1