[PATCH 3/5] mm/vmalloc: Initialize VA's list node after unlink

Uladzislau Rezki (Sony)
2022-06-07T09:36:06Z

A vmap_area can travel between different places. For example
attached/detached to/from different rb-trees. In order to
prevent fancy bugs, initialize a VA's list node after it is
removed from the list, so it pairs with VA's rb_node which
is also initialized.

There is no functional change as a result of this patch.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
mm/vmalloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 745e89eb6ca1..82771e555273 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -978,7 +978,7 @@ __unlink_va(struct vmap_area *va, struct rb_root *root, bool augment)
else
rb_erase(&va->rb_node, root);

- list_del(&va->list);
+ list_del_init(&va->list);
RB_CLEAR_NODE(&va->rb_node);
}

--
2.30.2