[PATCH 1/3] Btrfs: fix possible memory leak in find_parent_nodes()

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Signed-off-by: Wang Shilong <wangsl.fnst@xxxxxxxxxxxxxx>
Reviewed-by: Miao Xie <miaox@xxxxxxxxxxxxxx>
---
 fs/btrfs/backref.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index cb73a12..54e7610 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -911,7 +911,6 @@ again:
 
 	while (!list_empty(&prefs)) {
 		ref = list_first_entry(&prefs, struct __prelim_ref, list);
-		list_del(&ref->list);
 		WARN_ON(ref->count < 0);
 		if (ref->count && ref->root_id && ref->parent == 0) {
 			/* no parent == root of tree */
@@ -954,6 +953,7 @@ again:
 				eie->next = ref->inode_list;
 			}
 		}
+		list_del(&ref->list);
 		kfree(ref);
 	}
 
-- 
1.8.0.1

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