From 12d1c67b7b482bea0503fb9e42e9d257498b5c32 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Thu, 22 Oct 2015 10:56:40 -0400 Subject: dm btree: fix leak of bufio-backed block in btree_split_beneath error path commit 4dcb8b57df3593dcb20481d9d6cf79d1dc1534be upstream. btree_split_beneath()'s error path had an outstanding FIXME that speaks directly to the potential for _not_ cleaning up a previously allocated bufio-backed block. Fix this by releasing the previously allocated bufio block using unlock_block(). Reported-by: Mikulas Patocka Signed-off-by: Mike Snitzer Acked-by: Joe Thornber Signed-off-by: Ben Hutchings --- drivers/md/persistent-data/dm-btree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c index 62f297a44dd5..29e423f6bfa5 100644 --- a/drivers/md/persistent-data/dm-btree.c +++ b/drivers/md/persistent-data/dm-btree.c @@ -503,7 +503,7 @@ static int btree_split_beneath(struct shadow_spine *s, uint64_t key) r = new_block(s->info, &right); if (r < 0) { - /* FIXME: put left */ + unlock_block(s->info, left); return r; } -- cgit v1.2.3