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| author | Mike Snitzer <snitzer@redhat.com> | 2015-11-24 00:24:45 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-20 01:28:23 +0300 |
| commit | 7435c303d7e85e47738282becc3c8e15b4b02c06 (patch) | |
| tree | fdbcb096171934d9c54081649dacd50387d41f7c | |
| parent | f6d45a66d0c5a4c5747df0b8a6eebaaa1126b56e (diff) | |
| download | linux-7435c303d7e85e47738282becc3c8e15b4b02c06.tar.xz | |
dm btree: fix leak of bufio-backed block in btree_split_sibling error path
commit 30ce6e1cc5a0f781d60227e9096c86e188d2c2bd upstream.
The block allocated at the start of btree_split_sibling() is never
released if later insert_at() fails.
Fix this by releasing the previously allocated bufio block using
unlock_block().
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/md/persistent-data/dm-btree.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/persistent-data/dm-btree.c b/drivers/md/persistent-data/dm-btree.c index 0e09aef43998..88c287db3bde 100644 --- a/drivers/md/persistent-data/dm-btree.c +++ b/drivers/md/persistent-data/dm-btree.c @@ -471,8 +471,10 @@ static int btree_split_sibling(struct shadow_spine *s, unsigned parent_index, r = insert_at(sizeof(__le64), pn, parent_index + 1, le64_to_cpu(rn->keys[0]), &location); - if (r) + if (r) { + unlock_block(s->info, right); return r; + } if (key < le64_to_cpu(rn->keys[0])) { unlock_block(s->info, right); |