tree 4d1217d25ff2d2e6db70e11a04ce52f82a781cb8
parent 31ade3b83e1821da5fbb2f11b5b3d4ab2ec39db8
author Mike Snitzer <snitzer@redhat.com> 1448313885 -0500
committer Mike Snitzer <snitzer@redhat.com> 1449080434 -0500

dm btree: fix leak of bufio-backed block in btree_split_sibling error path

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>
Cc: stable@vger.kernel.org