diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 65689cbc362d..89eeca5bb23e 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1122,6 +1122,8 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
 
 	ret = update_ref_for_cow(trans, root, buf, cow, &last_ref);
 	if (ret) {
+		btrfs_tree_unlock(cow);
+		free_extent_buffer(cow);
 		btrfs_abort_transaction(trans, ret);
 		return ret;
 	}
@@ -1129,6 +1131,8 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
 	if (test_bit(BTRFS_ROOT_REF_COWS, &root->state)) {
 		ret = btrfs_reloc_cow_block(trans, root, buf, cow);
 		if (ret) {
+			btrfs_tree_unlock(cow);
+			free_extent_buffer(cow);
 			btrfs_abort_transaction(trans, ret);
 			return ret;
 		}
@@ -1160,6 +1164,8 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
 		if (last_ref) {
 			ret = tree_mod_log_free_eb(root->fs_info, buf);
 			if (ret) {
+				btrfs_tree_unlock(cow);
+				free_extent_buffer(cow);
 				btrfs_abort_transaction(trans, ret);
 				return ret;
 			}