From: Tsutomu Itoh <t-itoh@jp.fujitsu.com> Date: Tue, 16 Oct 2012 05:44:21 +0000 (+0000) Subject: Btrfs: fix memory leak in btrfs_quota_enable() X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=5b7ff5b3c4468780b15c6b20cd0567cd9f2aa626;p=openwrt%2Fstaging%2Fblogic.git Btrfs: fix memory leak in btrfs_quota_enable() We should free quota_root before returning from the error handling code. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com> --- diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 5039686df6ae..fe9d02c45f8e 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -790,8 +790,10 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans, } path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; + if (!path) { + ret = -ENOMEM; + goto out_free_root; + } key.objectid = 0; key.type = BTRFS_QGROUP_STATUS_KEY; @@ -800,7 +802,7 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans, ret = btrfs_insert_empty_item(trans, quota_root, path, &key, sizeof(*ptr)); if (ret) - goto out; + goto out_free_path; leaf = path->nodes[0]; ptr = btrfs_item_ptr(leaf, path->slots[0], @@ -818,8 +820,15 @@ int btrfs_quota_enable(struct btrfs_trans_handle *trans, fs_info->quota_root = quota_root; fs_info->pending_quota_state = 1; spin_unlock(&fs_info->qgroup_lock); -out: +out_free_path: btrfs_free_path(path); +out_free_root: + if (ret) { + free_extent_buffer(quota_root->node); + free_extent_buffer(quota_root->commit_root); + kfree(quota_root); + } +out: return ret; }