block: Null pointer dereference in blk_root_get_parent_desc()
The dev_id returned by the call to blk_get_attached_dev_id() in blk_root_get_parent_desc() can be NULL (an internal call to object_get_canonical_path may have returned NULL). Instead of just checking this case before before dereferencing, adjust blk_get_attached_dev_id() to return the empty string if no object path can be found (similar to the case when blk->dev is NULL and an empty string is returned). Signed-off-by: NLiam Merwick <Liam.Merwick@oracle.com> Message-id: 1541453919-25973-3-git-send-email-Liam.Merwick@oracle.com Reviewed-by: NMax Reitz <mreitz@redhat.com> Signed-off-by: NMax Reitz <mreitz@redhat.com>
Showing
想要评论请 注册 或 登录