100c4fb387
empty before obtaining the dev name If dev->aliases linked list is empty, then directly obtain the str address of dm_str_list saved in dev_aliases.n, an unknown address will be returned, which may cause segfault. So we need to judge whether the dev->aliases linked list is empty before getting it to avoid returning unknown address. Fix issue: https://gitee.com/src-openeuler/lvm2/issues/I4RZP9 Signed-off-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>