From mboxrd@z Thu Jan  1 00:00:00 1970
From: Zhang AiHua <zhangaihua1@huawei.com>
Subject: Hi, Is this a problem?
Date: Fri, 23 Sep 2016 15:05:39 +0800
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mount£º
overlay on /tmp type overlay (rw,relatime,lowerdir=/home/zah/lower,upperdir=/home/zah/upper,workdir=/home/zah/workdir)
/dev/mapper/fedora-home on /home type ext4 (rw,relatime,data=ordered)

problem as below:
[root@localhost tmp]# mkdir zzz
[root@localhost tmp]# chown -R zah zzz
[root@localhost tmp]# su zah
mktemp: failed to create file via template �tmp/.colorlsXXX� Permission denied
bash: $TMP: ambiguous redirect
[zah@localhost tmp]$
[zah@localhost tmp]$
[zah@localhost tmp]$
[zah@localhost tmp]$ ls -alt |grep zzz
drwxr-xr-x   2 zah  root   4096 Sep 24 02:03 zzz
[zah@localhost tmp]$ rm -fr zzz
rm: cannot remove ‘zzz� Permission denied
[zah@localhost tmp]$

Is this a problem?