Hello. I met a bug and want your help. When I run a container by docker for a long time, some problems appeared. In the container, a symbolic link has been broken.The filesystem is overlay. The symlink libipfwinner.so point to libipfwinner.so.0.0.0.5. Device Info: sh-4.2$ uname -a Linux xx 4.9.29 #1 SMP PREEMPT Fri Dec 21 16:00:00 CST 2018 x86_64 x86_64 x86_64 GNU/Linux sh-4.2$ df Filesystem 1K-blocks Used Available Use% Mounted on overlay 7891460 2300196 5591264 30% / Normal: sh-4.2$ ls /lib/ -ll | grep libipfw lrwxrwxrwx 1 root root 23 Feb 21 09:31 libipfwinner.so -> libipfwinner.so.0.0.0.5 -rwxr-xr-x 1 root root 69808 Feb 21 09:31 libipfwinner.so.0.0.0.5 Bug: sh-4.2$ ls /lib/ -ll | grep libipfwinner ls: cannot read symbolic link /lib/libipfwinner.so: Invalid argument lrwxrwxrwx 1 root root 23 Feb 22 09:42 libipfwinner.so -rwxr-xr-x 1 root root 69808 Feb 22 09:42 libipfwinner.so.0.0.0.5 sh-4.2$ cat libipfwinner.so cat: libipfwinner.so: Too many levels of symbolic links I think it might be a bug of overlayfs.I cannot reproduce this problem.It only happened once. I hope you can give me some advice.Thanks!