Memory for crash kernel (0x0 to 0x0) notwithin permissible range

解决办法：

       这个信息由于没有配置kdump服务的原因，并没有什么危害可以忽略。kdump是一个新的，而且非常可信赖的内核崩溃转储机制。我们可以采用下面的图形界面进行配置和启用，步骤如下：

（1）配置kdump。

选择菜单“Applications”——“system tools”——“kdump”，弹出“Kernel Dump Configuration”窗口，选中Enable kdump，设置New kdump Memory(MB): 128MB（推荐大小），location:file:///var/crash(也可以设置其他位置，用来存放当系统崩溃时的转储镜像)。

（2）重新启动系统，错误消失。

glibc版本查看

4.9.	How can I find out which version of glibc I am using in the moment?

{UD} If you want to find out about the version from the command line simply
run the libc binary.  This is probably not possible on all platforms but
where it is simply locate the libc DSO and start it as an application.  On
Linux like

	/lib/libc.so.6

This will produce all the information you need.

What always will work is to use the API glibc provides.  Compile and run the
following little program to get the version information:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#include <stdio.h>
#include <gnu/libc-version.h>
int main (void) { puts (gnu_get_libc_version ()); return 0; }
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

This intece can also obviously be used to perform tests at runtime if
this should be necessary.