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CentOS7服务器报错，内容如下：
[0.1374880] [Firmware But]: the BIOS has corrupted hw-PMU resources (MRS 38d is b0)
[2.073679] i8042:No controller found
[2.076249] mce: Unable to init device /dev/mcelog (rc: -5)
kdump: dump target is /dev/mapper/vg-lv_root
kdump: saving to /sysroot/var/crash/127.0.0.1-2021-12-31-19:38:51/
想尽办法开机后，坚持不了多久又会挂掉，开启EDAC服务或加载EDAC内核模块后，在开机的间隙，检查了一下内存。
[root@33f ~]# grep "[0-9]" /sys/devices/system/edac/mc/mc*/csrow*/ch*_ce_count
执行结果如下：
/sys/devices/system/edac/mc/mc0/csrow3/ch0_ce_count:9630
/sys/devices/system/edac/mc/mc0/csrow3/ch1_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow2/ch0_ce_count:0
/sys/devices/system/edac/mc/mc1/csrow2/ch1_ce_count:20229
count不为0的行即代表存在内存错误。
mc*:第几个CPU控制器。
csrow*：内存通道。
ch*：通道内的第几根内存。
这时候可以判断mc0 3通道 0号内存 和 mc1 2号通道第一条内存故障，更换内存后，问题得到解决，顺利开机。
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