mce: Unable to init device /dev/mcelog (rc: -5)

[czxkgxy]

mce: Unable to init device /dev/mcelog (rc: -5)
Centos7x suddenly hangs dead, this error appears after restarting, what is the cause?please tell me
rc ：5 looklike ？return？

[CXXF2018]

hello，have you found how to solve this problem？ Now，I also encountered this problem

[aegl]

Error code -5 is "EIO". The only place where the upstream kernel /dev/mcelog driver returns that is here:

    if (!boot_cpu_has(X86_FEATURE_MCE) || !boot_cpu_has(X86_FEATURE_MCA))
            return -EIO;

But that's in the "write" path which is only used for error injection.

Can you boot the system and try starting mcelog daemon manually running under "strace" to get some details on interactions between mcelog and your CentOS kernel.

sudo strace -o /tmp/mcelog.out -f /usr/sbin/mcelog --daemon