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I happened to have a terminal window open in Linux (Debian) and, as I was browsing the web, I heard a beep so I looked to see what happened and I found the following message in the terminal window:
Message from syslogd@orion at Jul 26 06:20:44 ...
kernel:[47674.818576] [Hardware Error]: Corrected error, no action required.
Message from syslogd@orion at Jul 26 06:20:44 ...
kernel:[47674.818620] [Hardware Error]: CPU:0 (15:2:0) MC4_STATUS[-|CE|MiscV|-|AddrV|-|-|CECC]: 0x9d6c4094011c011b
Message from syslogd@orion at Jul 26 06:20:44 ...
kernel:[47674.818626] [Hardware Error]: MC4 Error Address: 0x000000000144fb64
Message from syslogd@orion at Jul 26 06:20:44 ...
kernel:[47674.818630] [Hardware Error]: MC4 Error (node 0): L3 data cache ECC error.
Message from syslogd@orion at Jul 26 06:20:44 ...
kernel:[47674.818633] [Hardware Error]: cache level: L3/GEN, tx: GEN, mem-tx: RD
Is this bad? Should I worry about my CPU?
f.ardelian
Posted 2015-07-26T03:28:42.283
Reputation: 737
That could be caused by actual hardware error or a kernel bug. You should run at least 2 passes of Memtest scan to make sure. If you don't get errors in Memtest, you have a buggy kernel and should upgrade/downgrade it. – Larssend – 2015-07-26T05:21:45.490
Almost forgot. A buggy BIOS can also trigger that kind of error in the kernel. – Larssend – 2015-07-26T05:27:49.713
It was the RAM. It's been 3 and a half years... I don't know why I didn't reply to you soonner. @Larssend please put your comment as answer so I can mark it as correct. Memtest showed that the RAM was defective. Thank you! – f.ardelian – 2019-02-10T16:04:55.590