Subject: Re: spurious mce Hardware Error messages in next-20250912

From: Yazen Ghannam <[email-masked]>
Date: Wed, 17 Sep 2025 10:41:48 -0400

On Wed, Sep 17, 2025 at 09:13:11AM +0200, Bert Karwatzki wrote:
> Am Dienstag, dem 16.09.2025 um 22:27 +0200 schrieb Bert Karwatzki:
[...]
> 
> I ran a test for 10h and got one real deferred error, I also looked through
> older logs (which only go back to 2025-08-17) and they do not contain any
> mce Hardware errors. Here's the output of
> 
> $ dmesg | grep -E "mce|Hardware Error"
> [  333.338548] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [  333.338559] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [  661.018541] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8700aa8800000000
> [  661.018553] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [  988.698558] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013b
> [  988.698568] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [ 1316.378440] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013b
> [ 1316.378452] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [ 1644.058491] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9413b
> [ 1644.058503] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [ 1971.738263] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a5c13a
> [ 1971.738271] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 2299.418242] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a9413a
> [ 2299.418249] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [ 2627.098248] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 2627.098256] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 2954.778252] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 2954.778259] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 3282.458257] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400a2c800b0c155
> [ 3282.458264] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8400a2c800ae8156
> [ 3610.139239] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400a2c800b0c155
> [ 3610.139244] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 3937.818244] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 3937.818251] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 4265.498243] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [ 4265.498251] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8400aa4800a7813b
> [ 4593.178503] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 4593.178509] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 4920.858243] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a9413a
> [ 4920.858250] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a7813b
> [ 5248.538455] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 5248.538462] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 5576.218247] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 5576.218255] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 5903.898266] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424ac4800a68133
> [ 5903.898273] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424abc800ab814f
> [ 6231.578280] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013a
> [ 6231.578291] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8400aa4800a7813b
> [ 6559.258262] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424ac4800a34133
> [ 6559.258269] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 6886.938260] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 6886.938267] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 7214.618259] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a5c13a
> [ 7214.618265] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 7542.298249] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 7542.298259] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 7869.978261] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 7869.978268] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 8197.658242] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424ac4800a68133
> [ 8197.658249] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [ 8525.338253] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [ 8525.338263] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 8853.018261] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [ 8853.018268] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [ 9180.698246] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a9413a
> [ 9180.698253] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a7813b
> [ 9508.378244] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a5c13a
> [ 9508.378251] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [ 9836.058240] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a5c13a
> [ 9836.058246] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [10163.738241] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [10163.738248] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700900800000000
> [10163.739261] [   T9326] mce: [Hardware Error]: Machine check events logged
> [10163.739265] [   T9326] [Hardware Error]: Deferred error, no action required.
> [10163.739267] [   T9326] [Hardware Error]: CPU:0 (19:50:0) MC14_STATUS[-|-|-|AddrV|PCC|-|-|Deferred|-|-]: 0x8700900800000000
> [10163.739275] [   T9326] [Hardware Error]: Error Addr: 0x0095464100000020
> [10163.739276] [   T9326] [Hardware Error]: IPID: 0x000700b040000000
> [10163.739278] [   T9326] [Hardware Error]: L3 Cache Ext. Error Code: 0
> [10163.739279] [   T9326] [Hardware Error]: cache level: RESV, tx: INSN
> [10491.418242] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a5c13a
> [10491.418248] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [10819.098244] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [10819.098251] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [11146.778265] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [11146.778273] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424abc800a50134
> [11474.458240] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [11474.458247] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [11802.138254] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [11802.138265] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8400a5c800aa014b
> [12129.818252] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [12129.818259] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [12457.498260] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a9013a
> [12457.498267] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [12785.178246] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [12785.178253] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [13112.858251] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [13112.858257] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [13440.538242] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [13440.538249] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [13768.218258] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [13768.218265] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [14095.898258] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a5c13a
> [14095.898265] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [14423.578241] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [14423.578249] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424abc800a14134
> [14751.258243] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a8c139
> [14751.258251] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a7413a
> [15078.938245] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [15078.938253] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [15406.618241] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [15406.618248] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8400a3c800acc152
> [15734.298248] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [15734.298255] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [16061.978243] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [16061.978250] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [16389.658247] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [16389.658254] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [16717.338261] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [16717.338268] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [17045.018239] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [17045.018246] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [17372.698252] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400a4c800adc14e
> [17372.698259] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x84008ec800c80188
> [17700.378422] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8700aa0800000000
> [17700.378433] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [18028.058269] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424ac4800a30134
> [18028.058278] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424abc800a18135
> [18355.738423] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8700aa8800000000
> [18355.738435] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [18683.418450] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa8800000000
> [18683.418462] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [19011.098284] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8700aa8800000000
> [19011.098294] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [19338.778473] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa8800000000
> [19338.778483] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700a28800000000
> [19666.458480] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724ac0800000000
> [19666.458493] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700a28800000000
> [19994.138515] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8700aa8800000000
> [19994.138527] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [20321.818576] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [20321.818587] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700a28800000000
> [20649.498506] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a9013c
> [20649.498517] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724ab8800000000
> [20977.178462] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a9013c
> [20977.178474] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a7413d
> [21304.858526] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013c
> [21304.858538] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [21632.538259] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013c
> [21632.538270] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700a28800000000
> [21960.218257] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [21960.218268] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [22287.898426] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [22287.898437] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [22615.578456] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013c
> [22615.578467] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [22943.258444] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013c
> [22943.258454] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [23270.938455] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x84008dc800cc818f
> [23270.938467] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [23598.618475] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [23598.618485] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [23926.298262] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a9013c
> [23926.298273] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [24253.978513] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [24253.978524] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724ab8800000000
> [24581.658496] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8700aa0800000000
> [24581.658507] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [24909.338474] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013c
> [24909.338486] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [25237.018513] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8700aa0800000000
> [25237.018520] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700a20800000000
> [25564.698280] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013c
> [25564.698292] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [25892.378257] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013c
> [25892.378268] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [26220.058272] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a5c13c
> [26220.058279] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [26547.738258] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013c
> [26547.738265] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [26875.418266] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a34135
> [26875.418276] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424abc800a10136
> [27203.098459] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400aa4800a9013c
> [27203.098472] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [27530.778493] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [27530.778504] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [27858.458406] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [27858.458414] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724ab8800000000
> [28186.138241] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013b
> [28186.138249] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13c
> [28513.818242] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013b
> [28513.818249] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424a9c800a4013c
> [28841.498247] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a5c13a
> [28841.498254] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [29169.178271] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [29169.178281] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [29496.858247] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a9413a
> [29496.858254] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [29824.538243] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [29824.538256] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [30152.218241] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [30152.218248] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [30479.898242] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [30479.898249] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [30807.578254] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [30807.578261] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8400a44800ac0150
> [31135.258244] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400a34800b00153
> [31135.258252] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [31462.938242] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [31462.938249] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [31790.618243] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [31790.618250] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [32118.298254] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [32118.298261] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x84008f4800c78187
> [32445.978248] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [32445.978254] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [32773.658242] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a6013a
> [32773.658249] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [33101.338251] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424ac4800a30132
> [33101.338259] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3c13b
> [33429.018251] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a58139
> [33429.018262] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a3813a
> [33756.698247] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400a54800ad414d
> [33756.698254] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8424aa4800a7813b
> [34084.378241] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aa4800a9413a
> [34084.378247] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724ab8800000000
> [34412.058256] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8700a28800000000
> [34412.058265] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [34739.738409] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8400a4c800ae4151
> [34739.738421] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> [35067.418242] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [35067.418248] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700aa0800000000
> [35395.098491] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8724aa0800000000
> [35395.098501] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8700a28800000000
> [35722.778629] [      C0] mce: DEBUG: CPU0 Bank:11 Status:0x8424aac800a8c13b
> [35722.778640] [      C0] mce: DEBUG: CPU0 Bank:14 Status:0x8724aa0800000000
> 

Summary so far:
1) Errors are found on CPU0 banks 11 and 14.
2) Errors are found during MCA timer-based polling.
3) The data is coming from MCA_DESTAT register.
4) The status bits are not consistent with documentation.
5) Likely these errors are not generating a deferred error interrupt.

Bert, can you please collecting the following data?

1) Output of "/proc/interrupts".
  a) The MCE, MCP, THR, and DFR lines are of interest.
  b) We should verify if any other notification types occur besides
     "MCP" (MCA polling).

2) Using an older kernel, read the MCA_DESTAT registers for L3 cache.
  a) CPU0 bank 11: "sudo rdmsr -p 0 0xC00020b8"
  b) CPU0 bank 14: "sudo rdmsr -p 0 0xC00020e8"
  c) If these are non-zero, then I think we can confirm that the
     spurious data was always there.

Thanks,
Yazen