Apparent memory issues:
[Thu Jan 31 11:46:23 2019] EDAC sbridge MC0: HANDLING MCE MEMORY ERROR [Thu Jan 31 11:46:23 2019] EDAC sbridge MC0: CPU 0: Machine Check Event: 0 Bank 255: 940000000000009f [Thu Jan 31 11:46:23 2019] EDAC sbridge MC0: TSC 2c44127a3c3 [Thu Jan 31 11:46:23 2019] EDAC sbridge MC0: ADDR 77b4ea7000 [Thu Jan 31 11:46:23 2019] EDAC sbridge MC0: MISC 0 [Thu Jan 31 11:46:23 2019] EDAC sbridge MC0: PROCESSOR 0:406f1 TIME 1548935183 SOCKET 0 APIC 0 [Thu Jan 31 11:46:23 2019] EDAC MC1: 0 CE memory read error on CPU_SrcID#1_Ha#1_Chan#0_DIMM#0 (channel:4 slot:0 page:0x77b4ea7 offset:0x0 grain:32 syndrome:0x0 - area:DRAM err_code:0000:009f socket:1 ha:1 channel_mask:1 rank:0)
In racadm:
Record: 6 Date/Time: 01/31/2019 11:08:26 Source: system Severity: Critical Description: CPU 1 machine check error detected. ------------------------------------------------------------------------------- Record: 2 Date/Time: 11/16/2018 19:16:14 Source: system Severity: Non-Critical Description: Correctable memory error rate exceeded for DIMM_B3. ------------------------------------------------------------------------------- Record: 3 Date/Time: 11/16/2018 19:16:37 Source: system Severity: Critical Description: Correctable memory error rate exceeded for DIMM_B3. ------------------------------------------------------------------------------- Record: 24 Date/Time: 01/31/2019 11:11:08 Source: system Severity: Ok Description: An OEM diagnostic event occurred. -------------------------------------------------------------------------------
Perhaps similar to T175585: cp4021 memory hardware issue - DIMM B1.
Netbox link: https://netbox.wikimedia.org/dcim/devices/1359/
System is in warranty via Dell until 2020-05-06.