This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1857413

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1857413

Title:
  mce: ras:  When inject 1bit ecc error,  there is no mce log recorded
  in the dmesg

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Using Linux kernel, When inject 1bit ecc error,  there are some mce
  log recorded in the dmesg.like:

  [ 1561.511210] mce: [Hardware Error]: Machine check events logged
  [ 1561.511221] [Hardware Error]: Corrected error, no action required.
  [ 1561.511311] [Hardware Error]: CPU:0 (18:0:2) 
MC16_STATUS[Over|CE|MiscV|-|AddrV|-|-|SyndV|-|CECC]: 0xdc2040000000011b
  [ 1561.511388] [Hardware Error]: Error Addr: 0x000000077cd66940
  [ 1561.511439] [Hardware Error]: IPID: 0x0000009600150f00, Syndrome: 
0x000010ce0a400d01
  [ 1561.511499] [Hardware Error]: Unified Memory Controller Extended Error 
Code: 0
  [ 1561.511556] [Hardware Error]: Unified Memory Controller Error: DRAM ECC 
error.
  [ 1561.511646] EDAC MC0: 1 CE on mc#0csrow#1channel#1 (csrow:1 channel:1 
page:0x7fcd66 offset:0x940 grain:0 syndrome:0x10ce)
  [ 1561.511648] [Hardware Error]: cache level: L3/GEN, tx: GEN, mem-tx: RD

  *But, there are no the log when Using "Ubuntu 18.04.3 LTS"*

  The upstream related commit is
  de0e0624d86ff9fc512dedb297f8978698abf21a .

  After merged this commit, Ubuntu kernel's dmesg can record the mce log
  as well.

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