** Changed in: linux (Ubuntu Zesty)
       Status: In Progress => Won't Fix

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  [Artful/Zesty] ACPI APEI error handling bug fixes

Status in linux package in Ubuntu:
  Fix Committed
Status in linux source package in Zesty:
  Won't Fix
Status in linux source package in Artful:
  Fix Committed

Bug description:
  Error records which have multiple errors in them will incorrectly report all 
errors after the first one. This results in garbage non-standard error trace 
events to be generated, and for AER and MC errors there will be no kernel 
action to help recover from these errors in the AER and EDAC drivers.

  Patches in Linus tree fixes this issue:
  aaf2c2fb0f51 ACPI / APEI: clear error status before acknowledging the error
  c4335fdd3822 ACPI: APEI: fix the wrong iteration of generic error status block

  Insert a e1000 pcie card into the system, run the following command that 
should generate PCIe correctable errors, you will see only the first error in 
each GHES report go to the AER driver rather than all errors from the GHES 

  $ sudo setpci -s 0002:00:00.0 0x70c.l=0x00808000;sudo setpci -s
  0002:00:00.0 CAP_EXP+0x10.B=0x4b;sleep 1;sudo setpci -s 0002:00:00.0

  Where "0002:00:00.0" being the root hub for the card.

  Used JTAG to trigger multiple concurrent errors, and observed that all
  errors were parsed, instead of just the first one. As mentioned in
  comment #3. So, the poster of comment #3 will do the verification once
  the patch lands in -proposed.

  [Regression Potential]
  The two patches to ACPI APEI driver was cleanly cherry picked from linus's 
tree and applied to Artful and Zesty. The patches were tested on QDF2400 
platform where it was found to issue and don't introduce any regressions.

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