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== Comment: #0 - Haren Myneni <hbabu@xxxxxxxxxx> - 2015-09-19 20:35:29 ==
---Problem Description---
Hardware team reported some rare data corruption during uncompression for nx842 co-processor. It might provide user with invalid data after uncompression. So the fix is add CRC support - means Linux adds CRC flag before calling the nx842 so that CRC will be added and checked during compression and uncompression calls.  

 
Contact Information = hbabu@xxxxxxxxxx 
 
---uname output---
Ubuntu 15.10
 
Machine Type = power8 
 
---Debugger---
A debugger is not configured
 
---Steps to Reproduce---
 HW team reported this issue and discussed with them for the possible solution.
 
Stack trace output:
 no
 
Oops output:
 no
 
System Dump Info:
  The system is not configured to capture a system dump.
 
*Additional Instructions for hbabu@xxxxxxxxxx: 
-Attach sysctl -a output output to the bug.

== Comment: #1 - Haren Myneni <hbabu@xxxxxxxxxx> - 2015-09-19 20:36:14 ==
The fix is simple with just adding CRC flags before invoking nx842 coprocessor calls. Posted patch and waiting for maintainer to get in to his tree. 

http://marc.info/?l=linux-crypto-vger&m=144270742211554&w=2

Please include this fix in ubuntu 15.10 release.

** Affects: linux (Ubuntu)
     Importance: High
     Assignee: Canonical Kernel Team (canonical-kernel-team)
         Status: Triaged


** Tags: architecture-ppc64le bot-comment bugnameltc-130892 severity-high targetmilestone-inin---
-- 
nx842: Corrupted data during uncompression due to HW issue
https://bugs.launchpad.net/bugs/1497878
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