group.of.nepali.translators team mailing list archive

Thread
Date

[Bug 1823037] [NEW] amd_iommu possible data corruption

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Jeff Lane <jeffrey.lane@xxxxxxxxxxxxx>
Date: Wed, 03 Apr 2019 15:20:15 -0000
Reply-to: Bug 1823037 <1823037@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

Public bug reported:

[Impact]
If a device has an exclusion range specified in the IVRS table, this region needs to be reserved in the iova-domain of that device. This hasn't happened until now and can cause data corruption on data transfered with these devices.
    
Treat exclusion ranges as reserved regions in the iommu-core to fix the problem.

This is a clean cherry pick from mainline of
8aafaaf2212192012f5bae305bb31cdf7681d777


[Test Case]


[Fixes]
Cherry pick the following from Mainline
fd3b3448cf5adc2a2f09b70eaad03c27fe79e7a6 iommu/amd: Reserve exclusion range in iova-domain

[Regression Risk]
Only affects the amd_iommu driver:
    drivers/iommu/amd_iommu*

** Affects: linux (Ubuntu)
     Importance: Medium
     Assignee: Jeff Lane (bladernr)
         Status: In Progress

** Affects: linux (Ubuntu Bionic)
     Importance: Undecided
     Assignee: Jeff Lane (bladernr)
         Status: New

** Affects: linux (Ubuntu Cosmic)
     Importance: Undecided
     Assignee: Jeff Lane (bladernr)
         Status: New

** Affects: linux (Ubuntu Disco)
     Importance: Medium
     Assignee: Jeff Lane (bladernr)
         Status: In Progress

** Also affects: linux (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Cosmic)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** No longer affects: linux (Ubuntu Xenial)

-- 
You received this bug notification because you are a member of नेपाली
भाषा समायोजकहरुको समूह, which is subscribed to Xenial.
Matching subscriptions: Ubuntu 16.04 Bugs
https://bugs.launchpad.net/bugs/1823037

Title:
  amd_iommu possible data corruption

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Bionic:
  New
Status in linux source package in Cosmic:
  New
Status in linux source package in Disco:
  In Progress

Bug description:
  [Impact]
  If a device has an exclusion range specified in the IVRS table, this region needs to be reserved in the iova-domain of that device. This hasn't happened until now and can cause data corruption on data transfered with these devices.
      
  Treat exclusion ranges as reserved regions in the iommu-core to fix the problem.

  This is a clean cherry pick from mainline of
  8aafaaf2212192012f5bae305bb31cdf7681d777

  
  [Test Case]

  
  [Fixes]
  Cherry pick the following from Mainline
  fd3b3448cf5adc2a2f09b70eaad03c27fe79e7a6 iommu/amd: Reserve exclusion range in iova-domain

  [Regression Risk]
  Only affects the amd_iommu driver:
      drivers/iommu/amd_iommu*

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1823037/+subscriptions