Bug 591611 - virtio balloon should not use pages from kernel's reserve pools for fill requests [rhel-5.5.z]
Summary: virtio balloon should not use pages from kernel's reserve pools for fill requ...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.6
Hardware: All
OS: Linux
high
medium
Target Milestone: rc
: ---
Assignee: Jiri Pirko
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On: 584683
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-05-12 17:19 UTC by RHEL Program Management
Modified: 2015-05-05 01:19 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
The virtio balloon driver was able to access the virtual guest's kernel's reservation pools in order to satisfy a balloon request, which could have caused a kernel of the virtual guest to run out of memory when attempting to satisfy the host operating system's request to donate free memory pages. This has been fixed so that virtual guests do not run out of memory when guest memory usage is high.
Clone Of:
Environment:
Last Closed: 2010-07-01 18:29:33 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2010:0504 0 normal SHIPPED_LIVE Important: kernel security and bug fix update 2010-07-01 18:26:58 UTC

Description RHEL Program Management 2010-05-12 17:19:45 UTC 
This bug has been copied from bug #584683 and has been proposed
to be backported to 5.5 z-stream (EUS).
Comment 2 Jiri Pirko 2010-06-02 11:11:50 UTC 
in 2.6.18-194.5.1.el5
Comment 5 Quan Wenli 2010-06-18 06:13:56 UTC 
As the result parts show unfriendly in the previous comments,Correct it again.

Version            |Result
===================+=============================================================
2.6.18-194.el5     |Run out of mem
                   |Show message "'vballoon: page allocation failure.order:0, 
                   |mode:0x210d2'."This happens *after* the emergency reserve 
                   |pages from the kernel have been used.
                   |Detail in log-2.6.18-194  
                   |FAIL 
-------------------+-------------------------------------------------------------
2.6.18-194.7.1.el5 |Run out of me
                   |can not see message "'vballoon: page allocation 
                   |failure.order:0, mode:0x210d2'."means it's just
                   |going to relax and find pages in a later run.
                   |Detail in log-2.6.18-194.7.1
                   |PASS
===================+=============================================================

So this bug has been fixed in kernel 2.6.18-194.7.1.el5,can be closed.
Comment 10 Douglas Silas 2010-06-28 20:19:00 UTC 
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.

New Contents:
The virtio balloon driver was able to access the virtual guest's kernel's reservation pools in order to satisfy a balloon request, which could have caused a kernel of the virtual guest to run out of memory when attempting to satisfy the host operating system's request to donate free memory pages. This has been fixed so that virtual guests do not run out of memory when guest memory usage is high.
Comment 12 errata-xmlrpc 2010-07-01 18:29:33 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2010-0504.html
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