Bug 590188 - RHEL 5 guest memory inflates to ridiculous size (179.13 GB) and boot fails
Summary: RHEL 5 guest memory inflates to ridiculous size (179.13 GB) and boot fails
Status: CLOSED DUPLICATE of bug 566261
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: virt-manager
Version: 6.0
Hardware: All
OS: Linux
Target Milestone: rc
: ---
Assignee: Cole Robinson
QA Contact: Virtualization Bugs
Depends On:
TreeView+ depends on / blocked
Reported: 2010-05-08 00:19 UTC by Zachary Amsden
Modified: 2010-05-10 12:38 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2010-05-10 12:38:26 UTC
Target Upstream Version:

Attachments (Terms of Use)
Screenshot of guest panic (29.27 KB, image/png)
2010-05-08 00:21 UTC, Zachary Amsden
no flags Details
screenshot of virt-manager (249.28 KB, image/png)
2010-05-08 00:22 UTC, Zachary Amsden
no flags Details
Screenshot showing reported memory and actual size in top (197.21 KB, image/png)
2010-05-08 00:22 UTC, Zachary Amsden
no flags Details

Description Zachary Amsden 2010-05-08 00:19:24 UTC
Description of problem:

Power on of 64-bit Linux guest in virt manager blew up completely.  System hangs with kernel panic at "Starting udev" and virt management tools say the VM is consuming 179.13 GB of memory.  This is clearly impossible.

Guest was an old guest which worked fine in RHEL 5.5 virt-manager, on a filesystem shared with a RHEL 6 boot.  I created a new VM in virt manager using the old disk.

Attempts to set guest memory back to 512 M resulted in the same failure.  So did 1GB.  I removed the virtio disk over concern it could be causing the boot to fail.  The guest with IDE disk failed the same way.

Running qemu-kvm from the command line did not exhibit the problem; this leads me to suspect something in libvirt or virt-manager running afoul.

Version-Release number of selected component (if applicable):

How reproducible:  100%

Steps to Reproduce:
1.  Create VM from existing disk
2.  Go through silly ISO media exercise.. no media or install needed
3.  Disconnect CDROM, power off and back on
Actual results:

Massive memory usage reported by virt monitoring tools; not reported as such by kernel or qemu process.

Expected results:

Boots fine

Additional info:


Comment 1 Zachary Amsden 2010-05-08 00:21:02 UTC
Created attachment 412465 [details]
Screenshot of guest panic

Comment 2 Zachary Amsden 2010-05-08 00:22:01 UTC
Created attachment 412466 [details]
screenshot of virt-manager

Comment 3 Zachary Amsden 2010-05-08 00:22:44 UTC
Created attachment 412467 [details]
Screenshot showing reported memory and actual size in top

Comment 5 RHEL Program Management 2010-05-08 01:35:44 UTC
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for

Comment 6 Cole Robinson 2010-05-10 12:38:26 UTC
Pretty sure this was a libvirt bug affecting the beta, should be fixed with newer builds.

*** This bug has been marked as a duplicate of bug 566261 ***

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