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Bug 1542080

Summary: Qemu core dump at cirrus_invalidate_region
Product: Red Hat Enterprise Linux 7 Reporter: Guo, Zhiyi <zhguo>
Component: qemu-kvm-rhevAssignee: Gerd Hoffmann <kraxel>
Status: CLOSED ERRATA QA Contact: Guo, Zhiyi <zhguo>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.5CC: chayang, jinzhao, juzhang, knoel, kraxel, michen, virt-maint
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: qemu-kvm-rhev-2.12.0-4.el7 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-11-01 11:04:15 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Comment 2 Gerd Hoffmann 2018-02-05 14:37:24 UTC 
[ some more info cut+pasted ]

upstream has 8 MB for 2.8 and older, and 4 MB for 2.9 and newer machine types.

qemu-kvm traditionally has 16 MB (for rhel6 compatibility).  It should have followed upstream and use 4MB too for 2.9+ (aka rhel-7.4+) machine types (and keep the 16M for the older ones).

Didn't happen for some reason, thats why the assert() can still be triggered unless cirrus memory is explicitly set to 4 MB.
Comment 3 Gerd Hoffmann 2018-02-05 14:41:29 UTC 
I don't feel like touching it this late in the RHEL-7.5 cycle.

I think we should take care to fix this when we add the next machine type to qemu-kvm, on the next rebase.  When I remember plans correctly (no more rebases in 7.x) this means for RHEL-8 ...
Comment 4 Gerd Hoffmann 2018-06-13 10:04:47 UTC 
OK, we got a new 7.6 machine type, so we can fix this for 7.6.
Comment 6 Miroslav Rezanina 2018-06-19 18:37:26 UTC 
Fix included in qemu-kvm-rhev-2.12.0-4.el7
Comment 9 errata-xmlrpc 2018-11-01 11:04:15 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:3443