Bug 2070804

Summary: PXE boot crash qemu when using multiqueue vDPA
Product: Red Hat Enterprise Linux 9 Reporter: jason wang <jasowang>
Component: qemu-kvmAssignee: jason wang <jasowang>
qemu-kvm sub component: Networking QA Contact: Lei Yang <leiyang>
Status: CLOSED ERRATA Docs Contact:
Severity: high    
Priority: high CC: aadam, coli, jinzhao, juzhang, leiyang, lvivier, virt-maint, yalzhang, ymankad
Version: 9.1Keywords: Triaged, ZStream
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: qemu-kvm-7.0.0-6.el9 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 2069946
: 2095795 (view as bug list) Environment:
Last Closed: 2022-11-15 09:54:42 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:
Bug Depends On: 2069946    
Bug Blocks: 2069038, 2095795    

Description jason wang 2022-04-01 03:03:46 UTC 
+++ This bug was initially created as a clone of Bug #2069946 +++

Description of problem:

Boot through PXE on a vDPA device will crash Qemu.

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


How reproducible:

100%

Steps to Reproduce:
1. create 8 queues vDPA device via vdpa(8)
2. boot guest with -boot n
3.

Actual results:

Qemu crash

Expected results:

Qemu should work fine.

Additional info:
Comment 3 Laurent Vivier 2022-05-10 09:25:32 UTC 
*** Bug 2083068 has been marked as a duplicate of this bug. ***
Comment 4 Laurent Vivier 2022-05-10 09:26:04 UTC 
*** Bug 2082782 has been marked as a duplicate of this bug. ***
Comment 5 Laurent Vivier 2022-05-10 09:28:23 UTC 
The problem is fixed in QEMU by an ongoing series:

[PATCH v4 0/7] vhost-vdpa multiqueue fixes
https://patchew.org/QEMU/1651890498-24478-1-git-send-email-si-wei.liu@oracle.com/
Comment 15 Yanan Fu 2022-06-13 09:55:06 UTC 
QE bot(pre verify): Set 'Verified:Tested,SanityOnly' as gating/tier1 test pass.
Comment 19 Lei Yang 2022-06-15 05:16:33 UTC 
Based on comment 16, move to "VERIFIED"
Comment 21 errata-xmlrpc 2022-11-15 09:54:42 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 (Moderate: qemu-kvm security, bug fix, and enhancement update), 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/RHSA-2022:7967