Bug 2020630
| Summary: | qemu crash when rebooting VM with vhost-vdpa port | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Pei Zhang <pezhang> |
| Component: | qemu-kvm | Assignee: | Eugenio Pérez Martín <eperezma> |
| qemu-kvm sub component: | Networking | QA Contact: | Pei Zhang <pezhang> |
| Status: | CLOSED ERRATA | Docs Contact: | |
| Severity: | high | ||
| Priority: | high | CC: | aadam, chayang, jinzhao, jmaloy, juzhang, leiyang, virt-maint, wquan |
| Version: | 8.6 | Keywords: | Regression, Triaged |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-6.2.0-1.module+el8.6.0+13725+61ae1949 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2022-05-10 13:24:11 UTC | Type: | --- |
| 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: | 2027716 | ||
| Bug Blocks: | |||
Mass update of DTM/ITM to +3 values since the rebase of qemu-6.2 into RHEL 8.6 has been delayed or slowed due to process roadblocks (authentication changes, gating issues). This avoids the DevMissed bot and worse the bot that could come along and strip release+. The +3 was chosen mainly to give a cushion. Also added the qemu-6.2 rebase bug 2027716 as a dependent. QE bot(pre verify): Set 'Verified:Tested,SanityOnly' as gating/tier1 test pass. Verified with qemu-kvm-6.2.0-2.module+el8.6.0+13738+17338784.x86_64: Following steps in Description, qemu and guest keep working well after several reboot. So this issue has been fixed very well. Move to Verified. 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: virt:rhel and virt-devel:rhel 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-2022:1759 |
Description of problem: Boot VM with vhost-vdpa, then qemu will crash when rebooting the VM. Version-Release number of selected component (if applicable): 4.18.0-348.4.el8.x86_64 qemu-kvm-6.1.50-4.scrmod+el8.6.0+13148+60ec5265.wrb211103.x86_64 libvirt-7.9.0-1.module+el8.6.0+13150+28339563.x86_64 How reproducible: 100% Steps to Reproduce: 1. Setup vhost-vdpa # modprobe vhost_vdpa # modprobe mlx5_vdpa # ulimit -l unlimited # echo 1 > /sys/bus/pci/devices/0000\:3b\:00.0/sriov_numvfs # vdpa mgmtdev show pci/0000:3b:00.2: supported_classes net # vdpa dev add name vdpa0 mgmtdev pci/0000:3b:00.2 # vdpa dev list vdpa0: type network mgmtdev pci/0000:3b:00.2 vendor_id 5555 max_vqs 16 max_vq_size 256 # ls /dev/vhost-vdpa-0 /dev/vhost-vdpa-0 2. Boot VM with vhost-vdpa port <interface type='vdpa'> <mac address='18:66:da:5f:dd:02'/> <source dev='/dev/vhost-vdpa-0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x06' slot='0x00' function='0x0'/> </interface> 3. Reboot VM # reboot 4. After step 3, qemu will crash # virsh list --all Id Name State -------------------------- - rhel8.6 shut off # cat /var/log/libvirt/qemu/rhel8.6.log ... 2021-11-05T12:47:31.904537Z qemu-kvm: vhost_set_features failed: Device or resource busy (16) 2021-11-05T12:47:31.908732Z qemu-kvm: unable to start vhost net: 16: falling back on userspace virtio 2021-11-05 12:47:37.018+0000: shutting down, reason=crashed Actual results: qemu crash. Expected results: qemu should not crash. Additional info: 1. This is a regression bug. qemu-kvm-6.1.0-4.module+el8.6.0+13039+4b81a1dc.x86_64 works well qemu-kvm-6.1.50-4.scrmod+el8.6.0+13148+60ec5265.wrb211103.x86_64 qemu crash