Bug 1558043
| Summary: | Guest VM with USB support enabled is unresponsive after migration | ||||||||
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| Product: | Red Hat Enterprise Linux 7 | Reporter: | Radek Duda <rduda> | ||||||
| Component: | spice-gtk | Assignee: | Victor Toso <victortoso> | ||||||
| Status: | CLOSED ERRATA | QA Contact: | SPICE QE bug list <spice-qe-bugs> | ||||||
| Severity: | high | Docs Contact: | |||||||
| Priority: | high | ||||||||
| Version: | 7.5 | CC: | cfergeau, chayang, coli, jinzhao, juzhang, michen, mtessun, ngu, qzhang, spice-qe-bugs, tpelka, victortoso, virt-maint | ||||||
| Target Milestone: | rc | Keywords: | Regression, TestBlocker, ZStream | ||||||
| Target Release: | --- | ||||||||
| Hardware: | Unspecified | ||||||||
| OS: | Unspecified | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | spice-gtk-0.35-1.el7 | Doc Type: | If docs needed, set a value | ||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | |||||||||
| : | 1559041 1590412 (view as bug list) | Environment: | |||||||
| Last Closed: | 2018-10-30 10:51:49 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: | |||||||||
| Bug Blocks: | 1559041, 1590412 | ||||||||
| Attachments: |
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Created attachment 1409869 [details]
full backtrace after migratin and closing of remote-viewer
Freeze is dependent on USB support. If disabled, there is no freeze. Reproducible also on Windows7 guest. Based on the description and investigation so far, I have the impression this is a qemu-kvm-rhev regression. Gerd, please take a look. More tests from our QE to isolate the problem and the component are also welcome. Moving back to spice-gtk, this is the client freezing, not the whole VM. After restarting the client, the VM is usable. I've bisected this to https://cgit.freedesktop.org/spice/spice-gtk/commit/?id=291f3e44 "291f3e4 channel-usbredir: Fix crash on channel-up" I started a scratch build with this commit reverted: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=15593734 Radek, can you give it a try once it completes? Hi, took sometime thinking on it but seems the revert is indeed the best. The patch in question fixes Bug 1399838 but it is far more easy to revert and fix that bug in a different way instead of trying to keep migration working with that patch in. Revert sent upstream [0] and simple proposal to fix crash from Bug 1399838 sent as well [1] [0] https://lists.freedesktop.org/archives/spice-devel/2018-April/042965.html [1] https://lists.freedesktop.org/archives/spice-devel/2018-April/042966.html For 7.6 it should be solved by rebase as it includes the proposed patches from Comment #10 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-2018:3175 |
Created attachment 1409868 [details] spice debug log during migration Description of problem: Guest VM is unresponsive after migration Version-Release number of selected component (if applicable): client (rhel7.5) spice-gtk3-0.34-3.el7.x86_64 virt-viewer-5.0-10.el7.x86_64 host (rhel7.5): qemu-kvm-rhev-2.9.0-16.el7_4.15.x86_64 spice-server-0.14.0-2.el7.x86_64 guest (rhel7.5 (rhel6.9 also reproducible as well)) kernel-3.10.0-861.el7.x86_64 using rhv 4.2.2.4-0.1.el7 How reproducible: always Steps to Reproduce: 1.run rhel VM in rhv4.2 2.connect to it with remote-viewer 3.migrate 4. after migration interact with guest using mouse/keyboard Actual results: * Vm guest becomes unresponsive through remote-viewer * remote-viewer is killed by SIGSEGV when user attempts to close it (backtrace attached) Expected results: After migration VM guest is responding to user's input through remote-viewer Additional info: