Bug 1657539
| Summary: | Recent Fedora kernels will not boot XEN (4.19.6-300.fc29.x86_64 does not boot XEN) | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Lloyd Kvam <redhat> | ||||
| Component: | kernel | Assignee: | Peter Jones <pjones> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 29 | CC: | airlied, bskeggs, bugzilla-redhat, d_ruetti, ewk, hdegoede, ichavero, itamar, jarodwilson, jforbes, jglisse, john.j5live, jonathan, josef, kernel-maint, linville, lkundrak, m.a.young, mchehab, mike, mjg59, pjones, redhat, steved, wgo | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2019-01-18 12:39:19 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: | |||||||
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Description
Lloyd Kvam
2018-12-09 19:57:35 UTC
Are you sure this is a grub issue? There is a known bug in the kernel when booting xen (Dom0 or PV DomU) from 4.19.5 onwards. There is a proposed patch (see https://lore.kernel.org/lkml/20181130202328.65359-2-kirill.shutemov@linux.intel.com/ and https://lists.xenproject.org/archives/html/xen-devel/2018-11/msg03313.html ) but it hasn't made it into the main line kernels yet. (In reply to Michael Young from comment #1) > Are you sure this is a grub issue? There is a known bug in the kernel when > booting xen (Dom0 or PV DomU) from 4.19.5 onwards. There is a proposed patch > (see > https://lore.kernel.org/lkml/20181130202328.65359-2-kirill.shutemov@linux. > intel.com/ and > https://lists.xenproject.org/archives/html/xen-devel/2018-11/msg03313.html ) > but it hasn't made it into the main line kernels yet. You are correct. I changed it to kernel. I was having difficulty with the user interface when I filed the bug. Thanks for the links. (In reply to Michael Young from comment #1) > Are you sure this is a grub issue? There is a known bug in the kernel when > booting xen (Dom0 or PV DomU) from 4.19.5 onwards. There is a proposed patch > (see > https://lore.kernel.org/lkml/20181130202328.65359-2-kirill.shutemov@linux. > intel.com/ and > https://lists.xenproject.org/archives/html/xen-devel/2018-11/msg03313.html ) > but it hasn't made it into the main line kernels yet. For me, in a *DomU*, Fedora kernels from 4.19.5 onwards crash at boot, while 4.19.5 (and up) built from upstream sources boot the same VM just fine. Therfore I'm not sure if this is really an upstream issue. To me it seems rather Fedora-specific. Created attachment 1514334 [details]
DomU console output of crashing Fedora kernels 4.19.8 and 4.19.5
The issue still exists in kernels 4.19.10-300 and current 4.19.13-300 (In reply to d_ruetti from comment #5) > The issue still exists in kernels 4.19.10-300 and current 4.19.13-300 Yes, the patch hasn't made it into the upstream 4.19 kernel branch yet. It is in the 4.20 branch so it should work after the F29 rebase to 4.20 which should happen in the next couple of weeks (and a bit longer for F28). There is now a kernel-4.20.1-200.fc29 build available in koji https://koji.fedoraproject.org/koji/buildinfo?buildID=1178656 which fixes the problem for me under early testing. I still expect it will be a week or so before it (or a later build) reaches the main repositories. The kernel from comment #7 seems to work. Thank you, Michael! The native 4.19.15-300 kernel boots again normally. The patch was recently ported to the upstream 4.19 kernel branch. Thanks for verifying. |