| Summary: | [PV Xen guest] hit kernel BUG on restore with multiple VCPUs in guest. | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Igor Mammedov <imammedo> |
| Component: | kernel | Assignee: | Justin M. Forbes <jforbes> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 15 | CC: | gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, xen-maint |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2012-07-11 17:53:01 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
|
Description
Igor Mammedov
2011-04-15 17:43:59 UTC
>on intel based server we only get:
> WARNING: at arch/x86/kernel/microcode_core.c:454
>without hitting this BUGON in microcode_amd.c:138
mean microcode_intel.c:309 (i.e. similar BUGON)
After some testing: Fc13 has the same BUG. RHEL6.0 ins't affected by the BUG, this guest only get WARNING and VCPUs are assigned to different CPUs. This BUG_ON is hit only when we have microcode module loaded with valid microcode blob on the system. It affect both AMD and Intel since their apply_microcode has similar BUG_ON (cpu != raw_smp_processor_id()). This can be fixed by a long proposed patch, that somehow hasn't made its way into upstream http://marc.info/?l=linux-kernel&m=126105863415715&w=2 Patch also could be found in BZ671161. assigning to justin for integration This should be fixed as far as I know. Justin? Fedora 15 has reached it's end of life as of June 26, 2012. As a result, we will not be fixing any remaining bugs found in Fedora 15. In the event that you have upgraded to a newer release and the bug you reported is still present, please reopen the bug and set the version field to the newest release you have encountered the issue with. Before doing so, please ensure you are testing the latest kernel update in that release and attach any new and relevant information you may have gathered. Thank you for taking the time to file a report. We hope newer versions of Fedora suit your needs. |