Bug 1859590
| Summary: | [efi]RT kernel crash with "rcu: INFO: rcu_preempt detected stalls on CPUs/tasks" | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Pei Zhang <pezhang> |
| Component: | kernel-rt | Assignee: | Luiz Capitulino <lcapitulino> |
| kernel-rt sub component: | Other | QA Contact: | Pei Zhang <pezhang> |
| Status: | CLOSED ERRATA | Docs Contact: | |
| Severity: | high | ||
| Priority: | high | CC: | bhu, chayang, daolivei, jinzhao, jlelli, juzhang, kcarcia, lcapitulino, mtosatti, nilal, peterx, williams, xiawu |
| Version: | 8.3 | Keywords: | TestOnly |
| Target Milestone: | rc | Flags: | pm-rhel:
mirror+
|
| Target Release: | 8.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | 4.18.0-230 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-11-04 02:26:35 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: | 1684462, 1859857 | ||
| Bug Blocks: | 1817732, 1823810 | ||
|
Description
Pei Zhang
2020-07-22 14:20:12 UTC
With the reproduced server hpe-dl380gen10-01.hpe2.lab.eng.bos.redhat.com, Hyper Threading is enabled. Hi Pei, could you append or point to a full console output? Thanks! Pei, More questions: o Do you have any VMs running at all? Or the real-time host profile applied? o How similar is this to bug 1817045 ? o Since your system is a skylake, make sure you have microcode version 0x2000064 (In reply to Luiz Capitulino from comment #3) > Pei, > > More questions: > > o Do you have any VMs running at all? Or the real-time host profile applied? Luiz, No, just installing a RT host will cause this issue. No VMs is running, no real-time host profile applied. > > o How similar is this to bug 1817045 ? They are different. There is no VM with this bug. > > o Since your system is a skylake, make sure you have microcode version > 0x2000064 Currently this system is installing 8.2-rt. The microcode: [root@hpe-dl380gen10-01 ~]# dmesg | grep microcode [ 0.000000] microcode: microcode updated early to revision 0x2006906, date = 2020-04-24 [ 11.127493] microcode: sig=0x50654, pf=0x80, revision=0x2006906 [ 11.131307] microcode: Microcode Update Driver: v2.2. Best regards, Pei *** Bug 1859857 has been marked as a duplicate of this bug. *** Since this is fixed by bug 1859857 and bug 1684462, I'm making this a TestOnly BZ and added both bugs as dependencies. Verified with 4.18.0-233.rt7.45.el8.x86_64: RT host works very well on UEFI server, the hang issue cannot be reproduced any more. 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: kernel-rt security and bug fix 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-2020:4609 |