Bug 1400589

Summary:	kernel cores do not boot up
Product:	[Fedora] Fedora	Reporter:	LaKing <LaKing>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED NOTABUG	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	25	CC:	cz172638, gansalmon, ichavero, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-12-02 09:00:25 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:

Description LaKing 2016-12-01 14:46:06 UTC

Description of problem:
At boot on fedora 25, two cores are missing. The machine is a dual-xeon computer, and the CPU's are 32 bit Hyper-treading technology cores.

do_boot_cpu failed(-1) to wakeup CPU#1
do_boot_cpu failed(-1) to wakeup CPU#3

from lscpu
On-line CPU(s) list:   0,2
Off-line CPU(s) list:  1,3

Version-Release number of selected component (if applicable):

Fedora 25

How reproducible: always, on certain hardware

Steps to Reproduce:
1.Boot a computer with kernel 4.8.6-300.fc25, and a 32 bit Xeon processor.


Actual results:
2 cores missing

when booting kernel 4.2.3-300.fc23 the CPUs show up fine.

Comment 1 LaKing 2016-12-02 09:00:25 UTC

Okay sorry, this might be old hardware failing, is it started to produce these side effects randomly.