Bug 553153

Summary:	Cannot enter into S3/S4 due to khungtaskd cannot be stopped
Product:	Red Hat Enterprise Linux 5	Reporter:	Yolkfull Chow <yzhou>
Component:	kernel	Assignee:	John Feeney <jfeeney>
Status:	CLOSED DUPLICATE	QA Contact:	Red Hat Kernel QE team <kernel-qe>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	5.5	CC:	jwilson
Target Milestone:	rc	Keywords:	Regression
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-02-02 15:45:16 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Yolkfull Chow 2010-01-07 09:21:03 UTC

Description of problem:
S3/S4 will failed due to following error messages found in dmesg:

---
Enabling non-boot CPUs ...
SMP alternatives: switching to SMP code
Booting processor 1/2 APIC 0x1
Initializing CPU#1
Calibrating delay using timer specific routine.. 5984.26 BogoMIPS (lpj=2992132)
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 6144K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 1
Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz stepping 0a
kvm: enabling virtualization on CPU1
CPU1 is up
Disabling non-boot CPUs ...
kvm: disabling virtualization on CPU1
CPU 1 is now offline
SMP alternatives: switching to UP code
CPU1 is down
Stopping tasks: ================================================================================================================================================
 stopping tasks timed out after 120 seconds (1 tasks remaining):
  khungtaskd
Restarting tasks...<6> Strange, khungtaskd not stopped
 done
Enabling non-boot CPUs ...
SMP alternatives: switching to SMP code
Booting processor 1/2 APIC 0x1
Initializing CPU#1
Calibrating delay using timer specific routine.. 5984.14 BogoMIPS (lpj=2992071)
CPU: L1 I cache: 32K, L1 D cache: 32K
CPU: L2 cache: 6144K
CPU: Physical Processor ID: 0
CPU: Processor Core ID: 1
Intel(R) Core(TM)2 Duo CPU     E8400  @ 3.00GHz stepping 0a
kvm: enabling virtualization on CPU1
CPU1 is up
---

Should be REGRESSION since cannot reproduce this on 2.6.18-162.el5.

Version-Release number of selected component (if applicable):
2.6.18-183.el5

How reproducible:
Everytime

Steps to Reproduce:
1. echo mem > /sys/power/state (or echo disk > /sys/power/state )
2.
3.
  
Actual results:
S3/S4 failed

Expected results:
should be able to enter into S3/S4

Additional info:

Comment 1 Matthew Garrett 2010-02-02 15:45:16 UTC


*** This bug has been marked as a duplicate of bug 550014 ***