Bug 181501

Summary:	unaligned accesses seen during mono execution
Product:	[Fedora] Fedora	Reporter:	Prarit Bhargava <prarit>
Component:	mono	Assignee:	Xavier Lamien <lxtnow>
Status:	CLOSED NEXTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	rawhide	CC:	paul
Target Milestone:	---
Target Release:	---
Hardware:	ia64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2008-03-05 21:07:58 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:
Bug Depends On:
Bug Blocks:	163350

Description Prarit Bhargava 2006-02-14 17:58:04 UTC

Description of problem:  When mono executes on an ia64 box, unaligned  
access errors are generated. 
 
 
Version-Release number of selected component (if applicable):  latest nightly 
build 
 
 
How reproducible:  AFAICT, whenever mono runs we see unaligned accesses 
 
 
Steps to Reproduce: 
1. Install latest nightly 
2. Let system sit and monitor console. 
   
Actual results: 
 
After leaving a system running overnight, 
 
thetango.boston.redhat.com login: mono(28216): unaligned access to 
0x2000000001408071, ip=0x400000000014cea0 
mono(28216): unaligned access to 0x2000000001408075, ip=0x400000000014cee0 
mono(28216): unaligned access to 0x2000000001408079, ip=0x400000000014cea0 
mono(28216): unaligned access to 0x200000000140807d, ip=0x400000000014cee0 
mono(9297): unaligned access to 0x2000000001408071, ip=0x400000000014cea0 
mono(9297): unaligned access to 0x2000000001408075, ip=0x400000000014cee0 
mono(9297): unaligned access to 0x2000000001408079, ip=0x400000000014cea0 
mono(9297): unaligned access to 0x200000000140807d, ip=0x400000000014cee0 
mono(16216): unaligned access to 0x2000000001408071, ip=0x400000000014cea0 
mono(16216): unaligned access to 0x2000000001408075, ip=0x400000000014cee0 
mono(16216): unaligned access to 0x2000000001408079, ip=0x400000000014cea0 
mono(16216): unaligned access to 0x200000000140807d, ip=0x400000000014cee0 
mono(23070): unaligned access to 0x2000000001408071, ip=0x400000000014cea0 
mono(23070): unaligned access to 0x2000000001408075, ip=0x400000000014cee0 
mono(23070): unaligned access to 0x2000000001408079, ip=0x400000000014cea0 
mono(23070): unaligned access to 0x200000000140807d, ip=0x400000000014cee0 
mono(23711): unaligned access to 0x2000000001408071, ip=0x400000000014cea0 
mono(23711): unaligned access to 0x2000000001408075, ip=0x400000000014cee0 
mono(23711): unaligned access to 0x2000000001408079, ip=0x400000000014cea0 
mono(23711): unaligned access to 0x200000000140807d, ip=0x400000000014cee0 
mono(30609): unaligned access to 0x2000000001408071, ip=0x400000000014cea0 
mono(30609): unaligned access to 0x2000000001408075, ip=0x400000000014cee0 
mono(30609): unaligned access to 0x2000000001408079, ip=0x400000000014cea0 
mono(30609): unaligned access to 0x200000000140807d, ip=0x400000000014cee0 
 
 
Expected results: 
 
mono should not make unaligned accesses on ia64.  No warnings should be seen. 
 
Additional info:  I cannot get this to occur by running mono by hand. :(

Comment 1 Alexander Larsson 2006-02-17 14:39:50 UTC

If you get it during the night, then it probably happens in
/usr/libexec/beagle-crawl-system which is run in a cronjob. You could run that
manually to verify this.

Comment 2 Prarit Bhargava 2006-02-23 18:40:43 UTC

Hi Alexander, 
 
That seems to be causing the problem.  Executing beagle-crawl-system seems 
to cause the unaligned access messages.  I tried gdb'ing a prctl of 
beagle-crawl-system but wasn't able to get a good trace ...

Comment 3 Doug Chapman 2008-03-05 21:07:58 UTC

I have not seen this in the pre-F9 rawhide so closing it.  We will re-open and
provide some triage if we see it again.