Bug 99011 – Full backup of root directory using 'tar' causes system reboot

Bug 99011 - Full backup of root directory using 'tar' causes system reboot

Summary:	Full backup of root directory using 'tar' causes system reboot

Status:	CLOSED NOTABUG

Aliases:	None

Product:	Red Hat Enterprise Linux 2.1
Classification:	Red Hat
Component:	tar (Show other bugs)
Sub Component:
Version:	2.1
Hardware:	ia64 Linux

Priority	medium Severity high
Target Milestone:	---
Target Release:	---
Assigned To:	Jeff Johnson
QA Contact:	Ben Levenson
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2003-07-11 13:36 EDT by dnd
Modified:	2007-11-30 17:06 EST (History)
CC List:	0 users

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2003-07-11 16:37:06 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description dnd 2003-07-11 13:36:46 EDT

From Bugzilla Helper:
User-Agent: Mozilla/4.75 [en] (WinNT; U)

Description of problem:
ia64/IPF (rx2600) system reboots during execution of "tar cvf fullbackup.tar /" command. The culprit is /proc filesystem. If the tar 
command excludes the /proc filesystem, the tar command is successful without a system reboot. 

It turns out the the problem is the ia-64 memory space with its embedded I/O memory and holes.  If you read one of these invalid 
memory locations you will MCA.  For example, just wc /proc/kcore you will generate an MCA and reboot. 




Version-Release number of selected component (if applicable):
tar-1.13.25-4.AS21.0

How reproducible:
Always

Steps to Reproduce:
1. Execute "tar cvf fullbackup.tar /" 
2. System would reboot during the backup of /proc filesystem.
3.
    

Actual Results:  Automatic System Reboot

Expected Results:  System should NOT automatically reboot during backup of /proc filesystem.

Additional info

Comment 1 dnd 2003-07-11 13:41:51 EDT

[root@netuxipf root]# cat /etc/redhat-release
Red Hat Linux Advanced Server release 2.1AS (Derry)

[root@netuxipf root]# uname -a
Linux netuxipf 2.4.18-e.31smp #1 SMP Wed May 21 17:47:59 EDT 
2003 ia64 unknown

Comment 2 Bill Nottingham 2003-07-11 16:37:06 EDT

Reading of memory holes and other I/O space is expected to MCA.

Note You need to log in before you can comment on or make changes to this bug.