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Message-Id: <200710162035.l9GKZiWU022839@www.freebsd.org>
Date: Tue, 16 Oct 2007 20:35:44 GMT
From: Oles Hnatkevych <don_oles@able.com.ua>
To: freebsd-gnats-submit@FreeBSD.org
Subject: kgdb: cannot read PTD
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>Number:         117256
>Category:       bin
>Synopsis:       kgdb(1) cannot read PTD
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Oct 16 20:40:01 UTC 2007
>Closed-Date:    Wed Oct 12 15:05:21 UTC 2011
>Last-Modified:  Wed Oct 12 15:05:21 UTC 2011
>Originator:     Oles Hnatkevych
>Release:        6.2-STABLE
>Organization:
>Environment:
FreeBSD murzik.oles.net 6.2-STABLE FreeBSD 6.2-STABLE #2: Mon Oct 15 16:10:24 EEST 2007     root@murzik.oles.net:/usr/src/sys/i386/compile/MURZIK  i386

>Description:
I have box crashing when using fusefs ntfs module. But the problem is
that kgdb can not read coredump:

murzik:root# kgdb kernel.debug /var/crash/vmcore.0
kgdb: cannot read PTD

murzik:root# more info.0
Dump header from device /dev/ad0s1b
  Architecture: i386
  Architecture Version: 2
  Dump Length: 1610158080B (1535 MB)
  Blocksize: 512
  Dumptime: Tue Oct 16 23:08:55 2007
  Hostname: murzik.oles.net
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 6.2-STABLE #2: Mon Oct 15 16:10:24 EEST 2007
    root@murzik.oles.net:/usr/src/sys/i386/compile/MURZIK
  Panic String: page fault
  Dump Parity: 626449165
  Bounds: 0
  Dump Status: good
murzik:root# file vmcore.0
vmcore.0: ELF 32-bit LSB core file Intel 80386, invalid version (embedded)

If we can not debug the kernel we can not fix crash bugs!

>How-To-Repeat:
mount_ntfs-3g /dev/da0s1 /mnt
cd /mnt
mv some-file /root/

>Fix:


>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->feedback 
State-Changed-By: jh 
State-Changed-When: Sat Sep 24 07:19:29 UTC 2011 
State-Changed-Why:  
Is this still a problem for you? 

http://www.freebsd.org/cgi/query-pr.cgi?pr=117256 
State-Changed-From-To: feedback->closed 
State-Changed-By: remko 
State-Changed-When: Wed Oct 12 15:05:19 UTC 2011 
State-Changed-Why:  
Feedback timeout 

http://www.freebsd.org/cgi/query-pr.cgi?pr=117256 
>Unformatted:
