NetBSD Problem Report #37402

From andreas@whome.planix.com  Sun Nov 18 16:59:02 2007
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Date: Sun, 18 Nov 2007 10:58:25 -0500 (EST)
From: Andreas Wrede <andreas@planix.com>
Sender: "Andreas Wrede" <andreas@whome.planix.com>
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To: gnats-bugs@NetBSD.org
Subject: [4.0] fstat file descriptor info broken
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>Number:         37402
>Category:       kern
>Synopsis:       fstat return bogus file descriptor info
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Nov 18 17:00:00 +0000 2007
>Last-Modified:  Mon Nov 19 03:45:00 +0000 2007
>Originator:     Andreas Wrede
>Release:        NetBSD 4.0_RC4
>Organization:
Andreas Wrede              Planix, Inc.
andreas@planix.com         Networking, System Administration, Consulting
http://www.planix.com      Toronto, Ontario, Canada

"The steady state of disks is full."
                               -- Ken Thompson
>Environment:


System: NetBSD whome.planix.com 4.0_RC4 NetBSD 4.0_RC4 (PLANIX.MPACPI) #329: Fri Nov 16 07:09:00 EST 2007 root@whome.planix.com:/u2/netbsd-4.0/obj.i386/sys/arch/i386/compile/PLANIX.MPACPI i386

Architecture: i386
Machine: i386

>Description:
fstat prints garbage for file descriptors. The break occurs somewhere between Map 27, 2007 (BETA2)  and Oct 15, 2007 (RC2).  

>How-To-Repeat:
$ ps -axp $$
 PID TTY   STAT    TIME COMMAND
1431 ttyp0 Ss   0:00.02 -ksh 
$ fstat -p $$
USER     CMD          PID   FD MOUNT       INUM MODE         SZ|DV R/W
andreas  ksh         1431   wd -         -   ?(c20a4cd    -
andreas  ksh         1431    6 -         -        none    -
andreas  ksh         1431    7 -         -        none    -
andreas  ksh         1431    8 -         -        none    -	

>Fix:
unknown

>Audit-Trail:
From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: kern/37402: [4.0] fstat file descriptor info broken
Date: Mon, 19 Nov 2007 01:31:43 +0100

 I can not reproduce it on 4.0RC1/i386 or 4.0RC3/sparc64

 Martin

From: Andreas Wrede <andreas@planix.com>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org
Subject: Re: kern/37402: [4.0] fstat file descriptor info broken
Date: Sun, 18 Nov 2007 22:43:03 -0500

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 On Nov 18, 2007, at 19:35 , Martin Husemann wrote:

 > The following reply was made to PR kern/37402; it has been noted by  
 > GNATS.
 >
 > From: Martin Husemann <martin@duskware.de>
 > To: gnats-bugs@NetBSD.org
 > Cc:
 > Subject: Re: kern/37402: [4.0] fstat file descriptor info broken
 > Date: Mon, 19 Nov 2007 01:31:43 +0100
 >
 > I can not reproduce it on 4.0RC1/i386 or 4.0RC3/sparc64

 After trimming down the differences between GENERIC.MP and my kernel,  
 I found that setting LOCKDEBUG causes the problem.

 -- 
      aew


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>Unformatted:

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