Re: kern/44652: 'gpt destroy' panics

[Christoph Egger <Christoph_Egger%gmx.de@localhost>]

The following reply was made to PR kern/44652; it has been noted by GNATS.

From: Christoph Egger <Christoph_Egger%gmx.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, 
 netbsd-bugs%netbsd.org@localhost, Hauke Fath <hf%spg.tu-darmstadt.de@localhost>
Subject: Re: kern/44652: 'gpt destroy' panics
Date: Thu, 03 Mar 2011 07:56:20 +0100

 On 02.03.11 12:15, Christoph Egger wrote:
 > The following reply was made to PR kern/44652; it has been noted by GNATS.
 > 
 > From: Christoph Egger <Christoph_Egger%gmx.de@localhost>
 > To: gnats-bugs%NetBSD.org@localhost
 > Cc: Hauke Fath <hf%spg.tu-darmstadt.de@localhost>, 
 > kern-bug-people%netbsd.org@localhost, 
 >  gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
 > Subject: Re: kern/44652: 'gpt destroy' panics
 > Date: Wed, 02 Mar 2011 12:07:32 +0100
 > 
 >  On 03/02/11 11:45, Hauke Fath wrote:
 >  > The following reply was made to PR kern/44652; it has been noted by GNATS.
 >  >
 >  > From: Hauke Fath<hf%spg.tu-darmstadt.de@localhost>
 >  > To: gnats-bugs%NetBSD.org@localhost
 >  > Cc: kern-bug-people%NetBSD.org@localhost
 >  > Subject: Re: kern/44652: 'gpt destroy' panics
 >  > Date: Wed, 2 Mar 2011 11:41:57 +0100
 >  >
 >  >   At 10:00 Uhr +0000 01.03.2011, Hauke Fath wrote:
 >  >   >  I deconstructed wedges and gpts of the above installation in the 
 > right
 >  >   >  sequence, dd(1)ed the beginning of the disk, and ten seconds or so 
 > later
 >  >   >  was hit with
 >  >   >  
 > <http://la.causeuse.org/hauke/NetBSD/gpt-issues/gpt_destroy_raid_panic.jpg>.
 >  >
 >  >   And another one
 >  >
 >  >   <http://la.causeuse.org/hauke/NetBSD/gpt-issues/gpt_raidframe_panic.jpg>
 >  >
 >  >   which I got while deconstructing wedges and partitions out of order. As
 >  >   Christoph pointed out, another null pointer issue; not sc though, which 
 > is
 >  >   checked in the caller dkstrategy().
 >  
 >  This time the crash happens in sys/dev/dkwedge/dk.c, line 1200:
 >  
 >         nbp->b_dev = sc->sc_parent->dk_rawvp->v_rdev;
 >  
 >  dk_rawvp is NULL.
 
 Please update said file from cvs and retry.
 
 --------------------------------------------------
 Module Name:   src
 Committed By:  christos
 Date:          Thu Mar  3 03:39:08 UTC 2011
 
 Modified Files:
        src/sys/dev/dkwedge: dk.c
 
 Log Message:
 check rawvp before doing ioctl or strategy.
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.59 -r1.60 src/sys/dev/dkwedge/dk.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.
 --------------------------------------------------
 
 Christoph