NetBSD Problem Report #44746

From www@NetBSD.org  Sun Mar 20 00:47:59 2011
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Message-Id: <20110319211022.7861D63BAC2@www.NetBSD.org>
Date: Sat, 19 Mar 2011 21:10:22 +0000 (UTC)
From: bbartlomiej@gmail.com
Reply-To: bbartlomiej@gmail.com
To: gnats-bugs@NetBSD.org
Subject: NetBSD 5.99.48 DomU crashes on using fdisk. (Xen 4, linux 2.6.32 Dom0 with pvops)
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>Number:         44746
>Category:       port-xen
>Synopsis:       NetBSD 5.99.48 DomU crashes on using fdisk. (Xen 4, linux 2.6.32 Dom0 with pvops)
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-xen-maintainer
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Mar 20 00:50:00 +0000 2011
>Closed-Date:    Sat Apr 11 17:56:12 +0000 2020
>Last-Modified:  Sat Apr 11 17:56:12 +0000 2020
>Originator:     Bartek Krawczyk
>Release:        5.99.48
>Organization:
>Environment:
NetBSD netbsd 5.99.48 NetBSD 5.99.48 (XEN3PAE_DOMU) #0: Thu Mar 17 18:03:10 UTC 2011  builds@b7.netbsd.org:/home/builds/ab/HEAD/i386/201103171400Z-obj/home/builds/ab/HEAD/src/sys/arch/i386/compile/XEN3PAE_DOMU i386

>Description:
I have just installed NetBSD 5.99.48 DomU (due to network copy mode on Xen 4 Dom0) using loopback files. "/" is on /dev/xbd1a and I have added xbd0 to make swap partition on in. When I want to use fdisk on any of this disks i get this results:

netbsd# fdisk /dev/xbd0d
fdisk: primary partition table invalid, no magic in sector 0
fdisk: Cannot determine the number of heads
Disk: /dev/xbd0d
NetBSD disklabel disk geometry:
cylinders: 256, heads: 1, sectors/track: 2048 (2048 sectors/cylinder)
total sectors: 524288

BIOS disk geometry:
cylinders: 32, heads: 255, sectors/track: 63 (16065 sectors/cylinder)
total sectors: 524288

Partitions aligned to 16065 sector boundaries, offset 63

Partition table:
0: <UNUSED>
1: <UNUSED>
2: <UNUSED>
3: <UNUSED>
Bootselector disabled.
No active partition.
panic: kernel diagnostic assertion "rw_lock_held(&wl->wl_rwlock)" failed: file "/home/builds/ab/HEAD/src/sys/kern/vfs_wapbl.c", line 1628
cpu0: Begin traceback...
?(0,0,0,100400,1,4000,4000,8e08,0,cad20000) at 0xc0b89800
cpu0: End traceback...

dump to dev 142,9 not possible
rebooting...


On Dom0 xm dmesg shows:
(XEN) traps.c:2308:d9 Domain attempted WRMSR 00000277 from 00000501:00070406 to 00070106:00070106.

NetBSD DomU dmesg shows during boot:
xbd0 at xenbus0 id 51713: Xen Virtual Block Device Interface
xbd0: using event channel 5
xbd0: 256 MB, 512 bytes/sect x 524288 sectors

Or should I maybe create a disklabel directly without a DOS partition table?

Regards,

>How-To-Repeat:

>Fix:

>Release-Note:

>Audit-Trail:
From: Manuel Bouyer <bouyer@antioche.eu.org>
To: gnats-bugs@NetBSD.org
Cc: port-xen-maintainer@NetBSD.org, gnats-admin@NetBSD.org,
        netbsd-bugs@NetBSD.org
Subject: Re: port-xen/44746: NetBSD 5.99.48 DomU crashes on using fdisk.
 (Xen 4, linux 2.6.32 Dom0 with pvops)
Date: Tue, 3 May 2011 17:24:49 +0200

 On Sun, Mar 20, 2011 at 12:50:01AM +0000, bbartlomiej@gmail.com wrote:
 > >Description:
 > I have just installed NetBSD 5.99.48 DomU (due to network copy mode on Xen 4 Dom0) using loopback files. "/" is on /dev/xbd1a and I have added xbd0 to make swap partition on in. When I want to use fdisk on any of this disks i get this results:
 > 
 > netbsd# fdisk /dev/xbd0d
 > fdisk: primary partition table invalid, no magic in sector 0
 > fdisk: Cannot determine the number of heads
 > Disk: /dev/xbd0d
 > NetBSD disklabel disk geometry:
 > cylinders: 256, heads: 1, sectors/track: 2048 (2048 sectors/cylinder)
 > total sectors: 524288
 > 
 > BIOS disk geometry:
 > cylinders: 32, heads: 255, sectors/track: 63 (16065 sectors/cylinder)
 > total sectors: 524288
 > 
 > Partitions aligned to 16065 sector boundaries, offset 63
 > 
 > Partition table:
 > 0: <UNUSED>
 > 1: <UNUSED>
 > 2: <UNUSED>
 > 3: <UNUSED>
 > Bootselector disabled.
 > No active partition.
 > panic: kernel diagnostic assertion "rw_lock_held(&wl->wl_rwlock)" failed: file "/home/builds/ab/HEAD/src/sys/kern/vfs_wapbl.c", line 1628
 > cpu0: Begin traceback...
 > ?(0,0,0,100400,1,4000,4000,8e08,0,cad20000) at 0xc0b89800
 > cpu0: End traceback...

 Hello,
 can you try again with an up to date -current kernel ? there have been
 fixes in the WAPBL area ...

 -- 
 Manuel Bouyer <bouyer@antioche.eu.org>
      NetBSD: 26 ans d'experience feront toujours la difference
 --

State-Changed-From-To: open->feedback
State-Changed-By: jdolecek@NetBSD.org
State-Changed-When: Sat, 23 Jun 2018 18:29:38 +0000
State-Changed-Why:
Can you try with -current kernel (8.99.x) ? There have been WAPBL fixes
since 2011 which might have fixed this.


State-Changed-From-To: feedback->closed
State-Changed-By: jdolecek@NetBSD.org
State-Changed-When: Sat, 11 Apr 2020 17:56:12 +0000
State-Changed-Why:
Doesn't seem to happen any more, tested with up-to-date kernel with
log-enabled xbd0


>Unformatted:

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