From owner-freebsd-bugs  Mon May 27 15:00:09 1996
Return-Path: owner-bugs
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id PAA18097
          for bugs-outgoing; Mon, 27 May 1996 15:00:09 -0700 (PDT)
Received: (from gnats@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id PAA18036;
          Mon, 27 May 1996 15:00:03 -0700 (PDT)
Date: Mon, 27 May 1996 15:00:03 -0700 (PDT)
Message-Id: <199605272200.PAA18036@freefall.freebsd.org>
To: freebsd-bugs
Cc: 
From: Andrew Herdman <andrew@why.whine.com>
Subject: Re: kern/1252: problem with cd9660 driver
Reply-To: Andrew Herdman <andrew@why.whine.com>
Sender: owner-bugs@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

The following reply was made to PR kern/1252; it has been noted by GNATS.

From: Andrew Herdman <andrew@why.whine.com>
To: Joerg Wunsch <joerg_wunsch@uriah.heep.sax.de>
Cc: joerg_wunsch@uriah.heep.sax.de, FreeBSD-gnats-submit@FreeBSD.ORG
Subject: Re: kern/1252: problem with cd9660 driver
Date: Mon, 27 May 1996 17:49:36 -0400

 On Mon, 27 May 1996, J Wunsch wrote:
 
 > As Andrew Herdman wrote:
 > 
 > > > Where is it mounted?  From the SCSI, or the ATAPI CDROM?
 > 
 > > It happens with both SCSI and ATAPI devices.  The system I use at home is 
 > > SCSI and the one at work is ATAPI and they both give the same result, 
 > > which is !crash!
 > 
 > I'm afraid you will have to investigate more if you want this solved.
 > Nobody else except you complained about it, and i'm pretty sure there
 > are enough other people like me who regularly scan entire CDs.  So it
 > looks like it's only reproducible in your situation.
 > 
 > (Perhaps you can get a kernel core dump?  DDB output?)
 
 Ok i just did it and got a core and here is what gdb shows me:
 
 gdb -k kernel.1 vmcore.1
 GDB is free software and you are welcome to distribute copies of it
  under certain conditions; type "show copying" to see the conditions.
 There is absolutely no warranty for GDB; type "show warranty" for details.
 GDB 4.13 (i386-unknown-freebsd), 
 Copyright 1994 Free Software Foundation, Inc...(no debugging symbols 
 found)...
 IdlePTD 1df000
 current pcb at 1cbb18
 panic: vwakeup: neg numoutput
 #0  0xf017a547 in boot ()
 (kgdb) bt
 #0  0xf017a547 in boot ()
 #1  0xf0115236 in panic ()
 #2  0xf012cbab in vwakeup ()
 #3  0xf01297ee in biodone ()
 #4  0xf0154153 in cd_strategy ()
 #5  0xf0158dec in scsi_strategy ()
 #6  0xf01539b8 in cdstrategy ()
 #7  0xf0135d5a in spec_strategy ()
 #8  0xf01050a0 in cd9660_strategy ()
 #9  0xf012ac83 in cluster_read ()
 #10 0xf01046d5 in cd9660_read ()
 #11 0xf0131bd8 in vn_read ()
 #12 0xf01168a7 in read ()
 #13 0xf0180321 in syscall ()
 #14 0xf0177e15 in Xsyscall ()
 #15 0x6012 in ?? ()
 #16 0x6cb0 in ?? ()
 #17 0x1095 in ?? ()
 
 I'll also put the dumps for anon ftp from ghoul.uunet.ca in /pub/
 
 Andrew