Subject: kern/4111: vnd device crashes system
To: None <>
From: Lennart Augustsson <>
List: netbsd-bugs
Date: 09/14/1997 04:08:00
>Number:         4111
>Category:       kern
>Synopsis:       vnd device crashes system
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people (Kernel Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Sep 13 19:20:01 1997
>Originator:     Lennart Augustsson
Department of Computing Science, Chalmers University
>Release:        NetBSD-current 970912
System: NetBSD calvin 1.2G NetBSD 1.2G (CALVIN) #173: Sun Sep 14 03:34:31 CEST 1997 augustss@calvin:/users/NetBSD/src/sys/arch/i386/compile/CALVIN i386

	Accessing the vnd device can crash the system.
	dd if=/dev/zero of=ramdisk-12G.fs count=2880
	vnconfig -t floppy3 -v -c /dev/vnd0d ramdisk-12G.fs
	disklabel -rw /dev/vnd0d floppy3
	od /dev/vnd0d | head

	The system crashes with the message:
	Stopped at syscall1+0x5c:
	(that's all I get since the debugger is broken).