kern/63720: System hangs when trying to create non-existing devices
with ifconfig
Gregor Surmann
admin at sinuspl.net
Wed Mar 3 14:50:13 PST 2004
>Number: 63720
>Category: kern
>Synopsis: System hangs when trying to create non-existing devices with ifconfig
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Mar 03 14:50:12 PST 2004
>Closed-Date:
>Last-Modified:
>Originator: Gregor Surmann
>Release: FreeBSD 5.2.1-RELEASE-p1 i386
>Organization:
>Environment:
System: FreeBSD router.sinuspl.net 5.2.1-RELEASE-p1 FreeBSD 5.2.1-RELEASE-p1 #3: Wed Mar 3 22:56:59 CET 2004 root at router.sinuspl.net:/usr/src/sys/i386/compile/ROUTER i386
Machine is a normal PC, with intel mainboard and P3 CPU. Running very stable. No other errors or so.
Standard kernel config, only some old ISA cards removes and "device stf" appended.
>Description:
I wanted to use 6to4, so I've created a device stf0 with command "ifconfig stf0 create". Then... as I was bored, i though "let create device staff0". So, typed "ifconfig staff0 create". The system hangs. Nothing in logs, only reset possible. Then, after reboot, i tried to create gjiogjisdjgio device with "ifconfig gjiogjisdjgio create". Again, a hang.
>How-To-Repeat:
Type "ifconfig asshole0 create" or so...
>Fix:
Don't know how to fix, maybe first parse the device name and check it before doing anything?
>Release-Note:
>Audit-Trail:
>Unformatted:
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