ports/57465: kldunload rtc.ko causes a panic; yet it's in rc.d script

[Jan Srzednicki]

>Number:         57465
>Category:       ports
>Synopsis:       kldunload rtc.ko causes a panic; yet it's in rc.d script
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Oct 01 09:50:17 PDT 2003
>Closed-Date:
>Last-Modified:
>Originator:     Jan Srzednicki
>Release:        FreeBSD 5.1-RELEASE-p2 i386
>Organization:
>Environment:

System: FreeBSD mizantrop 5.1-RELEASE-p2 FreeBSD 5.1-RELEASE-p2 #1: Mon Sep  1 19:57:29 CEST 2003     root at mizantrop:/usr/obj/usr/src/sys/MIZERIA  i386

	
>Description:

ports/emulators/rtc is a real time clock port, which is used by vmware
(and instaled as a dependency for a emulators/vmware3 port).

Along with the module, there comes a rc.d script, namely rtc.sh. It
loads the module on start and unloads it on stop.

The module however, is somewhat broken. After using vmware and
"kldunload rtc.ko" I get a panic. Well, I know kldunloading modules is
always tricky and I should not play with this when I don't have to, but
this kldunload is enabled by default via the port!

The rtc.ko also causes a panic after a reboot when it wasn't
kldunloaded, but this panic is not so severe, as the buffers are flushed
first and the filesystems are synced.

	
>How-To-Repeat:

Install ports/emulators/rtc and ports/emulators/vmware3.

Configure a vmware guest system, turn it on, play with it, then turn off.

Reboot the system.

	
>Fix:

First of all, remove the kldunload thing from rc.d script
(ports/emulators/rtc/files/rtc.sh).

VMware says that rtc.ko is only needed for some windows stuff. As the
port is broken (at least on 5.1-R) and not so-needed, maybe it would be
better to remove the dependency (or make it an option, with a warning).

The best fix would be fixing the module itself, of course. ;)

	


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