Subject: Re: hard hang through qdisc

From: jamal <[email-masked]>
Date: Thu, 31 Jan 2008 07:34:01 -0500

On Thu, 2008-31-01 at 13:21 +0100, Andi Kleen wrote:
> 
> I just managed to hang a 2.6.24 (+ some non network patches) kernel 
> with the following (non sensical) command
> 
> tc qdisc add dev eth0 root tbf rate 1000 burst 10 limit 100
> 
> No oops or anything just hangs. While I understand root can
> do bad things just hanging like this seems a little extreme.
> 

---------
lilsol:~# tc qdisc add dev eth0 root tbf rate 1000 burst 10 limit 100
lilsol:~# uname -a
Linux lilsol 2.6.24 #1 PREEMPT Sun Jan 27 09:22:00 EST 2008 i686
GNU/Linux
lilsol:~# tc qdisc ls dev eth0
qdisc tbf 8001: root rate 1000bit burst 10b lat 737.3ms
lilsol:~#
-------

What do your patches do?

cheers,
jamal