Re: reiserfs one user DoS?

[Erik Tews]

On Sun, Oct 05, 2003 at 06:09:24PM +0200, Christian Kujau wrote:
> Hans Reiser schrieb:
> >>I have found such strange thing:
> >>
> >>pseudo@avalon at 14:04:00  ~> dd if=/dev/zero of=file bs=1 count=0 
> >>seek=1000000000000
> >>
> >>After that my Intel Celeron 800 MHz/384M RAM 60G/Seagate U6 under
> >>Linux-2.4.22-grsec on reiserfs was utilized 100% for more than 2 hours.
> >>dd process can't be killed.
> >>
> >>Is this my flow or real bug?
> >>
> >it is fixed in reiser4.  linux has a lot of DOS vulerabilities to logged 
> >in users, mostly due to the ability to consume all of some resource or 
> >another.  forgive me for not discussing them publicly.;-)
> 
> perhaps "ulimit" could help here.

Really? If I got a process which is unkillable, how can the kernel kill
this process if it runs out of cpu-time?
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