From: erik@debian.franken.de (Erik Tews)
To: Christian Kujau <evil@g-house.de>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: reiserfs one user DoS?
Date: Mon, 6 Oct 2003 01:51:49 +0200 [thread overview]
Message-ID: <20031005235149.GA3993@debian.franken.de> (raw)
In-Reply-To: <3F804234.9070606@g-house.de>
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?
next prev parent reply other threads:[~2003-10-06 0:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-04 12:06 reiserfs one user DoS? Max A. Krasilnikov
2003-10-04 16:08 ` Hans Reiser
2003-10-05 16:09 ` Christian Kujau
2003-10-05 23:51 ` Erik Tews [this message]
2003-10-06 2:03 ` Mike Fedyk
2003-10-06 2:14 ` viro
2003-10-06 19:29 ` Oleg Drokin
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