Re: reiserfs one user DoS?

Christian Kujau
2003-10-05T16:09:21Z

Hans Reiser schrieb:
> Max A. Krasilnikov wrote:
>
>> Hi!
>> 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.

man bash-builtins, search for "ulimit" then.

Christian.
--
BOFH excuse #153:

Big to little endian conversion error