[rc5] Re: what's an evil packet ?

Harald Koenig koenig at tat.physik.uni-tuebingen.de
Wed Jul 9 00:19:50 EDT 1997


On Jul 8, Chris Underhill wrote:

> Yep - I reported seeing this kind of message a week or two back. Had a
> machine which has /home , /usr mounted over NFS lock up because of it.
> Keyboard was dead, couldn't log in with ssh or telnet, did respond to
> pings. The messages I got consisted of
> 
> Jun 29 14:23:25 solar30 kernel: RPC: rpc_doio sending evil packet:
> Jun 29 14:23:25 solar30 kernel:      7e3cc852 01000000 00000000 00000000
>                                      00000000 00000000 00000000 72032531
> Jun 29 14:23:25 solar30 kernel: RPC: rpc_send sending evil packet:
> Jun 29 14:23:25 solar30 kernel:      7e3cc852 01000000 00000000 00000000
>                                      00000000 00000000 00000000 72032531
> 
> 
> repeating every minute, along with "NFS server bison not responding...".

some more infos about these hex values:
they change on the same host every time when I kill/restart rc5v2!
on the same PC I got:

      0f3ba45e 01000000 00000000 00000000 00000000 00000000 00000000 01000000
      3561e15e 01000000 00000000 00000000 00000000 00000000 00000000 01000000
      c84adc5e 01000000 00000000 00000000 00000000 00000000 00000000 01000000

> Funnily enough I was running rc5-linux-i486-bovine as well, and logging
> its output to a subdirectory of my NFS-mounted home directory. Machine in
> question is a cheapo pentium-100 running bog-standard 2.0.30, universal
> NFS server 2.2beta25.

looks like rc5v2 and rc5-linux-i486-bovine trigger some Linux 2.0.30 NFS bug ?!


Harald
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