talkd

[Mateus Cordeiro Inssa]

kuznet en ms2.inr.ac.ru writes:
 > Hello!
 > 
 > > Jan 29 09:57:36 xar kernel: Remind Kuznetsov, he has to repair in.ntalkd
 > > eventually
 > 
 > I APOLOGIZE. This message is mainly for local INR folks, printed after
 > someone removed previous version of this message and caused massive
 > application breakage. 8)
 > 
 > In your case you have not so much chances to find a Mr.Kuznetsov
 > to repair this application, sed Kuznetsov to Debian and redirect
 > the request to Debian.

  Hi,

  This message is printed by net/udp.c :

    if (usin->sin_family != AF_INET) {
         if (usin->sin_family != AF_UNSPEC)
               return -EINVAL;
         if (net_ratelimit())
            printk("Remind Kuznetsov, he has to repair %s eventually\n", current->comm);
    }
      
  I saw this messages too and what I discovered was:

1) Create an udp socket and bind it to a port and INADDR_ANY
2) Send a mensage to this socket from localhost
3) The first recvfrom returns the sockaddr with address (IP) equal 0
(not 127.0.0.1 or ethernet address) and replying to this request with
this sockaddr causes that printk .
4) Next recvfrom returns sockaddr right.

Mateus Cordeiro Inssa
---------------------
Linux User: 76186  Kernel: 2.3.40
ICQ (Licq): 15243895
---------------------
mateus en ifnet.com.br
mateus en cwb.fnn.net

Sun Jan 30 00:40:34 BRDT 2000

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