Re: socket.c:4524: unexpected error:

Hi,
my system is Debian Etch 32Bit running kernel version 2.6.18
uname -a
Linux 2.6.18-6-686 #1 SMP Tue Jun 17 21:31:27 UTC 2008 i686 GNU/Linux.
i looked at my old version (9.4.3) Bind and saw the same error but
since i upgrade i have the filling i seeing this error more often.
this is the log from my DNS server :

18-Aug-2009 21:25:04.722 general: error: socket.c:4524: unexpected error:
18-Aug-2009 21:25:04.722 general: error: 22/Invalid argument
21-Aug-2009 01:10:15.121 general: error: socket.c:4524: unexpected error:
21-Aug-2009 01:10:15.121 general: error: 22/Invalid argument
23-Aug-2009 19:16:00.908 general: error: socket.c:4524: unexpected error:
23-Aug-2009 19:16:00.908 general: error: 22/Invalid argument
24-Aug-2009 18:02:57.468 general: error: socket.c:4524: unexpected error:
24-Aug-2009 18:02:57.468 general: error: 22/Invalid argument
24-Aug-2009 20:26:38.731 general: error: socket.c:4524: unexpected error:
24-Aug-2009 20:26:38.731 general: error: 22/Invalid argument
28-Aug-2009 02:01:48.842 general: error: socket.c:4524: unexpected error:
28-Aug-2009 02:01:48.842 general: error: 22/Invalid argument
28-Aug-2009 15:12:37.524 general: error: socket.c:4524: unexpected error:
28-Aug-2009 15:12:37.524 general: error: 22/Invalid argument
29-Aug-2009 12:57:30.851 general: error: socket.c:4524: unexpected error:
29-Aug-2009 12:57:30.851 general: error: 22/Invalid argument
29-Aug-2009 12:57:31.244 general: error: socket.c:4524: unexpected error:
29-Aug-2009 12:57:31.244 general: error: 22/Invalid argument
29-Aug-2009 23:14:47.951 general: error: socket.c:4524: unexpected error:
29-Aug-2009 23:14:47.951 general: error: 22/Invalid argument
29-Aug-2009 23:14:51.792 general: error: socket.c:4524: unexpected error:
29-Aug-2009 23:14:51.792 general: error: 22/Invalid argument
30-Aug-2009 16:30:37.384 general: error: socket.c:4524: unexpected error:
30-Aug-2009 16:30:37.384 general: error: 22/Invalid argument
30-Aug-2009 20:37:18.701 general: error: socket.c:4524: unexpected error:
30-Aug-2009 20:37:18.701 general: error: 22/Invalid argument
31-Aug-2009 14:37:02.042 general: info: zone 018.net.il/IN: loaded
serial 2009083100
31-Aug-2009 17:28:09.361 general: error: socket.c:4524: unexpected error:
31-Aug-2009 17:28:09.361 general: error: 22/Invalid argument
31-Aug-2009 18:15:01.752 general: error: socket.c:4524: unexpected error:
31-Aug-2009 18:15:01.752 general: error: 22/Invalid argument
01-Sep-2009 19:48:08.164 general: error: socket.c:4524: unexpected error:
01-Sep-2009 19:48:08.164 general: error: 22/Invalid argument


should i have to worry about this or can i just disregard this errors?

BTW
if there's any way i can help to debug this problem i will be more
then happy to assist here.

thanks in advance,

Ram


2009/8/31 JINMEI Tatuya / 神明達哉 <jinmei@xxxxxxx>:
At Sun, 30 Aug 2009 11:01:08 +0300,
Ram Akuka <ramakuka@xxxxxxxxx> wrote:

recently i upgraded my DNS to 9.4.3P3 (from 9.4.3).
since then i can see the below error more often:
30-Aug-2009 02:27:24.925 general: error: socket.c:4524: unexpected error:
30-Aug-2009 02:27:24.925 general: error: 22/Invalid argument
i can see there's an open bug on this issue -
http://www.mail-archive.com/bind-users@xxxxxxxxxxxxx/msg03339.html,
but i can't understand what's the effects of this bug.
is there any way i can help solve this bug? can i know how this
effects my service . should i expect some service interruption or
anything like that ?
should i consider downgrade to 9.4.2P2?

First off, please identify the operating system and its version. This
kind of thing can be highly dependent on OS-level details.

Secondly, I suspect it's less likely that the difference from 9.4.3
and 9.4.3-P3 suddenly causes this failure. If you really see more of
this after upgrading to 9.4.3-P3 from 9.4.3, I guess it's more likely
because (e.g.) a change of query pattern. Or do you mean you upgraded
from 9.4.2-P2 to 9.4.3-P3?

Also, how often did it happen? While it's an unexpected error in this
context, a system call (connect(2) in this case) can fail for any
reason and the other part of named has some level of resilience to
such cases. So, unless it's very frequent you may be able to ignore
the warnings safely in practice.

---
JINMEI, Tatuya
Internet Systems Consortium, Inc.

.

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