From: Eric Dumazet <eric.dumazet@gmail.com>
To: Andrew Savchenko <bircoph@gmail.com>
Cc: netdev@vger.kernel.org
Subject: Re: [BUG] Kernel recieves DNS reply, but doesn't deliver it to a waiting application
Date: Mon, 04 Feb 2013 07:21:07 -0800 [thread overview]
Message-ID: <1359991267.30177.143.camel@edumazet-glaptop> (raw)
In-Reply-To: <20130204173932.bad780bc.bircoph@gmail.com>
On Mon, 2013-02-04 at 17:39 +0400, Andrew Savchenko wrote:
> With 16-days uptime system works fine.
>
> Also I was able to reproduce this bug on another box: an embedded
> system running openwrt with 3.7.5 kernel with openl2tpd client and
> dnsmasq server. Due to limited memory resources this bug happened to
> be easily reproducible: several thousands of dns queries were
> sufficient to reproduce this bug. Full debug on embedded box was not
> possible due to constrained resources, but bug appearance was the same
> and /proc/net/udp is apparently broken (see attached log).
>
> I applied your patch on openwrt's 3.7.5 kernel and it fixed the bug
> on this box too.
>
> So we've found a solution and I'm looking forward for it in the main
> kernel :)
Thanks a lot for testing, I'll send the official patch asap.
next prev parent reply other threads:[~2013-02-04 15:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-03 19:25 Kernel recieves DNS reply, but doesn't deliver it to a waiting application Andrew Savchenko
2012-10-13 12:36 ` [BUG] " Andrew Savchenko
2012-10-13 13:44 ` Eric Dumazet
2012-10-13 23:11 ` Andrew Savchenko
2012-10-20 23:25 ` Andrew Savchenko
2012-10-21 12:52 ` Eric Dumazet
2012-10-22 3:36 ` Andrew Savchenko
2012-10-22 6:48 ` Eric Dumazet
2012-10-22 21:27 ` Andrew Savchenko
2012-12-12 8:27 ` Andrew Savchenko
2012-12-23 11:06 ` Andrew Savchenko
2012-12-28 18:11 ` Eric Dumazet
2013-01-16 16:36 ` Andrew Savchenko
2013-02-04 13:39 ` Andrew Savchenko
2013-02-04 15:21 ` Eric Dumazet [this message]
2012-11-23 7:45 ` Andrew Savchenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1359991267.30177.143.camel@edumazet-glaptop \
--to=eric.dumazet@gmail.com \
--cc=bircoph@gmail.com \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox