From: Dave Jones <davej@redhat.com>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: Re: ax25_recvmsg lockup
Date: Sat, 3 Aug 2013 20:25:20 -0400 [thread overview]
Message-ID: <20130804002520.GA10206@redhat.com> (raw)
In-Reply-To: <20130803.134604.508965748339486186.davem@davemloft.net>
On Sat, Aug 03, 2013 at 01:46:04PM -0700, David Miller wrote:
> From: Dave Jones <davej@redhat.com>
> Date: Mon, 17 Jun 2013 10:28:03 -0400
>
> > With the right arguments from userspace, reading from an ax25 socket
> > can spend long enough in the kernel that it triggers the softlockup
> > detector. I hit a bunch of these traces in a trinity run that I
> > left running over the weekend.
>
> I looked at this a bunch of times and am still mystified how this
> can happen.
>
> It should be simple to diagnose since I doubt there is any real
> AX25 traffic going to these sockets.
>
> Any chance you can figure out what the arguments are that cause
> this problem? That'll probably help a lot, thanks!
I've not seen it in a while, I'll have a think about what I can
do to try and provoke it more reliably on Monday.
Dave
next prev parent reply other threads:[~2013-08-04 0:25 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-17 14:28 ax25_recvmsg lockup Dave Jones
2013-08-03 20:46 ` David Miller
2013-08-04 0:25 ` Dave Jones [this message]
2013-08-04 16:04 ` Dave Jones
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=20130804002520.GA10206@redhat.com \
--to=davej@redhat.com \
--cc=davem@davemloft.net \
--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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.