Re: pppd stuck in ioctl(TIOCSETD) in Linux 2.6.15.4+

["Jorge Daniel Sequeira Matias" <martin@andorinha.ist.utl.pt>]

  I forgot to mention that I have analyzed the pppd logs and found out that 
it enters in this state when closing connection with the other peer. In 
particular, when the peer doesn't reply for N LCP Requests and our pppd 
gives up and terminate connection.
  What I mean is that, this happens when pppd is restoring TTY line 
discipline, after tcflush(). I saw this in the source code of pppd 2.4.3 
which is what I'm using.

  Anyway, I'll give the 2.6.17.1 a try and report again tomorrow.

Regards,
Jorge Matias


----- Original Message ----- 
From: "Phil Mayers" <p.mayers@imperial.ac.uk>
To: <linux-ppp@vger.kernel.org>
Sent: Wednesday, June 28, 2006 12:03 AM
Subject: Re: pppd stuck in ioctl(TIOCSETD) in Linux 2.6.15.4+


> Jorge Daniel Sequeira Matias wrote:
>>
>>  Hi everyone,
>>
>>  I'm running a PPTP VPN Server for almost 4 years now. This server is 
>> running in a Debian Linux (unstable).
>>  The configuration for the last 1 year and a half was the following:
>>
>>  Computer 2x Intel Xeon 2.6GHz and 512MB RAM
>>  Linux v2.6.11.6 (vanilla) with MPPE patch
>
>>   After the upgrade to a Linux v2.6.15.4 (vanilla) with no patches to
>
> There were a couple of bugs recently in the TTY layer related to poptop 
> and running pppd on PTYs, but I believe 2.6.15 did not contain them 
> (though I find the git logs incomprehensible so could be wrong). See:
>
> http://bugzilla.kernel.org/show_bug.cgi?idd02
> http://bugzilla.kernel.org/show_bug.cgi?ide30
>
> Just in case, you should definitely try the latest kernel - 2.6.17.1 is 
> stable.
>
> If that doesn't solve it and if you can reliably reproduce it you could do 
> a "git bisect" to track the bug down (tedious though):
>
> http://www.kernel.org/pub/software/scm/git/docs/git-bisect.html
> http://www.kernel.org/pub/software/scm/git/docs/howto/isolate-bugs-with-bisect.txt
> http://www.reactivated.net/weblog/archives/2006/01/using-git-bisect-to-find-buggy-kernel-patches/
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