Date: Tue, 9 Mar 2010 22:49:03 +0100 (CET)
From: Daniel Stenberg <daniel_at_haxx.se>
To: libcurl development <curl-library_at_cool.haxx.se>
Subject: Re: Sporadic crash in curl_multi_perform ()
Message-ID: <alpine.DEB.2.00.1003092246320.20463_at_tvnag.unkk.fr>
Content-Type: text/plain; charset="iso-8859-15"; Format="flowed"

On Tue, 9 Mar 2010, MigueL D?aZ wrote:
>
> > The crash occurs in curl_multi_interface (see backtrace below), I'd like
> to
> > know what are the possible causes of a crash of this kind so I can start
> > looking for a solution.
> >
> > Extra information: Crash is not solid, I mean, it doesn't happen
> everytime,
> > maybe once or twice a day (The program it's supposed to run 24/7)
>
> What protocols are you using? Is the stack trace the same each time the
> crash
> happens?
>

I'm using HTTP over TCP without SSL. It's a long lived connection in which I
receive information every minute or so. And yes, the backtrace is always the
same.

>

The trace looks like a memory problem to me, which usually means you should
> use valgrind to hunt down the problems or that you're using for example
> OpenSSL multithreaded without the protection mutexes etc.
>

I have avoided multithreading issues by not using the same easy_handles I
pass to the multi interface anywhere else in my app.

>
> Further than so is hard to tell without more info.
>

Please tell me what kind of info should I provide and I'll be happy to post
it.

Regards,
Miguel.

-- 
"Think" is not a four-letter word.
       -- Anonymous

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Received on 2010-03-10