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Date: Mon, 05 Aug 2013 09:32:11 +0200
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To: Rasmus Lerdorf <rasmus@lerdorf.com>
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Subject: Re: [PHP-DEV] Segfault on mysqlnd stream cast
From: php@hristov.com (Andrey Hristov)

  Hi Rasmus,
On 08/03/2013 07:51 PM, Rasmus Lerdorf wrote:
> Hey Johannes, could you take a look at:
>
> https://gist.github.com/anonymous/6143477
>
> You can reproduce in 5.5 with:
>
> sapi/cli/php ext/mysqli/tests/mysqli_poll_kill.php
>
> main/streams/cast.c:306 is:
>
> if (php_stream_is_filtered(stream)) {
>
> but php_stream_is_filtered is just a macro that isn't expecting stream
> to be null and you get the segfault there because it is trying to
> dereference it. We could just add a null check, of course, but I think
> the problem is in mysqlnd. mysqlnd_stream_array_to_fd_set() shouldn't be
> trying to cast null streams.
>
> -Rasmus
>

I just tried the combo PHP 5.5 (git) with MySQL 5.6 (13-dev) without 
segfault. What's your setup?


Andrey