reload -> unable to read what child say: Bad file descriptor (9)

[Florian Engelmann]

OS: Ubuntu 12.04.2 LTS
Kernel: 3.5.0-43-generic #66~precise1-Ubuntu x86_64 GNU/Linux
php5-fpm: 5.3.10-1ubuntu3.10

Sometimes php-fpm crashes with:

[04-Mar-2014 06:47:45] NOTICE: Finishing ...
[04-Mar-2014 06:47:45] ERROR: unable to read what child say: Bad file descriptor (9)
[04-Mar-2014 06:47:45] ERROR: unable to read what child say: Bad file descriptor (9)
[04-Mar-2014 06:47:45] NOTICE: exiting, bye-bye!

"service php5-fpm reload" also causes a crash (sometimes):

[05-Mar-2014 09:56:04] NOTICE: Reloading in progress ...
[05-Mar-2014 09:56:04] ERROR: unable to read what child say: Bad file descriptor (9)
[05-Mar-2014 09:56:04] ERROR: unable to read what child say: Bad file descriptor (9)
[05-Mar-2014 09:56:04] NOTICE: reloading: execvp("/usr/sbin/php5-fpm", {"/usr/sbin/php5-fpm", "--fpm-config", "/etc/php5/fpm/php-fpm.conf"})
[05-Mar-2014 09:56:04] NOTICE: PHP message: PHP Deprecated: Comments starting with '#' are deprecated in /etc/php5/fpm/conf.d/ming.ini on line 1 in Unknown on line 0
[05-Mar-2014 09:56:04] NOTICE: using inherited socket fd=9, "/var/run/php-fpm-jti.sock"
[...]
[05-Mar-2014 09:57:02] NOTICE: Reloading in progress ...
[05-Mar-2014 09:57:02] ERROR: unable to read what child say: Bad file descriptor (9)
[05-Mar-2014 09:57:36] NOTICE: fpm is running, pid 61663
[05-Mar-2014 09:57:36] NOTICE: ready to handle connections

This might be ralted to bug:
https://bugs.php.net/bug.php?id=65800

And could be fixed with:
http://us-east.manta.joyent.com/bcantrill/public/OS-2517.diff.txt

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.