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Re: php5-fpm segfault error 6 in libpcre.so.3.13.1




On 06/09/2017 12:27 PM, Lucio Crusca wrote:
> Hi all,
> 
> I've a problem with a stretch/amd64 web server. Since two hours ago, I
> get the following in dmesg and syslog:
> 
> Jun  9 11:21:01 weber kernel: [  331.716831] php5-fpm[1245]: segfault at
> 7ffcb4febf70 ip 00007f2e5e8d629a sp 00007ffcb4febf60 error 6 in
> libpcre.so.3.13.3[7f2e5e8c2000+72000]
> 
> which in turn results in a http 503 status code. However that happens
> only for one of the two VirtualHosts that make use of php5-fpm.
> 
> I've already tried lowering  pcre values in /etc/php5/fpm/php.ini:

Stretch (Debian 9) doesn't include PHP 5.x, it includes PHP 7.0 so the
configuration file for PHP-FPM is /etc/php/7.0/fpm/php.ini. If you have
PHP 5.x packages installed then they are absolute from previous Debian
versions.

> pcre.backtrack_limit=100
> pcre.recursion_limit=1000
> 
> and restarting php5-fpm (and the whole server for that matter), but
> nothing changed. The server has 8GB of RAM memory and
> 
> # ulimit -s
> 8192
> 
> What could I do to find the cause?
>