Why is apache crashing?

Question

linux

Hello, Apache crashes periodically. The server is running ubuntu 14.04, Apache/2.4.10, PHP 5.5.12-2ubuntu4.1 (cli) (built: Oct 29 2014 11:59:49)
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Zend Engine v2.5.0 , Copyright (c) 1998-2014 Zend Technologies
with Zend OPcache v7.0.4-dev, Copyright (c) 1999-2014, by Zend
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[email protected]:/# gdb /usr/sbin/apache2 /tmp/apache-coredumps/core 
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Reading symbols from /usr/sbin/apache2...Reading symbols from /usr/lib/debug//usr/sbin/apache2...done.
done.
[New LWP 4294]
[New LWP 4300]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/sbin/apache2 -k start'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f254a2027f6 in i_create_execute_data_from_op_array (nested=<optimized out>, op_array=<optimized out>) at /build/buildd/php5-5.5.12+dfsg/Zend/zend_execute.c:1631
1631	/build/buildd/php5-5.5.12+dfsg/Zend/zend_execute.c: No such file or directory.
(gdb)

dmesg fails like this:

traps: apache2[7886] general protection ip:7feb364a67f6 sp:7fffafe896b0 error:0 in libphp5.so[7feb3602f000+8c6000]

On the web server there is only a php script that displays data from the firebird database. Tell me which way to dig? Thanks

Answer 1

need more info

gdb /usr/sbin/apache2 -c /tmp/apache-coredumps/core \                                                                                                                                                                          
--eval-command='set pagination off' \                                                                                                                                                                                            
--eval-command='bt full' \                                                                                                                                                                                                       
--eval-command='quit' >> /tmp/apache-coredumps/gdb-bt.log

Answer 2

TP zend?

Answer 3

what is TP? Installed everything from standard repositories