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Seems related to #60066

Can you check which PECL version of geoip you are using? Seems to work here with 
geoip 1.0.8 and libgeoip 1.5.0

Hi.
When I use geoip 1.0.8, GeoIP C API 1.5.0 and apache 2.2.22 -> I get a segmentation fault.
After switching back to the GeoIP C API 1.4.8 it works fine (absolutely nothing else changed).
No strange configure options or compiler flags set...

Regards, Daniel

I've experienced the same problem with geoip-1.5.0 and geoip-1.5.1 working with php-fpm v.5.3.17
--------------
kernel: php-fpm[20929]: segfault at 14 ip a5037659 sp b6c56ac0 error 4 in libGeoIP.so.1.5.0[a502d000+31000]
kernel: grsec: From 10.0.1.7: Segmentation fault occurred at 00000014 in /usr/lib/php5.3/bin/php-fpm[php-fpm:20929], parent /usr/lib/php5.3/bin/php-fpm[php-fpm:20928]
kernel: grsec: From 10.0.1.7: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/lib/php5.3/bin/php-fpm[php-fpm:20929], parent /usr/lib/php5.3/bin/php-fpm[php-fpm:20928]

Thank you for this bug report. To properly diagnose the problem, we
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A backtrace would help a lot here since I cannot reproduce on my setup.

Hi.
Reproducted the segfault with pecl geoip 1.0.8 and GeoIP API 1.5.1.
Both pecl extension and api built without any additional options.

Unfortunately I cannot create a coredump file (I'm inside a shared environment and coredumps are disabled).

Here is a backtrace:

Core was generated by `/usr/bin/httpd -k start'.
Program terminated with signal 11, Segmentation fault.
#0  0xb7542846 in __strlen_sse2_bsf () from /usr/lib/libc.so.6
(gdb) bt
#0  0xb7542846 in __strlen_sse2_bsf () from /usr/lib/libc.so.6
#1  0xb619dcc8 in zif_geoip_database_info ()
   from /usr/local/php-5.5.0/lib/php/20121212/geoip.so
#2  0xb6d7cdbc in zend_do_fcall_common_helper_SPEC () from /usr/local/php/lib/libphp5.so
#3  0xb6cdaf36 in execute_ex () from /usr/local/php/lib/libphp5.so
#4  0xb6d7acb1 in zend_execute () from /usr/local/php/lib/libphp5.so
#5  0xb6cabdd9 in zend_execute_scripts () from /usr/local/php/lib/libphp5.so
#6  0xb6c3b1b6 in php_execute_script () from /usr/local/php/lib/libphp5.so
#7  0xb6d7ece8 in php_handler () from /usr/local/php/lib/libphp5.so
#8  0x0807827d in ap_run_handler ()
#9  0x080785ef in ap_invoke_handler ()
#10 0x08085590 in ap_process_request ()
#11 0x08082aa8 in ?? ()
#12 0x0807eabd in ap_run_process_connection ()
#13 0x0808a716 in ?? ()
#14 0x0808ac13 in ?? ()
#15 0x0808acdd in ?? ()
#16 0x0808bd10 in ap_mpm_run ()
#17 0x08063fa4 in main ()
(gdb)

In 1.5.0, Maxmind removed support for a couple of database types.

Change:
add_assoc_string(row, "description", (char *)GeoIPDBDescription[i], 1);

To:
if (GeoIPDBDescription[i]) {
add_assoc_string(row, "description", (char *)GeoIPDBDescription[i], 1);
}

The fix for this bug has been committed.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
http://snaps.php.net/.

 For Windows:

http://windows.php.net/snapshots/
 
Thank you for the report, and for helping us make PHP better.