Re: Apache segmentation fault when loading libphp7.so

Hello everybody,

and thank you for you help so far.

I played around with gdb a little bit.

I re-configured php the way I did in 7.2 (just with some slight 
modifications), to use mysql, gd and some other things.

But this time, httpd stops with

Program received signal SIGSEGV, Segmentation fault.
resolve_stripslashes () at 
/usr/src/apache_testing/php-7.4.9/Zend/zend_cpuinfo.h:157
157             __builtin_cpu_init();

Before I had the fault

#0  resolve_base64_decode () at
/usr/src/apache_testing/php-7.4.9/Zend/zend_cpuinfo.h:141

Line 141 of zend_cpuinfo.h is the very same command
__builtin_cpu_init()

It seems, that exactly this command __builtin_cpu_init() fails for some 
reason...

Kai




Am 11.08.2020 um 20:24 schrieb [email protected]:
> Hi Keith,
> 
> Am 11.08.2020 um 16:51 schrieb Keith Roberts:
>> You could try logging PHP startup errors:
>>
>> https://www.php.net/manual/en/errorfunc.configuration.php#ini.display-startup-errors 
> 
> 
> this did not work. I have nothing on my screen or in any log.
> php -i sais I used the correct php.ini
> 
>> Or try running Apache daemon using valgrind:
>>
>> https://www.valgrind.org/docs/manual/quick-start.html
> 
> This was REALLY strange. I don't know if this is expected behaviour, but 
> using valgrind, the server is up and running.
> 
> I created a full output, ...
> 
> (valgrind --leak-check=full --show-leak-kinds=all -v 
> /usr/local/httpd-test/bin/httpd -k start)
> 
> ... which you can find here:
> https://pastebin.com/Dwgjxjgj
> 
> Greets
> Kai
> 
> 
> 
> 
> 
>>
>> HTH
>>
>> Keith
>>
>> On 11/08/2020 13:54, Kai Fürstenberg wrote:
>>> Hello Keith,
>>>
>>> no, it's not mod_alias, because debug log sais the module is loaded.
>>> Without mod_alias it looks like below.
>>>
>>> When I comment out phplib7.so, the server starts and is online.
>>>
>>> I don't know if it helps: httpd sends a return code 139.
>>> PHP in the CLI works.
>>>
>>>
>>> [Tue Aug 11 14:49:21.635494 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module authn_file_module from
>>> /usr/local/httpd-test/modules/mod_authn_file.so
>>> [Tue Aug 11 14:49:21.635606 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module authn_core_module from
>>> /usr/local/httpd-test/modules/mod_authn_core.so
>>> [Tue Aug 11 14:49:21.635688 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module authz_host_module from
>>> /usr/local/httpd-test/modules/mod_authz_host.so
>>> [Tue Aug 11 14:49:21.635796 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module authz_groupfile_module from
>>> /usr/local/httpd-test/modules/mod_authz_groupfile.so
>>> [Tue Aug 11 14:49:21.635874 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module authz_user_module from
>>> /usr/local/httpd-test/modules/mod_authz_user.so
>>> [Tue Aug 11 14:49:21.666338 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module authz_core_module from
>>> /usr/local/httpd-test/modules/mod_authz_core.so
>>> [Tue Aug 11 14:49:21.666433 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module access_compat_module from
>>> /usr/local/httpd-test/modules/mod_access_compat.so
>>> [Tue Aug 11 14:49:21.666522 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module auth_basic_module from
>>> /usr/local/httpd-test/modules/mod_auth_basic.so
>>> [Tue Aug 11 14:49:21.666617 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module reqtimeout_module from
>>> /usr/local/httpd-test/modules/mod_reqtimeout.so
>>> [Tue Aug 11 14:49:21.666713 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module filter_module from
>>> /usr/local/httpd-test/modules/mod_filter.so
>>> [Tue Aug 11 14:49:21.666805 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module mime_module from
>>> /usr/local/httpd-test/modules/mod_mime.so
>>> [Tue Aug 11 14:49:21.666907 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module log_config_module from
>>> /usr/local/httpd-test/modules/mod_log_config.so
>>> [Tue Aug 11 14:49:21.666999 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module env_module from
>>> /usr/local/httpd-test/modules/mod_env.so
>>> [Tue Aug 11 14:49:21.667102 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module headers_module from
>>> /usr/local/httpd-test/modules/mod_headers.so
>>> [Tue Aug 11 14:49:21.667195 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module setenvif_module from
>>> /usr/local/httpd-test/modules/mod_setenvif.so
>>> [Tue Aug 11 14:49:21.667298 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module version_module from
>>> /usr/local/httpd-test/modules/mod_version.so
>>> [Tue Aug 11 14:49:21.667395 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module unixd_module from
>>> /usr/local/httpd-test/modules/mod_unixd.so
>>> [Tue Aug 11 14:49:21.667484 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module status_module from
>>> /usr/local/httpd-test/modules/mod_status.so
>>> [Tue Aug 11 14:49:21.667588 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module autoindex_module from
>>> /usr/local/httpd-test/modules/mod_autoindex.so
>>> [Tue Aug 11 14:49:21.667680 2020] [so:debug] [pid 25863:tid 3082425792]
>>> mod_so.c(266): AH01575: loaded module dir_module from
>>> /usr/local/httpd-test/modules/mod_dir.so
>>> Speicherzugriffsfehler
>>>
>>> Kai
>>>
>>>
>>> Am 11.08.2020 um 14:05 schrieb Keith Roberts:
>>>> Hi Kai,
>>>>
>>>> Is it seg faulting when the mod_alias mod is loaded?
>>>>
>>>> Can you try to run apache and PHP module without the mod_alias 
>>>> module to
>>>> see if it happens then?
>>>>
>>>> Kind Regards,
>>>>
>>>> Keith Roberts
>>>>
>>>> On 11/08/2020 11:21, Kai Fürstenberg wrote:
>>>>> /usr/local/httpd-test/modules/mod_dir.so
>>>>> [Tue Aug 11 12:04:48.058215 2020] [so:debug] [pid 24664:tid 
>>>>> 3083007424]
>>>>> mod_so.c(266): AH01575: loaded module alias_module from
>>>>> /usr/local/httpd-test/modules/mod_alias.so
>>>>> Speicherzugriffsfehler
>>>>>
>>>>> "Speicherzugrifftsfehler" = "Segmentation fault"