"libgcc_s.so.1 must be installed for pthread_cancel to work"

[quietFinn]

Hello,

in a VPS I did MySQL Upgrade from 5.1 to 5.5.
After the upgrade I am getting a 500-error in some (not all) sites.
In /usr/local/apache/logs/error_log I see this:
[Fri Dec 27 17:22:45 2013] [error] [client xx.xxx.xxx.xx] libgcc_s.so.1 must be installed for pthread_cancel to work
[Fri Dec 27 17:22:45 2013] [error] [client xx.xxx.xxx.xx] Premature end of script headers: index.php

WHM 11.40.1 (build 8)
CENTOS 6.5 x86_64 vmware

PHP 5.2.17
mysql 5.5.34
Apache 2.2.26

libgcc_s.so.1 exists:
/lib/libgcc_s.so.1
/lib64/libgcc_s.so.1

I ran EasyApache a few times with different settings, and upcp --force, still the same.

 

[cPanelMichael]

Hello

Could you check to see if there are any "RLimitMEM" limits in your Apache configuration file?

Thank you.

 

[quietFinn]

Hello

Could you check to see if there are any "RLimitMEM" limits in your Apache configuration file?

Yes there is:

grep "RLimitMEM" /usr/local/apache/conf/httpd.conf
RLimitMEM 228335274

 

[cPanelMichael]

Please try removing this limit to see if the issue continues.

Thank you.

 

[quietFinn]

Please try removing this limit to see if the issue continues.

Yes that solved it, thank you.

Then I went to WHM -> Service Configuration -> Apache Configuration -> Memory Usage Restrictions

That added the same line in httpd.conf, so the error was back.

When I edited the line from
RLimitMEM 228335274
to
RLimitMEM 328335274

the error went away again.

So it seems that for some reason in that server it's not safe to use that "Memory Usage Restrictions" function.


And I suppose it's good to tell this:

If you edit httpd.conf by yourself you have to run:

/usr/local/cpanel/bin/apache_conf_distiller --update
/usr/local/cpanel/bin/build_apache_conf
/etc/rc.d/init.d/httpd -k restart

 

[rpili1313]

Hi,

I have the same problem but can't seem to find RMlimit line in the config file.
Could you please help?

I'm a noob an unix so pls be accurate on the commands

Thx

 

[cPanelMichael]

Could you elaborate on the details of how you are having the exact same problem? For instance, what error message do you receive?

Thank you.

 

[RonanRBR]

i have the same problem, but occurs only with limited user

 

[cPanelMichael]

It's important to let us know what exact issue you are experiencing, as often times it's completely different than the original post.

Thank you.