very wierd problem: httpd/php caused kernel segfualt.

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kangzj

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Nov 27, 2010
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7
/var/log/messages are many segfault errors as follows,
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Apr 26 13:42:32 host kernel: httpd[25056]: segfault at 00007fff4d5db928 rip 00002ba1807da57a rsp 00007fff4d5db910 error 6
Apr 26 13:42:33 host kernel: httpd[29267]: segfault at 00007fff4d5db878 rip 00002ba1807da57a rsp 00007fff4d5db860 error 6
Apr 26 13:42:34 host kernel: httpd[29642]: segfault at 00007fff4d5db3a8 rip 00002ba1807da57a rsp 00007fff4d5db390 error 6
Apr 26 13:42:35 host kernel: httpd[30302]: segfault at 00007fff4d5db248 rip 00002ba1807da57a rsp 00007fff4d5db230 error 6
Apr 26 13:42:37 host kernel: httpd[26788]: segfault at 00007fff4d5db5b8 rip 00002ba1807da57a rsp 00007fff4d5db5a0 error 6
Apr 26 13:42:38 host kernel: httpd[26789]: segfault at 00007fff4d5dbb38 rip 00002ba1807da57a rsp 00007fff4d5dbb20 error 6
Apr 26 13:42:44 host kernel: httpd[31417]: segfault at 00007fff4d5dbb38 rip 00002ba1807da57a rsp 00007fff4d5dbb20 error 6
Apr 26 13:42:46 host kernel: httpd[31430]: segfault at 00007fff4d5db5b8 rip 00002ba1807da57a rsp 00007fff4d5db5a0 error 6
Apr 26 13:42:46 host kernel: httpd[28526]: segfault at 00007fff4d5dbb38 rip 00002ba1807da57a rsp 00007fff4d5dbb20 error 6
Apr 26 13:42:46 host kernel: httpd[31429]: segfault at 00007fff4d5db718 rip 00002ba1807da57a rsp 00007fff4d5db700 error 6
Apr 26 13:42:46 host kernel: httpd[32406]: segfault at 00007fff4d5dcec0 rip 00002ba1807e2493 rsp 00007fff4d5dcec0 error 6
Apr 26 13:42:48 host kernel: httpd[31424]: segfault at 00007fff4d5db7c8 rip 00002ba1807da57a rsp 00007fff4d5db7b0 error 6
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I did trouble shooting for a long time, but nothing unusual found. So I reinstall the OS of the server, and this message came out again. I went crazy about this, any idea please?
 
Im using CentOS 5.6 with latest directadmin and apache and none of those segfault are coming out since 2 weeks on 5.6 release.

I would suggest a complete backup of user in a separate hard-disk cause, maybe, your hard disk is damaged.

A clean install of OS and DA that give same error make me just think on an hardware problem, mostly hard-disk or ram.

I would suggest a backup, then a memory test, and then an hard drive test

Regards
 
@kangzj

Did you add any extra mods either to Apache or to PHP? Do you use custombuild in order to install and update Apache/PHP? What are versions of them?
 
This could be caused if apache is compiled with threads support (worker and not prefork).
 
SeLLeRoNe said:
Im using CentOS 5.6 with latest directadmin and apache and none of those segfault are coming out since 2 weeks on 5.6 release.

I would suggest a complete backup of user in a separate hard-disk cause, maybe, your hard disk is damaged.

A clean install of OS and DA that give same error make me just think on an hardware problem, mostly hard-disk or ram.

I would suggest a backup, then a memory test, and then an hard drive test

Regards
Click to expand...

I upgraded php from 5.2.17 to 5.3.6 and the error is gone.
But some of my clients' website is incompatable with php 5.3. :confused:
 
Not much you can do there wont be any more updates to 5.2 php.
 
zEitEr said:
@kangzj

Did you add any extra mods either to Apache or to PHP? Do you use custombuild in order to install and update Apache/PHP? What are versions of them?
Click to expand...

Just zend optimizer 3.3 and nothing else.

custombuild 1.1
apache 2.2
php 5.2.17
 
wrong/missing dependencies against compiled wrong progversions - i had some similiar but cannot remember right now
 
Can anybody please help me look into it?
If the problem is solved, I will offer $100 in return.
 
Does it anyhow influence on browsing your website? Can you provide a link from your site(-s) which would with defined certainty drop that error? What do you see in browser? In apache vhost logs?
 
@kangzj,

Did you manage to solve the issue? I'm finding a solution while I have the same thing on one of servers. And I'm at a loss.
 
Last edited:
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