Hi,

What is the kernel version?

Have you verified the memories w/ e.g. Memtest?

How busy are these web servers? Is it related to high load or only a few visits cause this?

Regards,

> On 19.11.2013, at 15:38, Radoslav Stefanov <rsarzhar@gmail.com> wrote:
>
> Hello,
>
> I have a few busy web servers using nginx with php-fpm and some of them started getting lots of segfaults and general protection errors in dmesg.
>
> PHP 5.4.21
>
>
>> php-cgi[30676]: segfault at 8048 ip 00007f7485e1be9c sp 00007fffe52d4fe0 error 4 in libsqlite3.so.0.8.6[7f7485dff000+8c000]
>> php-cgi[19623]: segfault at 8048 ip 00007fd54550de9c sp 00007fff2725fbb0 error 4 in libsqlite3.so.0.8.6[7fd5454f1000+8c000]
>> php-cgi[22296]: segfault at 8048 ip 00007f5d643fee9c sp 00007fff5d72f260 error 4 in libsqlite3.so.0.8.6[7f5d643e2000+8c000]
>> php-cgi[23506]: segfault at 8048 ip 00007f08bfd8de9c sp 00007fff09ed7690 error 4 in libsqlite3.so.0.8.6[7f08bfd71000+8c000]
>> php-cgi[24017]: segfault at 8048 ip 00007fde002c4e9c sp 00007fff4465ffa0 error 4 in libsqlite3.so.0.8.6[7fde002a8000+8c000]
>> php-cgi[30035]: segfault at 8048 ip 00007f8932f85e9c sp 00007fff9d9344e0 error 4 in libsqlite3.so.0.8.6[7f8932f69000+8c000]
>> php-cgi[30808]: segfault at 8048 ip 00007f73886c1e9c sp 00007fffa6b795d0 error 4 in libsqlite3.so.0.8.6[7f73886a5000+8c000]
>> php-cgi[31574]: segfault at 8048 ip 00007f8fe9186e9c sp 00007fffb61c78d0 error 4 in libsqlite3.so.0.8.6[7f8fe916a000+8c000]
>> php-cgi[10575]: segfault at 8048 ip 00007f39df86de9c sp 00007fff26905fc0 error 4 in libsqlite3.so.0.8.6[7f39df851000+8c000]
>> php-cgi[15197]: segfault at 8048 ip 00007f9dbb032e9c sp 00007fff18759340 error 4 in libsqlite3.so.0.8.6[7f9dbb016000+8c000]
>> php-cgi[22091]: segfault at 8048 ip 00007f6b50f8ae9c sp 00007fff275850d0 error 4 in libsqlite3.so.0.8.6[7f6b50f6e000+8c000]
>> php-fpm[31211] general protection ip:5b7629 sp:7fffd7958c20 error:0 in php-fpm[400000+34e000]
>> php-fpm[31210] general protection ip:5b7629 sp:7fffd7958c20 error:0 in php-fpm[400000+34e000]
>> php-fpm[31208] general protection ip:5b7629 sp:7fffd7958c20 error:0 in php-fpm[400000+34e000]
>> php-fpm[31499] general protection ip:5b7629 sp:7fffd7958c20 error:0 in php-fpm[400000+34e000]
>> php-fpm[31707] general protection ip:5b7629 sp:7fffd7958c20 error:0 in php-fpm[400000+34e000]
>> php-fpm[6416] general protection ip:5b7629 sp:7fff153e1220 error:0 in php-fpm[400000+34e000]
>> php-fpm[7935] general protection ip:5b7629 sp:7fffb10a3fe0 error:0 in php-fpm[400000+34e000]
>> php-fpm[8175] general protection ip:5b7629 sp:7fffb10a3fe0 error:0 in php-fpm[400000+34e000]
>> php-fpm[7932] general protection ip:5b7629 sp:7fffb10a3fe0 error:0 in php-fpm[400000+34e000]
>> php-fpm[10711] general protection ip:5b7629 sp:7fffb10a3fe0 error:0 in php-fpm[400000+34e000]
>> php-fpm[11425] general protection ip:5b7629 sp:7fffb10a3fe0 error:0 in php-fpm[400000+34e000]
>> php-fpm[7867]: segfault at 0 ip 00007f47e41da6fd sp 00007fffb109e820 error 6 in apc.so[7f47e41c8000+24000]
>> php-cgi[19350]: segfault at 8048 ip 00007fdb29082e9c sp 00007fff27bb2fc0 error 4 in libsqlite3.so.0.8.6[7fdb29066000+8c000]
>
> Does anyone have any clues what could cause them or how to trace this? It seems there is no impact on user experience, no 500 errors or anything, but I would like to know what is happening.
>
> Thanks
>
>
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