Похожая проблема - внезапно стал падать сайт (только один из всех на сервере) на вызове функции mail и только в том случае если перед вызовом подключено ядро битрикса.
Если просто вызвать mail - то все работает. Падает все - и php-fpm и cgi и libphp5
bt
Core was generated by `php-fpm: pool best '.
Program terminated with signal 11, Segmentation fault.
#0 0x00007ffb29b07580 in strcat () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install
aspell-0.60.6-12.el6.x86_64 cyrus-sasl-lib-2.1.23-15.el6_6.1.x86_64
freetype-2.3.11-14.el6_3.1.x86_64 glibc-2.12-1.149.el6_6.5.x86_64
keyutils-libs-1.4-5.el6.x86_64 libX11-1.6.0-2.2.el6.x86_64
libXau-1.0.6-4.el6.x86_64 libXpm-3.5.10-2.el6.x86_64
libcurl-7.19.7-40.el6_6.3.x86_64 libgcc-4.4.7-11.el6.x86_64
libgcrypt-1.4.5-11.el6_4.x86_64 libgpg-error-1.7-4.el6.x86_64
libicu-4.2.1-9.1.el6_2.x86_64 libidn-1.18-2.el6.x86_64
libjpeg-turbo-1.2.1-3.el6_5.x86_64 libmcrypt-2.5.8-9.el6.x86_64
libmysqlclient16-5.1.69-1.w6.x86_64 libpng-1.2.49-1.el6_2.x86_64
libssh2-1.4.2-1.el6.x86_64 libstdc++-4.4.7-11.el6.x86_64
libtidy-0.99.0-19.20070615.1.el6.x86_64 libxcb-1.9.1-2.el6.x86_64
libxslt-1.1.26-2.el6_3.1.x86_64 nspr-4.10.6-1.el6_5.x86_64
nss-3.16.2.3-3.el6_6.x86_64 nss-softokn-3.14.3-19.el6_6.x86_64
nss-softokn-freebl-3.14.3-19.el6_6.x86_64
nss-util-3.16.2.3-2.el6_6.x86_64 openssl-1.0.1e-30.el6_6.5.x86_64
php-mcrypt-5.3.3-3.el6.x86_64 php-pecl-zendopcache-7.0.4-1.el6.x86_64
postgresql-libs-8.4.20-1.el6_5.cloudlinux.x86_64
sqlite-3.6.20-1.el6.x86_64
(gdb) bt
#0 0x00007ffb29b07580 in strcat () from /lib64/libc.so.6
#1 0x000000000050e5c3 in php_mail (to=0x55a61c8 "oleg@best-web-design.best ",
subject=0x5670268
"=?windows-1251?B?ZXh0eWwtcHJvLnJ1OiDn4O/u6+3l7eAgd2ViLfTu8OzgIFsxMF0gSQ==?=
=?windows-1251?B?bnRyYW5ldCBMYW5kaW5nIFBhZ2UgVE9Q?=",
message=0x564d908 "best-web-design.best\n\n\307\340\357\356\353\355\345\355\340
web-\364\356\360\354\340: [10] Intranet Landing Page
TOP\n\n\302\340\370\345 \350\354\377\n", '*' <repeats 31 times>,
"\n\322\340\362\374\377\355\340\n\n\322\345\353\345\364\356\ 355
\350\353\350 e-mail\n", '*' <repeats 31 times>,
"\nYfcnz29121995@mail.ru \n\n\312\360\340\362\352\340\377 \357"...,
headers=0x413ab00 "From:Intranet_Landing@best-web-design.best \nReply-To: Intranet_Landing@best-web-design.best \nX-Priority: 3 (Normal)\nTo: oleg@best-web-design.best \nX-MID:
21898.206 (29.01.2015 02:08:17)\nX-EVENT_NAME:
FORM_FILLING_Extyl_PRO_Int"..., extra_cmd=0x0) at
/usr/include/bits/string3.h:144
#2 0x000000000050e981 in zif_mail (ht=<value optimized out>,
return_value=0x56734f8, return_value_ptr=<value optimized out>,
this_ptr=<value optimized out>,
return_value_used=<value optimized out> [Шутливо] at /usr/src/debug/php-5.3.3/ext/standard/mail.c:178
#3 0x00000000005f3bf8 in zend_do_fcall_common_helper_SPEC
(execute_data=<value optimized out> [Шутливо] at
/usr/src/debug/php-5.3.3/Zend/zend_vm_execute.h:316
#4 0x00000000005cad40 in execute (op_array=0x321f8e0) at /usr/src/debug/php-5.3.3/Zend/zend_vm_execute.h:107
#5 0x00000000005a4f5d in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/src/debug/php-5.3.3/Zend/zend.c:1235
#6 0x0000000000552fe8 in php_execute_script (primary_file=0x7fff02eb3b40) at /usr/src/debug/php-5.3.3/main/main.c:2268
#7 0x00000000006374c8 in main (argc=<value optimized out>,
argv=<value optimized out> [Шутливо] at
/usr/src/debug/php-5.3.3/sapi/fpm/fpm/fpm_main.c:1925
Если просто вызвать mail - то все работает. Падает все - и php-fpm и cgi и libphp5
bt
Core was generated by `php-fpm: pool best '.
Program terminated with signal 11, Segmentation fault.
#0 0x00007ffb29b07580 in strcat () from /lib64/libc.so.6
Missing separate debuginfos, use: debuginfo-install
aspell-0.60.6-12.el6.x86_64 cyrus-sasl-lib-2.1.23-15.el6_6.1.x86_64
freetype-2.3.11-14.el6_3.1.x86_64 glibc-2.12-1.149.el6_6.5.x86_64
keyutils-libs-1.4-5.el6.x86_64 libX11-1.6.0-2.2.el6.x86_64
libXau-1.0.6-4.el6.x86_64 libXpm-3.5.10-2.el6.x86_64
libcurl-7.19.7-40.el6_6.3.x86_64 libgcc-4.4.7-11.el6.x86_64
libgcrypt-1.4.5-11.el6_4.x86_64 libgpg-error-1.7-4.el6.x86_64
libicu-4.2.1-9.1.el6_2.x86_64 libidn-1.18-2.el6.x86_64
libjpeg-turbo-1.2.1-3.el6_5.x86_64 libmcrypt-2.5.8-9.el6.x86_64
libmysqlclient16-5.1.69-1.w6.x86_64 libpng-1.2.49-1.el6_2.x86_64
libssh2-1.4.2-1.el6.x86_64 libstdc++-4.4.7-11.el6.x86_64
libtidy-0.99.0-19.20070615.1.el6.x86_64 libxcb-1.9.1-2.el6.x86_64
libxslt-1.1.26-2.el6_3.1.x86_64 nspr-4.10.6-1.el6_5.x86_64
nss-3.16.2.3-3.el6_6.x86_64 nss-softokn-3.14.3-19.el6_6.x86_64
nss-softokn-freebl-3.14.3-19.el6_6.x86_64
nss-util-3.16.2.3-2.el6_6.x86_64 openssl-1.0.1e-30.el6_6.5.x86_64
php-mcrypt-5.3.3-3.el6.x86_64 php-pecl-zendopcache-7.0.4-1.el6.x86_64
postgresql-libs-8.4.20-1.el6_5.cloudlinux.x86_64
sqlite-3.6.20-1.el6.x86_64
(gdb) bt
#0 0x00007ffb29b07580 in strcat () from /lib64/libc.so.6
#1 0x000000000050e5c3 in php_mail (to=0x55a61c8 "
subject=0x5670268
"=?windows-1251?B?ZXh0eWwtcHJvLnJ1OiDn4O/u6+3l7eAgd2ViLfTu8OzgIFsxMF0gSQ==?=
=?windows-1251?B?bnRyYW5ldCBMYW5kaW5nIFBhZ2UgVE9Q?=",
message=0x564d908 "best-web-design.best\n\n\307\340\357\356\353\355\345\355\340
web-\364\356\360\354\340: [10] Intranet Landing Page
TOP\n\n\302\340\370\345 \350\354\377\n", '*' <repeats 31 times>,
"\n\322\340\362\374\377\355\340\n\n\322\345\353\345\364\356\
\350\353\350 e-mail\n", '*' <repeats 31 times>,
"\
headers=0x413ab00 "From:
21898.206 (29.01.2015 02:08:17)\nX-EVENT_NAME:
FORM_FILLING_Extyl_PRO_Int"..., extra_cmd=0x0) at
/usr/include/bits/string3.h:144
#2 0x000000000050e981 in zif_mail (ht=<value optimized out>,
return_value=0x56734f8, return_value_ptr=<value optimized out>,
this_ptr=<value optimized out>,
return_value_used=<value optimized out> [Шутливо] at /usr/src/debug/php-5.3.3/ext/standard/mail.c:178
#3 0x00000000005f3bf8 in zend_do_fcall_common_helper_SPEC
(execute_data=<value optimized out> [Шутливо] at
/usr/src/debug/php-5.3.3/Zend/zend_vm_execute.h:316
#4 0x00000000005cad40 in execute (op_array=0x321f8e0) at /usr/src/debug/php-5.3.3/Zend/zend_vm_execute.h:107
#5 0x00000000005a4f5d in zend_execute_scripts (type=8, retval=0x0, file_count=3) at /usr/src/debug/php-5.3.3/Zend/zend.c:1235
#6 0x0000000000552fe8 in php_execute_script (primary_file=0x7fff02eb3b40) at /usr/src/debug/php-5.3.3/main/main.c:2268
#7 0x00000000006374c8 in main (argc=<value optimized out>,
argv=<value optimized out> [Шутливо] at
/usr/src/debug/php-5.3.3/sapi/fpm/fpm/fpm_main.c:1925