Description of problem: On some php script, php-fpm quit with segfault : [15-Jul-2014 17:18:22.821612] DEBUG: pid 3694, fpm_pctl_perform_idle_server_maintenance(), line 379: [pool www] currently 1 active children, 5 spare children, 6 running children. Spawning rate 1 [15-Jul-2014 17:18:23.473691] DEBUG: pid 3694, fpm_event_loop(), line 419: event module triggered 2 events [15-Jul-2014 17:18:23.474148] DEBUG: pid 3694, fpm_got_signal(), line 76: received SIGCHLD [15-Jul-2014 17:18:23.474221] WARNING: pid 3694, fpm_children_bury(), line 252: [pool www] child 3700 exited on signal 11 (SIGSEGV - core dumped) after 21.675400 seconds from start [15-Jul-2014 17:18:23.475131] NOTICE: pid 3694, fpm_children_make(), line 421: [pool www] child 3790 started Version-Release number of selected component (if applicable): nginx.x86_64 1:1.4.7-1.fc20 @updates php-channel-phpseclib.noarch 1.3-1.fc20 @updates php-cli.x86_64 5.5.14-1.fc20 @updates php-common.x86_64 5.5.14-1.fc20 @updates php-debuginfo.x86_64 5.5.14-1.fc20 @updates-debuginfo php-fpm.x86_64 5.5.14-1.fc20 @updates php-mbstring.x86_64 5.5.14-1.fc20 @updates php-mcrypt.x86_64 5.5.14-1.fc20 @updates php-mysqlnd.x86_64 5.5.14-1.fc20 @updates php-pdo.x86_64 5.5.14-1.fc20 @updates php-pear.noarch 1:1.9.4-29.fc20 @updates php-pecl-geoip.x86_64 1.0.8-6.fc20 @fedora php-pecl-geoip-debuginfo.x86_64 1.0.8-6.fc20 @fedora-debuginfo @fedora @fedora-debuginfo php-pecl-jsonc.x86_64 1.3.3-1.fc20 @updates php-pecl-jsonc-debuginfo.x86_64 1.3.3-1.fc20 @updates-debuginfo php-pecl-redis.x86_64 2.2.5-1.fc20 @updates php-pecl-redis-debuginfo.x86_64 2.2.5-1.fc20 @updates-debuginfo php-pecl-ssh2.x86_64 0.12-2.fc20 @fedora php-pecl-ssh2-debuginfo.x86_64 0.12-2.fc20 @fedora-debuginfo php-phpseclib-crypt-aes.noarch 0.3.5-2.fc20 @updates php-phpseclib-crypt-blowfish.noarch 0.3.5-4.fc20 @updates php-phpseclib-crypt-des.noarch 0.3.5-3.fc20 @updates php-phpseclib-crypt-hash.noarch 0.3.5-2.fc20 @updates php-phpseclib-crypt-random.noarch 0.3.5-2.fc20 @updates php-phpseclib-crypt-rc4.noarch 0.3.5-2.fc20 @updates php-phpseclib-crypt-rijndael.noarch 0.3.5-2.fc20 @updates php-phpseclib-crypt-tripledes.noarch 0.3.5-3.fc20 @updates php-phpseclib-crypt-twofish.noarch 0.3.5-3.fc20 @updates php-phpseclib-math-biginteger.noarch 0.3.5-2.fc20 @updates php-phpseclib-net-ssh2.noarch 0.3.5-3.fc20 @updates php-process.x86_64 5.5.14-1.fc20 @updates php-xml.x86_64 5.5.14-1.fc20 @updates How reproducible: Reload the page. Actual results: 502 Bad Gateway on nginx. Segfault alert in system log. kernel: [ 597.881548] php-fpm[3703]: segfault at 41 ip 00007f997e6aa7ca sp 00007fffd4d59990 error 4 in php-fpm[7f997e49b000+3a1000] kernel: php-fpm[3703]: segfault at 41 ip 00007f997e6aa7ca sp 00007fffd4d59990 error 4 in php-fpm[7f997e49b000+3a1000] Additional info: Backtrace : #0 _zend_mm_alloc_int (heap=0x7fc688839330, size=32) at /usr/src/debug/php-5.5.14/Zend/zend_alloc.c:1910 #1 0x00007fc686841fb3 in php_formatted_print (ht=<optimized out>, len=len@entry=0x7fff45dfc144, use_array=use_array@entry=0, format_offset=format_offset@entry=0) at /usr/src/debug/php-5.5.14/ext/standard/formatted_print.c:548 #2 0x00007fc686843926 in zif_user_sprintf (ht=<optimized out>, return_value=0x7fc68ffcbc40, return_value_ptr=<optimized out>, this_ptr=<optimized out>, return_value_used=<optimized out>) at /usr/src/debug/php-5.5.14/ext/standard/formatted_print.c:673 #3 0x00007fc6868e1e7b in dtrace_execute_internal (execute_data_ptr=<optimized out>, fci=<optimized out>, return_value_used=<optimized out>) at /usr/src/debug/php-5.5.14/Zend/zend_dtrace.c:97 #4 0x00007fc6869a5d95 in zend_do_fcall_common_helper_SPEC (execute_data=<optimized out>) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:552 #5 0x00007fc68691e7b8 in execute_ex (execute_data=0x7fc68665f2a0) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:363 #6 0x00007fc6868e1d59 in dtrace_execute_ex (execute_data=<optimized out>) at /usr/src/debug/php-5.5.14/Zend/zend_dtrace.c:73 #7 0x00007fc6869a640d in zend_do_fcall_common_helper_SPEC (execute_data=0x7fc68665f120) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:584 #8 0x00007fc68691e7b8 in execute_ex (execute_data=0x7fc68665f120) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:363 #9 0x00007fc6868e1d59 in dtrace_execute_ex (execute_data=<optimized out>) at /usr/src/debug/php-5.5.14/Zend/zend_dtrace.c:73 #10 0x00007fc6869a640d in zend_do_fcall_common_helper_SPEC (execute_data=0x7fc68665efa0) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:584 #11 0x00007fc68691e7b8 in execute_ex (execute_data=0x7fc68665efa0) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:363 #12 0x00007fc6868e1d59 in dtrace_execute_ex (execute_data=<optimized out>) at /usr/src/debug/php-5.5.14/Zend/zend_dtrace.c:73 #13 0x00007fc6869a640d in zend_do_fcall_common_helper_SPEC (execute_data=0x7fc68665ec20) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:584 #14 0x00007fc68691e7b8 in execute_ex (execute_data=0x7fc68665ec20) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:363 #15 0x00007fc6868e1d59 in dtrace_execute_ex (execute_data=<optimized out>) at /usr/src/debug/php-5.5.14/Zend/zend_dtrace.c:73 #16 0x00007fc6869a640d in zend_do_fcall_common_helper_SPEC (execute_data=0x7fc68665e950) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:584 #17 0x00007fc68691e7b8 in execute_ex (execute_data=0x7fc68665e950) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:363 #18 0x00007fc6868e1d59 in dtrace_execute_ex (execute_data=<optimized out>) at /usr/src/debug/php-5.5.14/Zend/zend_dtrace.c:73 #19 0x00007fc6869a640d in zend_do_fcall_common_helper_SPEC (execute_data=0x7fc68665e510) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:584 #20 0x00007fc68691e7b8 in execute_ex (execute_data=0x7fc68665e510) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:363 #21 0x00007fc6868e1d59 in dtrace_execute_ex (execute_data=<optimized out>) at /usr/src/debug/php-5.5.14/Zend/zend_dtrace.c:73 #22 0x00007fc6869a640d in zend_do_fcall_common_helper_SPEC (execute_data=0x7fc68665de48) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:584 #23 0x00007fc68691e7b8 in execute_ex (execute_data=0x7fc68665de48) at /usr/src/debug/php-5.5.14/Zend/zend_vm_execute.h:363 #24 0x00007fc6868e1d59 in dtrace_execute_ex (execute_data=<optimized out>) at /usr/src/debug/php-5.5.14/Zend/zend_dtrace.c:73 #25 0x00007fc6868e4161 in zend_call_function (fci=fci@entry=0x7fff45dfcdb0, fci_cache=<optimized out>, fci_cache@entry=0x7fff45dfcd80)
Created attachment 918199 [details] backtrace
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
The same segfault occurs with last remi repository packages. php-channel-phpseclib.noarch 1.3-1.fc20.remi @remi php-cli.x86_64 5.5.14-1.fc20.remi @remi php-common.x86_64 5.5.14-1.fc20.remi @remi php-fpm.x86_64 5.5.14-1.fc20.remi @remi php-mbstring.x86_64 5.5.14-1.fc20.remi @remi php-mcrypt.x86_64 5.5.14-1.fc20.remi @remi php-mysqlnd.x86_64 5.5.14-1.fc20.remi @remi php-pdo.x86_64 5.5.14-1.fc20.remi @remi php-pear.noarch 1:1.9.5-1.fc20.remi @remi php-phpseclib-crypt-aes.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-crypt-base.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-crypt-blowfish.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-crypt-des.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-crypt-hash.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-crypt-random.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-crypt-rc4.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-crypt-rijndael.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-crypt-tripledes.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-crypt-twofish.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-math-biginteger.noarch 0.3.7-1.fc20.remi @remi php-phpseclib-net-ssh2.noarch 0.3.7-1.fc20.remi @remi php-process.x86_64 5.5.14-1.fc20.remi @remi php-xml.x86_64 5.5.14-1.fc20.remi @remi
Are you able to provider a reproducer ?
Unfortunately, I can't provide a reproducer. The problem occurs on a big Symfony project. But the same project works perfectly on a Debian production server (and on a Linux Mint workstation), with exactly the same version of php.
I experienced an httpd segfault issue after updating to GeoIP-1.5.1 (epel6), which was released 2014-07-12. Perhaps this is related.
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