I'm getting some very very annoying sigfaults on my apache installation, it's only recently started. Any ideas could be great.. I've followed this http://sysadmin.carlusgg.com/?p=197 but i'm not getting any core-dumps for some reason.. Code: # apachectl -V Server version: Apache/2.4.10 (Debian) Server built: Nov 28 2015 14:05:48 Server's Module Magic Number: 20120211:37 Server loaded: APR 1.5.1, APR-UTIL 1.5.4 Compiled using: APR 1.5.1, APR-UTIL 1.5.4 Architecture: 64-bit Server MPM: prefork threaded: no forked: yes (variable process count) Server compiled with.... -D APR_HAS_SENDFILE -D APR_HAS_MMAP -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled) -D APR_USE_SYSVSEM_SERIALIZE -D APR_USE_PTHREAD_SERIALIZE -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT -D APR_HAS_OTHER_CHILD -D AP_HAVE_RELIABLE_PIPED_LOGS -D DYNAMIC_MODULE_LIMIT=256 -D HTTPD_ROOT="/etc/apache2" -D SUEXEC_BIN="/usr/lib/apache2/suexec" -D DEFAULT_PIDLOG="/var/run/apache2.pid" -D DEFAULT_SCOREBOARD="logs/apache_runtime_status" -D DEFAULT_ERRORLOG="logs/error_log" -D AP_TYPES_CONFIG_FILE="mime.types" -D SERVER_CONFIG_FILE="apache2.conf"
I've just been poking around my logs and i can see Code: Feb 9 12:39:47 celeste kernel: conftest[11319]: segfault at 0 ip 0000000000400730 sp 00007fff5034d540 error 4 in conftest[400000+1000] Feb 9 12:39:47 celeste kernel: conftest[11342]: segfault at 0 ip 00007f7ef0dd0e6a sp 00007fffceb54ca8 error 4 in libc-2.19.so[7f7ef0d3f000+1a2000] Any ideas?
You may need to chown your coredump directory to www-data and since the process has been started by root you might need to adjust sysctl like that: sysctl fs.suid_dumpable=2 After that you should be able to get coredumps you can analyze with gdb apache2 -core /tmp/apache-coredumps/COREFILE
