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http://issues.apache.org/bugzilla/show_bug.cgi?id=42888 Summary: Segmentation Faults when Apache processes try to restart Product: Apache httpd-2 Version: 2.0.59 Platform: Other OS/Version: Linux Status: NEW Severity: normal Priority: P2 Component: All AssignedTo: [email protected] ReportedBy: [EMAIL PROTECTED] Hi everyone! My team is having problems on a large production site at work. All days, it appears three or four core dumps. After studying some of them, it seems to us that there may be some kind of problem with Apache when its processes try to restart. We use a multi-thread implementation -using worker.c- When happening at work, the directive "MaxRequestPerChild" was set to "1000". The same behaviour could be reproduced in a development environment by setting the processes to be restarted just after having processed only 50 requests -by settintg the directive "MaxRequestPerChild" to "50". Latter, we changed "MaxRequestPerChild" to "10000" -10000 is the default Apache value for this directive-. Although it was not so often than before, from time to time this behaviour kept happening. Does anyone have any idea to explain this behaviour? In advance, thank you for your help! What follows are the datails of one of this core dumps. This is the environment: [EMAIL PROTECTED] apache_2.0.53_debug]$ uname -a Linux madarrcc33.indra.es 2.6.10-1.771_FC2smp #1 SMP Mon Mar 28 01:10:51 EST 2005 i686 i686 i386 GNU/Linux [EMAIL PROTECTED] bin]$ ./httpd -l Compiled in modules: core.c mod_access.c mod_auth.c mod_include.c mod_log_config.c mod_env.c mod_setenvif.c worker.c http_core.c mod_mime.c mod_status.c mod_autoindex.c mod_asis.c mod_cgid.c mod_negotiation.c mod_dir.c mod_imap.c mod_actions.c mod_userdir.c mod_alias.c mod_so.c And this is the gdb output when studying the controversial thread that produced the core dump: [...] Core was generated by `/aplicaciones/apache/SSAAapache/bin/httpd - f /aplicaciones/apache/http-intranet'. Program terminated with signal 11, Segmentation fault. Reading symbols from /etc/libcwait.so...done. Loaded symbols for /etc/libcwait.so Reading symbols from /lib/libssl.so.4...done. Loaded symbols for /lib/libssl.so.4 Reading symbols from /lib/libcrypto.so.4...done. Loaded symbols for /lib/libcrypto.so.4 Reading symbols from /usr/kerberos/lib/libgssapi_krb5.so.2...done. Loaded symbols for /usr/kerberos/lib/libgssapi_krb5.so.2 Reading symbols from /usr/kerberos/lib/libkrb5.so.3...done. Loaded symbols for /usr/kerberos/lib/libkrb5.so.3 Reading symbols from /usr/kerberos/lib/libcom_err.so.3...done. Loaded symbols for /usr/kerberos/lib/libcom_err.so.3 Reading symbols from /usr/kerberos/lib/libk5crypto.so.3...done. Loaded symbols for /usr/kerberos/lib/libk5crypto.so.3 Reading symbols from /lib/libresolv.so.2...done. [...] Loaded symbols for /lib/libgcc_s.so.1 #0 0x00e66ba1 in __read_nocancel () from /lib/tls/libpthread.so.0 (gdb) info threads [...] 5 process 32306 0x00e643ad in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/libpthread.so.0 4 process 32307 0x00e643ad in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/libpthread.so.0 3 process 32308 0x00e643ad in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/libpthread.so.0 2 process 32309 0x00e66d9e in accept () from /lib/tls/libpthread.so.0 * 1 process 32050 0x00e66ba1 in __read_nocancel () from /lib/tls/libpthread.so.0 (gdb) thread apply all where [...] Thread 1 (process 32050): #0 0x00e66ba1 in __read_nocancel () from /lib/tls/libpthread.so.0 #1 0x08069f69 in ap_mpm_pod_check (pod=0xfffffe00) at pod.c:54 #2 0x08068522 in child_main (child_num_arg=-512) at worker.c:1195 #3 0x08068702 in make_child (s=0x9574f00, slot=0) at worker.c:1278 #4 0x08068afb in perform_idle_server_maintenance () at worker.c:1480 #5 0x08068dbd in server_main_loop (remaining_children_to_start=0) at worker.c:1582 #6 0x08068fa0 in ap_mpm_run (_pconf=0x2, plog=0x959f158, s=0x9574f00) at worker.c:1684 #7 0x0806ebb2 in main (argc=5, argv=0xbfffadc4) at main.c:623 (gdb) thread apply all where full [...] Thread 1 (process 32050): #0 0x00e66ba1 in __read_nocancel () from /lib/tls/libpthread.so.0 No symbol table info available. #1 0x08069f69 in ap_mpm_pod_check (pod=0xfffffe00) at pod.c:54 c = 9 '\t' fd = 4 rc = -512 #2 0x08068522 in child_main (child_num_arg=-512) at worker.c:1195 threads = (apr_thread_t **) 0x95bdbe0 rv = 157055664 ts = (thread_starter *) 0x95c7b58 thread_attr = (apr_threadattr_t *) 0x95c7b68 start_thread_id = (apr_thread_t *) 0x95c7b98 #3 0x08068702 in make_child (s=0x9574f00, slot=0) at worker.c:1278 pid = 0 #4 0x08068afb in perform_idle_server_maintenance () at worker.c:1480 status = 1 any_dying_threads = 0 any_dead_threads = 0 all_dead_threads = 1 i = 0 j = -1073763581 idle_thread_count = 0 ps = (process_score *) 0xb751e050 free_length = 1 totally_free_length = 1 free_slots = {0, 0, 0, 0, 0, 0, 0, 0, 5698040, 1000000, 0, 5674655, 0, 0, 0, 0, -1073763280, 0, 1000000, 0, 0, 0, -1073763224, -1073763184, 0, 0, -1073763224, 134690625, 1000000, 0, 0, 256} last_non_dead = 3 total_non_dead = 4 active_thread_count = 58 #5 0x08068dbd in server_main_loop (remaining_children_to_start=0) at worker.c:1582 child_slot = 0 exitwhy = APR_PROC_EXIT status = 0 processed_status = 0 pid = {pid = -1, in = 0xbfffacc8, out = 0x0, err = 0x0} i = 256 #6 0x08068fa0 in ap_mpm_run (_pconf=0x2, plog=0x959f158, s=0x9574f00) at worker.c:1684 remaining_children_to_start = 2 rv = -512 #7 0x0806ebb2 in main (argc=5, argv=0xbfffadc4) at main.c:623 exit_status = 0 c = 102 'f' configtestonly = 0 confname = 0xbfffeb32 "/aplicaciones/apache/http- intranet/conf/httpd.conf" def_server_root = 0x808bff4 "/aplicaciones/apache/SSAAapache" temp_error_log = 0x0 process = (process_rec *) 0x9571120 server_conf = (server_rec *) 0x9574f00 pglobal = (apr_pool_t *) 0x95710a0 pconf = (apr_pool_t *) 0x95730a8 plog = (apr_pool_t *) 0x959f158 ptemp = (apr_pool_t *) 0x95c7ab0 pcommands = (apr_pool_t *) 0x95750b0 opt = (apr_getopt_t *) 0x9575148 rv = -512 mod = (module **) 0x9574f00 optarg = 0xbfffeb32 "/aplicaciones/apache/http-intranet/conf/httpd.conf" signal_server = (apr_OFN_ap_signal_server_t *) 0x1 -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
