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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 46785] New: Child process increases to 100% (CPU)
Date Mon, 02 Mar 2009 11:20:46 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=46785

           Summary: Child process increases to 100% (CPU)
           Product: Apache httpd-2
           Version: 2.2.3
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Event MPM
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: est-c-marinho@ptinovacao.pt


Using Apache 2.2.3 acting as a proxy, renamed here as wap2d, i'm getting some
process at 100% of CPU.

Some times it crashes at apr_brigade_cleanup () and others at
apr_bucket_destroy_noop () (see gdb backtrace bellow).

Other times i get a segmentation fault but the core dump file says the same.

I hope that someone can help.

Here is the gdb backtrace:

Reading symbols from /usr/lib/httpd/modules/ptin_proxy_wap2_profiles.so...done.
Loaded symbols for /etc/httpd/modules/ptin_proxy_wap2_profiles.so
Reading symbols from /usr/lib/httpd/modules/ptin_proxy_wap2_http.so...done.
Loaded symbols for /etc/httpd/modules/ptin_proxy_wap2_http.so
Reading symbols from /usr/lib/httpd/modules/mod_proxy_connect.so...done.
Loaded symbols for /etc/httpd/modules/mod_proxy_connect.so
Reading symbols from /usr/lib/httpd/modules/mod_charset_lite.so...done.
Loaded symbols for /etc/httpd/modules/mod_charset_lite.so
Reading symbols from /usr/lib/httpd/modules/mod_substitute.so...done.
Loaded symbols for /etc/httpd/modules/mod_substitute.so
Reading symbols from /lib/libnss_dns.so.2...done.
Loaded symbols for /lib/libnss_dns.so.2
0x00fe8140 in apr_bucket_destroy_noop ()
   from /usr/lib/libaprutil-1.so.0
(gdb) where
#0  0x00fe8140 in apr_bucket_destroy_noop () from /usr/lib/libaprutil-1.so.0
#1  0x00fe84ef in apr_brigade_cleanup () from /usr/lib/libaprutil-1.so.0
#2  0x00fe852d in apr_brigade_cleanup () from /usr/lib/libaprutil-1.so.0
#3  0x0033cc7d in apr_pool_cleanup_run () from /usr/lib/libapr-1.so.0
#4  0x0033d5c7 in apr_pool_clear () from /usr/lib/libapr-1.so.0
#5  0x00736714 in ap_graceful_stop_signalled () from /usr/sbin/wap2d
#6  0x00736bf1 in ap_graceful_stop_signalled () from /usr/sbin/wap2d
#7  0x00736cca in ap_graceful_stop_signalled () from /usr/sbin/wap2d
#8  0x0073782b in ap_mpm_run () from /usr/sbin/wap2d
#9  0x0070e127 in main () from /usr/sbin/wap2d
(gdb) up
#1  0x00fe84ef in apr_brigade_cleanup () from /usr/lib/libaprutil-1.so.0
(gdb) up
#2  0x00fe852d in apr_brigade_cleanup () from /usr/lib/libaprutil-1.so.0
(gdb) up
#3  0x0033cc7d in apr_pool_cleanup_run () from /usr/lib/libapr-1.so.0
(gdb) up
#4  0x0033d5c7 in apr_pool_clear () from /usr/lib/libapr-1.so.0
(gdb) up
#5  0x00736714 in ap_graceful_stop_signalled () from /usr/sbin/wap2d
(gdb) up
#6  0x00736bf1 in ap_graceful_stop_signalled () from /usr/sbin/wap2d
(gdb) up
#7  0x00736cca in ap_graceful_stop_signalled () from /usr/sbin/wap2d
(gdb) up
#8  0x0073782b in ap_mpm_run () from /usr/sbin/wap2d
(gdb) up
#9  0x0070e127 in main () from /usr/sbin/wap2d
(gdb) up




Here is my config:

wap2d -M
Loaded Modules:
 core_module (static)
 mpm_prefork_module (static)
 http_module (static)
 so_module (static)
 auth_basic_module (shared)
 auth_digest_module (shared)
 authn_file_module (shared)
 authn_alias_module (shared)
 authn_anon_module (shared)
 authn_dbm_module (shared)
 authn_default_module (shared)
 authz_host_module (shared)
 authz_user_module (shared)
 authz_owner_module (shared)
 authz_groupfile_module (shared)
 authz_dbm_module (shared)
 authz_default_module (shared)
 ldap_module (shared)
 authnz_ldap_module (shared)
 include_module (shared)
 log_config_module (shared)
 logio_module (shared)
 env_module (shared)
 ext_filter_module (shared)
 mime_magic_module (shared)
 expires_module (shared)
 deflate_module (shared)
 headers_module (shared)
 usertrack_module (shared)
 setenvif_module (shared)
 mime_module (shared)
 dav_module (shared)
 status_module (shared)
 autoindex_module (shared)
 info_module (shared)
 dav_fs_module (shared)
 vhost_alias_module (shared)
 negotiation_module (shared)
 dir_module (shared)
 actions_module (shared)
 speling_module (shared)
 userdir_module (shared)
 alias_module (shared)
 rewrite_module (shared)
 proxy_module (shared)
 proxy_balancer_module (shared)
 proxy_ftp_module (shared)
 proxy_http_module (shared)
 proxy_connect_module (shared)
 cache_module (shared)
 suexec_module (shared)
 disk_cache_module (shared)
 file_cache_module (shared)
 mem_cache_module (shared)
 cgi_module (shared)
 version_module (shared)
 proxy_ajp_module (shared)
 ssl_module (shared)

Regards,
Carlos Marinho

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