Re: Having problem with mod_WebObjects.so under redhat 8
Re: Having problem with mod_WebObjects.so under redhat 8
- Subject: Re: Having problem with mod_WebObjects.so under redhat 8
- From: Michael Kondratov via Webobjects-dev <email@hidden>
- Date: Wed, 1 Feb 2023 00:16:25 -0500
Please see https://httpd.apache.org/docs/2.4/mod/prefork.html
You are running Worker MPM (multi threaded mode). It is not compatible with WO
Adapter.
Michael
> On Feb 1, 2023, at 12:13 AM, Khodor Barakat <email@hidden> wrote:
>
> I don’t see that module in my loaded modules nor on the system under
> /etc/httpd/modules
>
> if this is not what you are asking how do I check that ??
>
> my problem started after I did in place upgrade from redhat 7 to redhat 8, I
> still have some systems running redhat7 and WO setup is working fine
>
>
> httpd -M <>
> Loaded Modules:
> core_module (static)
> so_module (static)
> http_module (static)
> access_compat_module (shared)
> actions_module (shared)
> alias_module (shared)
> allowmethods_module (shared)
> auth_basic_module (shared)
> auth_digest_module (shared)
> authn_anon_module (shared)
> authn_core_module (shared)
> authn_dbd_module (shared)
> authn_dbm_module (shared)
> authn_file_module (shared)
> authn_socache_module (shared)
> authz_core_module (shared)
> authz_dbd_module (shared)
> authz_dbm_module (shared)
> authz_groupfile_module (shared)
> authz_host_module (shared)
> authz_owner_module (shared)
> authz_user_module (shared)
> autoindex_module (shared)
> brotli_module (shared)
> cache_module (shared)
> cache_disk_module (shared)
> cache_socache_module (shared)
> data_module (shared)
> dbd_module (shared)
> deflate_module (shared)
> dir_module (shared)
> dumpio_module (shared)
> echo_module (shared)
> env_module (shared)
> expires_module (shared)
> ext_filter_module (shared)
> filter_module (shared)
> headers_module (shared)
> include_module (shared)
> info_module (shared)
> log_config_module (shared)
> logio_module (shared)
> macro_module (shared)
> mime_magic_module (shared)
> mime_module (shared)
> negotiation_module (shared)
> remoteip_module (shared)
> reqtimeout_module (shared)
> request_module (shared)
> rewrite_module (shared)
> setenvif_module (shared)
> slotmem_plain_module (shared)
> slotmem_shm_module (shared)
> socache_dbm_module (shared)
> socache_memcache_module (shared)
> socache_shmcb_module (shared)
> status_module (shared)
> substitute_module (shared)
> suexec_module (shared)
> unique_id_module (shared)
> unixd_module (shared)
> userdir_module (shared)
> version_module (shared)
> vhost_alias_module (shared)
> watchdog_module (shared)
> dav_module (shared)
> dav_fs_module (shared)
> dav_lock_module (shared)
> lua_module (shared)
> mpm_event_module (shared)
> proxy_module (shared)
> lbmethod_bybusyness_module (shared)
> lbmethod_byrequests_module (shared)
> lbmethod_bytraffic_module (shared)
> lbmethod_heartbeat_module (shared)
> proxy_ajp_module (shared)
> proxy_balancer_module (shared)
> proxy_connect_module (shared)
> proxy_express_module (shared)
> proxy_fcgi_module (shared)
> proxy_fdpass_module (shared)
> proxy_ftp_module (shared)
> proxy_http_module (shared)
> proxy_hcheck_module (shared)
> proxy_scgi_module (shared)
> proxy_uwsgi_module (shared)
> proxy_wstunnel_module (shared)
> ssl_module (shared)
> systemd_module (shared)
> WebObjects_module (shared)
> cgid_module (shared)
> fcgid_module (shared)
> http2_module (shared)
> maxminddb_module (shared)
> proxy_http2_module (shared)
>
>
> From: Michael Kondratov [mailto:email@hidden]
> Sent: Wednesday, February 1, 2023 12:09 AM
> To: Khodor Barakat <email@hidden
> <mailto:email@hidden>>
> Cc: email@hidden <mailto:email@hidden>
> Subject: Re: Having problem with mod_WebObjects.so under redhat 8
> Importance: High
>
> Khodor,
>
> I’ve had apache crashes when it was running in multi threaded
> form. Are you using pre-fork module?
>
>
> Michael
>
>
>
> On Feb 1, 2023, at 12:06 AM, Khodor Barakat via Webobjects-dev
> <email@hidden <mailto:email@hidden>>
> wrote:
>
> I have migrated my system from redhat 7 to redhat 8
>
> and I am having a problem with webobjects , after opening a ticket with
> redhat support , the support reported a back trace the is causing apache to
> hang and throw segmentation fault 11
>
> [pid 37869:tid 140365337980352] AH00051: child pid 37874 exit signal
> Segmentation fault (11), possible coredump in /var/apache-dump
>
> redhat support mentioned that the issue is related to WO module
> mod_WebObjects.so, did anyone have this issue before ,
>
>
> { "signal": 11
> , "executable": "/usr/sbin/httpd"
> , "stacktrace":
> [ { "crash_thread": true
> , "frames":
> [ { "address": 140365077741264
> , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541"
> , "build_id_offset": 44752
> , "function_name": "WOShmem_lock"
> , "file_name": "/etc/httpd/modules/mod_WebObjects.so"
> }
> , { "address": 140365077743499
> , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541"
> , "build_id_offset": 46987
> , "function_name": "sha_lock"
> , "file_name": "/etc/httpd/modules/mod_WebObjects.so"
> }
> , { "address": 140365077765643
> , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541"
> , "build_id_offset": 69131
> , "function_name": "ac_findInstance"
> , "file_name": "/etc/httpd/modules/mod_WebObjects.so"
> }
> , { "address": 140365077732822
> , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541"
> , "build_id_offset": 36310
> , "function_name": "tr_handleRequest"
> , "file_name": "/etc/httpd/modules/mod_WebObjects.so"
> }
> , { "address": 140365077783061
> , "build_id": "a77df8e8eef4029a804d7b883776cc12618b3541"
> , "build_id_offset": 86549
> , "function_name": "WebObjects_handler"
> , "file_name": "/etc/httpd/modules/mod_WebObjects.so"
> }
> , { "address": 94650830766376
> , "build_id": "4f04e7d6189e2c9aa5c51e159c08329a7b3078e3"
> , "build_id_offset": 299304
> , "function_name": "ap_run_handler"
> , "file_name": "/usr/sbin/httpd"
> }
> , { "address": 94650830767846
> , "build_id": "4f04e7d6189e2c9aa5c51e159c08329a7b3078e3"
> , "build_id_offset": 300774
>
> I am on redhat 8.7
> Apache/2.4.37 (Red Hat Enterprise Linux)
> woadaptor : woadaptor-httpd24-6-1.x86_64
>
> mod_WebObjects.so: ELF 64-bit LSB shared object, x86-64, version 1
> (SYSV), dynamically linked,
> BuildID[sha1]=a77df8e8eef4029a804d7b883776cc12618b3541, with debug_info, not
> stripped
>
> any help is highly appreciated
>
> Thanks,
>
>
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