exit signal Bus error (7)

[rvbalraj]

HI All,

We have been dedicated server. In that the following error has been creating Its making severe issue Please help me to resolve this issue.

#grep 'exit signal Bus' error_log

[Wed Jul 16 21:18:45 2008] [notice] child pid 19433 exit signal Bus error (7)
[Wed Jul 16 22:12:56 2008] [notice] child pid 22194 exit signal Bus error (7)
[Wed Jul 16 23:08:53 2008] [notice] child pid 31096 exit signal Bus error (7)
[Wed Jul 16 23:30:29 2008] [notice] child pid 1139 exit signal Bus error (7)
[Thu Jul 17 00:09:58 2008] [notice] child pid 3336 exit signal Bus error (7)
[Thu Jul 17 00:28:03 2008] [notice] child pid 6256 exit signal Bus error (7)
[Thu Jul 17 00:53:55 2008] [notice] child pid 7459 exit signal Bus error (7)


Memory and Hardware test passed (DC people checked). Reload RHEL4 OS with 64 bit.

Server Details:
CPU : Intel(R) Xeon(R) CPU X3210 @ 2.13GHz (4 CPU)
CPU MHz: 2133.413

RAM : 4 GB
Apache : 2.0 (Previously tested with 2.2.9)
PHP : 5.2.5
MySQL : 5.0.1 (Running separate box)


Current Apache 2.0 Settings:

KeepAlive On
MaxKeepAliveRequests 0
KeepAliveTimeout 5
UseCanonicalName Off
<IfModule prefork.c>
StartServers 5
MinSpareServers 5
MaxSpareServers 10
ServerLimit 2000
MaxClients 2000
MaxRequestsPerChild 0
</IfModule>

Previous Apache Settings:
(Tried with below apache settings on that time also the signal bus error created )

Apache 2.2.9 with eAccelerator compailed.

KeepAlive Off
MaxKeepAliveRequests 50
KeepAliveTimeout 10
UseCanonicalName Off
<IfModule prefork.c>
StartServers 16
MinSpareServers 8
MaxSpareServers 64
ServerLimit 500
MaxClients 500
MaxRequestsPerChild 10000
</IfModule>

Compiled in modules:
core.c
mod_access.c
mod_auth.c
mod_include.c
mod_log_config.c
mod_logio.c
mod_env.c
mod_expires.c
mod_headers.c
mod_unique_id.c
mod_setenvif.c
mod_proxy.c
proxy_connect.c
proxy_ftp.c
proxy_http.c
mod_ssl.c
prefork.c
http_core.c
mod_mime.c
mod_status.c
mod_autoindex.c
mod_asis.c
mod_info.c
mod_suexec.c
mod_cgi.c
mod_negotiation.c
mod_dir.c
mod_imap.c
mod_actions.c
mod_userdir.c
mod_alias.c
mod_rewrite.c
mod_so.c

Apache Server compiled with....
-D APACHE_MPM_DIR="server/mpm/prefork"
-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 HTTPD_ROOT="/usr/local/apache"
-D SUEXEC_BIN="/usr/local/apache/bin/suexec"
-D DEFAULT_PIDLOG="logs/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_LOCKFILE="logs/accept.lock"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"

Running single website with drupal based flash arcade website. Per day 2500 visitors and 150 users online normally.

I am almost 3 weeks to resolve this issue. Please help me to resolve this..

Reply With Quote

[Infopro]

Disable that site for an hour if you can (since its only one site) and check your logs, are you still seeing that error? If no, there's an issue with the site. You might check your site plugins and addons for problems by disabling those one by one as well.

[rvbalraj]

Disable that site for an hour if you can (since its only one site) and check your logs, are you still seeing that error? If no, there's an issue with the site. You might check your site plugins and addons for problems by disabling those one by one as well.

I have disabled the website for one hour on that there is no signal bus error has created. Please suggest me what are the other things need to be check it.

[koolcards]

I copied this from another older thread on another site. The 2nd error mentioned was a "SIGTERM":

The first error "Bus Error" is caused by someones (possibly CGI) program crashing. A bus error happens when someone wrote a C program for Intel and re-compiled it for another processor like PPC or Mips that does not support misalligned memory access. Really all it means is someone is running buggy software on your server machine.
The second error could also be a CGI program that hangs longer than the server's timeout, so its killed. Probably another buggy program.