Segmentation Fault (core Dumped)

Oct 22, 2007

We are having major problems on one of our servers.

We were running general commands like 'grep' and then this error message came up:

[root@~]# cat /etc/userdomains | grep test
Segmentation fault (core dumped)
[root@~]#

Then it went down and has not come back up online.

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Apache :: Segmentation Fault - Core Dumped

May 28, 2013

I recently build an apache server in Solaris10 SRAC server and enabled the following modules.

LoadModule foo_module modules/mod_foo.so
LoadModule jk_module modules/mod_jk.so
LoadModule weblogic_module modules/mod_wl_22.so
LoadModule rewrite_module modules/mod_rewrite.so
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_http_module modules/mod_proxy_http.so
LoadFile "/usr/lib/libxml2.so"
LoadModule xml2enc_module modules/mod_xml2enc.so
LoadModule proxy_html_module modules/mod_proxy_html.so

Post that I tried a simple Reverse Proxy setup to confirm the apache work fine as a reverse proxy

### Proxy Setup ####

ProxyVia On
ProxyPass /console http://<apps-host>:8980/console

<Location /console>
ProxyPassReverse http://<apps-host>:8980/console
</Location>

Post these changes when I try starting apache I get the error - Segmentation Fault - core dumped

Checked the Error Logs it shows -

[Mon May 27 14:09:24 2013] [notice] child pid 29964 exit signal Segmentation fault (11)
[Mon May 27 14:09:32 2013] [notice] child pid 29963 exit signal Segmentation fault (11)
[Mon May 27 14:11:14 2013] [notice] caught SIGTERM, shutting down
[Mon May 27 14:11:19 2013] [warn] RSA server certificate CommonName (CN) `BUNTY RAY' does NOT match server name!?
[Mon May 27 14:11:19 2013] [warn] No JkLogFile defined in httpd.conf. Using default /opt/apache-2.2.24/logs/mod_jk.log

[code]....

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Segmentation Fault: What Does It Mean

Jun 29, 2009

root@server [/usr/bin]# ffmpeg -i DSCN0377.avi -vcodec libx264 -b 2048k -bt 2048k -acodec libfaac -ab 128k -f mp4 TEST1.mp4

FFmpeg version SVN-r19290, Copyright (c) 2000-2009 Fabrice Bellard, et al.
configuration: --enable-libmp3lame --enable-libvorbis --enable-shared --enable-libx264 --enable-libxvid --enable-libfaac --enable-libfaad --enable-gpl --enable-nonfree --enable-pthreads
libavutil 50. 3. 0 / 50. 3. 0
libavcodec 52.32. 0 / 52.32. 0
libavformat 52.36. 0 / 52.36. 0
libavdevice 52. 2. 0 / 52. 2. 0
libswscale 0. 7. 1 / 0. 7. 1
built on Jun 29 2009 20:47:56, gcc: 4.1.2 20080704 (Red Hat 4.1.2-44)
Input #0, avi, from 'DSCN0377.avi': ....

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Segmentation Fault

Sep 10, 2009

This is regarding WHMCS

Suddenly POP piping stopped working. When I try to execute it manually from bash I get,

root@gui3 [/home/intranet/public_html]# php -q /home/intranet/public_html/pipe/pop.php
<b>POP Import Log</b><br>Date: 10/09/2009 09:52:00<hr>Host: mail.***********.br<br>Email: suporte@***********.br<br>Email Count: 845<hr>Segmentation fault
root@gui3 [/home/intranet/public_html]#

Ive tried to recompile PHP and updated it to the latest PHP cPanel version (5.2.10). But the error is the same.

Ive contacted WHMCS support and they only told me to recompile PHP.

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Segmentation Fault .....

Nov 9, 2009

Something just went wrong with my server today

login as: teddy
password: xxxxxxxx
[teddy@server1 ~]$ sudo su -
Segmentation fault
[teddy@server1 ~]$ df
Bus error
[teddy@server1 ~]$ crontab -l
Segmentation fault

My website seems to be showing me lots of PHP & SQL errors.

For example, my live-chat shows me:

Warning: session_start() [function.session-start]: open(/tmp/sess_8aa74272d583973018e8f0805a796df2, O_RDWR) failed: Read-only file system (30) in /home/polar/domains/.../auth.php on line 20

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Segmentation Fault

May 20, 2007

I'm getting this error message when logwatch run,
--------------------- Kernel Begin ------------------------

WARNING: Segmentation Faults in these executables
httpd : 9 Time(s)

---------------------- Kernel End ------------------------- "

Have recompile apache twice, but it doesn't help.

I'm running this,
root@host [~]# php -v
PHP 4.4.6 (cli) (built: May 15 2007 12:54:50)
Copyright (c) 1997-2007 The PHP Group
Zend Engine v1.3.0, Copyright (c) 1998-2004 Zend Technologies
with Zend Extension Manager v1.0.10, Copyright (c) 2003-2006, by Zend Technologies
with Zend Optimizer v3.0.1, Copyright (c) 1998-2006, by Zend Technologies

and this is my server,
Processor: Dual Xeon E5310 Quad Core (Clovertown)
Memory: 4GB DDR Registered ECC
Hd1: Dual 73GB SCSI / Hardware Raid 1

I have had this segmentation problem since the first day I got my server.
Need advice what to do about this?

Friend of mine was talking about upgrade to php version 5, but I'm not sure thats the way to do it. Having about 40 accounts/domains and I'm not sure that web sites will work with php 5.

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Named Down, Segmentation Fault

Jun 27, 2008

-bash-3.00# service named restart
Stopping named: [ OK ]
Starting named: /etc/init.d/named: line 46: 14206 Segmentation fault

Using Plesk 8 on a vps / linux

/var/log/messages shows no errors but zones loaded after vps reboot.

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Xcache Problem, Segmentation Fault

May 11, 2009

Trying to enable xcache on my cpanel, centos server (suphp *not* enabled)

Followed this guideline
[url]

Xcache shows up in php -m output, however I get this output as well

Code:
root@server [/tmp]# php -v
PHP 5.2.8 (cli) (built: Jan 5 2009 16:23:03)
Copyright (c) 1997-2008 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2008 Zend Technologies
with the ionCube PHP Loader v3.1.34, Copyright (c) 2002-2009, by ionCube Ltd., and
with Zend Extension Manager v1.2.2, Copyright (c) 2003-2007, by Zend Technologies
with Zend Optimizer v3.3.3, Copyright (c) 1998-2007, by Zend Technologies
Segmentation fault (core dumped)
In the /usr/local/lib/php.ini file I had this portion setup before the Zend portion...

Code:
[xcache-common]

extension = xcache.so

[xcache.admin]
xcache.admin.auth = On
xcache.admin.user = ""
xcache.admin.pass = ""

[xcache]
; ini only settings, all the values here is default unless explained

; select low level shm/allocator scheme implemenation
xcache.shm_scheme = "mmap"

; to disable: xcache.size=0
; to enable : xcache.size=64M etc (any size > 0) and your system mmap allows
xcache.size = 128M

; set to cpu count (cat /proc/cpuinfo |grep -c processor)
xcache.count = 4

; just a hash hints, you can always store count(items) > slots
xcache.slots = 8K

; ttl of the cache item, 0=forever
xcache.ttl = 0

; interval of gc scanning expired items, 0=no scan, other values is in seconds
xcache.gc_interval = 0

; same as aboves but for variable cache
xcache.var_size = 0M
xcache.var_count = 1
xcache.var_slots = 8K
; default ttl
xcache.var_ttl = 0
xcache.var_maxttl = 0
xcache.var_gc_interval = 300

xcache.test = Off
; N/A for /dev/zero
xcache.readonly_protection = Off
; for *nix, xcache.mmap_path is a file path, not directory.
; Use something like "/tmp/xcache" if you want to turn on ReadonlyProtection
; 2 group of php won't share the same /tmp/xcache
; for win32, xcache.mmap_path=anonymous map name, not file path
xcache.mmap_path = "/dev/zero"

; leave it blank(disabled) or "/tmp/phpcore/"
; make sure it's writable by php (without checking open_basedir)
xcache.coredump_directory = ""

; per request settings
xcache.cacher = On
xcache.stat = On
xcache.optimizer = Off

[xcache.coverager]
; per request settings
; enable coverage data collecting for xcache.coveragedump_directory and xcache_coverager_start/stop/get/clean() functions (will hurt executing performance)
xcache.coverager = Off

; ini only settings
; make sure it's readable (care open_basedir) by coverage viewer script
; requires xcache.coverager=On
xcache.coveragedump_directory = ""

[Zend]

zend_extension_manager.optimizer=/usr/local/Zend/lib/Optimizer-3.3.3
zend_extension_manager.optimizer_ts=/usr/local/Zend/lib/Optimizer_TS-3.3.3
zend_optimizer.version=3.3.3

extension=pdo.so
extension=pdo_sqlite.so
extension=sqlite.so
extension=pdo_mysql.so

allow_url_include = On

; Memcache Section
extension = memcache.so
memcache.allow_failover = 0
When I search for "zend_extension" this is the result:

Code:
; Directory in which the loadable extensions (modules) reside.
extension_dir = "/usr/local/lib/php/extensions/no-debug-non-zts-20060613"
zend_extension="/usr/local/IonCube/ioncube_loader_lin_5.2.so"
zend_extension_ts="/usr/local/IonCube/ioncube_loader_lin_5.2_ts.so"
zend_extension="/usr/local/lib/php/extensions/no-debug-non-zts-20060613/xcache.so"
If I move the xcache line to the first line, before the ioncube one, I get this error:

root@server [/usr/local/lib/php/extensions/no-debug-non-zts-20060613]# php -m
Segmentation fault (core dumped)

Quote:

root@server [/usr/local/lib/php/extensions/no-debug-non-zts-20060613]# ls -lh
total 290M
drwxr-xr-x 2 root root 4.0K May 11 11:48 ./
drwxr-xr-x 5 root root 4.0K Sep 17 2007 ../
-rw------- 1 root root 144M May 11 11:48 core.9588
-rw------- 1 root root 144M May 11 11:48 core.9592
-rwxr-xr-x 1 root root 495K Jan 5 16:34 eaccelerator.so*
-rw-r--r-- 1 root root 3.1K Jan 5 22:04 error_log
-rwxr-xr-x 1 root root 142K Sep 17 2007 mailparse.so*
-rwxr-xr-x 1 root root 313K Jan 5 20:43 memcache.so*
-rwxr-xr-x 1 root root 124K Jan 5 16:23 pdo_mysql.so*
-rwxr-xr-x 1 root root 265K Jan 5 16:23 pdo.so*
-rwxr-xr-x 1 root root 1.4M Jan 5 16:23 pdo_sqlite.so*
-rwxr-xr-x 1 root root 989K Jan 5 16:23 sqlite.so*
-rwxr-xr-x 1 root root 323K May 11 11:31 xcache.so*

My config:

PHP 5.2.8
Zend Opt 3.3.3
suphp disabled
Apache 2.2

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Unix/Linux Ffmpeg Segmentation Fault

Sep 5, 2008

I'm transcoding videos on a web server using ffmpeg and can successfully transcode some video formats but am having a few issues.

One of them is that I get a "Segmentation Fault" when trying to transcode a video in h.264 codec. I can't find much by searching and am wondering if that's a codec issue, or something else.

any experience with ffmpeg?

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Kernel Segmentation Fault And Strange File Caching

May 31, 2009

we have little problem on our server - from some time it starts reporting some errors:

kernel: spamd[6479]: segfault at 9a16000 ip 467840ac sp bffe9b5c error 6 in libc-2.5.so[46713000+13e000]
kernel: webalizer[12318]: segfault at 81a80cc ip 080d9279 sp bff2f230 error 4 in webalizer[8048000+b2000]
kernel: spamd[6515]: segfault at 9cbb000 ip 467840ac sp bffe9b5c error 6 in libc-2.5.so[46713000+13e000]
kernel: pure-quotacheck[16285]: segfault at bf3c9ff8 ip 46769d76 sp bf3c9fec error 6 in libc-2.5.so[46713000+13e000]
kernel: php[14910]: segfault at bf727da0 ip 080b0edc sp bf727d30 error 6 in php[8048000+64d000]

errors appear 2-3 times every 10min and always in this 4 programs: webalizer, php, spamd, pure-quotacheck

and second thing there is problem with some file caching or sth - for example when we restarts named it reports:

/etc/named.conf:23564: open: /var/named/slaves/slaves.named.conf: file not found

file of course exist but funniest thing is when we remove this line from named.conf and tries restart it, error appear again, even when this line is empty in named.conf and there is no other include of this file
even after server restart (without this include in named.conf) it still reports this error

server config: C2Q Q9550, 8GB ram, 2x500GB in hw Raid1, Centos 5.3 32bit, cPanel
maybe someone have any idea what it could be, and what else we can check ?

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How to diagnose?

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just now I perform a sar -B on my dedicated server, memory usage and server load is below, but here is the output I have after perform a sar -B

I dont quite undestand the stat given, what is the fault/s means ? Is it my system having memory issue ?

Linux 2.6.9-55.EL s06/24/2007

12:00:01 AM pgpgin/s pgpgout/s fault/s majflt/s
12:10:01 AM 0.00 13.43 12322.04 0.00
12:20:01 AM 0.00 5.88 486.10 0.00
12:30:01 AM 0.00 3.07 65.81 0.00
12:40:01 AM 0.00 5.30 410.52 0.00
12:50:01 AM 0.00 5.67 413.37 0.00
01:00:01 AM 0.00 3.55 52.48 0.00
01:10:01 AM 0.00 6.36 408.92 0.00
01:20:01 AM 0.00 7.90 561.89 0.00
01:30:01 AM 0.00 3.27 73.72 0.00
01:40:01 AM 0.21 7.30 422.37 0.01
01:50:01 AM 0.56 9.62 440.75 0.02
02:00:01 AM 7.01 18.75 142.09 0.02
02:10:01 AM 0.06 8.12 535.84 0.00
02:20:01 AM 0.00 6.40 400.41 0.00
02:30:01 AM 0.00 4.73 330.87 0.00
02:40:01 AM 0.03 7.32 413.17 0.00
02:50:01 AM 0.00 7.11 407.45 0.00
03:00:02 AM 0.02 7.84 69.48 0.00
Average: 0.44 7.31 997.17 0.00

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WARNING: General Protection Faults in these executables
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Mar 4, 2008

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While the status page of lighty show i am using about 4.2Mbytes ~ 32-34mbits then the BW graph of data center show that i am using something like close to 52mbits.
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