Questions tagged [segmentation-fault]

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Using gdb/lldb to debug apache segfault

I am currently running an apache webserver on a macOS with an M1 chip. Recently I have been receiving some segmentation fault which is accompanied by empty response errors in the website. After ...
28 votes
6 answers
38k views

Can you get any program in Linux to print a stack trace if it segfaults?

If I run a program from the shell, and it segfaults: $ buggy_program Segmentation fault It will tell me, however, is there a way to get programs to print a backtrace, perhaps by running something ...
2 votes
1 answer
2k views

Many segfaults, RAM failing?

I have a Proxmox installation that is unstable, both the host and LXC containers crash. I to find the fault I have tried swapping RAM, CPU and MB. I also did a fresh reinstall. But I'm still getting ...
0 votes
0 answers
218 views

How to isolate Docker containers so that they are not sharing memory from a shared object / dynamic library?

I have a third party application that our pipeline runs on a a build server, within a dedicated Docker container, spun up fresh each time, just for this job. The application is very memory & CPU ...
1 vote
1 answer
1k views

How to test Linux server for hardware errors?

I have a Debian 10 server that is randomly rebooting, though no error were written to journald. The server has rebooted 20 times in last 3 days. $ journalctl --list-boots -22 ...
3 votes
2 answers
2k views

What would cause a PHP app to segfault intermittently under load?

Posted this on stackoverflow but it seems more relevant over here... I'm doing some load testing (using jMeter) on a PHP app (it's a symfony app, if that matters). I've tested it under both apache/...
1 vote
2 answers
1k views

Apache segfaults on Wordpress admin page

I can access the frontend of a new Wordpress setup without issue. I can also log in with a user account without issue. However, if I try to log in with an admin account I get a 500 error about 70-80% ...
0 votes
1 answer
2k views

apache http 2.2.29: Segmentation fault

We are using apache http server 2.2.29 on Linux. Below is the information related to Linux version (as found in /proc/version file) Linux version 2.6.32-573.el6.x86_64 ([email protected]....
0 votes
1 answer
2k views

rpc.mountd segfaults when trying to mount an nfs share

I have a pair of QNAP TS859U-RP nas devices running Linux version 2.6.33.2. These boxes are based on Debian. They are experiencing the same failure. When I try to mount an nfs share as root as ...
4 votes
1 answer
10k views

How to debug PostgreSQL segmentation fault?

I have a PostgreSQL 13 instance that keeps crashing: LOG: server process (PID 10722) was terminated by signal 11: Segmentation fault DETAIL: Failed process was running: COMMIT LOG: terminating any ...
1 vote
1 answer
188 views

Segmentation fault of Bacula on Apline Linux

I'm trying to run Bacula (backup app) on Apline Linux and get segmentation fault when connecting thru bconsole to bacula-dir. I was tried working configuration from another non-Alpine server, clean ...
2 votes
0 answers
1k views

Apache2 Segmentation Fault after upgrading to PHP8.0 Ubuntu 20

I recently upgraded a production server from PHP 7.4 to PHP 8.0 (this is using the ondrej packages). As a reference, I'm using Ubuntu 20.04.3, apache2.4.46 and now PHP8.0. After about 18 hours, the ...
0 votes
0 answers
2k views

Segfault error 4 in libmysqlclient.so

Since a few days, I see this kind of messages in my syslog: Sep 23 14:28:42 server kernel: [138926.637593] php5-fpm[6455]: segfault at 7f9ade735018 ip 00007f9ae4026772 sp 00007ffd69b4fad0 error 4 in ...
0 votes
1 answer
1k views

How can a bog-standard Wordpress install break PHP?

I'm trying to host a Wordpress site on the root of a standard Apache setup on Ubuntu 14.04. The main page of the site loads fine, but any other page causes a "no data received" message in the browser, ...
0 votes
1 answer
677 views

I am trying to import a virtual appliance. It concludes with a failure. What might me wrong?

I uploaded an ova file to my bucket. I open the Cloud Shell online terminal. I set region and zone successfully. Then I run the following command to start the import. gcloud compute instances import ...
0 votes
2 answers
962 views

Ubuntu 14.04 on Amazon EC2- postfix segmentation fault

I have an EC2 instance using Ubuntu 14.04 which is where I want to send email from. I tested it by sending an email: echo "This is the body of the email" | mail -s "This is the subject line " ...
0 votes
1 answer
147 views

Troubleshooting "traps: proces_name[pid] general protection" memory issue on Linux

I'm trying to troubleshoot a memory issue on one of my servers. Some time ago a daemon my company is developing crashed with segmentation errors. All would be somewhat fine, but seconds later other ...
0 votes
1 answer
247 views

Linux pvmove gone awry after turning on mq_deadline, any way to recover?

So we had a migration in the office using pvmove. Then this happened Mar 8 12:26:51 v1 kernel: [ 5798.100321] BUG: kernel NULL pointer dereference, address: 0000000000000140 Mar 8 12:26:51 v1 ...
2 votes
2 answers
1k views

Why doesn't Apache on Debian Wheezy create a core dump?

I have seen several questions regarding this, and must have tried nearly everything, but still, Apache won't create a core dump on the production server. This is the setup that actually works on my ...
15 votes
2 answers
31k views

How to get a core dump from apache when segfaulting

I've followed instructions from many locations online on how to get a core dump from apache when it is producing a segfault, but it still refuses to generate the dump. I have: Added the ...
1 vote
1 answer
1k views

Un-readable core dump after segmentation fault

I have the following problem on my LAMP(hp) stack, from time to time I get Segmentation fault. So I made core dump in my Debian Squeeze and I hoped that it will tell me something, but it tells me ...
0 votes
0 answers
926 views

Could a CRON cause a segfault?

I'm running a web-server using AWS (Ubuntu 18, Apache2, Django, with https cert from Let's Encrypt - which auto renews) at vanlevy.com. I am the only one who has access to the AWS account and the ...
3 votes
1 answer
756 views

Xdebug Profiler Aggregate always crashes (xdebug.profiler_aggregate=1 causes coredump in xdebug.so xdebug_profiler_output_aggr_data())

Whenever I go to localhost I get a 404 error, until I mark xdebug.profiler_aggregate=0 The reason why is xdebug.so coredumps (SEGFAULT) [Xdebug] zend_extension=/usr/lib/php/20160303/xdebug.so xdebug....
3 votes
1 answer
1k views

Apache2 Segfault - need help interpreting this coredump (suspect cause is memcache / php session related)

Three Apache2 web servers running a PHP 5.2.3 web site. We're using Memcache to cache rendered pages but also as the storage engine of the PHP Sessions. At peak traffic times we're getting Apache ...
5 votes
1 answer
7k views

apache child pid exit signal Segmentation fault (11)

when I installed joomla I can't see the index.php and I get this messages in my /var/log/apache2/error.log [notice] child pid 3211 exit signal Segmentation fault (11) for activate the coredump, I ...
0 votes
1 answer
2k views

zend_mm_heap corrupted PHP Fatal error: Cannot redeclare composerRequire

We have a webserver where besides normal requests large files are being uploaded. Some requests (such as 1/10) are dropped. We than see following errors in the error log. ==> /var/log/apache2/...
11 votes
3 answers
34k views

How to diagnose frequent segfaults

My server is logging frequent segmentation faults to /var/log/kern.log in different tools. So far I've seen them in Perl, PHP and rsync. All installed software is up-to-date Debian packages. Here's an ...
2 votes
2 answers
1k views

Need help generating a core dump from apache segfault

I have a script which intermittently returns a white screen of death in firefox and Error 324 (net::ERR_EMPTY_RESPONSE): Unknown error. chrome. When I try to access the script using a PHP HTTP client ...
26 votes
1 answer
74k views

Tuning Apache2 prefork MaxClients ServerLimit

I have a machine with 128 GB Ram that is using Apache2 as Webserver (in this machine there is no Database Server, the Database Machine is a 64 GB Ram machine that can handle 2000 max connections). I ...
0 votes
1 answer
125 views

IFTTT segmentation fault [closed]

I'm doing an assignment for school using getop with ocelot, I have to count words and count the substrings in the document. I have the word counting working but I was not able to do the substring, I ...
2 votes
2 answers
7k views

What is this SIGSEGV error code 14?

Every day this error occured kernel: crond[1234]: segfault at xxxxxxx rip xxxx rsp xxx error 14 What's happen
1 vote
1 answer
4k views

Segmentation fault diagnoses

I am trying to diagnose a segmentation fault issue that started to occur after upgrading to Ubuntu 14.04 (32 bit). I am running a TSM client 6.2.5-4 which worked fine up to the upgrade. I tried to ...
0 votes
1 answer
269 views

Lot of segfaults and glibc detected erros too

my apache error.log has a lot of segfault errors: [core:notice] [pid 16753] AH00052: child pid 4861 exit signal Segmentation fault (11) And also some glibc detected errors every 10 hours or so: *** ...
2 votes
2 answers
10k views

Apache2 configtest segmentation fault

For whatever reason I managed to mess up Apache quite bad (Ubuntu 12.04). The output below complains about configtest failing and a segmentation fault. However, I can't find anything in /var/log/...
0 votes
0 answers
242 views

Why I can't upload a 4k video to phpvibe?

So I trying to playing with Google VM tools and Phpvibe. My chalange is, you can upload any video whatever you want, to the site and after that the server is convert to the optimal format, so you can ...
2 votes
3 answers
8k views

Segmentation fault when running PHP script from CLI, works fine as cron job

I have a PHP script that reads a file via fgetcsv through PHP's zip:// wrapper. This works fine locally and when run on production via a cron job. It fails with a Segmentation fault when invoked on ...
1 vote
1 answer
431 views

saslauthd running in segfault after some time

I'm using postfix with courier and mysql for authentication. Lately I have some segmentation faults, which causes sasl deamon to crash. It seems, the have something to do with dictionary attacks on ...
1 vote
1 answer
841 views

SquashFS mksquashfs segfault while compressing

I'm trying to create SquashFS partition under Ubuntu 11.04 (1TB harddisk, 8Gb RAM). Source folder contains 91Gb html files (several mirrored websites). Trying to do this: mksquashfs content_folder ...
1 vote
1 answer
7k views

wget giving Segmentation fault

I recently did apt-get update followed by apt-get upgrade on my Debian VPS server. Suddenly (at least) wget stopped working with error Segmentation fault. It's not even trying to do something. So ...
2 votes
1 answer
666 views

Varnish 4.1 segfault in Docker

I'm trying to use Varnish 4.1 with Docker (1.9.1). I've built a docker image in Alpine Linux 3.2 with its musl-libc to reduce the image size. Dockerfile: FROM alpine:3.2 ​ RUN echo 'http://dl-4....
16 votes
1 answer
14k views

Why is logrotate causing Apache to seg fault each time?

Every time logrotate runs Apache/2.4.7 (Ubuntu) experiences a seg fault and does not restart: [Wed Sep 10 06:35:54.266018 2014] [mpm_event:notice] [pid 20599:tid 140630283466624] AH00493: SIGUSR1 ...
1 vote
0 answers
396 views

Teamspeak 3 Server Segfaults on Ubuntu 14.04 x64

I've been running a bunch of software on my Ubuntu server, was running 10.04 for a few years and never bothered to update, it hit EOL this year and I finally got around to moving to 14.04 and my TS3 ...
7 votes
3 answers
16k views

segfaults are not logging into /var/log/messages

I'm using Red Hat Enterprise Linux Server release 5. In this whenever a user process crashes due to segmentaion faults, it was not logged in /var/log/messages. Even dmesg is also not showing any ...
0 votes
2 answers
3k views

sendmail segmentation fault

We are using debian lenny on a server & we are using it for monitoring server & sending email for reporting. We are using sendmail to send emails. We found the following error when we did not ...
4 votes
2 answers
4k views

I get a Segmentation fault when doing apt-get util-linux

I've found that a lot of upgrade commands and Apache on my system are failing with Segmentation faults. I don't know if this is the main one, but a lot of packages depend on util-linux: root@...
1 vote
1 answer
1k views

Segmentation fault (11) on PHP website

I have recently moved a clients WordPress site to a new server. His old server was pretty outdated. It is the only site on the server. It's been a few weeks and I randomly get these errors in the php ...
3 votes
1 answer
222 views

Multiple segmentation faults on Linux host

I have an old Slackware 9.0 mail server on a VM at Linode.com. It has around 130GB of mail hosted on it, in Maildir format on partitioned, separate Ext3 filesystems (largest one is 92GB). I'm in the ...
2 votes
1 answer
2k views

ps is giving a segmentation fault

I'm getting a segmentation fault when I try to run a simple "ps aux" for a certain user. If I run as root or another user it runs well. So I think is something related with ulimits, but I think that ...
3 votes
1 answer
7k views

Segmentation fault when running any PHP

Update: I fixed this by running apt-get upgrade which updated many php packages, it must of been a buggy php extension which is now fixed I have vagrant running homestead (Ubuntu 14.10), when I ssh ...
0 votes
3 answers
323 views

Solaris cc segfaults when compiling rsync on intel platform

I am trying to compile rsync-3.0.7 on Solaris 5.10 on an Intel chipset. When running ./configure I see the following (obviously erroneous lines): checking size of int... 0 checking size of long... 0 ...