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9
votes
0answers
114 views

Non-blocking core dump on Linux?

I'm looking for a way to take a non-intrusive coredump of a running process on Linux. I'm familiar with gdb's gcore, but that can only be run when gdb is attached to the process and it's stopped for ...
1
vote
2answers
308 views

php crashes with no core file and this message : apc_mmap failed

Description of the problem Regularly, cron php processes crash on our production server, which result in mails with the following body : PHP Fatal error: PHP Startup: apc_mmap: mmap failed: in ...
1
vote
1answer
104 views

child pid 29281 exit signal Segmentation fault (11)

I have recently moved a clients WordPress site to a new server. His server was pretty outdated.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 ...
2
votes
0answers
173 views

Internet Explorer SSL use causes segfault - Apache httpd SIGSEGV in apr_uri_parse

Recently I've had quite a large influx of the error below in the error_log. I've found out that it happens when someone browses my site using SSL https: and Internet Explorer, all other browsers are ...
3
votes
0answers
30 views

Obtain backtrace from httpd?

In my /var/log/httpd/error_log in Fedora 19 I have several child segmentation faults recorded. How can I get a backtrace for these when they occur?
0
votes
0answers
72 views

How do I get debug symbols for the Python 2.7.5 executable installed from the “python-2.7_1,2” port?

I have a runaway process to debug. The problem only manifests on two FreeBSD 9.1 servers I'm using. I have a core file that might contain useful information. My first two thoughts were to attach to ...
2
votes
1answer
2k views

centos 6 debuginfo repository does not have httpd debug version available

I am trying to get the debug version of httpd so I can use it in conjunction with gdb. I am having a hard time getting them, and they don't seem to be in the standard epel-debuginfo repository. What ...
1
vote
0answers
175 views

Debugging apache seg fault with gdb

Apache on a production server of mine is seg faulting intermittently. I have enabled core dump option in apache configuration and have several dumped core files. Unfortunately, since it is a ...
0
votes
2answers
115 views

ssh client disconnected, after relogin, how can I recontrol my process or program?

as show below: Step 1: SSH Login to remote host. Step 2: Use gdb debug proc_a. Step 3: Use gdb subcommand (gdb) shell vi tes.c, edit the file. Step 4: The ssh client have something unknown error ...
1
vote
0answers
215 views

PHPExpress module segfault error

As a part of my server upgrade, I have installed newer versions of OS, PHP, Apache. Also, I have installed PHPExpress on my server: [root@dedicated]# cat /etc/redhat-release CentOS release 6.2 ...
2
votes
2answers
1k views

Apache Segmentation Fault

In my apache error log im getting lines such as [Wed Sep 21 16:51:14 2011] [notice] child pid 5414 exit signal Segmentation fault (11), possible coredump in /tmp/apache-cores/ [Wed Sep 21 17:04:15 ...
5
votes
1answer
1k views

Advice for Debugging Apache with PHP Segmentation Faults

Every hour or so an Apache child process seg. faults on our web server. We are running a non-threaded PHP 5.2.17 Apache module with Apache prefork MPM. I have run httpd with a few core dumps, gdb and ...
2
votes
1answer
182 views

What's pgrp in this context?

gdb puts the debugged process in its own pgrp and sets the terminal to that pgrp. (Try e.g. ps j on the PIDs of gdb and your program being debugged.) Quoted from here. And what does it ...
1
vote
0answers
564 views

How to modify Ubuntu 10.04.1 Grub entry for supporting KGDB kernel image

I am trying to update target m/c grub.cfg file for KGDB setup but while booting the m/c it got hung completely and not asking/waiting for remote gdb connection. Following is the entry which I added:- ...
-1
votes
1answer
578 views

Want to install GDB on Fedora 7 machine

I want to install GDB GNU debugger for debugging C Programs, onto my fedora machine.. I installed the gzip file from gnu website, but it gives error during MAKE command.. I am doing all the steps ...
1
vote
4answers
3k views

I need help debugging apache with gdb (no debugging symbols found)

I'm trying to debug a segfault in PHP/Apache running on RHEL4. This is a production server, so I'm trying to install a separate copy of apache and php, and run apache through gdb. When I load httpd ...
1
vote
4answers
1k views

Running gdb on Ubuntu 9.10 Apache2 Install

I am trying to run gdb to debug my Ubuntu 9.10 Apache2 install and having a couple of problems: It seems like the package installed by Ubuntu for Apache2 does not include debugging symbols; is there ...