A coredump represents the state of working memory of a Unix program at a specific time especially when the program has terminated abruptly.

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Enable core dumps for all applications started by a user with systemd

This is a follow-up to How to enable crash reports/core dumps/stack trace logging globally?: How can I achieve this on OpenSUSE 13.1 (which uses systemd) and 13.2 for all processes started from an ...
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27 views

Core dump in every programs in ArchLinux

It's been a few time now that I install my archlinux system on a USB Key. This key had A Fat32 partition A Ext4 partition, on which the ArchLinux system is installed Everything is great, from X to ...
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2answers
57 views

How do I configure the location for core dumps?

Recently I had an experience where a core dump was created in my home directory that resulted in the filesystem running out of space. How can I tell AIX to create core dumps in some other location?
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How can you annotate or club info into ELF core files on Linux?

For debugging core files it would be useful to add additional information into a core file at the time it is generated. I'm currently using /proc/sys/kernel/core_pattern to run a 'dumb' script that ...
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134 views

Can anything useful be done with a truncated core?

We have processes written in a mix of Python, Java and C++ that core dump from time to time. They allocate more memory in chunks as needed during runtime, and are known to crash when their allocation ...
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1answer
36 views

PID of process causing error

I have this script: #!/bin/bash # -> dump.$pid ulimit -c unlimited # trap ERR set -o errexit # also trap error in the middle of a pipe (1) # otherwise it will only trap the error on (2) set -o ...
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1answer
229 views

Exit status on core dump

When a process dumps core, does it set any particular exit code? Alternatively, is there a way to detect if core was dumped in a shell script. I have shell script that fires a job which occasionally ...
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1answer
244 views

“Missing separate debuginfo for …” when running gcore

I am running the following: command: gcore 56058 output: Missing separate debuginfo for /lib64/libdl.so.2 Try: zypper install -C "debuginfo(build-id)=dcca9c1f648bda0a7318a7c8844982c440e3e4a3" ...
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132 views

kdump doesn't produce core dump after buggy module is loaded

I am running kernel 3.14.4 on Fedora 18. I am experimenting with a kernel module I am making. The module has a bug (at least one) and crashes the kernel. Sometimes I see a stack trace on my frozen ...
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114 views

How to extract running Apache configuration from core dump?

Apache is loading the configuration from files into its memory. If the config files are changing the Apache process won't activate it until a reload/restart happens. Now I have to debug the current ...
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2answers
645 views

Are limits in linux (like those controlled by ulimit or /etc/security/limits.conf) per user or per user per process?

I saw three copies of a process running and one of them cored in what seems like memory issue. Each individually occupies about 3-4 GB of memory..would a limit account for killing one of them? And if ...
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1answer
60 views

Files with “core” name

Can I be sure that files with name core on the system are core dump files? Or how can I be certain about some files that they are core dumps to delete them? (best practices are welcome)
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2answers
317 views

How to determine which host generated a core file?

I have a setting where several machines share the same filesystem via NFS. Through a queueing system processing jobs can be submitted to several computing machines (with different properties). ...
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1answer
59 views

Configure Solaris to write out a core image of an abnormally terminated telnet and man process

What is the easiest way to configure Solaris to write out a core image of an abnormally terminated telnet and man process?
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1answer
680 views

Debugging dmesg logs

I noticed I have the following in my logs. I just am not sure as to how to go about figuring out how to fix or find out what is causing them and if they are serious. [582046.956291] Core dump to ...
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1answer
41 views

Configure UML to generate core file

The User Mode Linux (UML) I run on Ubuntu crashes occasionally, but does not generate any core file. I'd like to know the necessary configuration to be applied on UML so it generates a core when it ...
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4answers
7k views

How to view core files for debugging purposes in Linux?

I want to view the contents of a core file while debugging a program. How can I view the contents of a core file?
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1answer
190 views

Eclipse makes laptop unusable

Currently I can't use my eclipse project. I'm using ArchLinux: -` .o+` rkmax@satellite `ooo/ OS: Arch Linux ...
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1answer
71 views

Can you think of a way to stop the generation of a core file WHILE it is happening?

I was just wondering if you can think of a clever way to stop the creation of a core file while it is being produced. I understand that there are several way to disable the creation like setting ...
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71 views

Gimp core dumped

I'm on ArchLinux, Gimp is updated (already tried to uninstall and re-install) but when I run it I get (after 6 seconds): Bus error (core dumped) I don't understand what it could be... Googling it ...
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2k views

Why is systemd-coredump storing the dump in memory itself?

I just noticed that most of my memory was hogged by coredump of a few processes that I had killed recently. I had a systemd-coredump process running for each crashed process (usually the processes ...
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1answer
233 views

core dump help— linux

I'm trying to understand the core dump generation. Is the core dump generated separately for a user space application process crash and the kernel level crash? Is the ulimit -c for both kinds? Can you ...
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2answers
1k views

No more coredumps after migrating to systemd [duplicate]

Generating coredumps used to work fine, but after switching over to systemd, I only see the message Aborted (core dumped) but no core file is generated. Has it something to do with systemd? ...
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2k views

No core-dumps after recent upgrades: How to analyze it?

When I execute a program that I work on, it fails with the following message: ... Aborted (core dumped) However, no core dump is created. Core dumps were written previously, and I don't remember ...
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1answer
640 views

How to diagnose a problem using a core dump?

I have the following core dump: pth_signal.pthread_kill(??, ??) at 0xd0124734 pth_signal._p_raise(??) at 0xd01241a4 raise.raise(??) at 0xd038acd0 abort.abort() at 0xd03eeb78 ...
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1answer
999 views

Crash and exit code 721035

Where can I find what this exit code means? I have process (A) that calls program (B) using clib system(). Sometimes program (B) returns with exit code 721035 and AIX kills process A. This is random ...
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1answer
100 views

What are core.mountd.######### files? OpenSolaris

I and gaining an ever expanding list of of core.mountd.12009999475 type files in my root directory? What are these? Can I just delete them? What causes them to be created?
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5k views

How come no core dump is create when an application has SUID set?

I setup my environment to create a core dump of everything that crashes, however when I run an program with SUID set on a different user than the executing user it doesn't create a core dump. Any ...
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1answer
1k views

Core files when the symbols are stripped

I am building an application using g++ 4.3. I am using the with maximum possible optimization level, not using the -g option, and I am stripping symbols after it builds. If I do NOT strip symbols ...
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2answers
1k views

Dump process core without killing the process

Is there a way to get a core dump (or something similar) for a process without actually killing the processes? I have a multithreaded python process running on an embedded system. And I want to be ...
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1answer
3k views

How to understand the kernel panic core dump output?

This is the output I get when I run one of my applications: Kernel bug detected[#1]: Cpu 0 $ 0 : 00000000 00000000 0fffff00 0fffff00 $ 4 : c6800000 850b7780 8b0043c0 00000040 $ 8 : 000004ac ...
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1answer
995 views

No core dump on Ubuntu on a Parallels shared folder

I have an application that I'm working on, and I'm having trouble getting a core dump when it segfaults. In fact, I'm having trouble getting real core dump files at all. A simple test case will ...