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

learn more… | top users | synonyms

1
vote
0answers
26 views

Is there any option to send core files to a remote location without storing them locally?

I understand we can use /proc/sys/kernel/core_pattern to configure the core file name, is there a way to mention a remote path, or mounting the network drive is the only option? My system does not ...
2
votes
2answers
34 views

Is there a hook to determine core file generation finished

How I can determine that core.<pid> file generation started/finished?
3
votes
2answers
68 views

Is core dump generation an atomic operation?

I mean if I see core.<pid> in filesystem does it mean that core file generation finished and I can use it on my own? My question was answered. But I decided to explain it a little bit. I ...
0
votes
1answer
23 views

What is the information present inside a kernel core dump

I am running CentOS 6. The system got a Kernel Panic and rebooted. I have enabled coredump generation, hence it generated a Kernel Core Dump of Size 300MB. What is the information that got ...
1
vote
1answer
32 views

Automatically generate process core during CPU spike

I have a process running on Linux box which occasionally takes more than 100% (its a quad-core processor) CPU (as seen in 'top' output) and the other commands running on this process get stuck. By the ...
2
votes
1answer
62 views

How to delete core.* files while the program is running?

I launch my program from .sh file (for simplicity let's say it's content is just ./myprogram). For some unknown reason the program generates large core.* files. What should I add in my .sh file so ...
1
vote
0answers
24 views

How to get coredump with the lack of disk space on RedHat Linux

I wounder is it possible to compress core dump on the fly and still use default system for processing core dumps in Red Hat Linux (abrt). Environment description: Our key daemon crashed when it ...
1
vote
1answer
46 views

Missing core dump

I have a crashing application, which crashes with the output: Aborted (core dumped). Now when I look at the directory, containing the binary, there is no crashdump. There is no core directory. ...
5
votes
2answers
127 views

Deleted my ssh keys

I'm on a Mac (OSX). I've accidentally deleted my ssh keys, but I haven't restarted my computer yet so I'm still able to access servers with my key. I guess the ssh-agent has some form of it in ...
0
votes
1answer
16 views

Cups not core dumping

Even though core dumping is enabled on my system and is working for every other processes, cups is setting its soft limit to 0 over-ridding the system defaults. I've yet to find documentation on how ...
2
votes
1answer
111 views

Cleaning up coredumpctl list

I'm looking for a way to remove any trace of old coredumps in coredumpctl list. At the moment it lists coredumps beginning at 2014-12-14 - I've updated software so often between then and now that I ...
0
votes
1answer
268 views

Firefox crash and Hard Disk usage is 100%

Distribution: Arch Linux x86_64 DE: Xfce4 When I using Firefox or dwb web browser, while surfing some web pages, the computer stack for a while then the browser crash. I observed that when this ...
0
votes
0answers
753 views

“Illegal instruction (core dumped)” in __lll_lock_elision() for various programs after suspend with initramfs (Arch/Manjaro)

I am getting random "Illegal instruction (core dumped)" on various programs in my Arch Linux system, since I ran some system updates. The crashes are quite random. E.g. sometimes "git status" crashes ...
0
votes
0answers
232 views

Starting Kdump: FAILED

I am unable to start kdump on my machine. It is prompting Starting Kdump: FAILED. I have edited the /etc/grub.conf file and provide 1024M to crashkernel. I have also provided the path to where the ...
4
votes
1answer
6k views

How to set the core dump file location (and name)?

I am on CentOS 6, trying to enable core dumps for an application I am developing. I have put: ulimit -H -c unlimited >/dev/null ulimit -S -c unlimited >/dev/null in to my bash profile, but a ...
1
vote
1answer
262 views

Core File In unix

I have some doubts about core file. 1) what is core file. 2) where it is located. 3) what is the use of core fie. 4) How to generate core files while compiling c programs. 5) what is the difference ...
0
votes
2answers
2k views

How to disable core dump generation in Centos (cPanel Server)?

I want to disable core dump generation, How can I disable it ? One of the website keeps generating core dumps every second and eats up all the disk space. OS Details: CentOs cPanel Server ...
1
vote
1answer
607 views

Where to search for the core file generated by the crash of a linux application?

I am trying to find out the reason of crash for one of my Linux application. But I don't know where core is going. cat /proc/sys/kernel/core_pattern core.%e.%p Any Idea?
2
votes
0answers
249 views

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 ...
1
vote
2answers
574 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?
2
votes
0answers
64 views

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 ...
5
votes
1answer
822 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 ...
1
vote
1answer
73 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 ...
4
votes
1answer
1k 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 ...
2
votes
1answer
1k 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" ...
2
votes
0answers
212 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 ...
1
vote
1answer
270 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 ...
3
votes
2answers
1k 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 ...
0
votes
1answer
92 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)
2
votes
2answers
927 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). ...
1
vote
1answer
69 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?
3
votes
1answer
1k 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 ...
0
votes
1answer
87 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 ...
9
votes
5answers
23k 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?
1
vote
1answer
295 views

Eclipse makes laptop unusable

Currently I can't use my eclipse project. I'm using ArchLinux: -` .o+` rkmax@satellite `ooo/ OS: Arch Linux ...
3
votes
1answer
90 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 ...
0
votes
0answers
87 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 ...
7
votes
1answer
3k 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 ...
2
votes
1answer
365 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 ...
2
votes
2answers
2k 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? ...
7
votes
1answer
3k 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 ...
3
votes
1answer
902 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 ...
1
vote
1answer
1k 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 ...
3
votes
1answer
109 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?
12
votes
3answers
7k 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 ...
2
votes
1answer
2k 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 ...
8
votes
2answers
2k 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 ...
3
votes
1answer
4k 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 ...
5
votes
1answer
1k 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 ...