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Questions tagged [core-dump]

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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Disable core file generation in RHEL7

I'm currently running RHEL7. I haven't been able to find a definitive explanation of how to disable core dump files. I can limit to number of core files that are produced, but I don't know how to ...
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Limiting total Core file sizes to 10% of disk usage in ArchLinux

I need to limit the total core files sizes generated to be 10% of my disk usage. I have set ulimit -c to be unlimited stating that each file size is unlimited. Then I used the configuration file /etc/...
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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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echo c > /proc/sysrq-trigger doesn't reboot the system

I am trying to collect a core dump in result of kernel panic. Installed and configured kdump, but when executing echo c > /proc/sysrq-trigger, everything just hangs and the reboot doesn't happen. I ...
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Analysing core dump in linux sytem : error

We are using a private module to dump a corefile which uses the kernel utility elf_core_dump in source/fs/binfmt_elf.c file in kernel source 4.4.52. Using this module we are getting a core of ...
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Modded Steam game crashes on start, Steam API does not load, cannot read core dump

I have the latest version of Empire: Total War in Steam on Arch Linux x86_64. I have followed this Reddit guide to install DME. I have gone through each and every step (except the optional ones) and ...
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788 views

Linux + how to know why Linux machine is hung from the messages on the console

As the picture below , my VM Linux machine was hung and I cant login how to identify the reason for the "hung" according to the messages on the console? I also searched more info from the /var/log/...
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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 ...
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637 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 ...
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149 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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Cannot find the core dump from an abort due to seg fault on Linux from a docker image

This is running in a docker image. My yml includes the following: - ulimit -c unlimited - ulimit -a Running several robot tests and one (in the middle) outputs: Segmentation fault (core dumped) !=...
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How to collect core files of system daemons?

Running a pretty standard Fedora 25 system I expect that the core files of all segfaulting processes are collected by ABRT. But this doesn't seem to be the case. ABRT is enabled: cat /proc/sys/...
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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 X-...
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filter coredumps collected by systemd

Is is possible to filter the coredumps collected by systemd-coredump? I do not want /var/lib/systemd/coredump/ to be filled up from executables in user writable locations coredumps of software from /...
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Why changing core size limit changes the location of coredump?

I am experiencing a weird behavior on CentOS 7.1. I have enabled saving the coredump by setting the following values OpenGPGCheck = no ProcessUnpackaged = yes in abrt-action-save-package-data.conf. ...
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281 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 ...
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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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380 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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Core File not being generated

I have recently been getting into linux through the Ubuntu Windows app. I need to look at the core file generated by a program that seg faults for a ctf, however no core file is being generated. ...
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Hard lockup triggers reboot but no panic and no kdump

I have been trying to debug random system freezes when running the 4.14.93-rt kernel. To this end, I have enabled the lockup detector in the kernel using the following config: ...
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308 views

What decides where core dump files are created?

Does /proc/sys/kernel/core_pattern decide where core dump files are created? Mine looks like $ cat /proc/sys/kernel/core_pattern |/usr/share/apport/apport %p %s %c %d %P which I guess means to pipe ...
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Given a core-dump, how to get the files opened by the late process?

Answers to related questions all suggest using lsof or checking under /proc/NPID/, which is not helpful for when the process is already gone and only its core-dump remains. However, it should be ...
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How to interpret the crash dump

This a sample crash dump I have from the unit. Could anyone help me in understanding what these details mean? Example: [] (sys_init_module+0x0/0x1878) from [] (ret_fast_syscall+0x0/0x30) Here ...
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Configuration to set coredump_filter

Do we have any configuration to set the coredump_filter value for a process. I am aware that we can do it by modifying /proc/PID/coredump_filter. But I want this to be a configuration so that we don'...
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Centos 7 Random Panic / Oops

Finally after much configuration changes I got a complete a crash dump I could inspect: KERNEL: /usr/lib/debug/lib/modules/3.10.0-327.28.3.el7.x86_64/vmlinux DUMPFILE: vmcore [PARTIAL DUMP] ...
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apache2 core dump not generated

I am trying to solve the following error in my apache2 error.log file. I use Debian Jessie 8 up-to-date with apache 2.4.10 from repo. [Tue May 31 16:35:21.951165 2016] [core:notice] [pid 6926:tid ...
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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 ...
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Not able to save crash dump using kdump

I have a VPS server on amazon's AWS Lightsail service. I've been testing kdump using the following two commands(to trigger an automatic kernel crash): # echo 1 > /proc/sys/kernel/sysrq # echo c &...
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Get Coredump file with coredumpctl

First thing what is the purpose of coredumpctl? To copy the coredump file using coredumpctl ? If yes I am trying to do the following: coredumpctl list TIME PID UID GID ...
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542 views

ABRT enabled and application core dumps?

ABRT is running on a RHEL7 server, so the kernel conf is : # cat /proc/sys/kernel/core_pattern |/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t e %P %I All core dumps from application systems/...
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What does mount_root_run_init option in kdump.conf actually mean?

I do not understand the purpose of the mount_root_run_init action in kdump.conf: # default <reboot | halt | poweroff | shell | mount_root_run_init> # - Action to preform ...
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“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 ...
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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 ...