Linux – getting stacktrace from core dump

coredumplinux

How can I get a stack trace from a core dump file? The file is about 14 mb and is generated after my application exits saying "segmentation fault"

I'm on Red Hat 5.5

Best Answer

gdb /usr/bin/myapp.binary corefile

Then, use one of:

(gdb) bt
(gdb) bt full
(gdb) info threads
(gdb) thread apply all bt
(gdb) thread apply all bt full

Note that installing debug symbols for the related libraries will help

Related Solutions

Linux – How to generate a core dump in Linux on a segmentation fault

This depends on what shell you are using. If you are using bash, then the ulimit command controls several settings relating to program execution, such as whether you should dump core. If you type

ulimit -c unlimited

then that will tell bash that its programs can dump cores of any size. You can specify a size such as 52M instead of unlimited if you want, but in practice this shouldn't be necessary since the size of core files will probably never be an issue for you.

In tcsh, you'd type

limit coredumpsize unlimited

Linux – Quickly create a large file on a Linux system

dd from the other answers is a good solution, but it is slow for this purpose. In Linux (and other POSIX systems), we have fallocate, which uses the desired space without having to actually writing to it, works with most modern disk based file systems, very fast:

For example:

fallocate -l 10G gentoo_root.img

Best Answer

Related Solutions

Linux – How to generate a core dump in Linux on a segmentation fault

Linux – Quickly create a large file on a Linux system

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