getting stacktrace from core dump

Question

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

Solution

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

Comments

[Admin]

By the way is your application written in C++?

[Gabriel Staples]

How do I find my corefile? I'm on Ubuntu 20.04.

[IBBoard]

If you're on a systemd-based system then you can run coredumpctl gdb -1 to run gdb on the last coredump.