How do I get the backtrace for all the threads in GDB?
Generally, the backtrace is used to get the stack of the current thread, but if there is a necessity to get the stack trace of all the threads, use the following command.
thread apply all bt
When debugging with several threads, it is also useful to switch to a particular thread number and get the backtrace for that thread only.
From the GNU GDB threads documentation
For debugging purposes, GDB associates its own thread number--a small integer assigned in thread-creation order--with each thread in your program.
Usage:
info threadsThen identify the thread that you want to look at.
thread <thread_id>Finally, use backtrace for just that thread:
bt