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I'm pretty much using GDB for the first time. I run
$ gdb then I'm running
attach <mypid> then I see that my process is stuck (which is probably ok). Now I want it to continue running, so I run
continue and my process continues running but from here I'm stuck if I want again to watch my current stack trace etc. I couldn't get out of continuing... I tried Ctrl-D etc. but nothing worked for me... (was just a guess).
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Like you can cancel a program on the command line, GDB lets you use ctrl-c to stop a program wherever it currently is. Hit ctrl-c now to break the infinite loop.
GDB normally ignores breakpoints when it resumes execution, until at least one instruction has been executed. If it did not do this, you would be unable to proceed past a breakpoint without first disabling the breakpoint. This rule applies whether or not the breakpoint already existed when your program stopped.
You should interrupt the process that is attached by gdb. Do not interrupt gdb itself. Interrupt the process by either ctrl-c in the terminal in which the process was started or send the process the SIGINT by kill -2 procid. With procid the id of the process being attached.
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