Bug#869853: Known issues with gdb in rt-20-patch

["Sigmund Scholz" <s.scholz859@gmx.de>]

Package: linux-image-4.9.0-3-rt-amd64
Version: 4.9.30-2+deb9u2

With the current and all previous rt-kernel package for debian 9 it is almost impossible to use gdb for debugging.
 
Kernel.release:
     4.9.30-rt20
 
Known issues in rt-20-patch :
     gdb. While gdb is following a task it is possible that after a
     fork() operation the task is waiting for gdb and gdb waiting
     for the task.
 
In rt-21-patch the problem is solved!
 
My wish:
     using rt-21-patch or newer in next update
 
Thanks for attention