PetteriAimonen opened a new pull request, #11252:
URL: https://github.com/apache/nuttx/pull/11252

   ## Summary
   
   Commit 9244b5a737c9222aa3df3eac167f76ce7e7e50b8 added support for 
non-standard field `si_user` that is useful for passing context pointers to 
signal handlers.
   
   This commits makes it work for all signals, not just `SA_KERNELHAND`.
   Previously `si_user` for normal signals was uninitialized garbage.
   
   ## Impact
   
   Does not affect existing working code. Makes it possible to use `si_user` 
for any signal (with the caveat that it is NuttX-specific).
   
   ## Testing
   
   Tested on custom STM32F4 board with simple code sending signal between two 
tasks.


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