i can confirm that the patch is working on mbed-os with NXP LPC55S69

We checked both patches, and they do not seem to fix the issue

@KenLSoft

1. from my latest debug session i found that psa_wait returns the correct signals, but by the time psa_get tries to handle them the signals shut down and then psa_get will go into panic
2. client sends a string to SP1, SP1 doubles the string and calls SP2, SP2 should reverse the string and return it to SP1 which will return it to client.
3. i dont know

From what we've seen mbed-os disables the "Automatic Dynamic Allocation"