cm_msg() recursion protection is not thread safe, drops messages from other thread

[dd1]

cm_msg: Error: dropped message [[fectrl,LOG] pwb27: state 10 -> 10: ping...] to break recursion
[fectrl,INFO] trg01: trigger disabled

it two threads call cm_msg() at the same time, the recursion protection flag gets set by the first thread and message from second thread is dropped.

K.O.

[dd1]

fixed 49fc4bcb15e18cc0a8b11468b3c8086dc8691fa8