Say threadA holds a mutex and threadB tries
to lock it with a timeout, a race would occur
if threadA unlock that mutex after threadB
got unpended by sys_clock and before it gets
scheduled and calls k_spin_lock.
This patch supplies the test that can be used
to reproduce the problem and the fix that was
provided in #48056Fixes#48056
Signed-off-by: Christopher Friedt <cfriedt@fb.com>
019a6ecae3