intermittent failure in tests/benchmarks/timing_info

[andrewboie]

Seen on qemu_cortex_m3

***** Booting Zephyr OS zephyr-v1.13.0-4131-gc503eae198 *****
starting test - Time Measurement
Timing Results: Clock Frequency: 12 MHz
Context switch                               : 770 cycles , 64166 ns
Thread Creation                              :1419 cycles , 118250 ns
Thread cancel                                :1565 cycles , 130416 ns
Thread abort                                 :4411 cycles , 367583 ns
Thread Suspend                               :1660 cycles , 138333 ns
Thread Resume                                :1192 cycles , 99333 ns
Thread Sleep                                 :1726 cycles , 143833 ns
Heap Malloc                                  : 168 cycles , 14000 ns
Heap Free                                    : 150 cycles , 12500 ns
***** USAGE FAULT *****
  Illegal load of EXC_RETURN into PC
***** Hardware exception *****
Current thread ID = 0x20000638
Faulting instruction address = 0x0
Fatal fault in thread 0x20000638! Aborting.
***** HARD FAULT *****
  Fault escalation (see below)
***** USAGE FAULT *****
  Illegal use of the EPSR
***** Hardware exception *****
Current thread ID = 0x20000638
Faulting instruction address = 0x20000688
Fatal fault in thread 0x20000638! Aborting.

[andyross]

Yeah, as with others, this is a test that I can't make fail on unloaded systems across hundreds of runs. It's part of the broader symptoms well captured by #12553, and not really an issue with the test per se. Closing the test-specific bug.