kernel.timer.tickless test fails on atsamd21_xpro

[stephanosio]

Describe the bug
The tests/kernel/timer/timer_api/kernel.timer.tickless test fails on the atsamd21_xpro board.

To Reproduce
Build and run tests/kernel/timer/timer_api/kernel.timer.tickless on atsamd21_xpro.

Expected behavior
Test passes

Screenshots or console output

Running test suite timer_api
===================================================================
starting test - test_time_conversions
PASS - test_time_conversions
===================================================================
starting test - test_timer_duration_period
PASS - test_timer_duration_period
===================================================================
starting test - test_timer_period_0
PASS - test_timer_period_0
===================================================================
starting test - test_timer_expirefn_null
PASS - test_timer_expirefn_null
===================================================================
starting test - test_timer_periodicity
PASS - test_timer_periodicity
===================================================================
starting test - test_timer_status_get
PASS - test_timer_status_get
===================================================================
starting test - test_timer_status_get_anytime
PASS - test_timer_status_get_anytime
===================================================================
starting test - test_timer_status_sync
PASS - test_timer_status_sync
===================================================================
starting test - test_timer_k_define

    Assertion failed at ../src/main.c:64: duration_expire: interval >= 100 is false

FAIL - test_timer_k_define
===================================================================
starting test - test_timer_user_data
PASS - test_timer_user_data
===================================================================
starting test - test_timer_remaining
PASS - test_timer_remaining
===================================================================
starting test - test_timeout_abs
PASS - test_timeout_abs
===================================================================
Test suite timer_api failed.
===================================================================
PROJECT EXECUTION FAILED

Environment (please complete the following information):

• OS: Ubuntu 18.04
• Toolchain: Zephyr SDK 0.11.2
• Commit SHA: ed2d263

[pabigot]

FWIW I'm unable to reproduce this on my board; running with ZTEST_RETEST_IF_PASSED=y passed 100 times in a row without failure.

[carlescufi]

Thanks @pabigot.
@stephanosio can you take another look to see if you can reproduce? @pabigot clearly cannot.

[stephanosio]

FWIW I'm unable to reproduce this on my board; running with ZTEST_RETEST_IF_PASSED=y passed 100 times in a row without failure.

@pabigot @carlescufi I re-tested this on the latest master today and the failure is gone (it is still reproducible with ed2d263, so something must have recently fixed it),

Closing since this is no longer an issue.