Mbed-os: drivers-lp_ticker test failed on NUCLEO_F746ZG

[maciejbocianski]

Description

• target: NUCLEO_F746ZG
• test: tests-mbed_drivers-lp_ticker
• toolchain: GCC_ARM (likely all)
• Mbed OS: master (082ba151a (HEAD -> master, upstream/master, origin/master, origin/HEAD) Merge pull request #8112 from studavekar/update_doc_unittest)
• catched in PR: #7925

[1537279728.87][CONN][RXD] >>> Running case #11: 'Test multi ticker'... 
[1537279728.97][CONN][INF] found KV pair in stream: {{__testcase_start;Test multi ticker}}, queued... 
[1537279729.17][CONN][RXD] :83::FAIL: Expected 16 Was 32 
[1537279729.27][CONN][INF] found KV pair in stream: {{__testcase_finish;Test multi ticker;0;1}}, queued... 
[1537279729.37][CONN][RXD] >>> 'Test multi ticker': 0 passed, 1 failed with reason 'Assertion Failed'

How to reproduce

To catch the problem, test should be run multiple time or even modified to run test case constantly in loop

run mbed test -t GCC_ARM -m NUCLEO_F746ZG -n tests-mbed_drivers-lp_ticker -v --profile develop

@MateuszMaz with help of @mprse will continue investigation on this issue

Issue request type

[ ] Question
[ ] Enhancement
[X] Bug

[0xc0170]

cc @ARMmbed/team-st-mcd

[ciarmcom]

ARM Internal Ref: MBOTRIAGE-1709

[MateuszMaz]

I can not reproduce this issue on current master(9d78650fccaf7debaf81d2010f30985de0ea0974) (even changed this test to perform it 20000 times). I could reproduce it when qspi_hal_test_refactoring was based on 91354184dc0282749d27cb9f6529e2a1811b7b8c (as a branch on @maciejbocianski fork)

[jeromecoutant]

Hi
I also tried to reproduce the issue (master branch), but I couldn't... :-(

[maciejbocianski]

I also tested today on latest master on all compilers and cannot reproduce.