linux-kernel - [PATCH 0/2] selftests/harness: Handle timeouts cleanly

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Message-Id: <20200311211733.21211-1-keescook@chromium.org>
Date:   Wed, 11 Mar 2020 14:17:31 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Shuah Khan <shuah@...nel.org>
Cc:     Kees Cook <keescook@...omium.org>,
        Andy Lutomirski <luto@...capital.net>,
        Will Drewry <wad@...omium.org>,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] selftests/harness: Handle timeouts cleanly

When a selftest would timeout before, the program would just fall over
and no accounting of failures would be reported (i.e. it would result in
an incomplete TAP report). Instead, add an explicit SIGALRM handler to
cleanly catch and report the timeout.

Before:

        [==========] Running 2 tests from 2 test cases.
        [ RUN      ] timeout.finish
        [       OK ] timeout.finish
        [ RUN      ] timeout.too_long
        Alarm clock

After:

        [==========] Running 2 tests from 2 test cases.
        [ RUN      ] timeout.finish
        [       OK ] timeout.finish
        [ RUN      ] timeout.too_long
        timeout.too_long: Test terminated by timeout
        [     FAIL ] timeout.too_long
        [==========] 1 / 2 tests passed.
        [  FAILED  ]

-Kees

Kees Cook (2):
  selftests/seccomp: Move test child waiting logic
  selftests/harness: Handle timeouts cleanly

 tools/testing/selftests/kselftest_harness.h | 144 ++++++++++++++------
 1 file changed, 99 insertions(+), 45 deletions(-)

-- 
2.20.1