linux-kernel - Re: [PATCH] kunit: Fix '--build

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Message-ID: <CAFd5g44=8TV4VciMkcD2DHR+UsnpwyEFbw2Xucwo7-as6Py_4g@mail.gmail.com>
Date:   Fri, 6 Sep 2019 18:16:32 -0700
From:   Brendan Higgins <brendanhiggins@...gle.com>
To:     SeongJae Park <sj38.park@...il.com>
Cc:     shuah <shuah@...nel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>, kunit-dev@...glegroups.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kunit: Fix '--build_dir' option

On Fri, Sep 6, 2019 at 9:12 AM SeongJae Park <sj38.park@...il.com> wrote:
>
> Running kunit with '--build_dir' option gives following error message:
>
> ```
> $ ./tools/testing/kunit/kunit.py run --build_dir ../linux.out.kunit/
> [00:57:24] Building KUnit Kernel ...
> [00:57:29] Starting KUnit Kernel ...
> Traceback (most recent call last):
>   File "./tools/testing/kunit/kunit.py", line 136, in <module>
>     main(sys.argv[1:])
>   File "./tools/testing/kunit/kunit.py", line 129, in main
>     result = run_tests(linux, request)
>   File "./tools/testing/kunit/kunit.py", line 68, in run_tests
>     test_result = kunit_parser.parse_run_tests(kunit_output)
>   File "/home/sjpark/linux/tools/testing/kunit/kunit_parser.py", line
> 283, in parse_run_tests
>     test_result =
> parse_test_result(list(isolate_kunit_output(kernel_output)))
>   File "/home/sjpark/linux/tools/testing/kunit/kunit_parser.py", line
> 54, in isolate_kunit_output
>     for line in kernel_output:
>   File "/home/sjpark/linux/tools/testing/kunit/kunit_kernel.py", line
> 145, in run_kernel
>     process = self._ops.linux_bin(args, timeout, build_dir)
>   File "/home/sjpark/linux/tools/testing/kunit/kunit_kernel.py", line
> 69, in linux_bin
>     stderr=subprocess.PIPE)
>   File "/usr/lib/python3.5/subprocess.py", line 947, in __init__
>     restore_signals, start_new_session)
>   File "/usr/lib/python3.5/subprocess.py", line 1551, in _execute_child
>     raise child_exception_type(errno_num, err_msg)
> FileNotFoundError: [Errno 2] No such file or directory: './linux'
> ```
>
> This error occurs because the '--build_dir' option value is not passed
> to the 'run_kernel()' function.  Consequently, the function assumes
> the kernel image that built for the tests, which is under the
> '--build_dir' directory, is in kernel source directory and finally raises
> the 'FileNotFoundError'.
>
> This commit fixes the problem by properly passing the '--build_dir'
> option value to the 'run_kernel()'.
>
> Signed-off-by: SeongJae Park <sj38.park@...il.com>

Reviewed-by: Brendan Higgins <brendanhiggins@...gle.com>
Tested-by: Brendan Higgins <brendanhiggins@...gle.com>

Thanks!