Re: [lkp-robot] [android/ion] 5fb70554d6: kernel_selftests.android.make_fail

[Pintu Kumar]

On Tue, Oct 31, 2017 at 2:32 AM, Laura Abbott <labbott@xxxxxxxxxx> wrote:
> On 10/30/2017 12:12 AM, Pintu Kumar wrote:
>> On Sun, Oct 29, 2017 at 7:51 PM, kernel test robot
>> <xiaolong.ye@xxxxxxxxx> wrote:
>>>
>>> FYI, we noticed the following commit (built with gcc-6):
>>>
>>> commit: 5fb70554d68e2ea032b6a28b082801d8b7b76cb8 ("android/ion: userspace test utility for ion buffer sharing")
>>> url: https://github.com/0day-ci/linux/commits/Pintu-Agarwal/android-ion-userspace-test-utility-for-ion-buffer-sharing/20171025-022548
>>>
>>>
>>> in testcase: kernel_selftests
>>> with following parameters:
>>>
>>>
>>> test-description: The kernel contains a set of "self tests" under the tools/testing/selftests/ directory. These are intended to be small unit tests to exercise individual code paths in the kernel.
>>> test-url: https://www.kernel.org/doc/Documentation/kselftest.txt
>>>
>>>
>>> on test machine: 88 threads Intel(R) Xeon(R) CPU E5-2699 v4 @ 2.20GHz with 64G memory
>>>
>>> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
>>>
>>>
>>>
>>>
>>> KERNEL SELFTESTS: linux_headers_dir is /usr/src/linux-headers-x86_64-rhel-7.2-5fb70554d68e2ea032b6a28b082801d8b7b76cb8
>>> 2017-10-26 22:18:16 ln -sf /usr/bin/gcc-5 /usr/bin/gcc
>>>
>>> 2017-10-26 22:18:16 make run_tests -C android
>>> make: Entering directory '/usr/src/linux-selftests-x86_64-rhel-7.2-5fb70554d68e2ea032b6a28b082801d8b7b76cb8/tools/testing/selftests/android'
>>> make[1]: Entering directory '/usr/src/linux-selftests-x86_64-rhel-7.2-5fb70554d68e2ea032b6a28b082801d8b7b76cb8/tools/testing/selftests/android/ion'
>>> gcc  -I../../../../../drivers/staging/android/uapi/ -Wall -O2 -g    ionapp_export.c ipcsocket.c ionutils.c   -o ionapp_export
>>> In file included from ionapp_export.c:28:0:
>>> ionutils.h:4:17: fatal error: ion.h: No such file or directory
>>> compilation terminated.
>>> In file included from ionutils.c:9:0:
>>> ionutils.h:4:17: fatal error: ion.h: No such file or directory
>>> compilation terminated.
>>
>> This utility requires ion.h header file which should be included from
>> kernel source tree: drivers/staging/android/ion/uapi/
>> This is already mentioned in the ion/Makefile
>> Looks like this ion.h is not getting included inside the linux_headers_dir ?
>>
>> Shall I include the ion.h locally in my selftests?
>> Or, is there a better way to include the header directly...
>>
>>
>
>
> I can't reproduce this in any of my environments but if I had to guess,
> it's because you have
>
> #include "ion.h"
>
> which is supposed to look in the local path.
>

I don't think this is the problem.
It just means, first it will look into the local path, then it will
look into the include path which is specified in the Makefile.
And, in the Makefile I have already included the path where it exists.
INCLUDEDIR := -I../../../../../drivers/staging/android/uapi/

I think the problem is in general, and not specific to this test.
Because, when I manually try to install the kernel headers, I could
not find the "ion.h" there, or none of the headers from
drivers/staging/android/
# make headers_install ARCH=i386 INSTALL_HDR_PATH=../headers/

But, I can see the drivers/android/ header files.

Now the question is, how to include the header files from staging
folder to kernel headers ?

As per reference from some other selftests (such as: gpio/Makefile,
vm/Makefile, etc.), I also tried the following.

../../../../../drivers/staging/android/uapi/ion.h:
        make -C ../../../../.. headers_install
INSTALL_HDR_PATH=$(shell pwd)/../../../../usr/

But this also does not help in installing the ion.h header file in
kernel_header path.

Any other pointers to fix this issue ?


Thanks,
Pintu


> Thanks,
> Laura