On 10/30/2017 12:12 AM, Pintu Kumar wrote:
> On Sun, Oct 29, 2017 at 7:51 PM, kernel test robot
> <xiaolong.ye@intel.com> 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.

Thanks,
Laura