linux-kernel - Re: linux-next: build failure after merge of the kunit-next tree

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Message-ID: <CABVgOSm2_FGfjQpUBttuUH5ZrMEqnaGkYVkN6N96wX7Qs8EE2Q@mail.gmail.com>
Date: Tue, 19 Aug 2025 15:44:52 +0800
From: David Gow <davidgow@...gle.com>
To: Shuah Khan <skhan@...uxfoundation.org>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>, Marie Zhussupova <marievic@...gle.com>, 
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, 
	KUnit Development <kunit-dev@...glegroups.com>, 
	Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the kunit-next tree

On Tue, 19 Aug 2025 at 00:32, Shuah Khan <skhan@...uxfoundation.org> wrote:
>
> On 8/17/25 20:08, Stephen Rothwell wrote:
> > Hi all,
> >
> > After merging the kunit-next tree, today's linux-next build (x86_64
> > allmodconfig) failed like this:
>
> Thank you Stephen. I did a allmodconfig build on 6.17-rc1 base - didn't
> see the error.
>
> Marie, David, can you take a look this. Looks like conflict with drm
> in next?
>

Thanks, Shuah. I've managed to reproduce this with:
./tools/testing/kunit/kunit.py run --arch x86_64 --kunitconfig
drivers/gpu/drm/xe

These patches fix it (and a corresponding drm/xe test failure):
https://lore.kernel.org/linux-next/20250819073434.1411114-1-davidgow@google.com/T/#t

Ideally, they'll be squashed into the corresponding patches, as
otherwise there'd be some temporary breakage during bisections. I can
squash these into the original series and re-send it out if that works
best for you.

Cheers,
-- David

> >
> > In file included from include/kunit/static_stub.h:18,
> >                   from drivers/gpu/drm/xe/xe_bo.c:20:
> > drivers/gpu/drm/xe/tests/xe_bo.c:610:48: error: initialization of 'const void * (*)(struct kunit *, const void *, char *)' from incompatible pointer type 'const void * (*)(const void *, char *)' [-Wincompatible-pointer-types]
> >    610 |         KUNIT_CASE_PARAM(xe_ccs_migrate_kunit, xe_pci_live_device_gen_param),
> >        |                                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > include/kunit/test.h:210:38: note: in definition of macro 'KUNIT_CASE_PARAM'
> >    210 |                   .generate_params = gen_params, .module_name = KBUILD_MODNAME}
> >        |                                      ^~~~~~~~~~
> > drivers/gpu/drm/xe/tests/xe_bo.c:610:48: note: (near initialization for 'xe_bo_tests[0].generate_params')
> >    610 |         KUNIT_CASE_PARAM(xe_ccs_migrate_kunit, xe_pci_live_device_gen_param),
> >        |                                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > include/kunit/test.h:210:38: note: in definition of macro 'KUNIT_CASE_PARAM'
> >    210 |                   .generate_params = gen_params, .module_name = KBUILD_MODNAME}
> >        |                                      ^~~~~~~~~~
> > drivers/gpu/drm/xe/tests/xe_bo.c:611:45: error: initialization of 'const void * (*)(struct kunit *, const void *, char *)' from incompatible pointer type 'const void * (*)(const void *, char *)' [-Wincompatible-pointer-types]
> >    611 |         KUNIT_CASE_PARAM(xe_bo_evict_kunit, xe_pci_live_device_gen_param),
> >        |                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > include/kunit/test.h:210:38: note: in definition of macro 'KUNIT_CASE_PARAM'
> >    210 |                   .generate_params = gen_params, .module_name = KBUILD_MODNAME}
> >        |                                      ^~~~~~~~~~
> > drivers/gpu/drm/xe/tests/xe_bo.c:611:45: note: (near initialization for 'xe_bo_tests[1].generate_params')
> >    611 |         KUNIT_CASE_PARAM(xe_bo_evict_kunit, xe_pci_live_device_gen_param),
> >        |                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > include/kunit/test.h:210:38: note: in definition of macro 'KUNIT_CASE_PARAM'
> >    210 |                   .generate_params = gen_params, .module_name = KBUILD_MODNAME}
> >        |                                      ^~~~~~~~~~
> > drivers/gpu/drm/xe/tests/xe_bo.c:624:51: error: initialization of 'const void * (*)(struct kunit *, const void *, char *)' from incompatible pointer type 'const void * (*)(const void *, char *)' [-Wincompatible-pointer-types]
> >    624 |         KUNIT_CASE_PARAM_ATTR(xe_bo_shrink_kunit, xe_pci_live_device_gen_param,
> >        |                                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > include/kunit/test.h:223:38: note: in definition of macro 'KUNIT_CASE_PARAM_ATTR'
> >    223 |                   .generate_params = gen_params,                                \
> >        |                                      ^~~~~~~~~~
> > drivers/gpu/drm/xe/tests/xe_bo.c:624:51: note: (near initialization for 'xe_bo_shrink_test[0].generate_params')
> >    624 |         KUNIT_CASE_PARAM_ATTR(xe_bo_shrink_kunit, xe_pci_live_device_gen_param,
> >        |                                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > include/kunit/test.h:223:38: note: in definition of macro 'KUNIT_CASE_PARAM_ATTR'
> >    223 |                   .generate_params = gen_params,                                \
> >        |                                      ^~~~~~~~~~
> >
> > Caused by commit
> >
> >    444be9072fca ("kunit: Pass parameterized test context to generate_params()")
> >
> > I have used the kunit-next tree from next-20250815 for today.
> >
>
> thanks,
> -- Shuah
>

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