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

[Stephen Rothwell]

Hi all,

On Tue, 19 Aug 2025 15:44:52 +0800 David Gow <davidgow@xxxxxxxxxx> wrote:
>
> On Tue, 19 Aug 2025 at 00:32, Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx> wrote:
> >
> > On 8/17/25 20:08, Stephen Rothwell wrote:  
> > >
> > > 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@xxxxxxxxxx/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.

I am still seeing this build failure.

-- 
Cheers,
Stephen Rothwell

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