linux-kernel - Re: gpu: drm_fb_cma_helper.c:46: undefined reference to `drm_gem_fb_get

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Message-ID: <b26491f8-66a4-d532-e866-2dc0ecb922d2@suse.de>
Date:   Tue, 26 Oct 2021 19:59:40 +0200
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>,
        dri-devel@...ts.freedesktop.org,
        open list <linux-kernel@...r.kernel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>
Cc:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Andrey Konovalov <andreyknvl@...il.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Arnd Bergmann <arnd@...db.de>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Daniel Vetter <daniel.vetter@...ll.ch>
Subject: Re: gpu: drm_fb_cma_helper.c:46: undefined reference to
 `drm_gem_fb_get_obj'

Hi

Am 25.10.21 um 16:01 schrieb Naresh Kamboju:
> On Mon, 25 Oct 2021 at 17:43, Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
>>
>> Regression found on arm gcc-11 built with multi_v5_defconfig
>> Following build warnings / errors reported on linux next 20211025.
>>
>> metadata:
>>      git_describe: next-20211025
>>      git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
>>      git_short_log: 9ae1fbdeabd3 (\"Add linux-next specific files for 20211025\")
>>      target_arch: arm
>>      toolchain: gcc-11
>>      config: multi_v5_defconfig
>>
>> build error :
>> --------------
>> arm-linux-gnueabihf-ld: drivers/gpu/drm/drm_fb_cma_helper.o: in
>> function `drm_fb_cma_get_gem_obj':
>> drivers/gpu/drm/drm_fb_cma_helper.c:46: undefined reference to
>> `drm_gem_fb_get_obj'
>> arm-linux-gnueabihf-ld: drivers/gpu/drm/drm_fb_cma_helper.c:46:
>> undefined reference to `drm_gem_fb_get_obj'
>> arm-linux-gnueabihf-ld: drivers/gpu/drm/drm_fb_cma_helper.c:46:
>> undefined reference to `drm_gem_fb_get_obj'
>> arm-linux-gnueabihf-ld: drivers/gpu/drm/drm_fb_cma_helper.o: in
>> function `drm_fb_cma_sync_non_coherent':
>> drivers/gpu/drm/drm_fb_cma_helper.c:133: undefined reference to
>> `drm_atomic_helper_damage_iter_init'
>> arm-linux-gnueabihf-ld: drivers/gpu/drm/drm_fb_cma_helper.c:135:
>> undefined reference to `drm_atomic_helper_damage_iter_next'
>> make[1]: *** [Makefile:1252: vmlinux] Error 1
>> make[1]: Target '__all' not remade because of errors.
>> make: *** [Makefile:226: __sub-make] Error 2
>>
>> Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
> 
> The bisection script pointed to the first bad commit,
> 
> commit 4b2b5e142ff499a2bef2b8db0272bbda1088a3fe
> drm: Move GEM memory managers into modules

Could you please try the patch at [1]? It fixes the problem for me.

Best regards
Thomas

[1] https://patchwork.freedesktop.org/patch/461426/

> 
>> build link:
>> -----------
>> https://builds.tuxbuild.com/1zzgFZBGjpQ5R0lawQFW9iJ39Hp/build.log
>>
>> build config:
>> -------------
>> https://builds.tuxbuild.com/1zzgFZBGjpQ5R0lawQFW9iJ39Hp/config
>>
>> # To install tuxmake on your system globally
>> # sudo pip3 install -U tuxmake
>> tuxmake --runtime podman --target-arch arm --toolchain gcc-11
>> --kconfig multi_v5_defconfig
>>
>> --
>> Linaro LKFT
>> https://lkft.linaro.org
> 
> - Naresh
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

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