Re: [next] powerpc: multiple definition of `____cacheline_aligned'; sound/core/oss/pcm_oss.o:(.bss+0x40): first defined here

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Le 03/05/2022 à 15:10, Christophe Leroy a écrit :


Le 29/04/2022 à 16:45, Naresh Kamboju a écrit :
Following powerpc builds failed on Linux next-20220428 and next-20220429.

Regressions found on powerpc:
    - gcc-11-ppc64e_defconfig
    - gcc-10-ppc64e_defconfig
    - gcc-9-ppc64e_defconfig
    - gcc-8-ppc64e_defconfig
    - clang-14-ppc64e_defconfig
    - clang-nightly-ppc64e_defconfig
    - clang-13-ppc64e_defconfig


Build error:
-------------
Error: Section .bss not empty in prom_init.c
make[3]: *** [arch/powerpc/kernel/Makefile:191:
arch/powerpc/kernel/prom_init_check] Error 1
make[3]: Target '__build' not remade because of errors.
make[2]: *** [scripts/Makefile.build:595: arch/powerpc/kernel] Error 2
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1996: arch/powerpc] Error 2
powerpc64le-linux-gnu-ld: sound/core/oss/pcm_plugin.o:(.bss+0x0):
multiple definition of `____cacheline_aligned';
sound/core/oss/pcm_oss.o:(.bss+0x40): first defined here
make[4]: *** [scripts/Makefile.build:530: sound/core/oss/snd-pcm-oss.o] Error 1
make[4]: Target '__build' not remade because of errors.
make[3]: *** [scripts/Makefile.build:595: sound/core/oss] Error 2
powerpc64le-linux-gnu-ld: sound/core/seq/seq_clientmgr.o:(.bss+0x900):
multiple definition of `____cacheline_aligned';
sound/core/seq/seq_lock.o:(.bss+0x0): first defined here
powerpc64le-linux-gnu-ld: sound/core/seq/seq_memory.o:(.bss+0x0):
multiple definition of `____cacheline_aligned';
sound/core/seq/seq_lock.o:(.bss+0x0): first defined here
powerpc64le-linux-gnu-ld: sound/core/seq/seq_queue.o:(.bss+0x140):
multiple definition of `____cacheline_aligned';
sound/core/seq/seq_lock.o:(.bss+0x0): first defined here
powerpc64le-linux-gnu-ld: sound/core/seq/seq_fifo.o:(.bss+0x0):
multiple definition of `____cacheline_aligned';
sound/core/seq/seq_lock.o:(.bss+0x0): first defined here
powerpc64le-linux-gnu-ld: sound/core/seq/seq_timer.o:(.bss+0x0):
multiple definition of `____cacheline_aligned';
sound/core/seq/seq_lock.o:(.bss+0x0): first defined here
powerpc64le-linux-gnu-ld: sound/core/seq/seq_system.o:(.bss+0x0):
multiple definition of `____cacheline_aligned';
sound/core/seq/seq_lock.o:(.bss+0x0): first defined here
powerpc64le-linux-gnu-ld: sound/core/seq/seq_ports.o:(.bss+0x0):
multiple definition of `____cacheline_aligned';
sound/core/seq/seq_lock.o:(.bss+0x0): first defined here
powerpc64le-linux-gnu-ld: sound/core/seq/seq_info.o:(.bss+0x40):
multiple definition of `____cacheline_aligned';
sound/core/seq/seq_lock.o:(.bss+0x0): first defined here
make[4]: *** [scripts/Makefile.build:530: sound/core/seq/snd-seq.o] Error 1
make[4]: Target '__build' not remade because of errors.


Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>


steps to reproduce:
-------------------
# To install tuxmake on your system globally:
# sudo pip3 install -U tuxmake

tuxmake --runtime podman --target-arch powerpc --toolchain gcc-11
--kconfig ppc64e_defconfig

--
Linaro LKFT
https://lkft.linaro.org

[1] https://builds.tuxbuild.com/28Sn15hB2la1PweieGMLrUdbFMQ/

Bisected to:

366e7b61ca1f115d38138236467068d8aacabcbc is the first bad commit
commit 366e7b61ca1f115d38138236467068d8aacabcbc
Author: Peter Collingbourne <pcc@xxxxxxxxxx>
Date:   Fri Apr 29 14:42:51 2022 -0700

     printk: stop including cache.h from printk.h

     An inclusion of cache.h in printk.h was added in 2014 in commit
     c28aa1f0a847 ("printk/cache: mark printk_once test variable
    __read_mostly") in order to bring in the definition of __read_mostly.  The     usage of __read_mostly was later removed in commit 3ec25826ae33 ("printk:     Tie printk_once / printk_deferred_once into .data.once for reset") which
     made the inclusion of cache.h unnecessary, so remove it.

    We have a small amount of code that depended on the inclusion of cache.h
     from printk.h; fix that code to include the appropriate header.

    This fixes a circular inclusion on arm64 (linux/printk.h -> linux/cache.h
     -> asm/cache.h -> linux/kasan-enabled.h -> linux/static_key.h ->
     linux/jump_label.h -> linux/bug.h -> asm/bug.h -> linux/printk.h) that
     would otherwise be introduced by the next patch.

     Build tested using {allyesconfig,defconfig} x {arm64,x86_64}.

    Link: https://linux-review.googlesource.com/id/I8fd51f72c9ef1f2d6afd3b2cbc875aa4792c1fba     Link: https://lkml.kernel.org/r/20220427195820.1716975-1-pcc@xxxxxxxxxx
     Signed-off-by: Peter Collingbourne <pcc@xxxxxxxxxx>
     Cc: Alexander Potapenko <glider@xxxxxxxxxx>
     Cc: Andrey Konovalov <andreyknvl@xxxxxxxxx>
     Cc: Andrey Ryabinin <ryabinin.a.a@xxxxxxxxx>
     Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
     Cc: David Rientjes <rientjes@xxxxxxxxxx>
     Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
     Cc: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
     Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
     Cc: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
     Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
     Cc: Kees Cook <keescook@xxxxxxxxxxxx>
     Cc: Pekka Enberg <penberg@xxxxxxxxxx>
     Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
     Cc: Vlastimil Babka <vbabka@xxxxxxx>
     Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>

  arch/arm64/include/asm/mte-kasan.h | 1 +
  arch/arm64/include/asm/percpu.h    | 1 +
  arch/csky/include/asm/processor.h  | 2 +-
  drivers/firmware/smccc/kvm_guest.c | 1 +
  include/linux/printk.h             | 1 -
  kernel/bpf/bpf_lru_list.h          | 1 +
  6 files changed, 5 insertions(+), 2 deletions(-)


I think you need to fix all files that use ____cacheline_aligned without including linux/cache.h

You can locate them with:

	git grep -L linux/cache.h `git grep -l ____cacheline_aligned `


Christophe



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