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Date:   Mon, 4 Apr 2022 09:57:19 -0700
From:   Nathan Chancellor <nathan@kernel.org>
To:     Naresh Kamboju <naresh.kamboju@linaro.org>
Cc:     Linux-Next Mailing List <linux-next@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        linux-riscv <linux-riscv@lists.infradead.org>,
        lkft-triage@lists.linaro.org, regressions@lists.linux.dev,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Guo Ren <guoren@linux.alibaba.com>,
        Guo Ren <guoren@kernel.org>,
        Palmer Dabbelt <palmer@rivosinc.com>,
        Heiko Stuebner <heiko@sntech.de>,
        Arnd Bergmann <arnd@arndb.de>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Albert Ou <aou@eecs.berkeley.edu>
Subject: Re: [next] riscv: Linux next-20220404 riscv defconfig builds failed.
Message-ID: <Yksjb9Mkq658k4YJ@dev-arch.thelio-3990X>
References: <CA+G9fYu_ZHOeOPDiwzXGL6Re8aFYW3K+JSL2Dozw=VHwaUFxyQ@mail.gmail.com>
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On Mon, Apr 04, 2022 at 03:28:41PM +0530, Naresh Kamboju wrote:
> Linux next-20220404 riscv defconfig builds failed.
> 
> Regressions found on riscv:
>    - riscv-riscv-clang-14-defconfig
>    - riscv-riscv-gcc-10-defconfig
>    - riscv-riscv-clang-13-defconfig
>    - riscv-riscv-clang-12-defconfig
>    - riscv-riscv-clang-11-defconfig
>    - riscv-riscv-gcc-11-defconfig
>    - riscv-riscv-gcc-8-defconfig
>    - riscv-riscv-gcc-9-defconfig
>    - riscv-riscv-clang-nightly-defconfig
> 
> 
> arch/riscv/kernel/compat_signal.c:7:10: fatal error:
> linux/tracehook.h: No such file or directory
>   7 | #include <linux/tracehook.h>
>     |          ^~~~~~~~~~~~~~~~~~~
> compilation terminated.
> make[3]: *** [scripts/Makefile.build:289:
> arch/riscv/kernel/compat_signal.o] Error 1

For what it's worth, I also see:

$ make -skj"$(nproc)" ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- defconfig all
arch/riscv/kernel/compat_vdso/compat_vdso.lds.S:3:10: fatal error: ../vdso/vdso.lds.S: No such file or directory
    3 | #include <../vdso/vdso.lds.S>
      |          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [scripts/Makefile.build:462: arch/riscv/kernel/compat_vdso/compat_vdso.lds] Error 1
arch/riscv/kernel/compat_vdso/rt_sigreturn.S:3:10: fatal error: ../vdso/rt_sigreturn.S: No such file or directory
    3 | #include <../vdso/rt_sigreturn.S>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
arch/riscv/kernel/compat_vdso/note.S:3:10: fatal error: ../vdso/note.S: No such file or directory
    3 | #include <../vdso/note.S>
      |          ^~~~~~~~~~~~~~~~
compilation terminated.
arch/riscv/kernel/compat_vdso/getcpu.S:3:10: fatal error: ../vdso/getcpu.S: No such file or directory
    3 | #include <../vdso/getcpu.S>
      |          ^~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [arch/riscv/kernel/compat_vdso/Makefile:43: arch/riscv/kernel/compat_vdso/rt_sigreturn.o] Error 1
make[2]: *** [arch/riscv/kernel/compat_vdso/Makefile:43: arch/riscv/kernel/compat_vdso/note.o] Error 1
make[2]: *** [arch/riscv/kernel/compat_vdso/Makefile:43: arch/riscv/kernel/compat_vdso/getcpu.o] Error 1
arch/riscv/kernel/compat_vdso/flush_icache.S:3:10: fatal error: ../vdso/flush_icache.S: No such file or directory
    3 | #include <../vdso/flush_icache.S>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [arch/riscv/kernel/compat_vdso/Makefile:43: arch/riscv/kernel/compat_vdso/flush_icache.o] Error 1

I am guessing this code was never tested with $(srctree) == $(objtree).

Cheers,
Nathan