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From:   youling 257 <youling257@gmail.com>
Date:   Thu, 9 Apr 2020 10:00:53 +0800
Message-ID: <CAOzgRdYkJMiQM9M-UHv5Z-6CLzaV0P8YTK5Ft-CmT5-JqCnYSA@mail.gmail.com>
Subject: Re: Merge branch 'core-objtool-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
To:     viro@zeniv.linux.org.uk, peterz@infradead.org, jpoimboe@redhat.com,
        linux-kernel@vger.kernel.org
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d937a6dfc9428f470c3ce4d459c390944ddef538 caused 64bit kernel build
failed on 32bit userspace.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?=
id=3Dd937a6dfc9428f470c3ce4d459c390944ddef538

2020-04-08 16:13 GMT+08:00, youling 257 <youling257@gmail.com>:
> after this merge branch, build 64bit kernel failed on 32bit userspace.
>
>
>   CC       tools/objtool/builtin-check.o
>   CC       tools/objtool/builtin-orc.o
> In file included from check.h:10,
>                  from builtin-check.c:18:
> elf.h: In function =E2=80=98sec_offset_hash=E2=80=99:
> elf.h:102:14: error: right shift count >=3D width of type
> [-Werror=3Dshift-count-overflow]
>   102 |  oh =3D offset >> 32;
>       |              ^~
> cc1: all warnings being treated as errors
> mv: =E6=97=A0=E6=B3=95=E8=8E=B7=E5=8F=96'tools/objtool/.builtin-check.o.t=
mp' =E7=9A=84=E6=96=87=E4=BB=B6=E7=8A=B6=E6=80=81(stat): =E6=B2=A1=E6=9C=89=
=E9=82=A3=E4=B8=AA=E6=96=87=E4=BB=B6=E6=88=96=E7=9B=AE=E5=BD=95
> make[6]: *** [/tools/build/Makefile.build:97=EF=BC=9Atools/objtool/builti=
n-check.o]
> =E9=94=99=E8=AF=AF 1
> make[6]: *** =E6=AD=A3=E5=9C=A8=E7=AD=89=E5=BE=85=E6=9C=AA=E5=AE=8C=E6=88=
=90=E7=9A=84=E4=BB=BB=E5=8A=A1....
>   HOSTCC  scripts/kallsyms
> In file included from check.h:10,
>                  from builtin-orc.c:17:
> elf.h: In function =E2=80=98sec_offset_hash=E2=80=99:
> elf.h:102:14: error: right shift count >=3D width of type
> [-Werror=3Dshift-count-overflow]
>   102 |  oh =3D offset >> 32;
>       |              ^~
> In file included from arch/x86/decode.c:14:
> arch/x86/../../elf.h: In function =E2=80=98sec_offset_hash=E2=80=99:
> arch/x86/../../elf.h:102:14: error: right shift count >=3D width of type
> [-Werror=3Dshift-count-overflow]
>   102 |  oh =3D offset >> 32;
>       |              ^~
> cc1: all warnings being treated as errors
> mv: =E6=97=A0=E6=B3=95=E8=8E=B7=E5=8F=96'tools/objtool/.builtin-orc.o.tmp=
' =E7=9A=84=E6=96=87=E4=BB=B6=E7=8A=B6=E6=80=81(stat)  CC
> tools/objtool/help.o
> : =E6=B2=A1=E6=9C=89=E9=82=A3=E4=B8=AA=E6=96=87=E4=BB=B6=E6=88=96=E7=9B=
=AE=E5=BD=95
> make[6]: *** [/tools/build/Makefile.build:97=EF=BC=9Atools/objtool/builti=
n-orc.o] =E9=94=99=E8=AF=AF
> 1
>   CC       tools/objtool/pager.o
>   CC       tools/objtool/parse-options.o
>   CC       tools/objtool/run-command.o
>   CC       tools/objtool/sigchain.o
>   HOSTCC  scripts/recordmcount
>   CC       tools/objtool/subcmd-config.o
>   HOSTCC  scripts/sorttable
>   HOSTCC  scripts/asn1_compiler
>   HOSTCC  scripts/extract-cert
>   HOSTLD  scripts/genksyms/genksyms
> cc1: all warnings being treated as errors
> mv: =E6=97=A0=E6=B3=95=E8=8E=B7=E5=8F=96'tools/objtool/arch/x86/.decode.o=
.tmp' =E7=9A=84=E6=96=87=E4=BB=B6=E7=8A=B6=E6=80=81(stat): =E6=B2=A1=E6=9C=
=89=E9=82=A3=E4=B8=AA=E6=96=87=E4=BB=B6=E6=88=96=E7=9B=AE=E5=BD=95
> make[7]: ***
> [/tools/build/Makefile.build:97=EF=BC=9Atools/objtool/arch/x86/decode.o]
> =E9=94=99=E8=AF=AF 1
> make[6]: *** [/tools/build/Makefile.build:139=EF=BC=9Aarch/x86] =E9=94=99=
=E8=AF=AF 2
> make[5]: *** [Makefile:46=EF=BC=9Atools/objtool/objtool-in.o] =E9=94=99=
=E8=AF=AF 2
> make[5]: *** =E6=AD=A3=E5=9C=A8=E7=AD=89=E5=BE=85=E6=9C=AA=E5=AE=8C=E6=88=
=90=E7=9A=84=E4=BB=BB=E5=8A=A1....
>