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Section warnings on x86 with clang-10 #1193

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broonie opened this issue Nov 9, 2020 · 2 comments
Closed

Section warnings on x86 with clang-10 #1193

broonie opened this issue Nov 9, 2020 · 2 comments
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duplicate This issue or pull request already exists

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@broonie
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broonie commented Nov 9, 2020

Huge numbers of warnings in the form

ld.lld: warning: arch/x86/kernel/head_64.o:(.rela.data) is being placed in '.rela.data'

are being generated on -next builds with clang-10 for an x86_64 defconfig: when built with ld.ldd and LLVM=1. Full report:

https://storage.kernelci.org//next/master/next-20201103/x86_64/x86_64_defconfig/clang-10/build-warnings.log

@gctucker
@nickdesaulniers
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dup #1187

@nickdesaulniers nickdesaulniers added the duplicate This issue or pull request already exists label Nov 9, 2020
ruscur pushed a commit to ruscur/linux that referenced this issue Nov 13, 2020
@nathanchance
kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1
0fa0fe7 
ld.lld 10.0.1 spews a bunch of various warnings about .rela sections,
along with a few others. Newer versions of ld.lld do not have these
warnings. As a result, do not add '--orphan-handling=warn' to
LDFLAGS_vmlinux if ld.lld's version is not new enough.

Reported-by: Arvind Sankar <nivedita@alum.mit.edu>
Reported-by: kernelci.org bot <bot@kernelci.org>
Reported-by: Mark Brown <broonie@kernel.org>
Link: ClangBuiltLinux#1187
Link: ClangBuiltLinux#1193
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
fengguang pushed a commit to 0day-ci/linux that referenced this issue Nov 13, 2020
@nathanchance @intel-lab-lkp
kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1
c5d9708 
ld.lld 10.0.1 spews a bunch of various warnings about .rela sections,
along with a few others. Newer versions of ld.lld do not have these
warnings. As a result, do not add '--orphan-handling=warn' to
LDFLAGS_vmlinux if ld.lld's version is not new enough.

Reported-by: Arvind Sankar <nivedita@alum.mit.edu>
Reported-by: kernelci.org bot <bot@kernelci.org>
Reported-by: Mark Brown <broonie@kernel.org>
Link: ClangBuiltLinux#1187
Link: ClangBuiltLinux#1193
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
@amfwaddi
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Hi Mr. Brown,

You are receiving this because I'm greenest of newbs and didn't know where else to put it.

A GIANT KUDO!!

My humble Acer270 has gone from 34fps to 185fps with the new intel-drm gma500drmfb.

Thanks for your work!!

Andrew Waddington

ruscur pushed a commit to ruscur/linux that referenced this issue Nov 25, 2020
@nathanchance @kees
orphans: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1
f2f20a9 
ld.lld 10.0.1 spews a bunch of various warnings about .rela sections,
along with a few others. Newer versions of ld.lld do not have these
warnings. As a result, do not add '--orphan-handling=warn' to
LDFLAGS_vmlinux if ld.lld's version is not new enough.

Link: ClangBuiltLinux#1187
Link: ClangBuiltLinux#1193
Reported-by: Arvind Sankar <nivedita@alum.mit.edu>
Reported-by: kernelci.org bot <bot@kernelci.org>
Reported-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20201119204656.3261686-2-natechancellor@gmail.com
ruscur pushed a commit to ruscur/linux that referenced this issue Dec 3, 2020
@nathanchance @masahir0y
kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1
d5750cd 
ld.lld 10.0.1 spews a bunch of various warnings about .rela sections,
along with a few others. Newer versions of ld.lld do not have these
warnings. As a result, do not add '--orphan-handling=warn' to
LDFLAGS_vmlinux if ld.lld's version is not new enough.

Link: ClangBuiltLinux#1187
Link: ClangBuiltLinux#1193
Reported-by: Arvind Sankar <nivedita@alum.mit.edu>
Reported-by: kernelci.org bot <bot@kernelci.org>
Reported-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Kendrenogen pushed a commit to Kendrenogen/android_kernel_lge_sm8150 that referenced this issue Mar 26, 2024
@nathanchance @Kendrenogen
kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1
f4a8666 
ld.lld 10.0.1 spews a bunch of various warnings about .rela sections,
along with a few others. Newer versions of ld.lld do not have these
warnings. As a result, do not add '--orphan-handling=warn' to
LDFLAGS_vmlinux if ld.lld's version is not new enough.

Link: ClangBuiltLinux/linux#1187
Link: ClangBuiltLinux/linux#1193
Reported-by: Arvind Sankar <nivedita@alum.mit.edu>
Reported-by: kernelci.org bot <bot@kernelci.org>
Reported-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Kendrenogen pushed a commit to Kendrenogen/android_kernel_lge_sm8150 that referenced this issue May 7, 2024
@nathanchance @Kendrenogen
kbuild: Disable CONFIG_LD_ORPHAN_WARN for ld.lld 10.0.1
55cccfd 
ld.lld 10.0.1 spews a bunch of various warnings about .rela sections,
along with a few others. Newer versions of ld.lld do not have these
warnings. As a result, do not add '--orphan-handling=warn' to
LDFLAGS_vmlinux if ld.lld's version is not new enough.

Link: ClangBuiltLinux/linux#1187
Link: ClangBuiltLinux/linux#1193
Reported-by: Arvind Sankar <nivedita@alum.mit.edu>
Reported-by: kernelci.org bot <bot@kernelci.org>
Reported-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
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@broonie @nickdesaulniers @amfwaddi