# git rev-parse -q --verify 90a353491e9f95516fcfd33ae7331d638557416c^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/mirror/linux-kbuild.git for-next
# git rev-parse -q --verify 90a353491e9f95516fcfd33ae7331d638557416c^{commit}
90a353491e9f95516fcfd33ae7331d638557416c
# git checkout -q -f -B kisskb 90a353491e9f95516fcfd33ae7331d638557416c
# git clean -qxdf
# < git log -1
# commit 90a353491e9f95516fcfd33ae7331d638557416c
# Author: Masahiro Yamada <masahiroy@kernel.org>
# Date:   Tue Aug 31 16:39:57 2021 +0900
# 
#     kbuild: reuse $(cmd_objtool) for cmd_cc_lto_link_modules
#     
#     For CONFIG_LTO_CLANG=y, the objtool processing is not possible at the
#     compilation, hence postponed by the link time.
#     
#     Reuse $(cmd_objtool) for CONFIG_LTO_CLANG=y by defining objtool-enabled
#     properly.
#     
#     For CONFIG_LTO_CLANG=y:
#     
#       objtool-enabled is off for %.o compilation
#       objtool-enabled is on  for %.lto link
#     
#     For CONFIG_LTO_CLANG=n:
#     
#       objtool-enabled is on for %.o compilation
#           (but, it depends on OBJECT_FILE_NON_STANDARD)
#     
#     Set part-of-module := y for %.lto.o to avoid repeating --module.
#     
#     Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
#     Reviewed-by: Kees Cook <keescook@chromium.org>
#     Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 90a353491e9f95516fcfd33ae7331d638557416c
# < make -s -j 10 ARCH=x86 O=/kisskb/build/kbuild_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_SAMPLES=n
# < make -s -j 10 ARCH=x86 O=/kisskb/build/kbuild_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 10 ARCH=x86 O=/kisskb/build/kbuild_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
# make -s -j 10 ARCH=x86 O=/kisskb/build/kbuild_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-objdump: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info
/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-objdump: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info
/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-objdump: mm/kfence/kfence_test.o: File format not recognized
/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info
/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info
/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info
/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld: mm/kfence/kfence_test.o: unable to initialize decompress status for section .debug_info
mm/kfence/kfence_test.o: file not recognized: File format not recognized
make[3]: *** [/kisskb/src/scripts/Makefile.modfinal:59: mm/kfence/kfence_test.ko] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.modpost:140: __modpost] Error 2
make[1]: *** [/kisskb/src/Makefile:1783: modules] Error 2
make: *** [Makefile:219: __sub-make] Error 2
Command 'make -s -j 10 ARCH=x86 O=/kisskb/build/kbuild_x86-allmodconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/kbuild_x86-allmodconfig_x86_64-gcc8
# Build took: 0:38:50.909198