# git rev-parse -q --verify bfeffd155283772bbe78c6a05dec7c0128ee500c^{commit}
bfeffd155283772bbe78c6a05dec7c0128ee500c
already have revision, skipping fetch
# git checkout -q -f -B kisskb bfeffd155283772bbe78c6a05dec7c0128ee500c
# git clean -qxdf
# < git log -1
# commit bfeffd155283772bbe78c6a05dec7c0128ee500c
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Jan 6 17:08:20 2019 -0800
# 
#     Linux 5.0-rc1
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 bfeffd155283772bbe78c6a05dec7c0128ee500c
# < make -s -j 48 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# make -s -j 48 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  
You are building kernel with non-retpoline compiler.
Please update your compiler.
make[1]: *** [arch/x86/Makefile:300: checkbin] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:152: sub-make] Error 2
Command 'make -s -j 48 ARCH=x86 O=/kisskb/build/linus_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_x86_64_defconfig_x86_64
# Build took: 0:00:02.889436