# git rev-parse -q --verify 6fb31b79ec7223a8e7a39d4b901358a2900b8902^{commit}
6fb31b79ec7223a8e7a39d4b901358a2900b8902
already have revision, skipping fetch
# git checkout -q -f -B kisskb 6fb31b79ec7223a8e7a39d4b901358a2900b8902
# git clean -qxdf
# < git log -1
# commit 6fb31b79ec7223a8e7a39d4b901358a2900b8902
# Author: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
# Date:   Sat Jan 5 10:01:33 2019 +0100
# 
#     Linux 4.20.1-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 6fb31b79ec7223a8e7a39d4b901358a2900b8902
# < make -s -j 120 ARCH=x86 O=/kisskb/build/stable-rc-4.20_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 120 ARCH=x86 O=/kisskb/build/stable-rc-4.20_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:304: checkbin] Error 1
make: *** [Makefile:152: sub-make] Error 2
Command 'make -s -j 120 ARCH=x86 O=/kisskb/build/stable-rc-4.20_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/stable-rc-4.20_x86_64_defconfig_x86_64
# Build took: 0:00:04.038275