# git rev-parse -q --verify 510c9788991c58827373bca719d8cffa4d65f846^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 510c9788991c58827373bca719d8cffa4d65f846^{commit}
510c9788991c58827373bca719d8cffa4d65f846
# git checkout -q -f -B kisskb 510c9788991c58827373bca719d8cffa4d65f846
# git clean -qxdf
# < git log -1
# commit 510c9788991c58827373bca719d8cffa4d65f846
# Merge: 07c4b9e9f71a 3d519d6d388b
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Dec 14 16:10:22 2019 -0800
# 
#     Merge tag 'Wimplicit-fallthrough-5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux
#     
#     Pull fall through fix from Gustavo Silva:
#      "Fix compile error on sh by marking expected switch fall-through"
#     
#     * tag 'Wimplicit-fallthrough-5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
#       sh: kgdb: Mark expected switch fall-throughs
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 510c9788991c58827373bca719d8cffa4d65f846
# < make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  randconfig
KCONFIG_SEED=0xAA84326F
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# yes \n | make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  
You are building kernel with non-retpoline compiler.
Please update your compiler.
make[1]: *** [arch/x86/Makefile:309: checkbin] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_x86_64-randconfig_um-x86_64
# Build took: 0:00:08.576534