# git rev-parse -q --verify 668f1e9267415153e30bea03828c0530874e92e4^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify 668f1e9267415153e30bea03828c0530874e92e4^{commit}
668f1e9267415153e30bea03828c0530874e92e4
# git checkout -q -f -B kisskb 668f1e9267415153e30bea03828c0530874e92e4
# git clean -qxdf
# < git log -1
# commit 668f1e9267415153e30bea03828c0530874e92e4
# Merge: 397a97946798 e23349af9ee2
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Apr 1 16:11:40 2020 -0700
# 
#     Merge tag 'linux-kselftest-kunit-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
#     
#     Pull kunit updates from Shuah Khan:
#      "This kunit update consists of:
#     
#        - debugfs support for displaying kunit test suite results.
#     
#          This is especially useful for module-loaded tests to allow
#          disentangling of test result display from other dmesg events.
#          CONFIG_KUNIT_DEBUGFS enables/disables the debugfs support.
#     
#        - Several fixes and improvements to kunit framework and tool"
#     
#     * tag 'linux-kselftest-kunit-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
#       kunit: tool: add missing test data file content
#       kunit: update documentation to describe debugfs representation
#       kunit: subtests should be indented 4 spaces according to TAP
#       kunit: add log test
#       kunit: add debugfs /sys/kernel/debug/kunit/<suite>/results display
#       Documentation: kunit: Make the KUnit documentation less UML-specific
#       Fix linked-list KUnit test when run multiple times
#       kunit: kunit_tool: Allow .kunitconfig to disable config items
#       kunit: Always print actual pointer values in asserts
#       kunit: add --make_options
#       kunit: Run all KUnit tests through allyesconfig
#       kunit: kunit_parser: make parser more robust
# < /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 668f1e9267415153e30bea03828c0530874e92e4
# < make -s -j 32 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=0x16953F08
# 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
# < make -s -j 32 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-  help
# make -s -j 32 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-  olddefconfig
.config:5389:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 32 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:310: checkbin] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:180: sub-make] Error 2
Command 'make -s -j 32 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: 0:00:13.112728