# git rev-parse -q --verify 7b56fbd83e261484da43f04090bce07570bd117f^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 7b56fbd83e261484da43f04090bce07570bd117f^{commit}
7b56fbd83e261484da43f04090bce07570bd117f
# git checkout -q -f -B kisskb 7b56fbd83e261484da43f04090bce07570bd117f
# git clean -qxdf
# < git log -1
# commit 7b56fbd83e261484da43f04090bce07570bd117f
# Merge: 4312e0e8d3ea cb05143bdf42
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Nov 1 11:21:26 2020 -0800
# 
#     Merge tag 'x86-urgent-2020-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
#     
#     Pull x86 fixes from Thomas Gleixner:
#      "Three fixes all related to #DB:
#     
#        - Handle the BTF bit correctly so it doesn't get lost due to a kernel
#          #DB
#     
#        - Only clear and set the virtual DR6 value used by ptrace on user
#          space triggered #DB. A kernel #DB must leave it alone to ensure
#          data consistency for ptrace.
#     
#        - Make the bitmasking of the virtual DR6 storage correct so it does
#          not lose DR_STEP"
#     
#     * tag 'x86-urgent-2020-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
#       x86/debug: Fix DR_STEP vs ptrace_get_debugreg(6)
#       x86/debug: Only clear/set ->virtual_dr6 for userspace #DB
#       x86/debug: Fix BTF handling
# < /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 7b56fbd83e261484da43f04090bce07570bd117f
# < make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  randconfig
KCONFIG_SEED=0x4A989B5C
# 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 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_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 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
.config:4053:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  

Auto-detecting system features:
...                        libelf: [ on  ]
...                          zlib: [ on  ]
...                           bpf: [ on  ]

/usr/bin/env: 'python3': No such file or directory
make[4]: *** [Makefile:181: /kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8/tools/bpf/resolve_btfids/bpf_helper_defs.h] Error 127
make[4]: *** Deleting file '/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8/tools/bpf/resolve_btfids/bpf_helper_defs.h'
make[3]: *** [Makefile:56: /kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8/tools/bpf/resolve_btfids//libbpf.a] Error 2
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [Makefile:71: bpf/resolve_btfids] Error 2
make[1]: *** [/kisskb/src/Makefile:1925: tools/bpf/resolve_btfids] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 24 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_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/linus-rand_x86_64-randconfig_x86_64-gcc8
# Build took: 0:00:12.318543