# git rev-parse -q --verify d2d09fbe33f80ec17536b6a687ac5274feb927c7^{commit}
d2d09fbe33f80ec17536b6a687ac5274feb927c7
already have revision, skipping fetch
# git checkout -q -f -B kisskb d2d09fbe33f80ec17536b6a687ac5274feb927c7
# git clean -qxdf
# < git log -1
# commit d2d09fbe33f80ec17536b6a687ac5274feb927c7
# Merge: 24dfc390079c c6f87141254d
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Apr 25 09:48:46 2021 -0700
# 
#     Merge tag 'perf-tools-fixes-for-v5.12-2021-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux
#     
#     Pull perf tools fixes from Arnaldo Carvalho de Melo:
#     
#      - Fix potential NULL pointer dereference in the auxtrace option parser
#     
#      - Fix access to PID in an array when setting a PID filter in 'perf ftrace'
#     
#      - Fix error return code in the 'perf data' tool and in maps__clone(),
#        found using a static analysis tool from Huawei
#     
#     * tag 'perf-tools-fixes-for-v5.12-2021-04-25' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
#       perf map: Fix error return code in maps__clone()
#       perf ftrace: Fix access to pid in array when setting a pid filter
#       perf auxtrace: Fix potential NULL pointer dereference
#       perf data: Fix error return code in perf_data__create_dir()
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 d2d09fbe33f80ec17536b6a687ac5274feb927c7
# < make -s -j 32 ARCH=s390 O=/kisskb/build/linus_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  defconfig
# < make -s -j 32 ARCH=s390 O=/kisskb/build/linus_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 32 ARCH=s390 O=/kisskb/build/linus_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  olddefconfig
# make -s -j 32 ARCH=s390 O=/kisskb/build/linus_s390-defconfig_s390x-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/s390-linux/bin/s390-linux-  
Completed OK
# rm -rf /kisskb/build/linus_s390-defconfig_s390x-gcc8
# Build took: 0:05:46.897121