# git rev-parse -q --verify 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c^{commit}
6a8b55ed4056ea5559ebe4f6a4b247f627870d4c
already have revision, skipping fetch
# git checkout -q -f -B kisskb 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c
# git clean -qxdf
# < git log -1
# commit 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Apr 26 13:51:02 2020 -0700
# 
#     Linux 5.7-rc3
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 6a8b55ed4056ea5559ebe4f6a4b247f627870d4c
# < make -s -j 8 ARCH=arm O=/kisskb/build/linus_tct_hammer_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  tct_hammer_defconfig
# < make -s -j 8 ARCH=arm O=/kisskb/build/linus_tct_hammer_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  help
# make -s -j 8 ARCH=arm O=/kisskb/build/linus_tct_hammer_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  olddefconfig
# make -s -j 8 ARCH=arm O=/kisskb/build/linus_tct_hammer_defconfig_arm-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/arm-linux-gnueabi/bin/arm-linux-gnueabi-  
/kisskb/src/kernel/futex.c: In function 'do_futex':
/kisskb/src/kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return oldval == cmparg;
                 ^
/kisskb/src/kernel/futex.c:1652:6: note: 'oldval' was declared here
  int oldval, ret;
      ^
Completed OK
# rm -rf /kisskb/build/linus_tct_hammer_defconfig_arm-gcc4.9
# Build took: 0:00:44.330825