# git rev-parse -q --verify b8e382a185ebb1bca66bd541e5a0f858b6b9cbb9^{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 b8e382a185ebb1bca66bd541e5a0f858b6b9cbb9^{commit}
b8e382a185ebb1bca66bd541e5a0f858b6b9cbb9
# git checkout -q -f -B kisskb b8e382a185ebb1bca66bd541e5a0f858b6b9cbb9
# git clean -qxdf
# < git log -1
# commit b8e382a185ebb1bca66bd541e5a0f858b6b9cbb9
# Merge: 4746104a6f59 fe6e096a5bbf
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Dec 21 15:16:56 2019 -0800
# 
#     Merge tag 'trace-v5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
#     
#     Pull tracing fixes from Steven Rostedt:
#     
#      - Fix memory leak on error path of process_system_preds()
#     
#      - Lock inversion fix with updating tgid recording option
#     
#      - Fix histogram compare function on big endian machines
#     
#      - Fix histogram trigger function on big endian machines
#     
#      - Make trace_printk() irq sync on init for kprobe selftest correctness
#     
#     * tag 'trace-v5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
#       tracing: Fix endianness bug in histogram trigger
#       samples/trace_printk: Wait for IRQ work to finish
#       tracing: Fix lock inversion in trace_event_enable_tgid_record()
#       tracing: Have the histogram compare functions convert to u64 first
#       tracing: Avoid memory leak in process_system_preds()
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-ld --version
# < git log --format=%s --max-count=1 b8e382a185ebb1bca66bd541e5a0f858b6b9cbb9
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_arm-allnoconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  allnoconfig
# make -s -j 48 ARCH=arm O=/kisskb/build/linus_arm-allnoconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/linus_arm-allnoconfig_arm
# Build took: 0:00:15.631555