# git rev-parse -q --verify eff48ddeab782e35e58ccc8853f7386bbae9dec4^{commit}
eff48ddeab782e35e58ccc8853f7386bbae9dec4
already have revision, skipping fetch
# git checkout -q -f -B kisskb eff48ddeab782e35e58ccc8853f7386bbae9dec4
# git clean -qxdf
# < git log -1
# commit eff48ddeab782e35e58ccc8853f7386bbae9dec4
# Merge: 98477740630f a27026e95b57
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Sep 22 09:08:33 2020 -0700
# 
#     Merge tag 'trace-v5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
#     
#     Pull tracing fixes from Steven Rostedt:
#     
#      - Check kprobe is enabled before unregistering from ftrace as it isn't
#        registered when disabled.
#     
#      - Remove kprobes enabled via command-line that is on init text when
#        freed.
#     
#      - Add missing RCU synchronization for ftrace trampoline symbols removed
#        from kallsyms.
#     
#      - Free trampoline on error path if ftrace_startup() fails.
#     
#      - Give more space for the longer PID numbers in trace output.
#     
#      - Fix a possible double free in the histogram code.
#     
#      - A couple of fixes that were discovered by sparse.
#     
#     * tag 'trace-v5.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
#       bootconfig: init: make xbc_namebuf static
#       kprobes: tracing/kprobes: Fix to kill kprobes on initmem after boot
#       tracing: fix double free
#       ftrace: Let ftrace_enable_sysctl take a kernel pointer buffer
#       tracing: Make the space reserved for the pid wider
#       ftrace: Fix missing synchronize_rcu() removing trampoline from kallsyms
#       ftrace: Free the trampoline when ftrace_startup() fails
#       kprobes: Fix to check probe enabled before disarm_kprobe_ftrace()
# < /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 eff48ddeab782e35e58ccc8853f7386bbae9dec4
# < make -s -j 80 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 defconfig
# < make -s -j 80 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 help
# make -s -j 80 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig
# make -s -j 80 ARCH=um O=/kisskb/build/linus_um-defconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux- SUBARCH=x86_64 
/kisskb/src/arch/um/os-Linux/signal.c: In function 'sig_handler_common':
/kisskb/src/arch/um/os-Linux/signal.c:51:1: warning: the frame size of 2960 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
/kisskb/src/arch/um/os-Linux/signal.c: In function 'timer_real_alarm_handler':
/kisskb/src/arch/um/os-Linux/signal.c:95:1: warning: the frame size of 2960 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
  LINK linux
Completed OK
# rm -rf /kisskb/build/linus_um-defconfig_um-x86_64
# Build took: 0:00:48.289494