# git rev-parse -q --verify 4b377b4868ef17b040065bd468668c707d2477a5^{commit}
4b377b4868ef17b040065bd468668c707d2477a5
already have revision, skipping fetch
# git checkout -q -f -B kisskb 4b377b4868ef17b040065bd468668c707d2477a5
# git clean -qxdf
# < git log -1
# commit 4b377b4868ef17b040065bd468668c707d2477a5
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri May 17 19:17:55 2024 -0700
# 
#     kprobe/ftrace: fix build error due to bad function definition
#     
#     Commit 1a7d0890dd4a ("kprobe/ftrace: bail out if ftrace was killed")
#     introduced a bad K&R function definition, which we haven't accepted in a
#     long long time.
#     
#     Gcc seems to let it slide, but clang notices with the appropriate error:
#     
#       kernel/kprobes.c:1140:24: error: a function declaration without a prototype is deprecated in all >
#        1140 | void kprobe_ftrace_kill()
#             |                        ^
#             |                         void
#     
#     but this commit was apparently never in linux-next before it was sent
#     upstream, so it didn't get the appropriate build test coverage.
#     
#     Fixes: 1a7d0890dd4a kprobe/ftrace: bail out if ftrace was killed
#     Cc: Stephen Brennan <stephen.s.brennan@oracle.com>
#     Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
#     Cc: Guo Ren <guoren@kernel.org>
#     Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-ld --version
# < git log --format=%s --max-count=1 4b377b4868ef17b040065bd468668c707d2477a5
# make -s -j 160 ARCH=s390 O=/kisskb/build/linus_defconfig_s390x-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-  defconfig
# Added to kconfig CONFIG_DEBUG_INFO_BTF=n
# Added to kconfig 
# < make -s -j 160 ARCH=s390 O=/kisskb/build/linus_defconfig_s390x-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-  help
# make -s -j 160 ARCH=s390 O=/kisskb/build/linus_defconfig_s390x-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-  olddefconfig
.config:3772:warning: override: reassigning to symbol DEBUG_INFO_BTF
# make -s -j 160 ARCH=s390 O=/kisskb/build/linus_defconfig_s390x-gcc13 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-13.1.0-nolibc/s390-linux/bin/s390-linux-  
Completed OK
# rm -rf /kisskb/build/linus_defconfig_s390x-gcc13
# Build took: 0:05:58.070966