# git gc
# git rev-parse -q --verify 54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c^{commit}
54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c
# git checkout -q -f -B kisskb 54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c
# git clean -qxdf
# < git log -1
# commit 54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Sep 30 10:35:40 2019 -0700
# 
#     Linux 5.4-rc1
# < /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 54ecb8f7028c5eb3d740bb82b0f1d90f2df63c5c
# < make -s -j 48 ARCH=arm O=/kisskb/build/linus_badge4_defconfig_arm CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/arm-unknown-linux-gnueabi/bin/arm-unknown-linux-gnueabi-  badge4_defconfig
# make -s -j 48 ARCH=arm O=/kisskb/build/linus_badge4_defconfig_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]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:338:21: note: 'pdeo' was declared here
/kisskb/src/drivers/usb/core/devio.c: In function 'async_completed':
/kisskb/src/drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized]
WARNING: vmlinux.o(.text.unlikely+0x5f0): Section mismatch in reference from the function free_memmap() to the function .meminit.text:memblock_free()
The function free_memmap() references
the function __meminit memblock_free().
This is often because free_memmap lacks a __meminit 
annotation or the annotation of memblock_free is wrong.

Completed OK
# rm -rf /kisskb/build/linus_badge4_defconfig_arm
# Build took: 0:04:41.310317