# git rev-parse -q --verify e2b623fbe6a34bce1332584212ae101ebc2508f5^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
error: 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 e2b623fbe6a34bce1332584212ae101ebc2508f5^{commit}
e2b623fbe6a34bce1332584212ae101ebc2508f5
# git checkout -q -f -B kisskb e2b623fbe6a34bce1332584212ae101ebc2508f5
# git clean -qxdf
# < git log -1
# commit e2b623fbe6a34bce1332584212ae101ebc2508f5
# Merge: 70408a9987d1 f822ad2c2c03
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Oct 23 11:14:47 2018 +0100
# 
#     Merge tag 's390-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
#     
#     Pull s390 updates from Martin Schwidefsky:
#     
#      - Improved access control for the zcrypt driver, multiple device nodes
#        can now be created with different access control lists
#     
#      - Extend the pkey API to provide random protected keys, this is useful
#        for encrypted swap device with ephemeral protected keys
#     
#      - Add support for virtually mapped kernel stacks
#     
#      - Rework the early boot code, this moves the memory detection into the
#        boot code that runs prior to decompression.
#     
#      - Add KASAN support
#     
#      - Bug fixes and cleanups
#     
#     * tag 's390-4.20-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (83 commits)
#       s390/pkey: move pckmo subfunction available checks away from module init
#       s390/kasan: support preemptible kernel build
#       s390/pkey: Load pkey kernel module automatically
#       s390/perf: Return error when debug_register fails
#       s390/sthyi: Fix machine name validity indication
#       s390/zcrypt: fix broken zcrypt_send_cprb in-kernel api function
#       s390/vmalloc: fix VMALLOC_START calculation
#       s390/mem_detect: add missing include
#       s390/dumpstack: print psw mask and address again
#       s390/crypto: Enhance paes cipher to accept variable length key material
#       s390/pkey: Introduce new API for transforming key blobs
#       s390/pkey: Introduce new API for random protected key verification
#       s390/pkey: Add sysfs attributes to emit secure key blobs
#       s390/pkey: Add sysfs attributes to emit protected key blobs
#       s390/pkey: Define protected key blob format
#       s390/pkey: Introduce new API for random protected key generation
#       s390/zcrypt: add ap_adapter_mask sysfs attribute
#       s390/zcrypt: provide apfs failure code on type 86 error reply
#       s390/zcrypt: zcrypt device driver cleanup
#       s390/kasan: add support for mem= kernel parameter
#       ...
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version
# < git log --format=%s --max-count=1 e2b623fbe6a34bce1332584212ae101ebc2508f5
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  randconfig
KCONFIG_SEED=0xF4C5DC77
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# yes \n | make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  
arch/arm64/Makefile:27: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
arch/arm64/Makefile:27: ld does not support --fix-cortex-a53-843419; kernel may be susceptible to erratum
/kisskb/src/scripts/unifdef.c: In function 'Mpass':
/kisskb/src/scripts/unifdef.c:453:28: warning: 'strncpy' output truncated before terminating nul copying 4 bytes from a string of the same length [-Wstringop-truncation]
 static void Mpass (void) { strncpy(keyword, "if  ", 4); Pelif(); }
                            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64
# Build took: 0:04:38.764417