# git rev-parse -q --verify 3a562aee727a7bfbb3a37b1aa934118397dad701^{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 3a562aee727a7bfbb3a37b1aa934118397dad701^{commit}
3a562aee727a7bfbb3a37b1aa934118397dad701
# git checkout -q -f -B kisskb 3a562aee727a7bfbb3a37b1aa934118397dad701
# git clean -qxdf
# < git log -1
# commit 3a562aee727a7bfbb3a37b1aa934118397dad701
# Merge: b6b4aafc99d7 de7999afedff
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Jan 3 12:20:21 2020 -0800
# 
#     Merge tag 'for-5.5-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
#     
#     Pull btrfs fixes from David Sterba:
#      "A few fixes for btrfs:
#     
#        - blkcg accounting problem with compression that could stall writes
#     
#        - setting up blkcg bio for compression crashes due to NULL bdev
#          pointer
#     
#        - fix possible infinite loop in writeback for nocow files (here
#          possible means almost impossible, 13 things that need to happen to
#          trigger it)"
#     
#     * tag 'for-5.5-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
#       Btrfs: fix infinite loop during nocow writeback due to race
#       btrfs: fix compressed write bio blkcg attribution
#       btrfs: punt all bios created in btrfs_submit_compressed_write()
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 3a562aee727a7bfbb3a37b1aa934118397dad701
# < make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 CROSS_COMPILE=/opt/cross/kisskb/br-aarch64-glibc-2016.08-613-ge98b4dd/bin/aarch64-linux-  randconfig
KCONFIG_SEED=0xF2F0F8BE
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# yes \n | make -s -j 48 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4 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-gcc5.4 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/drivers/gpu/drm/tegra/sor.c:3970:12: warning: 'tegra_sor_suspend' defined but not used [-Wunused-function]
 static int tegra_sor_suspend(struct device *dev)
            ^
/kisskb/src/drivers/gpu/drm/tegra/sor.c:3984:12: warning: 'tegra_sor_resume' defined but not used [-Wunused-function]
 static int tegra_sor_resume(struct device *dev)
            ^
Completed OK
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc5.4
# Build took: 0:07:21.903710