# git rev-parse -q --verify f7c3bf8fa7e5a8e45f4a8e82be6466157854b59b^{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 f7c3bf8fa7e5a8e45f4a8e82be6466157854b59b^{commit}
f7c3bf8fa7e5a8e45f4a8e82be6466157854b59b
# git checkout -q -f -B kisskb f7c3bf8fa7e5a8e45f4a8e82be6466157854b59b
# git clean -qxdf
# < git log -1
# commit f7c3bf8fa7e5a8e45f4a8e82be6466157854b59b
# Merge: fbc246a12aac f0b444b349e3
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sat Sep 21 14:42:59 2019 -0700
# 
#     Merge tag 'gfs2-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2
#     
#     Pull gfs2 updates from Andreas Gruenbacher:
#     
#      - Use asynchronous glocks and timeouts to recover from deadlocks during
#        rename and exchange: the lock ordering constraints the vfs uses are
#        not sufficient to prevent deadlocks across multiple nodes.
#     
#      - Add support for IOMAP_ZERO and use iomap_zero_range to replace gfs2
#        specific code.
#     
#      - Various other minor fixes and cleanups.
#     
#     * tag 'gfs2-for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
#       gfs2: clear buf_in_tr when ending a transaction in sweep_bh_for_rgrps
#       gfs2: Improve mmap write vs. truncate consistency
#       gfs2: Use async glocks for rename
#       gfs2: create function gfs2_glock_update_hold_time
#       gfs2: separate holder for rgrps in gfs2_rename
#       gfs2: Delete an unnecessary check before brelse()
#       gfs2: Minor PAGE_SIZE arithmetic cleanups
#       gfs2: Fix recovery slot bumping
#       gfs2: Fix possible fs name overflows
#       gfs2: untangle the logic in gfs2_drevalidate
#       gfs2: Always mark inode dirty in fallocate
#       gfs2: Minor gfs2_alloc_inode cleanup
#       gfs2: implement gfs2_block_zero_range using iomap_zero_range
#       gfs2: Add support for IOMAP_ZERO
#       gfs2: gfs2_iomap_begin cleanup
# < /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 f7c3bf8fa7e5a8e45f4a8e82be6466157854b59b
# < make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  randconfig
KCONFIG_SEED=0xEFEB6EF8
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# yes \n | make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  
You are building kernel with non-retpoline compiler.
Please update your compiler.
make[1]: *** [arch/x86/Makefile:309: checkbin] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 120 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_um-x86_64 CROSS_COMPILE=/opt/cross/kisskb/fe-x86-64-core-i7-2017.05/bin/x86_64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_x86_64-randconfig_um-x86_64
# Build took: 0:00:07.938171