# git rev-parse -q --verify f49aa1de98363b6c5fba4637678d6b0ba3d18065^{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 f49aa1de98363b6c5fba4637678d6b0ba3d18065^{commit}
f49aa1de98363b6c5fba4637678d6b0ba3d18065
# git checkout -q -f -B kisskb f49aa1de98363b6c5fba4637678d6b0ba3d18065
# git clean -qxdf
# < git log -1
# commit f49aa1de98363b6c5fba4637678d6b0ba3d18065
# Merge: 78e03651849f 4e9845eff5a8
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon May 20 09:52:35 2019 -0700
# 
#     Merge tag 'for-5.2-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
#     
#     Pull btrfs fixes from David Sterba:
#      "Notable highlights:
#     
#        - fixes for some long-standing bugs in fsync that were quite hard to
#          catch but now finaly fixed
#     
#        - some fixups to error handling paths that did not properly clean up
#          (locking, memory)
#     
#        - fix to space reservation for inheriting properties"
#     
#     * tag 'for-5.2-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
#       Btrfs: tree-checker: detect file extent items with overlapping ranges
#       Btrfs: fix race between ranged fsync and writeback of adjacent ranges
#       Btrfs: avoid fallback to transaction commit during fsync of files with holes
#       btrfs: extent-tree: Fix a bug that btrfs is unable to add pinned bytes
#       btrfs: sysfs: don't leak memory when failing add fsid
#       btrfs: sysfs: Fix error path kobject memory leak
#       Btrfs: do not abort transaction at btrfs_update_root() after failure to COW path
#       btrfs: use the existing reserved items for our first prop for inheritance
#       btrfs: don't double unlock on error in btrfs_punch_hole
#       btrfs: Check the compression level before getting a workspace
# < /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 f49aa1de98363b6c5fba4637678d6b0ba3d18065
# < make -s -j 80 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=0x86C8BD0
# 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 80 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 80 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:308: checkbin] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 80 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: 0:00:10.375919