# git rev-parse -q --verify 3a562aee727a7bfbb3a37b1aa934118397dad701^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# 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/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 3a562aee727a7bfbb3a37b1aa934118397dad701
# < 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=0xD6509830
# 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-  
/kisskb/src/tools/objtool
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c: In function 'sh_mobile_i2c_isr':
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:399:26: warning: 'data' may be used uninitialized in this function [-Wmaybe-uninitialized]
   pd->msg->buf[real_pos] = data;
                          ^
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:372:16: note: 'data' was declared here
  unsigned char data;
                ^
Completed OK
# rm -rf /kisskb/build/linus-rand_x86_64-randconfig_um-x86_64
# Build took: 0:04:25.763020