# git rev-parse -q --verify 0bc9bc1d8b2fa0d5a7e2132e89c540099ea63172^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 0bc9bc1d8b2fa0d5a7e2132e89c540099ea63172^{commit}
0bc9bc1d8b2fa0d5a7e2132e89c540099ea63172
# git checkout -q -f -B kisskb 0bc9bc1d8b2fa0d5a7e2132e89c540099ea63172
# git clean -qxdf
# < git log -1
# commit 0bc9bc1d8b2fa0d5a7e2132e89c540099ea63172
# Merge: 7cd3c4126188 e9f53353e166
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Jan 15 14:54:24 2021 -0800
# 
#     Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
#     
#     Pull ext4 fixes from Ted Ts'o:
#      "A number of bug fixes for ext4:
#     
#        - Fix for the new fast_commit feature
#     
#        - Fix some error handling codepaths in whiteout handling and
#          mountpoint sampling
#     
#        - Fix how we write ext4_error information so it goes through the
#          journal when journalling is active, to avoid races that can lead to
#          lost error information, superblock checksum failures, or DIF/DIX
#          features"
#     
#     * tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
#       ext4: remove expensive flush on fast commit
#       ext4: fix bug for rename with RENAME_WHITEOUT
#       ext4: fix wrong list_splice in ext4_fc_cleanup
#       ext4: use IS_ERR instead of IS_ERR_OR_NULL and set inode null when IS_ERR
#       ext4: don't leak old mountpoint samples
#       ext4: drop ext4_handle_dirty_super()
#       ext4: fix superblock checksum failure when setting password salt
#       ext4: use sbi instead of EXT4_SB(sb) in ext4_update_super()
#       ext4: save error info to sb through journal if available
#       ext4: protect superblock modifications with a buffer lock
#       ext4: drop sync argument of ext4_commit_super()
#       ext4: combine ext4_handle_error() and save_error_info()
# < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 0bc9bc1d8b2fa0d5a7e2132e89c540099ea63172
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  randconfig
KCONFIG_SEED=0x8B15EDC1
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_CPU_BIG_ENDIAN=y
# Added to kconfig CONFIG_PPC64=y
# Added to kconfig CONFIG_PPC_DISABLE_WERROR=y
# Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=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_LD_HEAD_STUB_CATCH=y
# Added to kconfig CONFIG_TRIM_UNUSED_KSYMS=n
# Added to kconfig CONFIG_UBSAN=n
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 24 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:6124:warning: override: reassigning to symbol PPC64
.config:6125:warning: override: reassigning to symbol PPC_DISABLE_WERROR
.config:6126:warning: override: reassigning to symbol SECTION_MISMATCH_WARN_ONLY
.config:6127:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
# make -s -j 24 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/eeh.c:1571:12: warning: 'proc_eeh_show' defined but not used [-Wunused-function]
 1571 | static int proc_eeh_show(struct seq_file *m, void *v)
      |            ^~~~~~~~~~~~~
Inconsistent kallsyms data
Try make KALLSYMS_EXTRA_PASS=1 as a workaround
make[1]: *** [/kisskb/src/Makefile:1170: vmlinux] Error 1
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 24 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-9.2.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc9
# Build took: 0:07:30.002950