# git rev-parse -q --verify b1b11d0063aab28aaf65f63cff56470bc01dc290^{commit}
b1b11d0063aab28aaf65f63cff56470bc01dc290
already have revision, skipping fetch
# git checkout -q -f -B kisskb b1b11d0063aab28aaf65f63cff56470bc01dc290
# git clean -qxdf
# < git log -1
# commit b1b11d0063aab28aaf65f63cff56470bc01dc290
# Merge: 1bfde037425d 775802c0571f
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Fri Jul 10 09:45:15 2020 -0700
# 
#     Merge tag 'cleanup-kernel_read_write' of git://git.infradead.org/users/hch/misc
#     
#     Pull in-kernel read and write op cleanups from Christoph Hellwig:
#      "Cleanup in-kernel read and write operations
#     
#       Reshuffle the (__)kernel_read and (__)kernel_write helpers, and ensure
#       all users of in-kernel file I/O use them if they don't use iov_iter
#       based methods already.
#     
#       The new WARN_ONs in combination with syzcaller already found a missing
#       input validation in 9p. The fix should be on your way through the
#       maintainer ASAP".
#     
#     [ This is prep-work for the real changes coming 5.9 ]
#     
#     * tag 'cleanup-kernel_read_write' of git://git.infradead.org/users/hch/misc:
#       fs: remove __vfs_read
#       fs: implement kernel_read using __kernel_read
#       integrity/ima: switch to using __kernel_read
#       fs: add a __kernel_read helper
#       fs: remove __vfs_write
#       fs: implement kernel_write using __kernel_write
#       fs: check FMODE_WRITE in __kernel_write
#       fs: unexport __kernel_write
#       bpfilter: switch to kernel_write
#       autofs: switch to kernel_write
#       cachefiles: switch to kernel_write
# < /opt/cross/kisskb/arcompact-buildroot-2015.08.1/bin/arc-buildroot-linux-uclibc-gcc --version
# < /opt/cross/kisskb/arcompact-buildroot-2015.08.1/bin/arc-buildroot-linux-uclibc-ld --version
# < git log --format=%s --max-count=1 b1b11d0063aab28aaf65f63cff56470bc01dc290
# < make -s -j 48 ARCH=arc O=/kisskb/build/linus_axs101_defconfig_arcompact CROSS_COMPILE=/opt/cross/kisskb/arcompact-buildroot-2015.08.1/bin/arc-buildroot-linux-uclibc-  axs101_defconfig
# Added to kconfig CONFIG_INITRAMFS_SOURCE=""
# < make -s -j 48 ARCH=arc O=/kisskb/build/linus_axs101_defconfig_arcompact CROSS_COMPILE=/opt/cross/kisskb/arcompact-buildroot-2015.08.1/bin/arc-buildroot-linux-uclibc-  help
# make -s -j 48 ARCH=arc O=/kisskb/build/linus_axs101_defconfig_arcompact CROSS_COMPILE=/opt/cross/kisskb/arcompact-buildroot-2015.08.1/bin/arc-buildroot-linux-uclibc-  olddefconfig
# make -s -j 48 ARCH=arc O=/kisskb/build/linus_axs101_defconfig_arcompact CROSS_COMPILE=/opt/cross/kisskb/arcompact-buildroot-2015.08.1/bin/arc-buildroot-linux-uclibc-  
In file included from /kisskb/src/include/linux/compiler_types.h:68:0,
                 from <command-line>:0:
/kisskb/src/include/linux/compiler-gcc.h:15:3: error: #error Sorry, your compiler is too old - please upgrade it.
 # error Sorry, your compiler is too old - please upgrade it.
   ^
In file included from /kisskb/src/include/linux/compiler_types.h:68:0,
                 from <command-line>:0:
/kisskb/src/include/linux/compiler-gcc.h:15:3: error: #error Sorry, your compiler is too old - please upgrade it.
 # error Sorry, your compiler is too old - please upgrade it.
   ^
make[2]: *** [/kisskb/src/scripts/Makefile.build:281: scripts/mod/empty.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /kisskb/src/include/linux/string.h:6:0,
                 from /kisskb/src/include/linux/uuid.h:12,
                 from /kisskb/src/include/linux/mod_devicetable.h:13,
                 from /kisskb/src/scripts/mod/devicetable-offsets.c:3:
/kisskb/src/include/linux/compiler.h: In function '__read_once_word_nocheck':
/kisskb/src/include/linux/compiler.h:309:2: error: implicit declaration of function '_Generic' [-Werror=implicit-function-declaration]
  return __READ_ONCE(*(unsigned long *)addr);
  ^
In file included from <command-line>:0:0:
/kisskb/src/include/linux/compiler_types.h:265:5: error: expected expression before 'char'
     char: (char)0,    \
     ^
/kisskb/src/include/linux/compiler.h:280:42: note: in expansion of macro '__unqual_scalar_typeof'
 #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
                                          ^
/kisskb/src/include/linux/compiler.h:309:9: note: in expansion of macro '__READ_ONCE'
  return __READ_ONCE(*(unsigned long *)addr);
         ^
cc1: some warnings being treated as errors
make[2]: *** [/kisskb/src/scripts/Makefile.build:114: scripts/mod/devicetable-offsets.s] Error 1
make[1]: *** [/kisskb/src/Makefile:1174: prepare0] Error 2
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 48 ARCH=arc O=/kisskb/build/linus_axs101_defconfig_arcompact CROSS_COMPILE=/opt/cross/kisskb/arcompact-buildroot-2015.08.1/bin/arc-buildroot-linux-uclibc-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_axs101_defconfig_arcompact
# Build took: 0:00:04.762958