# git rev-parse -q --verify cb1eeb75cf3dd84ced81333967200583993dfd73^{commit}
cb1eeb75cf3dd84ced81333967200583993dfd73
already have revision, skipping fetch
# git checkout -q -f -B kisskb cb1eeb75cf3dd84ced81333967200583993dfd73
# git clean -qxdf
# < git log -1
# commit cb1eeb75cf3dd84ced81333967200583993dfd73
# Author: Arnd Bergmann <arnd@arndb.de>
# Date:   Tue Jan 7 21:08:58 2020 +0100
# 
#     crypto: hisilicon/sec2 - Use atomics instead of __sync
#     
#     The use of __sync functions for atomic memory access is not
#     supported in the kernel, and can result in a link error depending
#     on configuration:
#     
#     ERROR: "__tsan_atomic32_compare_exchange_strong" [drivers/crypto/hisilicon/sec2/hisi_sec2.ko] undefined!
#     ERROR: "__tsan_atomic64_fetch_add" [drivers/crypto/hisilicon/sec2/hisi_sec2.ko] undefined!
#     
#     Use the kernel's own atomic interfaces instead. This way the
#     debugfs interface actually reads the counter atomically.
#     
#     Fixes: 416d82204df4 ("crypto: hisilicon - add HiSilicon SEC V2 driver")
#     Signed-off-by: Arnd Bergmann <arnd@arndb.de>
#     Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 cb1eeb75cf3dd84ced81333967200583993dfd73
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# make -s -j 8 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_ppc64le-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
In file included from /kisskb/src/include/linux/list.h:9:0,
                 from /kisskb/src/include/linux/wait.h:7,
                 from /kisskb/src/include/linux/wait_bit.h:8,
                 from /kisskb/src/include/linux/fs.h:6,
                 from /kisskb/src/fs/btrfs/send.c:7:
/kisskb/src/fs/btrfs/send.c: In function 'process_extent':
/kisskb/src/include/linux/kernel.h:37:33: warning: 'clone_src_i_size' may be used uninitialized in this function [-Wmaybe-uninitialized]
 #define IS_ALIGNED(x, a)  (((x) & ((typeof(x))(a) - 1)) == 0)
                                 ^
/kisskb/src/fs/btrfs/send.c:5088:6: note: 'clone_src_i_size' was declared here
  u64 clone_src_i_size;
      ^
WARNING: vmlinux.o(.text+0x2fc8): Section mismatch in reference from the variable start_here_common to the function .init.text:start_kernel()
The function start_here_common() references
the function __init start_kernel().
This is often because start_here_common lacks a __init 
annotation or the annotation of start_kernel is wrong.

Completed OK
# rm -rf /kisskb/build/crypto_powernv_defconfig_ppc64le-gcc5
# Build took: 0:06:16.913072