# git rev-parse -q --verify c195d66a8a75c60515819b101975f38b7ec6577f^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/crypto master
# git rev-parse -q --verify c195d66a8a75c60515819b101975f38b7ec6577f^{commit}
c195d66a8a75c60515819b101975f38b7ec6577f
# git checkout -q -f -B kisskb c195d66a8a75c60515819b101975f38b7ec6577f
# git clean -qxdf
# < git log -1
# commit c195d66a8a75c60515819b101975f38b7ec6577f
# Author: Herbert Xu <herbert@gondor.apana.org.au>
# Date:   Thu Aug 27 17:14:36 2020 +1000
# 
#     crypto: af_alg - Work around empty control messages without MSG_MORE
#     
#     The iwd daemon uses libell which sets up the skcipher operation with
#     two separate control messages.  As the first control message is sent
#     without MSG_MORE, it is interpreted as an empty request.
#     
#     While libell should be fixed to use MSG_MORE where appropriate, this
#     patch works around the bug in the kernel so that existing binaries
#     continue to work.
#     
#     We will print a warning however.
#     
#     A separate issue is that the new kernel code no longer allows the
#     control message to be sent twice within the same request.  This
#     restriction is obviously incompatible with what iwd was doing (first
#     setting an IV and then sending the real control message).  This
#     patch changes the kernel so that this is explicitly allowed.
#     
#     Reported-by: Caleb Jorden <caljorden@hotmail.com>
#     Fixes: f3c802a1f300 ("crypto: algif_aead - Only wake up when...")
#     Cc: <stable@vger.kernel.org>
#     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 c195d66a8a75c60515819b101975f38b7ec6577f
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 48 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/crypto_powernv_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
Completed OK
# rm -rf /kisskb/build/crypto_powernv_defconfig_powerpc-gcc5
# Build took: 0:03:58.189703