# git rev-parse -q --verify 46d8c4b28652d35dc6cfb5adf7f54e102fc04384^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/crypto master
# git rev-parse -q --verify 46d8c4b28652d35dc6cfb5adf7f54e102fc04384^{commit}
46d8c4b28652d35dc6cfb5adf7f54e102fc04384
# git checkout -q -f -B kisskb 46d8c4b28652d35dc6cfb5adf7f54e102fc04384
# git clean -qxdf
# < git log -1
# commit 46d8c4b28652d35dc6cfb5adf7f54e102fc04384
# Author: Herbert Xu <herbert@gondor.apana.org.au>
# Date:   Fri Jul 13 16:12:32 2018 +0800
# 
#     crypto: padlock-aes - Fix Nano workaround data corruption
#     
#     This was detected by the self-test thanks to Ard's chunking patch.
#     
#     I finally got around to testing this out on my ancient Via box.  It
#     turns out that the workaround got the assembly wrong and we end up
#     doing count + initial cycles of the loop instead of just count.
#     
#     This obviously causes corruption, either by overwriting the source
#     that is yet to be processed, or writing over the end of the buffer.
#     
#     On CPUs that don't require the workaround only ECB is affected.
#     On Nano CPUs both ECB and CBC are affected.
#     
#     This patch fixes it by doing the subtraction prior to the assembly.
#     
#     Fixes: a76c1c23d0c3 ("crypto: padlock-aes - work around Nano CPU...")
#     Cc: <stable@vger.kernel.org>
#     Reported-by: Jamie Heilman <jamie@audible.transient.net>
#     Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 46d8c4b28652d35dc6cfb5adf7f54e102fc04384
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/crypto_ppc64e_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ppc64e_defconfig
# make -s -j 10 ARCH=powerpc O=/kisskb/build/crypto_ppc64e_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1268:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2497:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec':
/kisskb/src/net/bridge/br_netlink.c:635:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2041:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:340:21: note: 'pdeo' was declared here
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1827:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1737:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here
INFO: Uncompressed kernel (size 0xd8cf00) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xe00000)
Image Name:   Linux-4.17.0-rc1-g46d8c4b
Created:      Fri Jul 20 18:09:26 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    5787171 Bytes = 5651.53 kB = 5.52 MB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/crypto_ppc64e_defconfig_powerpc
# Build took: 0:02:09.983446