# git rev-parse -q --verify 2c7645b0f7d1014f2636393de7906c6bfd25939f^{commit}
2c7645b0f7d1014f2636393de7906c6bfd25939f
already have revision, skipping fetch
# git checkout -q -f -B kisskb 2c7645b0f7d1014f2636393de7906c6bfd25939f
# git clean -qxdf
# < git log -1
# commit 2c7645b0f7d1014f2636393de7906c6bfd25939f
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Mon Nov 12 13:46:06 2018 +1100
# 
#     selftests/powerpc: Fix wild_bctr test to work on ppc64
#     
#     The selftest I recently added to test branching to an out-of-bounds
#     NIP doesn't work on 64-bit big endian. It does fail but not in the
#     right way. That is it SEGVs trying to load from the opd at BAD_NIP,
#     but it never gets as far as branching to BAD_NIP.
#     
#     To fix it we need to create an opd which is reachable but which holds
#     the bad address.
#     
#     Fixes: b7683fc66eba ("selftests/powerpc: Add a test of wild bctr")
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 2c7645b0f7d1014f2636393de7906c6bfd25939f
# < make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_virtex_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  40x/virtex_defconfig
# make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-fixes_40x_virtex_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:133:33: warning: 'levelspread[<U4000>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:100:6: note: 'levelspread[<U4000>]' was declared here
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' 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:341:21: note: 'pdeo' was declared here
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here
INFO: Uncompressed kernel (size 0x5795bc) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-4.20.0-rc1+
Created:      Tue Nov 13 19:52:52 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2781838 Bytes = 2716.64 KiB = 2.65 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_40x_virtex_defconfig_powerpc
# Build took: 0:00:28.743539