# git rev-parse -q --verify e7140639b1de65bba435a6bd772d134901141f86^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git next-test
error: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify e7140639b1de65bba435a6bd772d134901141f86^{commit}
e7140639b1de65bba435a6bd772d134901141f86
# git checkout -q -f -B kisskb e7140639b1de65bba435a6bd772d134901141f86
# git clean -qxdf
# < git log -1
# commit e7140639b1de65bba435a6bd772d134901141f86
# Author: Nathan Chancellor <natechancellor@gmail.com>
# Date:   Mon Feb 25 22:38:55 2019 -0700
# 
#     powerpc/xmon: Fix opcode being uninitialized in print_insn_powerpc
#     
#     When building with -Wsometimes-uninitialized, Clang warns:
#     
#       arch/powerpc/xmon/ppc-dis.c:157:7: warning: variable 'opcode' is used
#       uninitialized whenever 'if' condition is false
#       [-Wsometimes-uninitialized]
#         if (cpu_has_feature(CPU_FTRS_POWER9))
#             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#       arch/powerpc/xmon/ppc-dis.c:167:7: note: uninitialized use occurs here
#         if (opcode == NULL)
#             ^~~~~~
#       arch/powerpc/xmon/ppc-dis.c:157:3: note: remove the 'if' if its
#       condition is always true
#         if (cpu_has_feature(CPU_FTRS_POWER9))
#         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#       arch/powerpc/xmon/ppc-dis.c:132:38: note: initialize the variable
#       'opcode' to silence this warning
#         const struct powerpc_opcode *opcode;
#                                            ^
#                                             = NULL
#       1 warning generated.
#     
#     This warning seems to make no sense on the surface because opcode is set
#     to NULL right below this statement. However, there is a comma instead of
#     semicolon to end the dialect assignment, meaning that the opcode
#     assignment only happens in the if statement. Properly terminate that
#     line so that Clang no longer warns.
#     
#     Fixes: 5b102782c7f4 ("powerpc/xmon: Enable disassembly files (compilation changes)")
#     Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
#     Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version
# < git log --format=%s --max-count=1 e7140639b1de65bba435a6bd772d134901141f86
# < make -s -j 48 ARCH=s390 O=/kisskb/build/powerpc-next_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  defconfig
# make -s -j 48 ARCH=s390 O=/kisskb/build/powerpc-next_s390-defconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1263:20: 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:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/trace/trace_dynevent.c: In function 'create_dyn_event':
/kisskb/src/kernel/trace/trace_dynevent.c:89:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1434:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/s390/scsi/zfcp_erp.c: In function 'zfcp_erp_setup_act':
/kisskb/src/drivers/s390/scsi/zfcp_erp.c:262:2: warning: 'erp_action' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1843:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1753:46: warning: 'linear' 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:339:21: note: 'pdeo' was declared here
Completed OK
# rm -rf /kisskb/build/powerpc-next_s390-defconfig_s390x
# Build took: 0:02:15.235149