# git rev-parse -q --verify 612ee81b9461475b5a5612c2e8d71559dd3c7920^{commit}
612ee81b9461475b5a5612c2e8d71559dd3c7920
already have revision, skipping fetch
# git checkout -q -f -B kisskb 612ee81b9461475b5a5612c2e8d71559dd3c7920
# git clean -qxdf
# < git log -1
# commit 612ee81b9461475b5a5612c2e8d71559dd3c7920
# Author: Vaibhav Jain <vaibhav@linux.ibm.com>
# Date:   Fri Sep 27 11:50:02 2019 +0530
# 
#     powerpc/papr_scm: Fix an off-by-one check in papr_scm_meta_{get, set}
#     
#     A validation check to prevent out of bounds read/write inside
#     functions papr_scm_meta_{get,set}() is off-by-one that prevent reads
#     and writes to the last byte of the label area.
#     
#     This bug manifests as a failure to probe a dimm when libnvdimm is
#     unable to read the entire config-area as advertised by
#     ND_CMD_GET_CONFIG_SIZE. This usually happens when there are large
#     number of namespaces created in the region backed by the dimm and the
#     label-index spans max possible config-area. An error of the form below
#     usually reported in the kernel logs:
#     
#     [  255.293912] nvdimm: probe of nmem0 failed with error -22
#     
#     The patch fixes these validation checks there by letting libnvdimm
#     access the entire config-area.
#     
#     Fixes: 53e80bd042773('powerpc/nvdimm: Add support for multibyte read/write for metadata')
#     Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
#     Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20190927062002.3169-1-vaibhav@linux.ibm.com
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 612ee81b9461475b5a5612c2e8d71559dd3c7920
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  powernv_defconfig
# Added to kconfig CONFIG_PPC_RADIX_MMU=n
# yes \n | make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/mm/book3s64/pgtable.c: In function 'flush_partition':
/kisskb/src/arch/powerpc/mm/book3s64/pgtable.c:216:3: error: implicit declaration of function 'radix__flush_all_lpid_guest'; did you mean 'radix__flush_all_lpid'? [-Werror=implicit-function-declaration]
   radix__flush_all_lpid_guest(lpid);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   radix__flush_all_lpid
cc1: all warnings being treated as errors
make[4]: *** [/kisskb/src/scripts/Makefile.build:266: arch/powerpc/mm/book3s64/pgtable.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[3]: *** [/kisskb/src/scripts/Makefile.build:509: arch/powerpc/mm/book3s64] Error 2
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:509: arch/powerpc/mm] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1650: arch/powerpc] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_powernv_defconfig+NO_RADIX_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-next_powernv_defconfig+NO_RADIX_powerpc-gcc8
# Build took: 0:01:43.876954