# git rev-parse -q --verify 78807804b0854ecb7dc6906e379fc688aca36456^{commit}
78807804b0854ecb7dc6906e379fc688aca36456
already have revision, skipping fetch
# git checkout -q -f -B kisskb 78807804b0854ecb7dc6906e379fc688aca36456
# git clean -qxdf
# < git log -1
# commit 78807804b0854ecb7dc6906e379fc688aca36456
# Author: Sandipan Das <sandipan@linux.ibm.com>
# Date:   Thu Jul 16 16:33:47 2020 +0530
# 
#     selftests/powerpc: Add test for pkey siginfo verification
#     
#     Commit c46241a370a61 ("powerpc/pkeys: Check vma before
#     returning key fault error to the user") fixes a bug which
#     causes the kernel to set the wrong pkey in siginfo when a
#     pkey fault occurs after two competing threads that have
#     allocated different pkeys, one fully permissive and the
#     other restrictive, attempt to protect a common page at the
#     same time. This adds a test to detect the bug.
#     
#     Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/af137a935684955a60f13de2eb4ca358284f3d7c.1594897099.git.sandipan@linux.ibm.com
# < /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 78807804b0854ecb7dc6906e379fc688aca36456
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  skiroot_defconfig
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_skiroot_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/powerpc-next_skiroot_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/powerpc-next_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/arch/powerpc/kernel/fadump.c:48:17: error: 'cpus_in_fadump' defined but not used [-Werror=unused-variable]
 static atomic_t cpus_in_fadump;
                 ^
cc1: all warnings being treated as errors
make[3]: *** [/kisskb/src/scripts/Makefile.build:280: arch/powerpc/kernel/fadump.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:497: arch/powerpc/kernel] Error 2
make[1]: *** [/kisskb/src/Makefile:1756: arch/powerpc] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:185: __sub-make] Error 2
Command 'make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_skiroot_defconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-next_skiroot_defconfig_powerpc-gcc5
# Build took: 0:01:33.557436